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  1. #1
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    2085x stopped working - now working again

    Not a huge fan of Traxxas' servos but for the X-MAXX I just wanted something plug and play and needed a stronger spring anyways. The 2085x seemed to fit the bill. After the second run the servo randomly stopped working. Turned the truck on and off and realized steering was browning out the electronics. I read this thread, https://forums.traxxas.com/showthread.php?9091662, and can confirm I'm having the same issue. The servo has some sort of self resettable fuse. I didn't test it intermittently to determine the exact time it took this fuse to reset but the next day all was well. Apparently adjusting the trim while TSM is on, even if by accident, is a big no-no.

    I disabled TSM from the Tx and am hoping for the best from here on out. I called Traxxas and they, in Traxxas fashion, denied there being anything wrong with said 2085x. I hate that they do this but understand why they do.

    Anyone else experience this issue? TSM isn't a must but would be nice to use.

  2. #2
    RC Qualifier Flux Capacitor's Avatar
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    Quote Originally Posted by MickVA View Post
    Anyone else experience this issue? TSM isn't a must but would be nice to use.

    There are actually a couple of members on here that say they got a couple of years out of the 2085X servo when TSM was not used at all; or I should say they chose not to use the TSM feature.

    I myself had no luck with the 2085X servo with or without TSM active. For two months I did the turn-around game with Traxxas and their servos for the X-Maxx starting with the standard 2085 that was in it and replacing with a 2085X that I had on stand-by. Long story short, four for four servos failed on me; two standard 2085's and two 2085X's.

    The standard 2085's would strip after two runs and the 2085X's would overheat on mine using the 6533 TSM receiver whether TSM was on or off causing them to become unresponsive and almost causing severe crashes until the fuse reset.

    Yes, TSM would be nice to use because that is how the truck is advertised. Unfortunately, I couldn't get the truck to perform as advertised with their servos and ended up dumping some good money on a ProModeler exclusively designed for the X-Maxx.

    I mean, I don't know what to say, I gave Traxxas servos a shot and they did provide and live up to their warranty service on electronics; however, I just couldn't get their servos to work in their truck as advertised.

    I also understand that when you called Traxxas that they denied that there was anything wrong with the 2085X and they would be partially correct because the servo works and starts working again when it cools down and resets. In my opinion, that is a faulty servo, regardless of the fact it starts working again when it cools down. I almost lost my investment twice because of their denial.

    However, what they won't admit, is when the servo becomes hot and the fuse trips and you almost wrap your $1000 investment around an immovable object because the steering went out without warning...........well, lets just say they aren't going to admit that can happen because then they would be obligated to replace more than a servo!
    Sent from my autonomous device.

  3. #3
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    Quote Originally Posted by Flux Capacitor View Post
    I couldn't get the truck to perform as advertised with their servos and ended up dumping some good money on a ProModeler exclusively designed for the X-Maxx.
    Saved for a rainy day, thanks.

  4. #4
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    Quote Originally Posted by Goaround28 View Post
    Saved for a rainy day, thanks.
    Yeah, the ProModeler servos are pretty awesome. I run the 930 in mine. It's a beast.

  5. #5
    RC Turnbuckle Jr. ReglarGuy's Avatar
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    https://youtu.be/LScM7fdIrqs

    Sure does look like western Pennsylvania. Pittsburgh area to be exact.
    Life's to short to be a sour puss.

  6. #6
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    I always go with TSM off, and my servo it's aftermarket.

  7. #7
    RC Qualifier Flux Capacitor's Avatar
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    Quote Originally Posted by Goaround28 View Post
    Saved for a rainy day, thanks.
    You are Welcome and keep in mind that the ProModeler will work on a rainy day, a snowy day, a sunny day, a windy day and a day of driving it partially submerged in water; but my very favorite aspect of it is that it will work on very hot days and any day that ends with a "Y" and not overheat!
    Sent from my autonomous device.

  8. #8
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    Turned TSM off completely in the menu, went to go run the truck. Lasted 10 minutes before failing again. What specific servo do you run from PM and what servo arm setup are you using? Thanks.

  9. #9
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    Quote Originally Posted by MickVA View Post
    Turned TSM off completely in the menu, went to go run the truck. Lasted 10 minutes before failing again. What specific servo do you run from PM and what servo arm setup are you using? Thanks.
    The 930 and 630 are both good in the X-Maxx. The 930 has more torque but the 630 has more than enough too. As for the horn, I used the Promodeler one.

