{"title":"O.S Engines","description":"O.S. is one of the world leading companies devoted solely to the manufacture of model engines and Live Steam Locomotives. The high standards of skilled craftsmanship that have been developed through the 80 years of O.S. engine production history introduced the world's first model rotary engine, and, more recently, Electronic Fuel Injection system engine ranging from the small displacement .10 engine up to the larger Five cylinder radial four-stroke 3.0 engine. For the production of O.S. engines, modern precision machinery and carefully selected top quality materials are employed to ensure consistent performance and long life. O.S. will always seek \"quality and performance\" with worldwide users.","products":[{"product_id":"os-max-35ax-w-e-3080-silencer","title":"OS MAX 35AX w\/E-3080 Silencer","description":"Designed specifically for light weight and high power output from a compact crankcase, the Max 35AX is an ideal engine for 'Fun Fly' and 3D flying.\u003cbr\u003e\u003cbr\u003eThe new crankcase follows the theme of all the new AX range and the 35AX will fit exactly where the old 32SX did without modification.\u003cbr\u003e\u003cbr\u003eThe new E-3080 muffler is highly effective and features a sealing O-ring between the two main sections. As you would expect, the silencer outlet can be rotated to and desired position.\u003cbr\u003eWith only 10g more than the old Max 32SX, the 35AX has very little weight penalty for it's substantial power increase.","brand":"OS","offers":[{"title":"Default Title","offer_id":36025454035105,"sku":"L-OS13100","price":159.99,"currency_code":"GBP","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0432\/8584\/0033\/products\/l-os13100.jpg?v=1608134225"},{"product_id":"os-engine-max-21xm-version-ii-outboard","title":"OS Engine MAX 21XM Version II Outboard","description":"Take down the competition with the 21XM Version II Outboard Marine engine from O.S.! Designed expressly for small and medium sized outboard boats, it retains many of the features found on the successful 21XM, including the 20J carburettor and #8 glow plug. New additions include efficient air cooling, a larger muffler, aluminium tilt transom mounting plate, outboard unit with flexible propeller and blue anodised aluminium heatsink head.\u003cbr\u003e\u003cbr\u003eThe Complete Outboard Unit !!","brand":"OS","offers":[{"title":"Default Title","offer_id":36025456656545,"sku":"L-OS13941","price":798.98,"currency_code":"GBP","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0432\/8584\/0033\/products\/l-os13941.jpg?v=1608134201"},{"product_id":"os-max-46axii-engine-with-e-3071-silencer","title":"OS Engine MAX 46AXII w\/E-3071 Silencer","description":"Designed to succeed the original 46AX, the new 46AX MkII retains the same mounting dimensions, but O.S. have updated the styling to bring it into line with the current range of AX engines. That means the introduction of the highly efficient and unique cooling fins to keep temperatures under control while the precision carburettor, with its angled needle valve keeping fingers safely away from the propeller disc, offers the linear response across the entire rpm range that you would expect from O.S. Optimised to produce its power at low rpms - and thanks to the highly effective 'Powerbox' silencer - the engine produces even less noise too.\u003cbr\u003e\u003cbr\u003eSimple, side-exhaust design.\u003cbr\u003ePower Box muffler features a squared-off shape for easier fits in more cowls.\u003cbr\u003e40K carburetor has high- and low-speed needles, plus a mixture adjustment screw. Tighter tolerances between the piston and ABL create a tighter compression seal and improved power.\u003cbr\u003eDual ball bearing-supported crankshaft lowers friction and wear.\u003cbr\u003eHead automatically centers and levels itself — and snugs down with just 4 screws.\u003cbr\u003eSubtly tapered low-end needle eliminates surging at transition, ensuring smooth,\u003cbr\u003econtrollable power across the rpm range.\u003cbr\u003eUpdated liner ports and a ball-milled inlet port minimize turbulence and promote better fuel\/air mixing.\u003cbr\u003eMinimizes \"creep\" and resets with seals on both needles and a ratchet spring on the high-speed needle. A rotor guide screw eliminates spring-related movement, too.\u003cbr\u003eIncludes a lock nut and a longer crankshaft with more thread length to ensure better\u003cbr\u003eprop nut engagement and greater pilot safety.\u003cbr\u003eIncludes glow plug, muffler, cable extension and warranty.\u003cbr\u003eThe ABL (Advanced Bi-Metallic Liner) includes one layer for better bonding, and another to reduce wear and extend life.\u003cbr\u003eA needle-valve extension cable and rear-angled high-speed needle maximum pilot safety and convenience.\u003cbr\u003eA generously sized chamber and larger sound baffle help the Power Box muffler significantly reduce exhaust noise without compromising power. Rotatable exhaust outlet provides effective, no-cost finish protection.\u003cbr\u003e\u003cbr\u003ePerfect for sports, aerobatic and scale applications.\u003cbr\u003e\u003cbr\u003e","brand":"OS","offers":[{"title":"Default Title","offer_id":36025457508513,"sku":"L-OS15490","price":161.98,"currency_code":"GBP","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0432\/8584\/0033\/products\/l-os15490.jpg?v=1608134176"},{"product_id":"os-max-50sx-h-ring-hyper","title":"OS MAX 50SX-H Ring Hyper","description":"The best '50-class' engine on the market just became amazing with the introduction of the new 50SX-H Hyper. \u003cbr\u003e\u003cbr\u003eThat CNC machined cylinder head has been developed to give better power and improved cooling at the same time. The new carburettor has also been improved to help extract more power than the standard engine without sacrificing the throttle precision you have come to expect from OS helicopter engines. \u003cbr\u003e\u003cbr\u003eThis truly is the 'best' engine in the 50-class and is fast becoming the best seller as well. It's an OS, what else would you expect!!","brand":"OS","offers":[{"title":"Default Title","offer_id":36025458458785,"sku":"L-OS15550","price":266.78,"currency_code":"GBP","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0432\/8584\/0033\/products\/l-os15550.jpg?v=1608134168"},{"product_id":"os-max-55ax","title":"OS ENGINE Max 55 AX 2715","description":"Designed to combine maximum power with razor sharp throttle response in the smallest possible crankcase, the 55AX has the same mounting dimensions as the popular 46AX above, but an increase in power to 1.75PS. The dramatic AX fin styling is used for optimum cooling and the rearward angled needle on the carb makes adjustments safer. The new 40K carb and also helps increase the horsepower over the previous 40J model. Perfect for sport, scale and aerobatic models.","brand":"OS","offers":[{"title":"Default Title","offer_id":36025458983073,"sku":"L-OS15612","price":152.98,"currency_code":"GBP","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0432\/8584\/0033\/products\/l-os15612.jpg?v=1608134142"},{"product_id":"os-max-55hz-hyper","title":"OS MAX 55HZ Hyper","description":"The max 50SX-H Hyper has established an enviable reputation for power, reliability and ease of use. The Max 55HZ Hyper moves that to a whole new level!