I'm using a 10.5t in my Bmax, and its as quick as anyone else. The 'secret' is in the ESC - I'm using an LRP Stockspec and I'm running dynamic timing advance ('boost'). This allows a 10.5t to be as quick as a 6.5t. The beauty is that adjusting the degree of boost tames it for indoors (7.5t equivalent) and makes it wilder outdoors (6.5t) all from one motor. Runs quite hot though, and will probably kill the motor faster.
I'm geared at 25/81 with an Orion 10.5t
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Yz4 - Yz2
DEX210 - Cobra 4210- DEX410
RC10 Team - Manta Ray - RC10T
Mini Trophy - Blizzard - Wheely King
Tz4 - GT24B
BMRCC
Emergency back-up race controller
(but only if nobody better is available)
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