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Thread: Motors and pinions-Which combo?

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Old 02-23-2008, 07:20 AM   #1
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Default Motors and pinions-Which combo?

I've done a lot of reading, but haven't had any real world experience with RC crawlers so it's tough to compare choices in terms of performance. I started my build with 85t lathes with 9t pinions. on 6 cells. Seems way too slow and stalls bad on vertical climbs. Seems to need more wheel speed. Should I go to 55T motors with the 9t pinions or go to say 12t pinions and stay with the 85t motors

What about batteries, 6 cell, 7, 8?
Thanks for any advice.
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Old 02-23-2008, 07:43 AM   #2
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I'm currently running 70T (hand wound) with the stock 13t pinions and a 7 cell 3000mah pack, I have good wheel speed when needed, It seems to do what I need it to so far, thow I would still like to try the 9t pinions.
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Old 02-23-2008, 07:52 AM   #3
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Thanks for the reply.
Which direction do you think would help me?
Less turn motor or higher tooth pinions?
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Old 02-23-2008, 09:37 AM   #4
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I'd go for a lower turn motor, something like a 55t-65t.

For cells, go with as many as your ESC can handle.
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Old 02-23-2008, 01:46 PM   #5
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On my clod I run 65T Axioms with 8 Tooth pinions and my stall isn't as bad as it used to be.
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Old 02-23-2008, 02:12 PM   #6
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So you guys think the 85t s are too slow?
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Old 02-23-2008, 02:55 PM   #7
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I think switching to a 55T would give you the results you're looking for, and like 4link4eva says, use as many cells as your ESC will allow, more voltage = more wheel speed. In my experience 9 tooth pinions can work well with clods, good low end torque, enough wheel speed.
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Old 02-23-2008, 03:05 PM   #8
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Thanks for the input!
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