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Thread: Possible to gear down only the low speed?

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Old 03-24-2017, 12:29 AM   #1
Quarry Creeper
 
Join Date: Mar 2017
Location: San Diego
Posts: 200
Default Possible to gear down only the low speed?

Hey all,

So I am fairly new to the RC hobby, and have been reading (here Simple Guide to RC Gearing – Radio Control Tips) up on how gearing works, how motors work, etc. I understand that to make my rig slower I want a (tooth count) smaller pinion gear or larger spur gear, and I understand lower turn motors are faster than higher turn motors.

My question is specifically about the 2-speed transmission in the TH. Is is possible to change individual gear sets? IE. Swap out the "low" speed spur gear with a much higher tooth count to gear my TH way down for crawling in the "low" gear, while maintaining the speed of the "high" speed?
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Old 03-24-2017, 08:33 AM   #2
Pebble Pounder
 
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Location: Ridgecrest, CA
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Default Re: Possible to gear down only the low speed?

To my knowledge there are no optional gear sets available for the TW transmission.
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Old 03-24-2017, 05:36 PM   #3
Rock Stacker
 
Join Date: Jan 2017
Location: Adelaide
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Default Re: Possible to gear down only the low speed?

Not that I'm aware of either but I haven't actually looked. Are you using the stock 15t brushed motor?
With the stock motor I got best results with a 24 tooth pinion but it wasn't that quick in high. The stock motor lacks torque so you need to gear for either speed or crawling but the 2 speed allows fair performance for both. Brushless is the answer if you want everything

Last edited by SkiSteve; 03-24-2017 at 05:47 PM.
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Old 03-24-2017, 06:08 PM   #4
Quarry Creeper
 
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Default Re: Possible to gear down only the low speed?

Quote:
Originally Posted by SkiSteve View Post
Not that I'm aware of either but I haven't actually looked. Are you using the stock 15t brushed motor?
With the stock motor I got best results with a 24 tooth pinion but it wasn't that quick in high. The stock motor lacks torque so you need to gear for either speed or crawling but the 2 speed allows fair performance for both. Brushless is the answer if you want everything
My whole truck is stock right now, but I'm putting together lists of parts for the build I have in mind. I want to build a trail truck that can crawl well but still have the ability to do high speed dirt racing. Thats why I was wondering if you could change gear sets individually. If you can't then is will probably swap the motor to a higher turn one and change gears to try and get a decent balance.
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Old 03-25-2017, 05:00 PM   #5
Rock Stacker
 
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Default Re: Possible to gear down only the low speed?

I think your best bet for all round performance would be to go 3s with a compatible motor and gear down. You'll struggle for speed on 2s without over gearing
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