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Old 11-03-2009, 10:23 AM   #1
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Default largest pinion?????

I have a 72 spur and I need to find the largest pinion that would fit into a TC4. I tried a 39T and it didn't fit. Instead of buying a whole bunch and trying them, I thought someone could help me out. These are 48P. Thanks.
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Old 11-03-2009, 10:33 AM   #2
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you may have to go to 64p to get the ratio you are trying to get with 48p
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Old 11-03-2009, 11:13 AM   #3
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I want to stay with 48p to cut down on cost.
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Old 11-03-2009, 11:15 AM   #4
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Go to a smaller spur. Robinson Racing makes a 60T spur.
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Old 11-03-2009, 03:50 PM   #5
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I think 31t or 32t is about the biggest you can go with 72t spur. like said above grab a 60t rrp spur gear. part number rrp1860, tower has them. no you will not be able to run smaller than 29-30t pinion with the 60t spur. hope this helps.
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Old 11-03-2009, 04:17 PM   #6
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A little heavy, but should work.
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