{"product_id":"o-s-speed-b2105-nitro-motor","title":"OS Speed ​​B2105 Nitro Engine","description":"\u003cp data-start=\"379\" data-end=\"777\"\u003eThe \u003cstrong data-start=\"383\" data-end=\"403\"\u003eOS Speed ​​B2105\u003c\/strong\u003e is the logical next step in the evolution of the successful \u003cstrong data-start=\"460\" data-end=\"469\"\u003eB2104\u003c\/strong\u003e and is aimed at discerning \u003cstrong data-start=\"505\" data-end=\"531\"\u003e1:8 scale off-road racers\u003c\/strong\u003e who want to combine maximum performance with excellent drivability. Extensive revisions to \u003cstrong data-start=\"639\" data-end=\"675\"\u003ethe crankshaft, pistons, and cylinder liners\u003c\/strong\u003e have \u003cstrong data-start=\"738\" data-end=\"776\"\u003esignificantly improved not only the power characteristics but also the overall performance\u003c\/strong\u003e .\u003c\/p\u003e\n\u003cp data-start=\"779\" data-end=\"1109\"\u003e Compared to the B2104, the B2105 offers \u003cstrong data-start=\"819\" data-end=\"878\"\u003emore torque in the mid and upper rev ranges\u003c\/strong\u003e , while the torque at lower revs is more consistent and easier to control. This makes the engine \u003cstrong data-start=\"993\" data-end=\"1024\"\u003enoticeably easier to ride\u003c\/strong\u003e , especially on technically demanding tracks with varying grip conditions.\u003c\/p\u003e\n\u003cp data-start=\"1111\" data-end=\"1271\"\u003e Another advantage is the \u003cstrong data-start=\"1140\" data-end=\"1183\"\u003eweight reduction on the outer cooling head\u003c\/strong\u003e , which improves the vehicle balance and contributes to even finer throttle response.\u003c\/p\u003e\n\u003cp data-start=\"1273\" data-end=\"1613\"\u003e The \u003cstrong data-start=\"1277\" data-end=\"1308\"\u003enewly developed crankshaft\u003c\/strong\u003e features optimized valve timing and a revised counterbalance. Combined with the proven \u003cstrong data-start=\"1426\" data-end=\"1452\"\u003eOS Speed ​​DLC coating\u003c\/strong\u003e , this results in extremely \u003cstrong data-start=\"1477\" data-end=\"1504\"\u003elinear power delivery\u003c\/strong\u003e that is available across the entire rev range – without any harshness or power spikes.\u003c\/p\u003e\n\u003cp data-start=\"1615\" data-end=\"1931\"\u003e \u003cstrong data-start=\"1620\" data-end=\"1647\"\u003eThe cylinder and cylinder liner\u003c\/strong\u003e have also been further developed: The new exhaust port geometry increases efficiency and torque. The \u003cstrong data-start=\"1741\" data-end=\"1773\"\u003ecarburetor is based on the 22E\u003c\/strong\u003e , but has been equipped with an improved \u003cstrong data-start=\"1811\" data-end=\"1840\"\u003eidle adjustment screw\u003c\/strong\u003e , resulting in a more stable fuel supply and easier tuning.\u003c\/p\u003e\n\u003cp data-start=\"1933\" data-end=\"2230\"\u003e Additionally, a \u003cstrong data-start=\"1959\" data-end=\"1999\"\u003esurface-treated stop plate\u003c\/strong\u003e in the rear engine cover reduces friction on the connecting rod and extends its service life. The \u003cstrong data-start=\"2094\" data-end=\"2127\"\u003eceramic rear ball bearing\u003c\/strong\u003e , known from OS Speed's top racing engines, ensures minimal losses and high durability.