Clutch engagement to small spur gear ?


Well-Known Member
SLO California
Direct drive doesn't need any calculations for gearing, just the correction factor.

Then factor in rear gear ratio. A direct engine to dyno it a 1:1 ratio. That's how we did all the engines at the machine shop
direct is 1:1 rpm/torque , for brake HP you need to adjust the rpm based on the gear ratio. Simple calculation If I measure 2132 rpm and have a 5.7:1 ratio it's 2132x5.7 =12,152 RPM at the crank .
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