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fastinfastout

30-06-2010 04:53 PM

bmax, biggest pinion to fit with 81t spur ?

Hi, had a bmax a while back, but due to the gearing muck around back then, it was very hard to get the required gear ratio for spec class. Now with the advanced esc's, I have more scope to play with fdr's.

With a yokomo 81t spur, what is the biggest pinion I can fit on the bmax, with no nightmare dremeling?

nottmboy

30-06-2010 07:31 PM

think it's only a 19? 20 goes on but makes for a tight mesh, a dremel is your best friend

CODMAN

30-06-2010 07:58 PM

I've been using 22T with an 84T spur... So I'm sure the 81T Spur can take a bigger pinion...

Quote:

Originally Posted by fastinfastout (Post 390613)

09 lex 250

30-06-2010 08:01 PM

25-26 topps

Darren Boyle

30-06-2010 10:24 PM

19 (20 at a push) is the biggest you can run on the 87 spur (not an 81 as asked) which should be 5/6 teeth higher that this as suggested.....

fastinfastout

01-07-2010 01:31 PM

thanks guys.

seems with the advice most likely a 24 will fit with a 81 giving just under 8fdr which should be right on the money with tekin 203 and 17.5

fouadouille

06-07-2010 07:17 PM

pinion 20 :thumbsup:
under 20 it's not possible

fastinfastout

07-07-2010 07:59 AM

Quote:

Originally Posted by fouadouille (Post 392010)

pinion 20 :thumbsup:
under 20 it's not possible

maybe for kit spur 87t, but not 81t!

someone has already mentioned 22t fits with 84t

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