\u003cbr\u003e\u003cbr\u003eDesigned primarily with the demands of the 3D pilot in mind, the 55HZ Hyper delivers 61 size performance in a 46 size crankcase. That power comes from the extensive experience that OS has gained over many years and working extensively with the worlds top pilots to refine all aspects of the engine without compromise in any area.\u003cbr\u003e\u003cbr\u003eBy using the same mounting layout, you can drop a 55HZ into any model that previously suited the 50SX-H without modification. Just the area around the new carburettor is a little bigger and may require adjustmenst to the cooling shroud.\u003cbr\u003e\u003cbr\u003eThis entirely new engine shares almost nothing with the 50SX-H and has some new features not seen on an engine of this size before. The rear bearing is now designed to resist corrosion, the new 40L carburettor has three adjustments to cater for idle, mid range and full power. Until now, these features were the domain of 61 class engines or bigger. The throttle arm has four leaves so that push pull control is easy from any direction. The heatsink head is bigger for improved cooling as well.\u003cbr\u003e\u003cbr\u003eFor the first time, OS is also offering a matching tuned muffler as an option part and has been optimised to extract the maximum performance from the 55HZ Hyper. Part number X-OS72144000.","brand":"OS","offers":[{"title":"Default Title","offer_id":36025460949153,"sku":"L-OS15630","price":321.98,"currency_code":"GBP","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0432\/8584\/0033\/products\/l-os15630.jpg?v=1608134112"},{"product_id":"os-engine-max-55hz-r","title":"OS Engine MAX 55HZ-R","description":"The latest engine in the 600\/50 helicopter class borrows much of its technology from the fabulous Max 91HZ-R, to provide class leading power under the most demanding of 3D manouevres. \u003cbr\u003e\u003cbr\u003eThe latest DRS system (Demand Regulator System) uses a crankcase pressure tap-off to pressurise the fuel tank via a one way valve. The pressurised fuel is then carfully regulated at the carburettor to provide the optimum mixture no matter what demands are placed on it. This is done by using the negative pressure in the carburettor venturi as part of the regulation system.\u003cbr\u003e\u003cbr\u003eThe carburettor itself has three mixture controls for low\/mid and high speed settings. Once set for the fuel demands of your model\/type of fuel and muffler, there is rarely any need to change those settings again.\u003cbr\u003e\u003cbr\u003eThe main mechanics of the engine itself are the same as the regulat Max 55HZ.","brand":"OS","offers":[{"title":"Default Title","offer_id":36025462456481,"sku":"L-OS15650","price":298.95,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0432\/8584\/0033\/products\/l-os15650.jpg?v=1608134079"},{"product_id":"o-s-max-65ax-w-e-4010a-silencer","title":"O.S. Max 65AX w\/E-4010A Silencer","description":"Designed as a replacement for the long established Max 61FX, the new Max 65AX has all the features of the new AX series, such the same mounting bolt pattern and silencer bolt dimensions, making a direct replacement for most 61 class engines. The real bonus is more power and torque for the same basic external dimensions.\u003cbr\u003e\u003cbr\u003eLike all the AX series, cooling has been improved by the use of deep finning on the crankcase and cylinder head combined with the new fin pack shape.\u003cbr\u003e\u003cbr\u003eThe silencer is effective and a great benefit to flying fields with sensitive noise iossues. Effective silencing is very much part of the AX design philosophy.\u003cbr\u003e\u003cbr\u003eCarburation is the usuall OS 'exemplary' standard and very much why OS engines are regarded as the best! That comes from careful design and testing allied to stringent manufacturing standards.","brand":"OS","offers":[{"title":"Default Title","offer_id":36025462784161,"sku":"L-OS16521","price":209.99,"currency_code":"GBP","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0432\/8584\/0033\/products\/l-os16521_a79ca25d-07ae-48a0-ac83-2bde4ecc2ac4.jpg?v=1608134052"},{"product_id":"os-max-75ax-w-e-4020-silencer","title":"OS Engine MAX 75AX with E-4040 Silencer L-OS17400","description":"\u003cp\u003eThe third engine in the new 'AX' range of high performance 2 stroke engines fills a convenient gap between the existing 61FX and 91FX, yet features the radical new style pioneered with the fabulous 55AX. The new 75AX is supplied complete with the latest 'P-Box' design silencer for improved noise suppression. By keeping the lower crankcase dimensions the same as the 61FX, you can be sure that it will fit in all models designed for a .61, making a power upgrade very simple. The 75AX features the latest O.S. ringless piston technology with multi-layer cylinder coating and high precision Type 61A carburettor with angled safety needle valve assembly.\u003cbr\u003e\u003cbr\u003e\u003cbr\u003eFits the same mount and bolt pattern as the 61FX.\u003cbr\u003eThe angular head design looks great and significantly increases surface area for better cooling.\u003cbr\u003eIncludes the new Power Box™ muffler, designed with more volume for increased power while still being very compact.\u003cbr\u003eA diagonally-placed needle means no remote needle valve is needed.\u003cbr\u003e\u003c\/p\u003e","brand":"OS","offers":[{"title":"Default Title","offer_id":36025463668897,"sku":"L-OS17400","price":214.99,"currency_code":"GBP","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0432\/8584\/0033\/products\/l-os17400.jpg?v=1608134040"},{"product_id":"os-max-105hz-r","title":"OS Max 105HZ-R","description":"The biggest, pure helicopter engine that OS have ever made delivers the levels of torque and power demanded by top fliers for both '3D' and sport applications.