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Gear ratio options on TSR 1/32 scale chassis


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#1 TSR

TSR

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Posted 15 October 2012 - 08:56 PM

Your Sunred SR21 is an incredible racer.
I'm going to order another one.

Question:
My track is very twisty and the straights are fairly short.
I'd like the highest gear ratio I can fit on this car.
What pinion/spur gears would you recommend?
I'm using your D3 motor.
F. L.


TSR has four basic gear ratios available but the use of the TSR-Ortmann Urethane based tires on the 1/32 scale chassis places limits on what can be used because of the smaller tire diameter.
The stock ratio uses a 14T pinion and a 45T spur gear. This provides a 3.21 ratio.
The largest spur gear that can reasonably fit is a 47T, using the 12T pinion. This provides a much shorter ratio of 3.91. Hopefully and using the torque of the TSR D3 motor, it should improve acceleration and braking, at the risk of becoming dizzy on a short course!

Philippe de Lespinay
 
"We are the D..., uh, the Borg. Lower your shields and surrender your ships. We will add your biological and technological distinctiveness to our own. Your culture will adapt to service us. Resistance is futile"









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