Quote:
Originally Posted by reg
Hi,I will be running a 7.5 x20 in the car,it says on the instructions for the motor "gear ratio of 10.0.1"
could some one help with the right pinion to start on,
also in simple terms how to work it out,
thanks
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I'm running an Orion 6.5 on a 22t pinion, seems to work well on the outside tracks I've been on so far. I've always found the LRP motors like being geared a little lower then Orion or Speedpassion, so a 22 for a 7.5 might not be too far out.
To work out the ratio, I think it goes, number of teeth on spur divided by pinion size, times internal ratio of 2.5. example 81t spur divided by 20t pinion, times 2.5 ratio gives you 10.12.