Thread: cougar sv what size pinion to use
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Old 30-09-2012
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wingers wingers is offline
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Location: Northampton, UK
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Speed Passion recommend anything between 7.5:1 and 9:1 for that motor.
With an 81 tooth spur your options are:
24/81 = 8.8:1
25/81 = 8.4:1
26/81 = 8.1:1

Assuming you have a standard gearbox...

Wingers
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