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  1. #1
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    Open differential question

    Wondering how many have changed the differential to the open mod, I've only seen some on YouTube but they don't test it very much. Wondering if any one would have feedback pro's/con's.

    Thank you

  2. #2
    RC Champion RCWilly's Avatar
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    Traxxas has the rear diff for the UDR, so no mod is needed to make the rear open (I'm pretty sure the videos were made before the full rear differential was released):

    https://traxxas.com/products/parts/8576
    Everyday's a gift, thus now is called the present.

  3. #3
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    RCWilly,

    I new to this so bear with me, will this diff rear that you linked reduce the roll overs, I was trying to read up on it to help reduce rollovers.

    Thanks for your time

  4. #4
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    Rc Wiley, Mod means modification

    I have not trued the diff mod but Iíll bet it will make it handle great.
    Last edited by Ikemort; 02-22-2021 at 03:18 PM.

  5. #5
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    Sorry guys for the questions, will the rear diff that RCWilly linked too act as an open diff like the videos?

    This is what I'm trying to achieve

    https://www.youtube.com/watch?v=3yNuJnXarWY

  6. #6
    RC Champion RCWilly's Avatar
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    Quote Originally Posted by firemedicUSAR View Post
    RCWilly,

    I new to this so bear with me, will this diff rear that you linked reduce the roll overs, I was trying to read up on it to help reduce rollovers.

    Thanks for your time
    I haven't installed it on mines, but the rear differential will definitely help reduce rollovers when turning.
    Everyday's a gift, thus now is called the present.

  7. #7
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    RCWilly,

    Thank you for your help, have you added different sway bars or adjusted the shock oil weight?

  8. #8
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    I have 70 weight shock oil in the rear and 40 in the front and no sway bars and mine handles fine. And it is a cheap mod

  9. #9
    RC Champion RCWilly's Avatar
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    Quote Originally Posted by firemedicUSAR View Post
    RCWilly,

    Thank you for your help, have you added different sway bars or adjusted the shock oil weight?
    I did not adjust the sway bars or shock oil, since I liked how it handles stock, but thicker shock oil and stiffer springs will help make it more stable at higher speeds (too thick could be detrimental as well, so find a happy medium for your setup).
    Everyday's a gift, thus now is called the present.

  10. #10
    RC Racer
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    Apr 2018
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    The open diff helps the truck from rolling over as much. More so if you're on pavement or hard packed ground. I think it's worth it.

    I recently swapped the front sway bar as I was running in sand more often, and I will say that made it much more sketchy on pavement. In the soft it helps to rotate the truck, but on pavement it's much more difficult to keep it straight.

    I'd pass on the sway bar and go for the diff.

  11. #11
    RC Racer
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    I switched to the open diff...and its so easy...and its awesome....drifts....powerslides.....drives awesome...you won't regret doing it....easy to do.

  12. #12
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    Unfortunately the area I live I mostly run on street, yards and football fields. I'm gonna switch to the open diff, do you guys have any recommendations on grease?


    Thank you to all that replied, I truly appreciate it!

  13. #13
    RC Champion RCWilly's Avatar
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    I think the differential comes filled with silicone fluid, not completely sure about the viscocity. For the other gears, I use marine grease:

    https://www.amainhobbies.com/maxima-...-80916/p548109
    Everyday's a gift, thus now is called the present.

  14. #14
    RC Competitor
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    I use marine grease for everything including differentials

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