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This topic contains 3 replies, has 4 voices, and was last updated by Richard Kirlin 2 years, 9 months ago.
Just purchased a tm k9c, I plan on running open 125. The track is 2.2mile 9turns the main straight is a 1/4 mile drag strip. I plan on running a 50mm axle, can anyone give me a good gear ratio for that long of a straight
I would try a 18/21 as a starting point
I’m a italian boy and I’m sorry for my english!!!
Anyway, also I have a tm k9c, it’s very good engine!!! The track with the main straight of 1/4 mile It’s very long. I think that a good starting point to gear ratio is 19×22 !
At 13800 rpm your final speed will be 170 Km/h
I’ve raced TM motors on big road course, a 19/21-22, 18/21-22 will work depending on weight and hight of the person?
best of luck:)
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