\u003cbr\u003e\u003cbr\u003eThe 15% increase in capacity offers a big increase over the .91 class engines yet still fits in mounts designed for that class. Modification to the cooling shroud is also unlikely.\u003cbr\u003e\u003cbr\u003eThe distinctive 'blue anodised' cylinder head distinguishes the 105HZ engines from the 91HZ series yet retains the HZ series styling overall. \u003cbr\u003e\u003cbr\u003eGeneral internal design is very similar to the 91HZ series and draws on OS's deep experience in creating the best helicopter engines for all classes.\u003cbr\u003e\u003cbr\u003eLike the 91HZ-R 3D, the new 105HZ-R utilises the OS 'DRS' fuel delivery system to cope with the extreme manouevres of modern 3D flight.\u003cbr\u003e\u003cbr\u003eAdvanatges over 120 size heli engines of other makes:\u003cbr\u003e\u003cbr\u003e1) Uses same main gear ratio as .91 class engines\u003cbr\u003e2) Vibration levels the same as the 91HZ so does not tend to break heli parts.\u003cbr\u003e3) Easy carburettor adjustment that stays in tune.\u003cbr\u003e4) Crankcase is noticeably cooler\u003cbr\u003e5) More torque in the mid range for 3D\u003cbr\u003e6) Velocity stack on carburettor sucks cool, undisturbed air from the fan flow.\u003cbr\u003e7) Longer run time per tank\u003cbr\u003e8) 105HZ with 15% nitro is similar power to a 91HZ with 30% nitro.","brand":"OS","offers":[{"title":"Default Title","offer_id":36025463832737,"sku":"L-OS18750","price":449.98,"currency_code":"GBP","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0432\/8584\/0033\/products\/l-os18750.jpg?v=1608134019"},{"product_id":"os-max-95ax","title":"OS Max 95AX with silencer  (2749)","description":"Designed to replace the 91FX yet retain the same mounting dimensions but with increased power and torque.\u003cbr\u003e\u003cbr\u003eThe design has been optimsed to produce strong torque and power at modest RPMs and exploit the extremely effective nature of the E-4040 silencer. This concept becomes important as noise becomes less and less acceptable.\u003cbr\u003e\u003cbr\u003eLike all the latest AX series engines, the highly effective and unique cooling fins keep temperatures under  control and the carburettor, the precision  you would expect from OS.\u003cbr\u003eThe 95AX is another popular-sized engine in the AX series that's famous for providing uncompromising power in tight-fitting applications.\u003cbr\u003e\u003cbr\u003e    A high-performance engine that's ideal for aerobats and large-scale models.\u003cbr\u003e    Generous thread on the extra-long, balanced crankshaft means more secure prop attachment.\u003cbr\u003e    Balanced cracnkshaft provides smoother running which is important on the larger single-cylinder engines as vibrations can literally shake apart the airframe.\u003cbr\u003e    The E-4040 Power Box™ muffler that's included dampens noise while boosting power.\u003cbr\u003e","brand":"OS","offers":[{"title":"Default Title","offer_id":36025465307297,"sku":"L-OS19120","price":269.98,"currency_code":"GBP","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0432\/8584\/0033\/products\/l-os19120.jpg?v=1608133995"},{"product_id":"os-max-120ax-w-5020-silencer","title":"OS MAX 120AX w\/5020 Silencer","description":"The distinctive shape is hard to ignore, and with peak power of 3.1PS at 9000RPM, you can be sure that this engine loves big propellers! OS recognised that engines of this size are often used in scale models and have developed a silencer system that allows adaption to some of the 'tightest' installations. The carburettor features a neat needle valve that protects fingers while adjusting, yet is simple \u0026amp; accessible.\u003cbr\u003e\u003cbr\u003eREQUIREMENTS\u003cbr\u003e\u003cbr\u003eFuel: Two-Stroke with 18 lubricant and 5-20 nitromethane\u003cbr\u003ePropeller: 15x10-12 or 16x8-10\u003cbr\u003eField Equipment: Glow starter, fuel filter, fuel pump, fuel tubing","brand":"OS","offers":[{"title":"Default Title","offer_id":36025465962657,"sku":"L-OS19210","price":287.98,"currency_code":"GBP","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0432\/8584\/0033\/products\/l-os19210.jpg?v=1608133982"},{"product_id":"os-fs-62v-w-f-4050-silencer","title":"OS FS-62V w\/F-4050 Silencer - 1 ONLY Special offer","description":"The second engine in the new 'V' series of O.S. four strokes is targeted at both sports and scale modellers alike.\u003cbr\u003e\u003cbr\u003eLike the FS-95V, the FS-62V has the same 'classic' overall design that appeals to scale modellers that like their engines to remain in character with the model. The performance, on the other hand, is very much 21st Century and builds on the O.S. tradition of constant technological advancement with each new range. In the case of the 'V' series, there is also a strong emphasis on value for money.\u003cbr\u003e\u003cbr\u003eThe carburettor remains as the twin-needle type for both power and throttle response and the 'Jet Stream' generation silencer allows both flexibility of orientation as well as effective sound reduction.\u003cbr\u003e\u003cbr\u003eBy sharing the same mounting bolt pattern as the FS-52 Surpass and FSa-56, mounting the FS-62V as a direct replacement is easy and convenient.\u003cbr\u003e\u003cbr\u003eThe angled pushrod and valve layout allows a better shape of combustion chamber, providing better power and efficiency. The cylinder head is also made from a special alloy that is different to the crankcase to balance durability against reduced weight. Only O.S. goes into this kind of original design detail, separating O.S. quality and performance from those that just copy!\u003cbr\u003e\u003cbr\u003eIf you want the best and the original, choose O.S. every time!","brand":"OS","offers":[{"title":"Default Title","offer_id":36025466454177,"sku":"L-OS30600","price":314.98,"currency_code":"GBP","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0432\/8584\/0033\/products\/l-os30600.jpg?v=1608133976"},{"product_id":"os-ft-160-gemini","title":"OS FT 160 GEMINI - Please Note this engine is to special order only","description":"This is a larger bore version of the original FT120 Gemini - completely redesigned to take advantage of five years' experience with the manufacture of the original model.