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View Full Version : b4 gearing 6.5

scott
26-10-2009, 06:59 PM
just bought a losi 6.5 combo ,for my b4 .I have a 78 spur gear just wondering what pinion is recommended for a low traction fairy tight track
jono83
26-10-2009, 07:05 PM
i would start with a 21-22 and see how hot it gets