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  1. #401
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    A big thanks to MaxxPain for the awesome stand!


  2. #402
    RC Racer MaxxPain's Avatar
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    Right on, You are welcome. Looks good. I left mine at work and every time someone comes walking in, they forget whatever is coming out of there mouth and gravitate to the UDR.

    Xmaxx, Rally, Slash 4X4, Summit 1/16

  3. #403
    RC Racer
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    I ran on 4s today …. 2 packs …. its fun on 4s but it needs 6s to get it moving fast enough to excite !!!!
    Xmaxx , XO - 1 , Slayer Pro , UDR , E-Revo

  4. #404
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    Hi. It feels great to be on a forum again, I hate Facebook. Today I made some smoke. Help me if you can, please.

    Installing OBA system, for power I pushed out the pins for the connector farthest forward and solder the wires of a JST connector to the Traxxas connector pins. The red wire goes to the esc the black wire jumps to the other connector. I run 2 2S batteries for 4S. Everything looked good, I plugged in the JST to the OBA system and smoke started to rise. I freaked but got it all shut off and disconnected. I was crushed. I worked different things on the rig until 6am last night, slept a bit, the got working on it again. The OBA was the last thing I needed to finish, I was super happy, and then just devastated. The black wire going from my esc to the OBA box was melted badly. Not sure if the OBA is toast.

    So what did I do wrong? I'm guessing the wires on the ESC side of the connector was a bad idea?
    Last edited by JustAdam; 03-17-2019 at 03:05 AM.

  5. #405
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  6. #406
    RC Qualifier
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    Quote Originally Posted by JustAdam View Post
    Hi. It feels great to be on a forum again, I hate Facebook. Today I made some smoke. Help me if you can, please.

    Installing OBA system, for power I pushed out the pins for the connector farthest forward and solder the wires of a JST connector to the Traxxas connector pins. The red wire goes to the esc the black wire jumps to the other connector. I run 2 2S batteries for 4S. Everything looked good, I plugged in the JST to the OBA system and smoke started to rise. I freaked but got it all shut off and disconnected. I was crushed. I worked different things on the rig until 6am last night, slept a bit, the got working on it again. The OBA was the last thing I needed to finish, I was super happy, and then just devastated. The black wire going from my esc to the OBA box was melted badly. Not sure if the OBA is toast.

    So what did I do wrong? I'm guessing the wires on the ESC side of the connector was a bad idea?
    direct short = melted wires

    test positive / negative with multi tester
    fabricator

  7. #407
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    Quote Originally Posted by CrazyXMAXX View Post
    direct short = melted wires

    test positive / negative with multi tester
    I will check them. The ESC was turned on when I made the connection, not sure if that was a factor. So if there is a short, how do I find it? I just don't get why it happened.

    I guess I can't post pics. Please see the link.
    http://imgur.com/gallery/37YOZod
    Last edited by JustAdam; 03-17-2019 at 07:11 PM.

  8. #408
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    Could I just run the OBA of a 9 volt battery or other nimh. I was trying to run it off the vehicle batteries to keep it simple, I tested it with a small 3s, but I didn't want to have an extra lipo on the truck that could get damaged and catch fire.
    Last edited by JustAdam; 03-17-2019 at 07:30 PM.

  9. #409
    RC Champion akrimmel's Avatar
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    FINALLY got the FOX UDR today and opened it at the track and bashed it out of the box 3s Maxx Amps 6500mah 150C discharge. Very nose heavy over jumps, will start with removing the spares. Also 80wt, 60wt which oil should go where,all advice welcome.
    U.D.R. IN FULL MOD MODE
    MMX SUMMIT 2200KV!

  10. #410
    RC Competitor
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    Today I will be fitting this bad boy


  11. #411
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    Nov 2016
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    Everybody high from Russia! I am the owner of UDR too. I have installed GPM Aluminum Motor Heat Sink With Cooling Fan. But it doesn't suit good with the rear driveshaft. Don't make my mistakes. I am not permitted to post pictures. Here is the link to the picture http://forum.rcdesign.ru/attachment....9&d=1552383450

  12. #412
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    Quote Originally Posted by hypnotic View Post
    Everybody high from Russia! I am the owner of UDR too. I have installed GPM Aluminum Motor Heat Sink With Cooling Fan. But it doesn't suit good with the rear driveshaft. Don't make my mistakes. I am not permitted to post pictures. Here is the link to the picture http://forum.rcdesign.ru/attachment....9&d=1552383450
    Someone on FB group said the same, the Hot Racing version looks like it will fit without rubbing

  13. #413
    RC Champion fourdub's Avatar
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    Colton, Inland Empire, Southern California
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    Losi sbr and traxxas udr
    Sla2hvxl,pe4evxl,erevobl
    "Richard Chilson"youtube

  14. #414
    RC Champion fourdub's Avatar
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    forgot to remove the v off the other picture.

    Sla2hvxl,pe4evxl,erevobl
    "Richard Chilson"youtube

  15. #415
    RC Champion akrimmel's Avatar
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    Pics dont do it justice, but when the wheel comes off and flies past your truck due to a lost wheel nut when you dont have replacements plus a limiting strap bolt backed out as well and your using a 4s 9000mah for the first time and after 20 minutes the following happened

    So you go home from the park because you didn't bring the tool box, way to go.
    U.D.R. IN FULL MOD MODE
    MMX SUMMIT 2200KV!

