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for single cylinder,0 V; q+ i9 r5 g1 L/ P 1. Weigh the rotating parts (bottom of connecting rod, lower connecting rod bearing, counterweight pin)& e. E- d3 \' u( y) { 2. Weight the reciprocating parts (piston, rings, wrist pin, top of connecting rod, top connecting rod bearing) % J \" I+ `0 c0 }( s3. Use 100% of the weight from #1 and 50% of the weight from #2. 5 Q ~4 G4 X: a8 }1 i3 m; Y! i4. multiply result of #3 by 50% of the stroke length to get the torque needed for the counterweight8 @# C$ R/ @% q- o7 D
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