b4.1 gear ratio chart

[jampat2004]

hi all
can anyone let me know if there is a gear ratio chart a round for the b4.1 then i can get my gearing correct am having a few x12 motor over heating problems on tight indoor tracks.

[MiCk B.]

Overall ratio is Spur/pinion x internal ratio.

The internal ratio for the B4/B4.1 is 2.6.

Create a gear chart here: http://www.gearchart.com

MiCk B. :-)

[bigred5765]

its simple
spur gear divided buy pinion times internal gear ratio
so lets say 81 / 21 = 3.857 x 2.61 =10.06
81 is spur gear size or what ever size u have on
21 is pinion size or what ever size u have on
2.61 is internal gear ration for the b4

[Zoea]

Funny you should ask

What's a good Final Drive ratio for bashing, onroad, and speed runs (3 ratios)? Cheers