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Old 10-19-2009, 05:12 AM
  #471  
Dragonfire
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Originally Posted by stephenianjames
Hey guys,

I have an RB30 and 17.5t motor arriving tomorrow, and I need to get hold of some spurs/pinions fast for racing on Wednesday night.

What is a good ballpark for an FDR using the 17.5t in a touring car with turbo on a tight track?

I know there are alot of variables but I'm just looking for a ballpark for its debut.

Thanks,

Steve
Start around around 50mm and go from there. The speedy has slightly more straight line speed than an SPX so you could also compare it to that and gear down 1 tooth.
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