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Old 06-26-2008, 03:47 PM   #1
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Default What is best starting point for gearing?

on a ft b4 with a 12x2 checkpoint?
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Old 06-26-2008, 06:39 PM   #2
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I would start with an 18T, but thats just me.
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Old 06-26-2008, 07:15 PM   #3
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18/81 - 21/81 depending on the track you are running on
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Old 06-26-2008, 07:55 PM   #4
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i have a 21 in it now but the motor seems to get hotter than i like
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Old 06-26-2008, 07:58 PM   #5
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yea my motor gets hott to... so does my friends. its almost untouchable when it comes off the track
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Old 06-26-2008, 08:09 PM   #6
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is that ok or should i drop it down to a 20t?
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Old 06-26-2008, 09:03 PM   #7
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i dont think it would hurt if you are only running it in a 5 min race
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Old 06-26-2008, 11:47 PM   #8
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will dropping it make it hotter?
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Old 06-27-2008, 04:50 AM   #9
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This is how i work it out for a brushed (wich is like never)

http://www.ultimaterc.com/forums/showthread.php?t=62860
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Old 06-27-2008, 08:00 AM   #10
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The lower the teeth on the pinion the cooler the motor will run. The higher the teeth on the pinion the hotter the motor will run.

If your motor is really hot drop a couple of teeth on the pinion and you will run lower temps.

If its almost untouchable your gearing is way to high, and the excessive heat will burn out the motor prematurely.

Try an 18t pinion and go up from there.
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