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  1. #1
    RC Champion
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    Second run with my Brushless Summit that happened

    Second run with my Brushless Summit that happened:


  2. #2
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    Already replaced that half shaft since my LHS got those in stock. NICE!!!

    I really don't know how this could happen. I thought those were pretty strong but they are not. I did some regular bashing on grass with my Trencher X Tires.

    Maybe litte bit too much traction?

    So should I set the slipper more loose?

  3. #3
    RC Turnbuckle Jr. JimmyNeutron's Avatar
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    Loosen the slipper... I twisted out shafts like that running a DeWALT until the slipper was loosened enough.

    Also, you can drill the shaft end at 90 to the stock location and reuse the shaft until it breaks again.
    Whatever it is I just typed... could be wrong.

  4. #4
    Traxxas Employee TireSlinger's Avatar
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    Correct slipper adjustment and throttle management are critical with high power brushless setups. The faster you grab the trigger the more stress is put on the parts.

    Also, grass is actually a really high traction surface which does not allow any give since the tires grip right away. A lot of people don't realize that.

  5. #5
    RC Competitor
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    I run the Hobbywing 1800kv on 4s and installed the Robinson Steel slipper clutch and spur gear. On brushless setups do you tighten the nut all the way and so about 1 eight of a turn off ? Thx

  6. #6
    Marshal ksb51rl's Avatar
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    Quote Originally Posted by soundmaster View Post
    Already replaced that half shaft since my LHS got those in stock. NICE!!!

    I really don't know how this could happen. I thought those were pretty strong but they are not. I did some regular bashing on grass with my Trencher X Tires.

    Maybe litte bit too much traction?

    So should I set the slipper more loose?
    Yes, they are, but they are not unbreakable.
    Alt-248 on the number pad =

  7. #7
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    Thanks guys - maybe just bad luck. So what is a good slipper setting for my brushless Summit - 1/2 Turn?

    Thanks Jimmie for that good advice. I already bought a new half shaft since my LHS got them in stock

  8. #8
    RC Enthusiast
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    it all depends on your set up. stock you should set it tight enough that you can its hard to turn by hand. there isnt really a spec because spring rates can very slightly and power/torque from the motor will also very. more power means it will slip more jus gotta play with it to find that sweet spot. sorry cant be more help. jus remember too tight=broken parts but too loose=melted parts

  9. #9
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    I bought mine used with the rear diff clicking... so after the rebuilt I took it for a long testing...

    I set the slipper very lose, because brushless is HUGE difference between the titan 775...
    I have 12 hrs run time, brushless like 8 hrs and the rest with the titan 775... so far great!

    Now ready to install the mamba max pro and sensored Tekin t8 2050kv

  10. #10
    RC Champion
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    Quote Originally Posted by Pellogt View Post
    I bought mine used with the rear diff clicking... so after the rebuilt I took it for a long testing...

    I set the slipper very lose, because brushless is HUGE difference between the titan 775...
    I have 12 hrs run time, brushless like 8 hrs and the rest with the titan 775... so far great!

    Now ready to install the mamba max pro and sensored Tekin t8 2050kv
    so how did you set your slipper?

    1/2 turn to 1 turn??

  11. #11
    RC Competitor
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    Quote Originally Posted by soundmaster View Post
    so how did you set your slipper?

    1/2 turn to 1 turn??
    mmm I don't know... lol
    Very lose, I mean you can't even do wheelies... for me I think works good (I don;t like wheelies)

  12. #12
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    I also don't like wheelies but i also don't like a melted Spur Gear

    So I have to find a setting in between.

  13. #13
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    Quote Originally Posted by soundmaster View Post
    I also don't like wheelies but i also don't like a melted Spur Gear

    So I have to find a setting in between.
    Right!! I'll make a video.

  14. #14
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    Quote Originally Posted by Pellogt View Post
    Right!! I'll make a video.
    Yeah nice!!!!!!!!!!

  15. #15
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    Today I was using a 11T pinion and Slipper 1/2 turn setting. Seems to be a good slipper setting - at least nothing broke, but 11T is a to slow. I will buy a 12 and 13T and test those. I ran 14T before but it is a little to fast so 12 or 13 should be fine.

  16. #16
    RC Racer
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    Also set your pushrods on the middle setting and replace your axle boots when they tear to keep your shafts from jamming in one another, stress is added to the axle pin holes when they jam. I currently have my slipper set to where it will squeal but sometimes pull a slow wheelie from a hard launch. 2100KV 14/62 Big Joes on Axial 8 spoke beadlocks.
    Brushless 19/62 SPC 8.2 It's not a Tekin or a MM

  17. #17
    RC Champion
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    I got a pretty nice setup now:

    Gearing: 13/68
    Motor: 2400KV
    Slipper 1/2 turn
    Tires: Proline Trencher X

    No problems with the Drive Shafts anymore.


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