Hi Andy
I believe the kit spur is 84t, 48dp, thus
20t pinion = 7.14
21t pinion = 6.80
Although we run 7.5, which would be a 19t pinion, but who are we to disagree with Mr Ball, he is the man to beat at Garforth
Our T2 gives a chart showing both FDR & Rollout. We will not be at GTCC this weekend but should be there next time, I will let you have a copy of the sheet
Good luck
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