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发表于 2011-3-21 17:07:09
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for single cylinder,4 d# L0 ~# A& J) c U
1. Weigh the rotating parts (bottom of connecting rod, lower connecting rod bearing, counterweight pin)
* m( r; H/ f7 P7 o6 r8 a2 {2. Weight the reciprocating parts (piston, rings, wrist pin, top of connecting rod, top connecting rod bearing)* y: i6 z- Z; G) f
3. Use 100% of the weight from #1 and 50% of the weight from #2.
; X% }9 {. U5 E' N: E4. multiply result of #3 by 50% of the stroke length to get the torque needed for the counterweight' a; H4 e+ n4 H C9 ^: S
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