\u003cbr\u003e\u003cbr\u003eThe Gemini 160 has a displacement of 26,5cc (1.62cu. in.) and offers greatly improved performance. \u003cbr\u003e\u003cbr\u003eIts features include five ball bearings, ringed pistons and a special propeller locknut assembly as standard.\u003cbr\u003e\u003cbr\u003eIdeal for large scale and sport models and designed to be used with 15\" x 8\" to 20\" x 6\" propellers.\u003cbr\u003e\u003cbr\u003eSPECIAL ORDER ONLY - DELIVERY APPROX. 10 WEEKS","brand":"OS","offers":[{"title":"Default Title","offer_id":36025468453025,"sku":"L-OS36108","price":1619.98,"currency_code":"GBP","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0432\/8584\/0033\/products\/l-os36108.jpg?v=1608133963"},{"product_id":"os-ff-320-pegasus","title":"OS FF 320 Pegasus","description":"Closely following the design of many full-size light aircraft engines, the O.S. Pegasus 320 is a horizontally opposed four cylinder engine. The Pegasus is unique: it is the only flat four model aircraft engine on the market. It is powerful, yet very easy to handle and incredibly free from vibration. It features pushrod OHV, seven ball bearings, ringed pistons and a special propeller locknut assembly as standard. The FF-320 Pegasus is a unique engine that will exceed all your performance and quality expectations.\u003cbr\u003e\u003cbr\u003eSupplied complete with a cast firewall mount, the FF-320 Pegasus is designed to be used with 18\" x 10~14\" to 22\" x 8\" props.","brand":"OS","offers":[{"title":"Default Title","offer_id":36025468944545,"sku":"L-OS36410","price":2699.98,"currency_code":"GBP","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0432\/8584\/0033\/products\/l-os36410.jpg?v=1608133952"},{"product_id":"o-s-gt22-petrol-w-e-5040-silencer","title":"O.S GT22 Petrol W\/E 5040 Silencer","description":"Bringing the OS petrol engine technology into the smaller class of model, the OS GT-22 has all the sophistication that you would expect from OS in terms of quality of manufacturer and innovative design yet manages to combine it all in a compact, powerful package.\u003cbr\u003e\u003cbr\u003eLike the GT-33, the GT-22 has a steel liner for durabilty, a lightweight, ringed piston and a one piece crankcase. OS are the masters of optimising internal designs in a way that allows superb performance combined with easy starting, long life. The design is from the ground up rather than adapting old technology for a different use. Deep fins are needed to carry away the extra heat generated by petrol engines and OS use their casting expertise to make them efficiently thin to be able to do that.\u003cbr\u003e\u003cbr\u003eInside, OS have craftily used a special design of aluminium conrod with pre-installed roller bearings. Using aluminium instead of steel like many of the strimmer based engines means reduced reciprocating mass. This in turn means reduced crankshaft counter-balance. Not only does it reduce weight overall, it also allows quicker throttle response, higher RPM and reduced vibration. As additional retention security, there is a screw retainer in the end of theYears of experience in actual engine design means that OS find innovative solutions to many problems.\u003cbr\u003e\u003cbr\u003eCarburation come courtesy of a real 'Walbro' carburettor adapted by OS for the GT-22. Being a 'pumped' style of carburettor, tank height\/location is a little less critical than a non-pumped carburettor. Once set for the fuel being used, it requires almost no adjustment.\u003cbr\u003e\u003cbr\u003eIgnition is provided by a sophisticated unit that is also common to the GT-33. The main HT lead is shielded to prevent spurious emissions and the spark is delivered by a high quality CM-6 spark plug. Not quite a fit and forget system but pretty close!!\u003cbr\u003e\u003cbr\u003eOS engines are never the cheapest, but like all things in life, you get what you pay for and every OS is guaranteed to have the very best quality, time after time.\u003cbr\u003eSpecification\u003cbr\u003eWeight: 761g (26.86oz) W\/O Silencer\/Ign\u003cbr\u003eWeight: 999.2g (35.24oz) Complete\u003cbr\u003ePropeller Range: 15 x 10, 16 x 8\/10, 17 x 6\/8\u003cbr\u003eDisplacement: 22.12cc (1.35cu.in)\u003cbr\u003eBore: 32.0mm (1,26\")\u003cbr\u003eStroke: 27.5mm (1.083\")\u003cbr\u003ePower Output: 2.7PS (2.66hp) @ 9000rpm\u003cbr\u003ePractical RPM: 1800 - 9000 RPM","brand":"OS","offers":[{"title":"Default Title","offer_id":36025471205537,"sku":"L-OS38200","price":386.98,"currency_code":"GBP","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0432\/8584\/0033\/products\/l-os38200.jpg?v=1608133890"},{"product_id":"o-s-gt33-petrol-w-e-5030-sil","title":"O.S. GT33 Petrol w\/E-5030 Sil.","description":"The second engine in the latest O.S. GT series of petrol engines is designed for the new class of models that are emerging onto the market that are specifically targeted at this size and type of engine. Many of these models are sleek in design, so O.S. has chosen a rear mounted Walbro carburettor with reed valve induction.\u003cbr\u003e\u003cbr\u003eThe advantage of spark ignition petrol engines over regular glow engines is the optimised ignition timing across the rev range that will not change as load goes on and off.\u003cbr\u003e\u003cbr\u003eLike its bigger brother, the GT-55, the GT-33 is a purpose designed model engine and is not based on an industrial unit and just modified. The GT-33 has been optimised in both internal and external shape to provide class leading power and torque in a compact, light package.\u003cbr\u003e\u003cbr\u003eSupplied with an E-5030 'Pitts' style silencer as standard, you can be confident that the final installation will be both convenient and unobtrusive yet deliver effective silencing with minimal power loss.","brand":"OS","offers":[{"title":"Default Title","offer_id":36025471762593,"sku":"L-OS38300","price":382.48,"currency_code":"GBP","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0432\/8584\/0033\/products\/l-os38300_b923bc2f-9ad5-417c-8836-d68d58501d54.jpg?v=1608133877"},{"product_id":"os-gf40-petrol-w-f-6040-silencer","title":"OS GF40 Petrol W\/F-6040 Silencer","description":"The GF40 is the first ever OS four-stroke petrol engine and is designed to offer the benefits of four-stroke operation to a new size of model. That softer, scale sound can now be used in models designed for 33cc 2-stoke engines. In fact, the GF40 has the same mounting bolt configuration as the GT33 as well as the same distance from the rear of the mount to the propeller driver.