{"product_id":"second-hand-2-stroke-petrol-engine-sachs-4-2-sachs-dolmar-4-2-large-scale-r-c-petrol-engine-mahle-cylinder","title":"Second hand 2-Stroke Petrol Engine Sachs 4.2 \/ Sachs-Dolmar 4.2 Large-Scale R\/C Petrol Engine – MAHLE Cylinder","description":"\u003cblockquote data-start=\"1770\" data-end=\"4147\"\u003e\n\u003cp dir=\"auto\" data-start=\"1772\" data-end=\"1851\" class=\"PDq2pG_selectionAnchorContainer\"\u003e\u003cstrong data-start=\"1772\" data-end=\"1851\"\u003eSachs 4.2 \/ Sachs-Dolmar 4.2 Large-Scale R\/C Petrol Engine – MAHLE Cylinder\u003c\/strong\u003e\u003cspan class=\"PDq2pG_selectionAnchor\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp dir=\"auto\" data-start=\"1856\" data-end=\"2145\"\u003eVintage German Sachs\/Dolmar 4.2 cu in two-stroke petrol engine adapted for large-scale radio-control aircraft. The engine is fitted with a genuine MAHLE cylinder assembly and Tillotson-style diaphragm carburettor, with the characteristic Sachs\/Dolmar construction and heavy-duty crankcase.\u003c\/p\u003e\n\u003cp dir=\"auto\" data-start=\"2150\" data-end=\"2491\"\u003eThe Sachs 4.2 is approximately 69 cc in displacement and is a single-cylinder, air-cooled two-stroke petrol engine originally developed from the Sachs\/Dolmar chainsaw power unit. These engines became popular in large-scale R\/C modelling because of their substantial torque, robust construction and ability to swing large-diameter propellers.\u003c\/p\u003e\n\u003cp dir=\"auto\" data-start=\"2496\" data-end=\"2781\"\u003eThe MAHLE marking visible on the cylinder is significant. MAHLE has a long-established reputation as a German manufacturer of pistons and engine components, with its engineering history dating back to the early 1920s. The Sachs\/Dolmar engines used MAHLE cylinder and piston components.\u003c\/p\u003e\n\u003cp dir=\"auto\" data-start=\"2786\" data-end=\"3233\"\u003eSachs 4.2 engines were particularly associated with large-scale aerobatic and scale aircraft during the late 1980s and 1990s. Contemporary R\/C competition and modelling literature records Sachs 4.2 engines powering aircraft such as the Ultimate, Extra and large-scale warbirds. Propeller sizes around 21×12 and 22×12 were used in documented applications, although the appropriate propeller depends on the particular engine configuration and setup.\u003c\/p\u003e\n\u003cp dir=\"auto\" data-start=\"3238\" data-end=\"3522\"\u003eThis is a substantial vintage model-aircraft engine intended for large-scale models rather than conventional sport models. The engine incorporates a large finned aluminium cylinder, Tillotson-style carburettor, petrol ignition system, heavy-duty crankshaft and large propeller driver.\u003c\/p\u003e\n\u003cp dir=\"auto\" data-start=\"3527\" data-end=\"3990\"\u003e\u003cstrong data-start=\"3527\" data-end=\"3541\"\u003eCondition:\u003c\/strong\u003e Used vintage engine showing age-related cosmetic wear, oxidation and staining consistent with its age and previous use. The engine turns over freely. It has not been tested by me running, so no guarantee of starting or running performance is made. The ignition wiring is present but has loose wire ends and should be checked before use. The carburettor and fuel system would also benefit from inspection\/service before attempting to run the engine.\u003c\/p\u003e\n\u003cp dir=\"auto\" data-start=\"3995\" data-end=\"4147\"\u003eA particularly interesting engine for collectors of vintage large-scale R\/C equipment, Sachs\/Dolmar engines and early petrol model-aircraft powerplants.\u003c\/p\u003e\n\u003c\/blockquote\u003e\n\u003ch3 data-section-id=\"jcdhrr\" dir=\"auto\" data-start=\"4149\" data-end=\"4170\"\u003eTechnical details\u003c\/h3\u003e\n\u003cdiv dir=\"auto\" class=\"group TyagGW_tableContainer\"\u003e\n\u003cdiv class=\"TyagGW_tableWrapper flex flex-col-reverse w-fit\" tabindex=\"-1\"\u003e\n\u003ctable data-start=\"4172\" data-end=\"4756\" dir=\"auto\" class=\"w-fit min-w-(--thread-content-width)\"\u003e\n\u003cthead data-start=\"4172\" data-end=\"4199\"\u003e\n\u003ctr data-start=\"4172\" data-end=\"4199\"\u003e\n\u003cth data-start=\"4172\" data-end=\"4188\" data-col-size=\"sm\" class=\"last:pe-10\"\u003eSpecification\u003c\/th\u003e\n\u003cth data-start=\"4188\" data-end=\"4199\" data-col-size=\"md\" class=\"last:pe-10\"\u003eDetails\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody data-start=\"4210\" data-end=\"4756\"\u003e\n\u003ctr data-start=\"4210\" data-end=\"4271\"\u003e\n\u003ctd data-start=\"4210\" data-end=\"4238\" data-col-size=\"sm\"\u003e\u003cstrong data-start=\"4212\" data-end=\"4237\"\u003eManufacturer \/ origin\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd data-start=\"4238\" data-end=\"4271\" data-col-size=\"md\"\u003eSachs \/ Sachs-Dolmar, Germany\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-start=\"4272\" data-end=\"4337\"\u003e\n\u003ctd data-start=\"4272\" data-end=\"4290\" data-col-size=\"sm\"\u003e\u003cstrong data-start=\"4274\" data-end=\"4289\"\u003eEngine