3-speed jack-shaft calculator

GoldenMotor.com

bowljoman

New Member
Aug 7, 2010
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0
Wa
Hey guys,

I put up the jack-shaft calculator again after cleaning out some hacked files.
The sliders control:
  1. Rear Sprocket- the number of teeth on the rear wheel hub
  2. Rear Wheel Size - in inches
  3. Output sprocket of the 3-speed connected to spoke/disc-brake flange
  4. Input Sprocket of the three speed - The driven tooth count of the 3-speed input.
  5. Engine Sprocket - NUmber of teeth on the sprocket of the engine.
  6. Crank to output Ratio - The number of rotations of the crank shaft to the engine sprocket.

http://thebitstream.com/transcomp/

This is a calculator for regular jack-shaft, not a 'shift-kit'
How to use -
Set up up your sprocket and wheel parameters, choose the Nexus inter-3 or the iMotion-3.

Set your estimated stall/clutch-spring engagement RPM, your estimated peak torque, Horse-power, and max RPM.

Then hit the 'Start' Button for a simulated drag-race to max speed.