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发表于 2011-3-21 17:07:09
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for single cylinder,
4 I# Z+ F, Y! q7 x% `0 v2 c( f5 m1. Weigh the rotating parts (bottom of connecting rod, lower connecting rod bearing, counterweight pin), @% s) ~3 a$ K( \( s% T7 n
2. Weight the reciprocating parts (piston, rings, wrist pin, top of connecting rod, top connecting rod bearing)
+ y$ b, o8 q# b3. Use 100% of the weight from #1 and 50% of the weight from #2.
( w; B& d0 d) r; f- o7 _0 @: I4. multiply result of #3 by 50% of the stroke length to get the torque needed for the counterweight
+ G' s A9 y; Y3 F7 W |
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