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Old 07-16-2008, 09:00 AM   #1
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Default 17.5 and 13.5 Gearing

I have a 17.5 and a 13.5, and i was wondering what i need to gear it at. I Run an Xray 007. So does anyone know what to gear those motors at?
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Old 07-16-2008, 09:36 AM   #2
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Well taking all the variables out, Carpet, Foam, Rubber, motor brand, start around the following:

13.5 = 4.5 - 5.0 FDR
17.5 = 4.0 - 4.5 FDR
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Old 07-16-2008, 09:59 AM   #3
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Thank you that helped
If anyone else has any other insight on what to gear a 13.5 or a 17.5 at, please do tell.
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Old 07-16-2008, 10:19 AM   #4
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This is something you need to find out on your own as there really isn't a definitive answer. Even bl motors differ some from one to the next, and considering that no one knows the diameter or your tires or the track length you're running or your batteries it's impossible to say for sure.
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Old 07-16-2008, 12:17 PM   #5
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But they are good starting points. Try to temp your motor @ 140 .
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Old 07-16-2008, 10:55 PM   #6
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I can gear as low as 3.5 for the 17.5, I don't have a hammer throttle so my motor temps around 155-160 after 5.
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Old 07-17-2008, 03:56 PM   #7
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Thanks guys this really helped!!
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