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How to Choose Camshafts & Time Them for Maximum Power Des Hammill
Publisher: Veloce Publishing

If you want to increase low-end torque to launch a heavy bike from a stop, or top-end horsepower for HARLEY-DAVIDSON CAMSgreater top speed, choosing the appropriate cam configuration will help you achieve the desired Nevertheless, these variables are critical in determining not only an engine's maximum power output but also the shape of its power curve. The camshaft uses lobes (called cams) that push against the valves to open them as the camshaft rotates; springs on the valves return them to their closed position. The problem with such choices is that the engine seldom spends time in the rpm range favored by such cams. It turns out that there is a direct relationship between the shape of the cam lobes and the way the engine performs in different speed ranges. Duration is the amount of time a valve is opened and is measured in crankshaft degrees. As the camshaft spins, the lobes open and close the intake and exhaust valves in time with the motion of the piston. How to Build & Power Tune Weber & Dellorto DCOE & DHLA Carburettors -3rd Edition (Speedpro) by Des Hammill ISBN 1 874105 60. Torque cams have less valve overlap in general than high rpm HP cams. Our mission is to serve our customers needs by offering the widest and latest selection of premium quality product at low prices while providing excellent customer service. Download How to Choose Camshafts & Time Them for Maximum Power. The key parts of any camshaft are the lobes. How to Choose Camshafts & Time Them for Maximum Power. The more torque your v twin can generate, the bigger In the quest for maximum power output, many-too-many Harley owners choose a late closing, high-rpm cam for their engine.