\u003cbr\u003e\u003cbr\u003eUnlike full size 4-stroke engines (car and aircraft) the GF40 does not use an oil system, it relies on oil mixed in the fuel like a two stroke. To do this requires very careful design and some special features to ensure that lubrication meets the riight surfaces at all times. Two strokes get a constant stream of fuel-oil mix around the big end and bottom end of the engine. A four stroke has to rely on on 'blow by' or other methods to achieve this. OS has thought of this and incorporated internal features to make sure oil reaches the right places. This is partly achieved through their PCV system (Positive Crankcase Ventilation) plus other oil galleries.The PCV system also reduces oil ejection from the exhaust and limits pollutents.\u003cbr\u003e\u003cbr\u003eCarburation is controlled by a special carburettor developed between OS and Walbro especially for the GF40. Being a 'pumped' style of carburettor, there is no need to keep the carburettor close to the centre line of the fuel tank.\u003cbr\u003e\u003cbr\u003eLike all four-strokes, the GF40 is all about torque and the ability to accelerate larger propellers more effectively. Sizes from 18 x 6 up to 20 x 8 bear testament to this.\u003cbr\u003e\u003cbr\u003eWith amazingly low fuel consumption and an effective silencer, was there ever a better time to go four-stroke in bigger models?","brand":"OS","offers":[{"title":"Default Title","offer_id":36025472188577,"sku":"L-OS39400","price":909.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0432\/8584\/0033\/products\/l-os39400.jpg?v=1608133854"},{"product_id":"o-s-ggt15-petrol-engine-with-e-4040-silencer","title":"O.S. GGT15 Petrol Engine with E-4040 Silencer - ONE ONLY AT THIS PRICE","description":"The O.S. GGT-15 uses the latest in model engine technology, it is a petrol engine that uses a glowplug!\u003cbr\u003e\u003cbr\u003eThis is a revotionary technology that is set to change model engines forever! It is not merely putting petrol in a methanol type of engine, It is a fundamental re-design from the ground up. The GGT series has taken years to develop and it has been through extensive testing before going into production.\u003cbr\u003e\u003cbr\u003eFirstly, the layout and timing of the ports and transfers are completely different to a methanol engine. The shape of the combustion chamber is also very different, as is the compression ratio. This is to suit the fundamental differences between the fuels and the fuel air ratios that are burnt. Methanol has a wide tolerance to these ratios but petrol does not. Everything is far more critical and well suited to the OS high-precision and accuracy production techniques.A special G5 glowplug has also been developed to match all of the above, it is not just a re-badging exercise! There is way more to glowplug design than you would think. Gone is the unsighly spark plug and cap plus the expensive ignition unit with another battery that you have to charge.The timing of the crankshaft inlet port and its size are also different, which is to help maintain a high gas flow and throttle response.\u003cbr\u003e\u003cbr\u003eThe ratio of fuel to oil is more critical than a methanol engine. Petrol needs less oil to burn correctly, so the design of the lubrication process also has to change. The GGT series uses a roller big end bearing and plain little end. This needs a little more oil than a twin roller bearing setup, so it is recommended to stay at around 33:1 even after running in. The oil ratio and temperatures dictate the need for a ringed piston setup, which the GGT series has. The clearances inside the engine and the oil feeds are designed to suit the oil available. It puts enough in the right places and copes with the higher temperatures of burning petrol\u003cbr\u003e\u003cbr\u003eLastly, the carburation process has to be very precise with such low fuel air ratios. To do this, OS has adopted a pumped fueling sytem and a specially designed carburettor. This provides optimum fueling at all RPMs and attitudes.\u003cbr\u003e\u003cbr\u003ePetrol is more volative than glow fuel which is why the regular tank presurising via the exhast is not appropriate. It also means that a starter is preferred to flicking, as the chance of premature firing is higher.\u003cbr\u003e\u003cbr\u003eLastly, have a think about the cost of a gallon of 10% methanol\/nitro fuel and compare it to a gallon of regular petrol plus oil. You are looking at a reduction of up to 60%. Add the fact that the GGT-15 sips its fuel at less than 50% compared a methanol engine and the savings fast outweight the increased cost, let alone the flight time per tank!\u003cbr\u003e\u003cbr\u003eTry the New GGT-15, its a revolution not an evolution.","brand":"OS","offers":[{"title":"Default Title","offer_id":36025473400993,"sku":"L-OS3A200","price":377.98,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0432\/8584\/0033\/products\/l-os3a200.jpg?v=1608133838"},{"product_id":"os-engine-oma-3805-1200-brushless-motor","title":"OS Engine OMA-3805-1200 Brushless Motor","description":"This small motor is intended to power models designed for 05 (0.8cc) size engines. As the mounting bolt pattern is identical to many other brands, it allows easy replacement with superior OS power and quality with minimum fuss.\n\nBy choosing the right size of propeller to suit your model, this motor can use 9x6 to 11x7 size propellers from a 3S Li-Po battery pack.\n\n\u003cb\u003eNote:\u003c\/b\u003e To find out if this motor will suit your model please download the instructions as there are power charts showing the performance and setup you can achieve.","brand":"OS","offers":[{"title":"Default Title","offer_id":36026035372193,"sku":"M-OS51010905","price":44.48,"currency_code":"GBP","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0432\/8584\/0033\/products\/m-os51010905.jpg?v=1608130556"},{"product_id":"o-s-omh-4535-1260-brushless-motor","title":"O.S. OMH-4535-1260 Brushless Motor","description":"This OMH-4535-1260 motor is designed to be used in 550-600 size helis using 6S Li-Po batteries. Every piece of this motor had been designed to help reduce friction\/noise and increase the power and efficiency.\n\nWith a 45mm dia. this motor can easially be installed in almost all the existing 550-600 class helicopters without modifications. The shaft is also 35mm long enabling you to support the end with a bearing in many modern helicopter designs.