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  1. #1
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    Revo stub axle mod to eliminate wobbling (pictures)

    As you all know the new Revo and T-Maxx with 17mm hex do get some wobble on the wheels after some time.
    English isn't my native language so I'm not sure it's called wobble. Please correct me if I'm wrong.
    I had the same wobble and it got to me. First I didn't care but after a while it got worse.
    I started to think about a solution and came up with this.
    The text under every picture explains more (click image for high res).



    This is what you start with. All stock axle and hex.
    You can even see the marks inside the hex from the threads from the axle.
    They are NOT supposed to be there and makes the wobble worse.



    And this is how it looks on the car before modding it.
    There is a little play between the axle and the hex making the wheel wobble.



    This is what I have made.
    It's a piece of pipe (metal) that I have threaded inside
    and the grinded down to 6 mm outer diameter.



    These are the different pieces I have used.
    All stock parts except the pipe with threads.



    Another angle of the same pieces
    Here you see that I have drilled the hex with a 6 mm drill
    so it will fit over the new larger end on the axle.
    It is VERY important to drill the hole FIRST and then grind the pipe
    Try it on and grind more if it doesn't fit.



    Either use a large plier or some loctite to make the pipe stay on the axle.
    You wouldn't want to lose it in a pile of sand somewhere.



    This is the final product and how it looks.
    The point is to make you sweat when you put the hexes on.
    Twist and push and use some lubrication.
    The harder it is to get it on the better the fit is.


    I hope this can inspire some of you to do the same. It really works beyond what i imagined.
    There is absolutely no play between the axle and the hex anymore.
    http://www.youtube.com/user/Klimpen717

  2. #2
    RC Turnbuckle Jr. fallonguy's Avatar
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    Now that looks like a great idea you should make a lot more and sell them on e-bay. I would like to have a set or 2 for my revo
    I wanted to put a really cool signature but I ran

  3. #3
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    nice! work .................
    RC RUNS IN MY BLOOD!

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  4. #4
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    Now that is what Traxxas shouldve done in the first place!!!! Excellent work!!!

  5. #5
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    Count me in for a set of (4). Great idea!!!

  6. #6
    RC Turnbuckle Jr.
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    Awesome! I was just thinking about this the other day. I want a set!
    RIP Bart Hinson
    1992-2009

  7. #7
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    wow, i just looked at my revo. i never realized that the hexes are the cause of the wheel wobble! great job!! sell those bad boys!! i wish i had tools to do this myself, but i dont I would be interested! (at a reasonable price )
    I am RTR! 2.5 Revo .18TM/loaded...

  8. #8
    RC Racer
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    wow i would by a set if a had a new revo lol

  9. #9
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    Last edited by ukrsonic; 08-17-2009 at 09:24 PM.
    Batteries are for girls :)

  10. #10
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    What about M2C Racing machined aluminum 17mm hex hub adapters?
    Batteries are for girls :)

  11. #11
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    Quote Originally Posted by ukrsonic
    What about M2C Racing machined aluminum 17mm hex hub adapters?
    I believe this fix was meant for those that DON`T have the M2Cīs
    My "Tube" -> http://www.youtube.com/user/InFlejms

  12. #12
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    I will also take a set of 8 for both of mine if you decide to make some.

  13. #13
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    hey ukrsonic, what is that piece you started out from? your method looks like i could do it. did yours fit nicely?
    I am RTR! 2.5 Revo .18TM/loaded...

  14. #14
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    Looks like a brass insert. Or maybe it's a brass insert.
    Last edited by mistercrash; 08-18-2009 at 09:45 AM.
    It's been fun. See ya.

  15. #15
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    Yes its a brass insert, and it works just great! One of my friends did that mod with his Revo a long time ago, that his photos not mine I just did the same thing with mine
    Last edited by ukrsonic; 08-18-2009 at 09:57 AM.
    Batteries are for girls :)

  16. #16
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    sweet. thanks guys. do u know the specifics on the insert so i could just run to the store and try this out?
    I am RTR! 2.5 Revo .18TM/loaded...

  17. #17
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    I did the search and I posted two places to get them, all you have to do is click the links to get all the info you need about those inserts.
    It's been fun. See ya.

  18. #18
    RC Turnbuckle Jr. ajb1205's Avatar
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    I have a box of inserts on order (I work for an Oilfield supply company so I can get almost anything for really cheap). Thanks for the info and ideas guys.
    Vantage/MMM/1515 Revo
    MMM/1518 Revo
    T-Maxx 3.3

  19. #19
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    You are not going to find them at your local hardware store. I would order them from McMaster Carr(Mistercrash's link).
    Believe 1/2 of what you see,and 0 of what you hear

  20. #20
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    i read on another post that teflon tape does the job too so im giving it a shot since i already have some lying around. im predicting that it wont last nearly as long, but hey just givin it a shot.
    I am RTR! 2.5 Revo .18TM/loaded...

