bmax, biggest pinion to fit with 81t spur ?

[fastinfastout]

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]

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

[CODMAN]

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

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?

[09 lex 250]

25-26 topps

[Darren Boyle]

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]

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]

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

[fastinfastout]

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