\n\nThe OMH-4535-1260 is designed for sport and 3D flying on 6 cell Li-Po batteries and develops a maximum power output of 1998W (3300W for 5 seconds) at around 28,000 rpm.\n\n• High Performance\n• High Efficiency\n• Great Heat Dissipation","brand":"OS","offers":[{"title":"Default Title","offer_id":36026036322465,"sku":"M-OS51020110","price":94.33,"currency_code":"GBP","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0432\/8584\/0033\/products\/m-os51020110.jpg?v=1608130506"},{"product_id":"o-s-omh-4535-560-brushless-motor","title":"O.S. OMH-4535-560 Brushless Motor","description":"This OMH-4535-560 motor is designed to be used in 600-650 size helis using 12S Li-Po batteries. Every piece of this motor had been designed to help reduce friction\/noise and increase the power and efficiency.\n\nWith a 45mm dia. this motor can easially be installed in almost all the existing 550-600 class helicopters without modifications. The shaft is also 35mm long enabling you to support the end with a bearing in many modern helicopter designs.\n\n• High Performance\n• High Efficiency\n• Great Heat Dissipation","brand":"OS","offers":[{"title":"Default Title","offer_id":36026040877217,"sku":"M-OS51020120","price":97.88,"currency_code":"GBP","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0432\/8584\/0033\/products\/m-os51020120.jpg?v=1608130469"},{"product_id":"o-s-omh-5830-490-brushless-helicopter-motor","title":"O.S. OMH-5830-490 Brushless Helicopter Motor","description":"The O.S. OMH-5830-490 brushless motor has been designed for 700-800 class helicopters, with special attention to F3C competition flying.\u003cbr\u003e\u003cbr\u003eO.S. are known worldwide for their quality and this motor is no exception thanks to the highly efficient cooling for optimal F3C performance. Precision engineering gives high strength and high quality Japanese made ball bearings ensure smooth running.\u003cbr\u003e\u003cbr\u003eThis is a competition level motor through and through, by a name that gives you confidence. \u003cbr\u003e\u003cbr\u003e","brand":"OS","offers":[{"title":"Default Title","offer_id":36026044252321,"sku":"M-OS51020180","price":234.99,"currency_code":"GBP","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0432\/8584\/0033\/products\/m-os51020180.jpg?v=1608130431"},{"product_id":"o-s-oca-150-brushless-electronic-speed-controller-50a","title":"O.S. OCA-150 Brushless ESC (50A)","description":"\u003cb\u003eSuitable O.S.Brushless motors:\u003c\/b\u003e\nOMA-3820-1200 \/ OMA-3825-750 \/ OMA-3815-1000 \/ OMA-3810-1050","brand":"OS","offers":[{"title":"Default Title","offer_id":36026192396449,"sku":"P-OS52010050","price":44.99,"currency_code":"GBP","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0432\/8584\/0033\/products\/p-os52010050.jpg?v=1608129615"},{"product_id":"o-s-oca-170hv-brushless-electronic-speed-controller-70a","title":"O.S. OCA-170HV Brushless ESC(70A)","description":"O.S. Brushless ESCs have the latest high quality FETs, for the coolest possible operation! With auto battery cell recognition, start protection, low-voltage and no-signal cutoff, its easy to set up too. Ni-Cd, Ni-MH and Li-Po compatible and the perfect complement to an O.S. brushless motor!    OCA-170 Specification\u003cbr\u003eCell Count:    14-36 NiCd\/NiMH, 4-12 LiPo\u003cbr\u003eFunction:    Forward-Stop-Brake-Reverse\u003cbr\u003eLoad Current:    70A (85A 5 seconds Peak)\u003cbr\u003eParameter Settings:    ESC\/ESC Programmer OCP-1 (Optional extra)\u003cbr\u003eProtective Functions:    Start protection\/Low voltage cut-off\/No signal cut\u003cbr\u003ePWM Frequency:    32kHz\u003cbr\u003eWeight:    89g","brand":"OS","offers":[{"title":"Default Title","offer_id":36026193215649,"sku":"P-OS52012070","price":59.48,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0432\/8584\/0033\/products\/p-os52012070.jpg?v=1608129601"},{"product_id":"o-s-max-12tg-p-w-12d-carb","title":"O.S. MAX 12TG-P w\/12D Carb.","description":"The 'P' style crankshaft used on this version is intended for use with 2-speed transmissions\/clutch setups. Still the same easy-to-use characteristics and a useful 0.7PS of OS power. An external starting system compatible with your car will be required. Features a stunning machined cylinder head, which not only gives maximum cooling, it looks sensational too.","brand":"OS","offers":[{"title":"Default Title","offer_id":36038064603297,"sku":"L-OS11380","price":132.97,"currency_code":"GBP","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0432\/8584\/0033\/products\/l-os11380_a04d39c9-6f14-4141-ae92-f29af0815a23.jpg?v=1607966929"},{"product_id":"o-s-max-12tg-w-12e-carb","title":"O.S. MAX 12TG w\/12E Carb.","description":"An ideal entry-level engine for the discerning user who just knows quality. Similar in concept to the 21VG series but designed for the smaller 1\/10th classes. This version has the short 5mm crankshaft plus flywheel driver that is suited to single speed transmissions. Check your car specification for compatibility.","brand":"OS","offers":[{"title":"Default Title","offer_id":36038066798753,"sku":"L-OS11382","price":125.53,"currency_code":"GBP","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0432\/8584\/0033\/products\/l-os11382.jpg?v=1607966924"},{"product_id":"o-s-max-12tg-x-w-12e-carb","title":"O.S. MAX 12TG-X w\/12E Carb.","description":"Take the popular MAX 12TG and add the additional functionality of an easy to use OS pull-start system and you've got the MAX 12TG-X. No need for complicated starter boxes, just a glow start and a bottle of 10% nitro fuel and you're ready to go! With only a modest increase in weight, it's the perfect upgrade for compatible vehicles.","brand":"OS","offers":[{"title":"Default Title","offer_id":36038067388577,"sku":"L-OS11383","price":142.49,"currency_code":"GBP","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0432\/8584\/0033\/products\/l-os11383.jpg?v=1607966918"},{"product_id":"o-s-max-105hz","title":"O.S. MAX 105HZ - Heli Engine","description":"The biggest, pure helicopter engine that OS have ever made delivers the levels of torque and power demanded by top fliers for both F3C and sport applications.\u003cbr\u003e\u003cbr\u003eThe 15% increase in capacity offers a big increase over the .91 class engines yet still fits in mounts designed for that class. Modification to the cooling shroud is also unlikely.