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Thread: 20/76 or 23/86

  1. #1
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    20/76 or 23/86

    Referring to the title which would you think have high top end and which one would have lower top end?

  2. #2
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    they are so close in final drive but the 23/86 will give you just a little less top speed. the 20/76 may not fit cause the gears are to small. i think when i had a 78 spur and 21 pinion it my pinion wasnt big enough to touch the spur

  3. #3
    RC Turnbuckle Jr. O.G.'s Avatar
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    Does traxxas make a 76t Spur? If not, who does?
    My Black & Blue Rally is faster than your color...

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    yes i belive they do
    90t,86t,83t,76t
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    RC Turnbuckle Jr. Petertje60's Avatar
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    Reod12x2 is right.
    #4676 is a 76T spur.
    Nobody is born with experience.

  6. #6
    RC Turnbuckle Jr. harry697's Avatar
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    Quote Originally Posted by NewGuy00 View Post
    Referring to the title which would you think have high top end and which one would have lower top end?
    The 23/86 should give you slightly more top speed.

    What vehicle are you running this gearing on?

  7. #7
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    xl-5 but I running my CC 3800kv 1410 series

  8. #8
    RC Turnbuckle Jr. rjm2519's Avatar
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    I don't think the 20t pinion will mesh with the 76t spur without making the slot in the tranny longer so the motor can get closer to the spur.

    I used to run 23/83 when I ran at the track with the vxl system, speed was mid thirties not terribly fast, but plenty of get up and go for a small space. That was on 2s btw, 3s add about 7-8 mph maybe a little more but not a lot of top end, but very hard to control. With the castle system you probably can adjust out a lot of the punch and tune the curve to make it easier to drive.
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