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  1. #1
    RC poster
    Join Date
    Dec 2014
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    10

    Just bought a new brushless emaxx!!!

    I just picked up a new brushless emaxx to add to my fleet, so far im loving it. The only thing that bugs me is all the posts I see with people having trouble with their diffs. I plan on only running 4s on this truck, its plenty for me. Are the diffs still going to be an issue if im sticking to 4s and light bashing?

  2. #2
    RC Champion NFS's Avatar
    Join Date
    Aug 2013
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    2,097
    If you don't shimm the diffs most likely yeah.

  3. #3
    RC Qualifier ausprime's Avatar
    Join Date
    Dec 2011
    Location
    Cairns, Australia
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    776
    It all depends on the way to bash your truck.
    The main 3 reasons why the diffs fail are...
    1# 1/10 scale diff, in a 1/8 scale truck.
    2# doing a standing backflip on tarmac.
    3# holding the trigger down, while landing a big jump.
    NFS shared this picture in another post. Its shows you where to shim your diffs.
    My RC Cycle:
    Build it, Drive it, Brake it.

  4. #4
    RC Champion
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    Feb 2013
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    Parker, CO
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    1,390
    Those tiny little 6x12 pinion bearings are a considerable weak link in the diff design, with the 4 spider diff being second. Almost all 1/8 scale diffs use 8x16 bearings and a minimum of 6 spiders. Shimming helps but won't cure the problem. FLM hybrid bulks with ofna hyper 7 tq diffs or LST2 diffs installed into the stock or rpm bulks will make it a permanent fix.
    I have an RC problem...

  5. #5
    RC Qualifier
    Join Date
    Apr 2013
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    IL
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    327
    absolutely shim the diffs. these guys gave a lot of really good advice on all things maxx. check out my thread.


    https://traxxas.com/forums/showthrea...-still-plug-on

    i started with old stuff, but basically ended up with a new one. this even shows where to get the shims.

  6. #6
    RC poster
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    Dec 2014
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    10
    Thanks for all the help!

  7. #7
    RC Competitor
    Join Date
    Feb 2015
    Posts
    82
    Personally, I would just enjoy the truck and let the diffs fail. When you rebuild them, you can shim them. The stock replacement parts to rebuild the diffs are not that much and the diffs may last longer than you expect. Also, adding some punch control to the ESC may prolong the life of the diffs.
    Proud member of the red card club.

  8. #8
    RC poster
    Join Date
    Dec 2014
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    10
    Does anyone know if these aluminum diff covers would help durability even more with stock shimmed diffs? http://www.ebay.com/itm/INTEGY-SILVE...item43dcbefc46

  9. #9
    RC Competitor
    Join Date
    Feb 2015
    Posts
    82
    Those cases are for the 3906 e-maxx. For the newest e-maxx you will want T4092SILVER
    http://www.integy.com/st_prod.html?p...w#.VV5YuUZXrX4
    http://www3.towerhobbies.com/cgi-bin/wti0001p?&I=LXBNJG

    There is a great deal of talk about the quality (or lack thereof) of Integy parts, but considering the role of the gearbox it is likely better than the stock plastic part and not likely to be as vulnerable as other parts.
    Last edited by grumpy42; 05-21-2015 at 05:38 PM.
    Proud member of the red card club.

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