\u003cbr\u003e\u003cbr\u003eThe distinctive 'blue anodised' cylinder head distinguishes the 105HZ engines from the 91HZ series yet retains the HZ series styling overall. \u003cbr\u003e\u003cbr\u003eGeneral internal design is very similar to the 91HZ series and draws on OS's deep experience in creating the best helicopter engines for all classes.\u003cbr\u003e\u003cbr\u003eAdvanatges over 120 size heli engines of other makes:\u003cbr\u003e\u003cbr\u003e1) Uses same main gear ratio as .91 class engines\u003cbr\u003e2) Vibration levels the same as the 91HZ so does not tend to break heli parts.\u003cbr\u003e3) Easy carburettor adjustment that stays in tune.\u003cbr\u003e4) Crankcase is noticeably cooler\u003cbr\u003e5) More torque in the mid range\u003cbr\u003e6) Velocity stack on carburettor sucks cool, undisturbed air from the fan flow.\u003cbr\u003e7) Longer run time per tank\u003cbr\u003e8) 105HZ with 15% nitro is similar power to a 91HZ with 30% nitro.","brand":"OS","offers":[{"title":"Default Title","offer_id":36038067617953,"sku":"L-OS18700","price":359.98,"currency_code":"GBP","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0432\/8584\/0033\/products\/l-os18700.jpg?v=1607966890"},{"product_id":"o-s-max-105hz-r-w-powerboost-pipe","title":"O.S. MAX 105HZ-R W Heli Engine with Powerboost Pipe","description":"Identical to the regular 105HZ-R technically but supplied with the latest Powerboost 105 pipe. The pipe has been purpose designed to suit the 105HZ-R and will provide high power and torque across the RPM range without heat build up caused by restriction of gas flow.","brand":"OS","offers":[{"title":"Default Title","offer_id":36038067978401,"sku":"L-OS18751","price":539.98,"currency_code":"GBP","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0432\/8584\/0033\/products\/l-os18751.jpg?v=1607966853"},{"product_id":"o-s-fsa-155-p","title":"O.S. FSa-155-P","description":"The biggest engine in the 'Alpha' series has been designed with both aerobatic and scale modellers in mind. \u003cbr\u003e\u003cbr\u003eThe pumped fuel system deals with the demands of aerobatic fliers who demand consistent power in any attitude and is tolerant to variations in fuel tank location. With consistant fueling, the FSa-155-P then goes about its business of delivering that stunning 2.6PS of power when you demand it. But that is only part of the story. The strong spread of torque down the RPM range allows a wide variation of propeller loads to suit both aerobatic and scale modellers alike by 'picking up' cleanly and strongly as the throttle is opened and being tolerant to those different propeller loads.\u003cbr\u003e\u003cbr\u003eWith mounting dimensions identical to 1.20 class engines, fitting the FSa-155-P as a power upgrade is pretty simple.\u003cbr\u003e\u003cbr\u003eFinally, there is flexibility in the silencer mounting method through use of the optional exhaust headers combined with the standard silencer itself.\u003cbr\u003e\u003cbr\u003eWith the legendary OS quality and longevity, it is easy to see why top pilots choose OS time after time.","brand":"OS","offers":[{"title":"Default Title","offer_id":36038069059745,"sku":"L-OS35430","price":472.5,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0432\/8584\/0033\/products\/l-os35430.jpg?v=1607966814"},{"product_id":"o-s-fr7-420-sirius-7","title":"O.S. FR7-420 Sirius 7","description":"Since 1986, O.S. owners have enjoyed the unique experience of owning and operating the fabulous FR5-300 Sirius 5 cylinder radial. Models have become bigger over the years and O.S. wanted to release a new radial engine to cater for that market. The result is the gorgeous FR7-420. With 7 cylinders and a capacity increase to nearly 70cc, the FR7-420 offers a dramatic increase in both torque and power. In keeping with the scale image set by the Sirius, the new FR7-420 has been styled in the same way with front pushrods and separate rocker boxes for the inlet and exhaust valves. These totally new cylinder heads are not just about 'style', they offer a more efficient design that contributes to the power output. That neat frontal appearance is maintained by keeping the single, dual needle carburettor at the back and hidden in the centre of the engine mount. The prototype engine shown here will have some detail changes (cast cylinder heads etc) made before release, but the general style will be similar. It would almost be a crime to hide it away in a cowling!\n\nQuality and style this good is something to be proud of owning. The wide range of large propellers recommended makes choosing the right one for your model simple. At these sizes, they could be close to scale!","brand":"OS","offers":[{"title":"Default Title","offer_id":36038069420193,"sku":"L-OS37010","price":4139.98,"currency_code":"GBP","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0432\/8584\/0033\/products\/l-os37010.jpg?v=1607966777"},{"product_id":"o-s-gt15-petrol-w-e-4020-silencer","title":"O.S. GT15 Petrol w\/E-4020 Silencer","description":"The GT15 is equivalent in power to an OS 75AX and is designed to fit in place of a .61-.91 engine but give you the efficiency of a petrol engine. The new 61H carburetor design is made specifically for this engine and features an angled needle valve assembly for safer use.\u003cbr\u003e\u003cbr\u003eIgnition is provided by a sophisticated unit that is also common to many OS petrol engines. The main HT lead is shielded to prevent spurious emissions and the spark is delivered by a high quality CM-6 spark plug. Not quite a fit and forget system but pretty close!!\u003cbr\u003e\u003cbr\u003eOS engines are never the cheapest, but like all things in life, you get what you pay for and every OS is guaranteed to have the very best quality, time after time.","brand":"OS","offers":[{"title":"Default Title","offer_id":36038069878945,"sku":"L-OS38160","price":382.48,"currency_code":"GBP","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0432\/8584\/0033\/products\/l-os38160.jpg?v=1607966748"},{"product_id":"o-s-glowplug-no-10-a5-cool","title":"OS Engine Glow plug No 10 (A5) cold OSMG2693","description":"Glow Plugs\u003cbr\u003eTough Enough to Take the Heat.\u003cbr\u003e\u003cbr\u003eGetting the best engine performance means choosing the right glow plug, which depends on a number of different factors – the engine type, air-fuel mix, nitro percentage, and even air temperature.