    You can get the servo + beam mod + horn as a package:

    930 package

    630 Package

  10. #10
    RC Champion Acidic01's Avatar
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    Promolder servo spline is different size than the 2085. So have to use promodeler horn for find a xmaxx got. With a 5mm diameter spline.

    Sent from my Pixel 3 XL using Tapatalk

  11. #11
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    Quote Originally Posted by cgrant26 View Post
    The 930 and 630 are both good in the X-Maxx. The 930 has more torque but the 630 has more than enough too. As for the horn, I used the Promodeler one.

    You can get the servo + beam mod + horn as a package:

    930 package

    630 Package
    Wow, those look extremely nice. Question; will their horn work with with the stock 2085/x servo or is that specifically for your universal 25t servo? Because if it's for your universal 25t that come on most servos I would love to try it with my reefs 500 which does incredibly well in my "MAXX".

    Extremely interested in trying one out from that company as well though. Not sure why they only have one corner removed from the mounting tabs. It seems I've always had to modify the actual front portion of the chassis to make the tabs fit on both sides...

  12. #12
    RC Champion Acidic01's Avatar
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    Quote Originally Posted by MickVA View Post
    Wow, those look extremely nice. Question; will their horn work with with the stock 2085/x servo or is that specifically for your universal 25t servo? Because if it's for your universal 25t that come on most servos I would love to try it with my reefs 500 which does incredibly well in my "MAXX".

    Extremely interested in trying one out from that company as well though. Not sure why they only have one corner removed from the mounting tabs. It seems I've always had to modify the actual front portion of the chassis to make the tabs fit on both sides...
    The 2085/x has a 7mm spline so stock horn will not work on any other servos. You have to get the pm horn or one for xmaxx that works with 5mm splines.

    Or find some kind of adapter which I don't know if exists.

    For pm servos for xmaxx have to do the beam mod which cuts a corner off. Can do this yourself or let them do it. As you also have to have a adapter to use any non 2085/x servos and the beam mod is needed for most servos in order to fit correctly.

    There are a number of posts talking about this. Beam mod all depends on the servo and it's exact dimensions as all differ some.



    Sent from my Pixel 3 XL using Tapatalk

  13. #13
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    Quote Originally Posted by cgrant26 View Post
    The 930 and 630 are both good in the X-Maxx. The 930 has more torque but the 630 has more than enough too. As for the horn, I used the Promodeler one.

    You can get the servo + beam mod + horn as a package:

    930 package

    630 Package
    Thank you. I just ordered the 930. My castle setup 800kv and x8s esc should run it without a external bec.

  14. #14
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    Quote Originally Posted by Flux Capacitor View Post

    The standard 2085's would strip after two runs and the 2085X's would overheat on mine using the 6533 TSM receiver whether TSM was on or off causing them to become unresponsive and almost causing severe crashes until the fuse reset.
    I shot of a video of this happening consistently on my first 2085x before it failed on me. I could feel the heat of the servo on the base of the receiver box, which I knew couldnt be right

    https://youtu.be/E0tDHTbJhzk

  15. #15
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    Got an 8S Maxx when it first came out. I ran TSM on very low for a while but switched to a Futaba 3PV this year.

    My stock 2085 has worked fine. I broke a steering knuckle and found something skipped a couple teeth in the steering.

    I purchased the metal gear upgrade and got an aluminum steering arm. No problems since.

    I have never heard of a servo doing what you describe but replacing the stock servo does seem like a popular play.


    Sent from my iPhone using Tapatalk

  16. #16
    RC Qualifier Flux Capacitor's Avatar
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    Quote Originally Posted by varunaX View Post
    I shot of a video of this happening consistently on my first 2085x before it failed on me. I could feel the heat of the servo on the base of the receiver box, which I knew couldnt be right

    https://youtu.be/E0tDHTbJhzk
    Thank you for posting the video. I wanted so badly to post a full video of this very problem but was so frustrated and angry with what was happening with these servos that I gave up too soon.

    I could have made a ten minute video just like yours showing how the steering fades in and out like that just to prove that it consistently happens over and over.

    Although your video is short, I could see that is exactly what was happening with mine.
    Sent from my autonomous device.

  17. #17
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    Just got the new servo in from Traxxas through their awesome warranty process. Truly effortless. I believe my original servo may have just been defective off the rip. The new one is faster, stronger, and just overall more responsive. I'm not taking any chance with TSM as I don't need it but this servo appears to be in tip top shape. I'll report back later if anything changes.

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