type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd data-start=\"4290\" data-end=\"4337\" data-col-size=\"md\"\u003eSingle-cylinder, air-cooled 2-stroke petrol\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-start=\"4338\" data-end=\"4390\"\u003e\n\u003ctd data-start=\"4338\" data-end=\"4357\" data-col-size=\"sm\"\u003e\u003cstrong data-start=\"4340\" data-end=\"4356\"\u003eDisplacement\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd data-start=\"4357\" data-end=\"4390\" data-col-size=\"md\"\u003eApprox. \u003cstrong data-start=\"4367\" data-end=\"4388\"\u003e4.2 cu in \/ 69 cc\u003c\/strong\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-start=\"4391\" data-end=\"4415\"\u003e\n\u003ctd data-start=\"4391\" data-end=\"4406\" data-col-size=\"sm\"\u003e\u003cstrong data-start=\"4393\" data-end=\"4405\"\u003eCylinder\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd data-start=\"4406\" data-end=\"4415\" data-col-size=\"md\"\u003eMAHLE\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-start=\"4416\" data-end=\"4475\"\u003e\n\u003ctd data-start=\"4416\" data-end=\"4434\" data-col-size=\"sm\"\u003e\u003cstrong data-start=\"4418\" data-end=\"4433\"\u003eCarburettor\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd data-start=\"4434\" data-end=\"4475\" data-col-size=\"md\"\u003eTillotson-style diaphragm carburettor\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-start=\"4476\" data-end=\"4517\"\u003e\n\u003ctd data-start=\"4476\" data-end=\"4491\" data-col-size=\"sm\"\u003e\u003cstrong data-start=\"4478\" data-end=\"4490\"\u003eIgnition\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd data-start=\"4491\" data-end=\"4517\" data-col-size=\"md\"\u003ePetrol ignition system\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-start=\"4518\" data-end=\"4590\"\u003e\n\u003ctd data-start=\"4518\" data-end=\"4534\" data-col-size=\"sm\"\u003e\u003cstrong data-start=\"4520\" data-end=\"4533\"\u003ePropeller\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd data-start=\"4534\" data-end=\"4590\" data-col-size=\"md\"\u003eApproximately \u003cstrong data-start=\"4550\" data-end=\"4568\"\u003e21×12 to 22×12\u003c\/strong\u003e commonly documented\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-start=\"4591\" data-end=\"4637\"\u003e\n\u003ctd data-start=\"4591\" data-end=\"4609\" data-col-size=\"sm\"\u003e\u003cstrong data-start=\"4593\" data-end=\"4608\"\u003eApplication\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd data-start=\"4609\" data-end=\"4637\" data-col-size=\"md\"\u003eLarge-scale R\/C aircraft\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-start=\"4638\" data-end=\"4686\"\u003e\n\u003ctd data-start=\"4638\" data-end=\"4648\" data-col-size=\"sm\"\u003e\u003cstrong data-start=\"4640\" data-end=\"4647\"\u003eEra\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd data-start=\"4648\" data-end=\"4686\" data-col-size=\"md\"\u003ePrimarily late 1980s–1990s R\/C use\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-start=\"4687\" data-end=\"4756\"\u003e\n\u003ctd data-start=\"4687\" data-end=\"4703\" data-col-size=\"sm\"\u003e\u003cstrong data-start=\"4689\" data-end=\"4702\"\u003eCondition\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd data-start=\"4703\" data-end=\"4756\" data-col-size=\"md\"\u003eUsed\/vintage; turns over freely; running untested\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cp dir=\"auto\" data-start=\"4758\" data-end=\"5106\"\u003eOne useful point for your listing: \u003cstrong data-start=\"4793\" data-end=\"4842\"\u003edon't describe it simply as a “Mahle engine.”\u003c\/strong\u003e MAHLE is the component manufacturer visible on the cylinder; the complete engine is best described as a \u003cstrong data-start=\"4947\" data-end=\"4967\"\u003eSachs\/Dolmar 4.2\u003c\/strong\u003e. MAHLE's own history confirms its long-standing role as an engine-component and piston manufacturer. \u003cspan class=\"contents\" data-content-reference-start=\"5023\" data-content-reference-end=\"5042\"\u003e\u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp dir=\"auto\" data-start=\"5108\" data-end=\"5355\"\u003eThe Sachs 4.2 was a serious large-scale R\/C powerplant. Contemporary sources show it being used successfully in aircraft weighing roughly \u003cstrong data-start=\"5246\" data-end=\"5265\"\u003e30 lb and above\u003c\/strong\u003e, including large P-51s, P-47s and aerobatic models. \u003cspan class=\"contents\" data-content-reference-start=\"5254\" data-content-reference-end=\"5286\"\u003e\u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e","brand":"Sachs","offers":[{"title":"Default Title","offer_id":57604047765884,"sku":"SMC-SH-E-Sachs-4.2","price":199.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0432\/8584\/0033\/files\/IMG_5725-2.jpg?v=1791387647","url":"https:\/\/sussex-model-centre.co.uk\/products\/second-hand-2-stroke-petrol-engine-sachs-4-2-sachs-dolmar-4-2-large-scale-r-c-petrol-engine-mahle-cylinder","provider":"Sussex Model Centre","version":"1.0","type":"link"}