traxxasbasher13
Newbie
Hey guys, I am building a truck over at rcshortcourse.com and I am using a Wraith Axle in My build and I need to know the gear ratio of the axle so I can figure out what motor to use. Can anyone help me out?
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Differential ratio?
- Thread starter traxxasbasher13
- Start date
sniper101
Rock Stacker
38/13 if I'm not mistaken. That's the factory, non-HD gear set though. Three different ratios in the HD set if I recall.
traxxasbasher13
Newbie
Thanks, just what I needed to know!
2500hdon37s
I wanna be Dave
I have the 13/38 HD set and you'll need the HD set if you're throwing any power to them!
My Wraith is going to be a crawler so I bought the HD 43T/13T what they call under drive!! I have 80T spur with 14T pinion on a Holmes Hobbies Torque Master Expert 35T motor. I think this will be a pretty decent setup. For now...hehehe. I am sure it will be an ongoing experiment! 
Hope this helps.
I guess you want speed though...oops..oh well maybe someone else will read and want a slower Wraith.
Hope this helps.
I guess you want speed though...oops..oh well maybe someone else will read and want a slower Wraith.
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Pabust
Quarry Creeper
Can you run different gear ratios front and rear? like 38/13 rear and 36/14 front? Can that be benefitial performance wise?
You can run those ratio's it will alow the front to spin a little faster. It will allow it to climb steep up hills with out the front wanting to come off the ground as easy. 13/43 rear and 14/36 front may be a little to much drive line bind at speed so I under drove my rear 13/43 and used 13/38 in front.
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Last edited:
My Wraith is going to be a crawler so I bought the HD 43T/13T what they call under drive!! I have 80T spur with 14T pinion on a Holmes Hobbies Torque Master Expert 35T motor. I think this will be a pretty decent setup. For now...hehehe. I am sure it will be an ongoing experiment!
Hope this helps.
I guess you want speed though...oops..oh well maybe someone else will read and want a slower Wraith.
wow how is your wheel speed? i run 43/13 axles and 14/80 pinion spur with a 13.5 brushless slower then stock but still good wheel speed.
Well it must be your brushless motor that makes it faster. I have a HH TorqueMaster Expert 35T and it is nice, I have no idea about stock speeds because this is a kit and I never had anything close to stock other than the spur gear.
