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jampat2004
27-02-2011, 10:49 PM
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.:confused:

MiCk B.
27-02-2011, 10:56 PM
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
27-02-2011, 10:58 PM
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
02-03-2011, 12:35 AM
Funny you should ask (http://www.arroyoc.com/index.cfm?fuseaction=utilities.plotchart2&showheader=No&fromflash=Yes&Chartname=Associated%20B4&Transmission=2.6&Spur=78&Pinion=28&Tire=&RPM=&TargetRollout=No&ChartType=Gear%20Ratio&Type=Gear&Plot=mid):)

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