The great news is Novak posts their recommended gear ratio's depending on the motor / car combo.. Novak recommends an 8:1 FDR for their 10.5T when used with a 4WD buggy. This means you should target a 23T-24T pinion for the 501X using the stock 91T spur gear (both of those pinions range between the 8:1 ratio).
This should help you to target the sweet spot for gearing and should keep your temps well below 160F.
I can post a walkthough for calculating gearing (using
www.gearchart.com) if you want to know how I got these results.
Hope this helps.
Quote:
Originally Posted by BORMAC
Hi guys.
Its been years since ive had anything to do with my 501x let alone modern day racing (vintage stuff usualy gets all my attention- LOL). I guess what I first need to know is a good place to start with gearing for a Novak 10.5 motor in this car. Im running an older GTB which has the lipo cut off function (if that gives any idea of the age/tech of the BL gear Im using).
The other thing is set up. Im still not completely satisfied I understand roll centres so was wondering what settings I should be aiming for when it comes to roll centres and the like. The car will be driven on a dry loose dirt track that rarely grooves up so any constructive advice which will keep the rear end holding the tracks surface would be appreciated.
Thankyou in advance- Jason.
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