  16. #416
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    I have the same gpm cooler. Does it rub the driveshaft or not on your UDR?

  17. #417
    RC Champion akrimmel's Avatar
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    Yep, but I'm going to leave the endbell on and take off the fan and the fan cover. Once it gets warmer I will put the fan back on without the fan cover and it will prevent aluminum on aluminum contact. You will have to install to see what i am referring too. I will do the same today or tomorrow and post pics again.
    U.D.R. IN FULL MOD MODE
    MMX SUMMIT 2200KV!

  18. #418
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    Sand racing. UDR is 4s, paddles. Associated Team is 6s.
    Last edited by hypnotic; 04-01-2019 at 01:21 PM.

  19. #419
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    Quote Originally Posted by akrimmel View Post
    I will put the fan back on without the fan cover.
    I want to do the same. My gpm fan is connected with separate 12v bec. I have purchased another fan which is installed from the side of motor without cutting any holes. It will be powered from another bec. I have installed two becs, 7.4v for servo and cooling fan, 12v for another fan.

  20. #420
    RC Champion akrimmel's Avatar
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    Quote Originally Posted by hypnotic View Post
    I have installed two becs, 7.4v for servo and cooling fan, 12v for another fan.
    Do you have any pics of the above
    U.D.R. IN FULL MOD MODE
    MMX SUMMIT 2200KV!

  21. #421
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    Quote Originally Posted by akrimmel View Post
    Do you have any pics of the above
    Next time when I repair my UDR I will make some more pictures. I have posted some pictures in Servo thread.

  22. #422
    RC Champion akrimmel's Avatar
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    Sounds good, thanks.
    U.D.R. IN FULL MOD MODE
    MMX SUMMIT 2200KV!

  23. #423
    RC Champion akrimmel's Avatar
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    Got these sick shocks


    Installed on my dirty truck

    U.D.R. IN FULL MOD MODE
    MMX SUMMIT 2200KV!

  24. #424
    RC Champion akrimmel's Avatar
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    Quote Originally Posted by akrimmel View Post
    Yep, but I'm going to leave the endbell on and take off the fan and the fan cover. Once it gets warmer I will put the fan back on without the fan cover and it will prevent aluminum on aluminum contact. You will have to install to see what i am referring too. I will do the same today or tomorrow and post pics again.
    U.D.R. IN FULL MOD MODE
    MMX SUMMIT 2200KV!

  25. #425
    RC Champion akrimmel's Avatar
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    Aluminum steering servo, front axle carriers and rear axle C hubs, no part numbers for the steering servo or the rear axle C hubs.

    Metal front chassis protector

    A better shot of them

    Hardened front and rear driveshafts, new wheel nuts, and some NOS tanks.

    New front bumper

    Rear bumper with a slight wheelie bar

    Aluminum toe links, not sure where these are yet

    Some decals for the rebound shocks

    Antennas from RC MART, one at a time.
    U.D.R. IN FULL MOD MODE
    MMX SUMMIT 2200KV!

  26. #426
    RC Champion akrimmel's Avatar
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    New front axle carriers, I do have anodized calipers on the way

    Installed on both sides

    U.D.R. IN FULL MOD MODE
    MMX SUMMIT 2200KV!

  27. #427
    RC Champion akrimmel's Avatar
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    The rear axle C hubs as well

    U.D.R. IN FULL MOD MODE
    MMX SUMMIT 2200KV!

  28. #428
    RC Racer
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    Those parts look awesome!

  29. #429
    RC Racer
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    hypnotic, nice vid. UDR for the comeback win!

  30. #430
    RC Champion akrimmel's Avatar
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    Quote Originally Posted by ben1272 View Post
    Those parts look awesome!
    Thanks,, The shocks have been the best addition so far, truck is more stout less sway when turning.
    U.D.R. IN FULL MOD MODE
    MMX SUMMIT 2200KV!

  31. #431
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    QUESTION,
    DROVE TODAY WITH THE 4S LIPO THINK ITS SLOW COMPARE TO THE 6S
    Gearing is still stock can anybody advise me what’s the best overall gearing for it with 4S?

    Thanks

  32. #432
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    Twin Cooling Fan

  33. #433
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    cooling fan and driveshaft

  34. #434
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    Pictures of the becs

  35. #435
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    Cooling fan with cut corner.

  36. #436
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    Side fan doesn't suit without this mod.

  37. #437
    RC Champion akrimmel's Avatar
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    I only had to shave a 1/4th of what you did, have pics just haven't posted.
    U.D.R. IN FULL MOD MODE
    MMX SUMMIT 2200KV!

  38. #438
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    A little bit of bashing after refilling the shocks.

  39. #439
    RC Champion akrimmel's Avatar
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    Quote Originally Posted by hypnotic View Post

    A little bit of bashing after refilling the shocks.

    What shock oil weights do you prefer? I run 80wt in the rebounds and 60wt in the shocks.
    U.D.R. IN FULL MOD MODE
    MMX SUMMIT 2200KV!

  40. #440
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    Nov 2016
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    30 front, 60 rear

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