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  1. #1
    RC Racer
    Join Date
    Oct 2012
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    232

    Does anyone have the gear ratios for the brushless transmission and diffs?

    Curious... I am trying to calculate the speed with the parts I ordered. The truck is stock with a 26T pinion and Imex claw dawgs. Using the speed calculator, I estimated them to be similar in diameter as the traxxas old maxx tires.


    http://scriptasylum.com/rc_speed/top_speed.html
    Last edited by Brokenparts; 10-21-2012 at 09:59 PM.

  2. #2
    RC Enthusiast
    Join Date
    Sep 2012
    Location
    tulsa ok
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    47
    Overall Drive Ratio:

    *

    20.88 (stock, out-of-box)don't know if this was what your looking for but it's what the spec sheet shows
    drive it like you own it,full throttle

  3. #3
    RC Racer
    Join Date
    Oct 2012
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    232
    20.88 turns of the motor for one turn of the wheel?

  4. #4
    RC Enthusiast
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    Sep 2012
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    tulsa ok
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    47
    Quote Originally Posted by Brokenparts View Post
    20.88 turns of the motor for one turn of the wheel?
    my reply was based on the spec sheet under products for the e-maxx brushless I'm not sure of revolutions of motor vs.wheel so now I'm interested in knowing the formula.
    drive it like you own it,full throttle

  5. #5
    RC Racer
    Join Date
    Oct 2012
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    232
    Looks like the roll out includes the spur/pinion combo and tire diameter. Im not sure how tire diameter changes roll out but it does O.o

  6. #6
    RC Racer
    Join Date
    Oct 2012
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    232
    Okay, I see. Roll out is the amount of turns the motor has to complete to move the tire one inch, so tire diameter would definitely affect that!

    Entering the claw dawg diameter and not including tire growth, my truck is geared for ~32mph on a fresh lipo charge. I think that may be a little on the slow side for this motor. Should I order a bigger pinion?

    38mph with 1/2" in tire growth
    Last edited by Brokenparts; 10-22-2012 at 07:01 PM.

  7. #7
    RC Turnbuckle Jr. Wildman4910's Avatar
    Join Date
    Jun 2009
    Location
    Cocoa Florida
    Posts
    4,497
    Diff ratio is 2.85:1
    Look out for the tree/crunch!

    LiPo? Naw NITRO!!

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