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发表于 2011-3-21 17:07:09
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for single cylinder,
" G/ l1 }! q/ }) J8 f1. Weigh the rotating parts (bottom of connecting rod, lower connecting rod bearing, counterweight pin)' c$ O% i1 B1 e6 J0 a* K3 R6 b
2. Weight the reciprocating parts (piston, rings, wrist pin, top of connecting rod, top connecting rod bearing)0 `2 ]9 M+ @" O
3. Use 100% of the weight from #1 and 50% of the weight from #2.
% g2 A6 X. r3 W1 b; L) t4. multiply result of #3 by 50% of the stroke length to get the torque needed for the counterweight; b {. o8 n9 b6 h" a0 U# X- k& ^
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