\u003c\/p\u003e\n\u003cp data-start=\"2232\" data-end=\"2351\"\u003e The B2105 is therefore a \u003cstrong data-start=\"2256\" data-end=\"2293\"\u003etrue high-end off-road racing engine\u003c\/strong\u003e that perfectly combines performance, control and durability.\u003c\/p\u003e\n\u003chr data-start=\"2353\" data-end=\"2356\"\u003e\n\u003ch2 data-start=\"2358\" data-end=\"2371\"\u003e Highlights\u003c\/h2\u003e\n\u003cul\u003e\n\n\u003cli data-start=\"2374\" data-end=\"2409\"\u003e 1:8 Nitro off-road racing engine (buggy)\u003c\/li\u003e\n\n\u003cli data-start=\"2412\" data-end=\"2454\"\u003e Further development of \u003cstrong data-start=\"2434\" data-end=\"2454\"\u003eOS Speed ​​B2104\u003c\/strong\u003e\n\n\u003c\/li\u003e\n\n\u003cli data-start=\"2457\" data-end=\"2522\"\u003e Revised crankshaft with optimized timing and counterweights\u003c\/li\u003e\n\n\u003cli data-start=\"2525\" data-end=\"2578\"\u003e\n\n \u003cstrong data-start=\"2525\" data-end=\"2557\"\u003eDLC-coated crankshaft\u003c\/strong\u003e for minimal friction\u003c\/li\u003e\n\n\u003cli data-start=\"2581\" data-end=\"2634\"\u003e More torque in the mid and upper rev range\u003c\/li\u003e\n\n\u003cli data-start=\"2637\" data-end=\"2684\"\u003e More consistent low-end response for improved drivability\u003c\/li\u003e\n\n\u003cli data-start=\"2687\" data-end=\"2741\"\u003e Reduced mass at the cooling head for improved handling\u003c\/li\u003e\n\n\u003cli data-start=\"2744\" data-end=\"2787\"\u003e New exhaust port for increased efficiency\u003c\/li\u003e\n\n\u003cli data-start=\"2790\" data-end=\"2864\"\u003e Improved \u003cstrong data-start=\"2803\" data-end=\"2829\"\u003e22E-based carburetor\u003c\/strong\u003e with more stable idle setting\u003c\/li\u003e\n\n\u003cli data-start=\"2867\" data-end=\"2926\"\u003e Low-friction stop plate for longer connecting rod lifespan\u003c\/li\u003e\n\n\u003cli data-start=\"2929\" data-end=\"2964\"\u003e \u003cstrong data-start=\"2929\" data-end=\"2964\"\u003eCeramic rear ball bearing\u003c\/strong\u003e\n\u003c\/li\u003e\n\n\u003cli data-start=\"2967\" data-end=\"3020\"\u003e Very linear, easily controllable power delivery \u003c\/li\u003e\n\n\n\u003c\/ul\u003e\n\u003chr data-start=\"3022\" data-end=\"3025\"\u003e\n\u003ch2 data-start=\"3027\" data-end=\"3044\"\u003e Area of ​​application\u003c\/h2\u003e\n\u003cul\u003e\n\n\u003cli data-start=\"3047\" data-end=\"3072\"\u003e 1:8 Buggy Nitro Offroad\u003c\/li\u003e\n\n\u003cli data-start=\"3075\" data-end=\"3114\"\u003e National \u0026amp; international racing series\u003c\/li\u003e\n\n\u003cli data-start=\"3117\" data-end=\"3151\"\u003e High-grip and low-grip tracks\u003c\/li\u003e\n\n\n\u003c\/ul\u003e","brand":"O.S.","offers":[{"title":"Default Title","offer_id":52648663613778,"sku":"1EK00","price":382.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0783\/0277\/3586\/files\/os-engines-moteur-os-speed-b2105-1ek00.jpg?v=1770392279","url":"https:\/\/checkout.rcxx.us\/en\/products\/o-s-speed-b2105-nitro-motor","provider":"RCXX - Shop for RC Models, DieCast \u0026 Plastic Models","version":"1.0","type":"link"}