XRAY T4 2016 - I want to use 64 pitch in my T4

Refsiul22 · **Joined:** Mon May 09, 2016 19:22:27 **Posts:** 6

Hi guys, I'm currently building my T4'16 and was wondering....

Kit comes with 48pitch #84 teeth, but I would like to run 64pitch.

What would be more or less the equivalent size (same diameter for example) for a 64pitch Spur that I should buy? Read somewhere else (as a rule of thumb) to divide 48pitch by 0.75 to get the approx. 64pitch Spur. For example, (84/ 0.75) = 112 teeth. Is that reasonable? Will it fit into my T4? My target FDR is between 5.0 - 5.5.

Please comment below... Thanks!

beale · **Joined:** Tue Dec 18, 2012 12:08:42 **Posts:** 212

Yes that would be right for the spur,
FDR / IR = R
Spur / R = Pinion
5.5 / 1.9 = 2.89
112 / 2.89 = 38 ish

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XRAY T4 2016 - I want to use 64 pitch in my T4

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