GP Gearing.

[TheMainInsane]

Hello,
I am having problems with gearing my Ground Pounder properly. I bought a mod 1 metal spur gear from CPE with 43 teeth and a mod 1 pinion with 13 teeth. After running the truck, I discovered it is seriously under geared (or over geared, I don't know which) when I smelled the motor burning. I found another metal spur gear that I think will work (Robinson Racing RRP1545), but it's 48 pitch. I couldn't make any 48p pinion under 25 teeth fit the stock spur gear, which was 48 pitch. I wanted to know if anybody had any suggestions of what to do. Thanks for any and all help, and sorry I post too much.

 

[Brian34]

Are you running the stock size tires ? If you are, then try a mod 1, Eleven tooth pinion with the 43 tooth mod 1 spur gear. Also, check the mesh between the pinion and spur gears. If the pinion gear's teeth are too far in to the spur's teeth, this will put added strain on the motor.

 

[CowBoyClod]

I've been thinking myself of where you can get a 12t pinion for the CPE metal spur. I would prefer a 12t being that I like to have things percise and exact.

 

[TheMainInsane]

Are you running the stock size tires ? If you are, then try a mod 1, Eleven tooth pinion with the 43 tooth mod 1 spur gear. Also, check the mesh between the pinion and spur gears. If the pinion gear's teeth are too far in to the spur's teeth, this will put added strain on the motor.

Yes, I am using the stock tires. I looked at the gears again and discovered that the teeth look like they mesh perfectly from the back of the truck, but from the side of it; not so much. Will a motor with a longer shaft help? Thanks again!

 

[Brian34]

Yes, I am using the stock tires. I looked at the gears again and discovered that the teeth look like they mesh perfectly from the back of the truck, but from the side of it; not so much. Will a motor with a longer shaft help? Thanks again!

Are you running the factory motor ? Maybe you can move the pinion gear out toward the end of the motor shaft a bit more. I've found that when the pinion and spur are fully aligned, the truck is faster.

 

[TheMainInsane]

Are you running the factory motor ? Maybe you can move the pinion gear out toward the end of the motor shaft a bit more. I've found that when the pinion and spur are fully aligned, the truck is faster.

I am trying to run aftermarket motors. I ended up burning one motor out. I also set up another one and discovered that it was worn out from previous use. What I did discover is that when I screwed the motor in place using the stock mounting system, the pinion gear would actually be lifted away from the spur so that the pinion gear is just above the spur without the teeth meshing. This caused many adjustments. Yes, I did remove the wrapping around the can with the name of the motor on it. Also, I couldn't have used the stock motor because the 48 pitch pinion on it wouldn't have meshed properly with CPE's Mod 1 spur gear. Thanks!