  21. #21
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    Quote Originally Posted by ukrsonic
    What about M2C Racing machined aluminum 17mm hex hub adapters?
    That's the best setup that money can buy, but you need RD Racing carriers and 8mm stub axles to work with those adapters. It will end up costing over $150 for the parts. I like your idea of using an insert, I will be doing the same to mine now.
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    / //_ /_ /_/

  22. #22
    RC Turnbuckle Jr. ajb1205's Avatar
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    My brass inserts showed up today (all 100 of them...minimum order ). Looks like I might have to do a few extra sets if I can get them to work the way I want them to.
    Vantage/MMM/1515 Revo
    MMM/1518 Revo
    T-Maxx 3.3

  23. #23
    RC Turnbuckle Jr. KyLeader7's Avatar
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    Quote Originally Posted by mistercrash
    I did the search and I posted two places to get them, all you have to do is click the links to get all the info you need about those inserts.

    I'm surprised you arn't taking any credit for this mod. Wasn't it you that has that photobucket account how-to for this mod??
    Learn by doing

  24. #24
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    Yes. I did the mod a looooooong time ago. But it was done differently than what Klimpen717 did.
    It's been fun. See ya.

  25. #25
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    Thanks for the pics and great solution to an annoying problem ukrsonic. I just did the mod last night, and it seems to be a solid fix.







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  26. #26
    RC Turnbuckle Jr. KyLeader7's Avatar
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    Atomic, where did you buy those inserts?
    Learn by doing

  27. #27
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    I found some at mcmaster carr.

    http://www.mcmaster.com/#94510a045/=3a7yj7

  28. #28
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    Quote Originally Posted by KyLeader7
    Atomic, where did you buy those inserts?
    I ordered them from drillspot.com.

    http://www.drillspot.com/products/35...d_Press_Insert
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    / //_ /_ /_/

  29. #29
    Marshal carraig042's Avatar
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    This mod looks great. I most definitely need to do this one!

    -Brett
    4wd Sportmaxx 3.3
    E-Revo - Mamba Monster - Neu 4s

  30. #30
    RC Turnbuckle Jr. KyLeader7's Avatar
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    Once i notice any wobble ill defentaly do this. yet ive been running a year strong with the ofna's without wobble..
    Learn by doing

  31. #31
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    where do you get a 6mm drillbit??

  32. #32
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    Quote Originally Posted by cyber_06_wolf
    where do you get a 6mm drillbit??

    lol home depot or any hardwear store
    mohawk indian r/c`er
    :P

  33. #33
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    i actually found out a 6mm drillbit is .236 inches, where a 15/64 drill bit is .234 inches. I believe ill try that.... ive never seen a metric drillbit.....but im not in that business or in one that regularly uses drills...so idk. you think homedepot or lowes would sell them individually?

  34. #34
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    Hey Atomicpunk How much material did you have to remove from the insert so the hex would fit over it?
    Drive it, Break it, Upgrade it

  35. #35
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    Quote Originally Posted by jcjhl69
    Hey Atomicpunk How much material did you have to remove from the insert so the hex would fit over it?
    I just measured the stub axle with calipers and milled the insert down to that measurement. I don't remember what it is , but I will measure it again and post. You can also use the outer carrier bearing as a guide, just mill it down until the bearing slips over the insert snugly.
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  36. #36
    Marshal carraig042's Avatar
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    I did it!

    Hey Atomicpunk How much material did you have to remove from the insert so the hex would fit over it?
    The thickness is about 6.04 mm.

    I just did mine, and I think it came out great! It was not hard work especially with a cheapo digital caliper. I recommend this to anyone who does not like the slop from the aluminum hubs.

    Here shows a comparison of what each should look like before and after, just like the others showed.


    Brass insert installed with loc-tite.


    Final product.


    Sorry for the not so great photos as they are taken from my phone.

    -Brett
    4wd Sportmaxx 3.3
    E-Revo - Mamba Monster - Neu 4s

  37. #37
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    This is a great thread to have in your subscrition list!
    JESUS says: "Fix it B4 it Breaks!"

  38. #38
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    thanks alot guy's i never realized how much my wheels wobble until i see this ,i am going to order some brass inserts too. thanks for the link

  39. #39
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    ok i know now its not just me having this issue .so fired up the lathe and spun some stainless steel ones and very pleased how much of a difference it made thanx for the ideas gentlemen .Party on Wayne.
    i see the world as driving terrain

  40. #40
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    I'm a little late for the party, but I too am tired of the wobble in my rear end... ...

    Anyways, I, just tonight, found that the 2ba size soft tip throwing darts will thread on perfectly to tha axles..

    I have quite a few sets of the cheaper brass darts laying around, and tomorrow I'm gonna' give this a go..

    Hopefully this will fix my wobbly rear end.....
    (√) Zer0 tall-er-ance 4 stu-pid-it-deeeeee.

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