\u003cbr\u003e\u003cbr\u003eWhat's more, the right glow plug will change as conditions change. Keeping a range of glow plugs on hand will help you fine-tune glow heat and enjoy maximum performance under all conditions.\u003cbr\u003e\u003cbr\u003eGenerally, hot plugs provide better idle and acceleration than cold plugs. Cold plugs will produce more power but may idle more roughly and be harder to tune.","brand":"OS","offers":[{"title":"Default Title","offer_id":36038070141089,"sku":"L-OS71605100","price":14.23,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0432\/8584\/0033\/products\/l-os71605100.jpg?v=1607966734"},{"product_id":"o-s-glowplug-no-6-a3-hot","title":"OS Glow Plug A3 No.6","description":"Glow Plugs\u003cbr\u003eTough Enough to Take the Heat.\u003cbr\u003e\u003cbr\u003eGetting the best engine performance means choosing the right glow plug, which depends on a number of different factors – the engine type, air-fuel mix, nitro percentage, and even air temperature.\u003cbr\u003e\u003cbr\u003eWhat's more, the right glow plug will change as conditions change. Keeping a range of glow plugs on hand will help you fine-tune glow heat and enjoy maximum performance under all conditions.\u003cbr\u003e\u003cbr\u003eGenerally, hot plugs provide better idle and acceleration than cold plugs. Cold plugs will produce more power but may idle more roughly and be harder to tune.","brand":"OS","offers":[{"title":"Default Title","offer_id":36038071517345,"sku":"L-OS71605300","price":8.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0432\/8584\/0033\/products\/l-os71605300.jpg?v=1647124848"},{"product_id":"o-s-glowplug-no-7-medium-hot","title":"O.S. Glowplug No.7 (Medium\/Hot)","description":"A Medium\/Hot glowplug for most types of aero or heli engine. A completely new design of coil is used to enhance performance.  Particularly suited to engines running slightly rich to give a stable idle, broad peak needle setting and punchy acceleration. Is very practical for lower aircraft RPM applications. Helicopters will benefit from aa more stable hovering RPM too. Similar specification to Enya no3","brand":"OS","offers":[{"title":"Default Title","offer_id":36038071812257,"sku":"L-OS71607100","price":10.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0432\/8584\/0033\/products\/l-os71607100.jpg?v=1647124861"},{"product_id":"o-s-glowplug-no-8-medium","title":"OS Glow Plug No. 8 R\/C \u0026 C\/L","description":"Tough Enough to Take the Heat.\u003cbr\u003e\u003cbr\u003eGetting the best engine performance means choosing the right glow plug, which depends on a number of different factors – the engine type, air-fuel mix, nitro percentage, and even air temperature.\u003cbr\u003e\u003cbr\u003eWhat's more, the right glow plug will change as conditions change. Keeping a range of glow plugs on hand will help you fine-tune glow heat and enjoy maximum performance under all conditions.\u003cbr\u003e\u003cbr\u003eGenerally, hot plugs provide better idle and acceleration than cold plugs. Cold plugs will produce more power but may idle more roughly and be harder to tune.","brand":"OS","offers":[{"title":"Default Title","offer_id":36038074040481,"sku":"L-OS71608001","price":8.5,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0432\/8584\/0033\/products\/l-os71608001.jpg?v=1607966704"},{"product_id":"o-s-glowplug-type-f-hot","title":"OS F Four Stroke Plug OSMG2692 L-1680","description":"Getting the best engine performance means choosing the right glow plug, which depends on a number of different factors – the engine type, air-fuel mix, nitro percentage, and even air temperature.\u003cbr\u003e\u003cbr\u003eWhat's more, the right glow plug will change as conditions change. Keeping a range of glow plugs on hand will help you fine-tune glow heat and enjoy maximum performance under all conditions.\u003cbr\u003e\u003cbr\u003eGenerally, hot plugs provide better idle and acceleration than cold plugs. Cold plugs will produce more power but may idle more roughly and be harder to tune.","brand":"OS","offers":[{"title":"Default Title","offer_id":36038075449505,"sku":"L-OS71615009","price":11.5,"currency_code":"GBP","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0432\/8584\/0033\/products\/l-os71615009.jpg?v=1607966698"},{"product_id":"o-s-glowplug-type-p4-super-hot","title":"O.S. Glow plug Type P4 (Super Hot) OSMG2697","description":"Super hot plug designed for Turbo head engines.","brand":"OS","offers":[{"title":"Default Title","offer_id":36038077907105,"sku":"L-OS71641400","price":9.99,"currency_code":"GBP","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0432\/8584\/0033\/products\/l-os71641400.jpg?v=1607966693"},{"product_id":"o-s-glowplug-type-p5-very-hot","title":"O.S. P5 Glow Plug","description":"Suited for .18 - .28 off-road racing turbo head style engines. This 'hot' plug is great for use when the temperature is high, you want to run the engine leaner or you are using high-nitro fuel.","brand":"OS","offers":[{"title":"Default Title","offer_id":36038078169249,"sku":"L-OS71641500","price":24.53,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0432\/8584\/0033\/products\/l-os71641500.jpg?v=1607966687"},{"product_id":"o-s-glowplug-type-p8-cold","title":"O.S. Glowplug Type P8 (Cold)","description":"For 21 class racing engines of T~type inner head. Use when atmospheric temperature\u003cbr\u003eis high.\t\u003cbr\u003e\t\u003cbr\u003e      ","brand":"OS","offers":[{"title":"Default Title","offer_id":36038078660769,"sku":"L-OS71641800","price":8.25,"currency_code":"GBP","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0432\/8584\/0033\/products\/l-os71641800.jpg?v=1607966682"},{"product_id":"o-s-glowplug-type-rp6-hot","title":"O.S. Glowplug Type RP6 (Hot)","description":"O.S. Glowplug Type RP6 (Hot)","brand":"OS","offers":[{"title":"Default Title","offer_id":36038078922913,"sku":"L-OS71642060","price":11.25,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0432\/8584\/0033\/products\/l-os71642060.jpg?v=1607966677"},{"product_id":"o-s-glowplug-type-lc3-hot","title":"OS Glow Plug LC3 Hot Long Reach for R\/C cars Hot OSMG2700","description":"Glow Plugs\u003cbr\u003eTough Enough to Take the Heat.\u003cbr\u003e\u003cbr\u003eGetting the best engine performance means choosing the right glow plug, which depends on a number of different factors – the engine type, air-fuel mix, nitro percentage, and even air temperature.\u003cbr\u003e\u003cbr\u003eWhat's more, the right glow plug will change as conditions change. 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