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  1. #1
    RC poster
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    Apr 2013
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    Unhappy Another day, another broken drive shaft..

    Hello,

    Yesterday I broke my outer drive shaft on my Summit VXL, easy fix but it cost me 12.00 for the part. Tonight, I broke my inside drive shaft. Any recommendations on an upgrade to eliminate these issues on my Summit without constantly replacing the plastic ones? I've been reading a lot of the MERV metal shafts, but I understand you need to change a couple of other components from a MERV. What's the easiest upgrade/fix?

    Thanks

  2. #2
    RC Qualifier
    Join Date
    Dec 2011
    Location
    Woodward, OK
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    430
    All you should need are the merv stock replacement shafts. Some have changed out the arms, and rockers, I did not have not had any problems running 2 2s lipos.
    T-maxx 3.3
    Rusty 2.5r
    Summit VXL
    Nitro 4-tec

  3. #3
    RC Turnbuckle Jr. Petertje60's Avatar
    Join Date
    Jan 2011
    Location
    Rotterdam, Netherlands
    Posts
    7,264
    I converted my Merv to a Summit. Got GPM Summit rockers and kept the RPM Merv arms and Traxxas CVDs. I had to file the front rockers and cut off a tiny bit of the front arms, but the CVDs work great.
    Since the angle of the rear drive shafts with the Summit arms is a bit larger, the CVDs might pop out more easy.
    Nobody is born with experience

  4. #4
    RC Enthusiast
    Join Date
    Feb 2013
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    32
    I feel your pain. I would HIGHLY suggest working with your slipper clutch. I thought mine was adjusted properly, but I was wrong. I recommend loosening the clutch to the point where the vehicle hesitates to move when given throttle, then tighten from there as necessary. I also have 4 MERV driveshafts and the MERV P2 rockers. Haven't broken a drive shaft in over a week. Good luck!

  5. #5
    RC Qualifier
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    May 2012
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    So Cal
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    547
    [QUOTE=AggieFCO;5483385] I would HIGHLY suggest working with your slipper clutch[QUOTE]

    I second that wise suggestion
    There are lots of ways to do that. Most are wrong.

  6. #6
    RC poster
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    Apr 2013
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    NorCal
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    I ended up putting the MERV 7151x steel drive shafts in with the P2 rockers. So far, so good. I also adjusted the slipper clutch.

  7. #7
    RC Champion
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    Jan 2013
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    SE Texas
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    I'm a firm believer of sticking with the plastic axles over the metal ones.
    They are cheaper...and easy to replace.
    Remember that you always have to have a weak point. I'd just as soon have the weak point be something that's easy to replace.
    --
    "Dude,I almost had you"
    R.I.P Paul Walker

  8. #8
    RC Qualifier
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    Nov 2012
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    383
    for the slipper clutch, is there an easy way to adjust it without taking the transmission or motor out? it doesnt look like the wheel wrench is getting on that nut. Do you use an open end wrench?

  9. #9
    RC Champion
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    Jan 2013
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    1,178
    I have a socket with a flexible shaft extension for a multi screw driver that works great.
    --
    "Dude,I almost had you"
    R.I.P Paul Walker

  10. #10
    RC Qualifier
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    May 2012
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    So Cal
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    547
    Quote Originally Posted by robl45 View Post
    for the slipper clutch, is there an easy way to adjust it without taking the transmission or motor out? it doesnt look like the wheel wrench is getting on that nut. Do you use an open end wrench?
    Depends on your gearing (which determines how much room you have)
    There are lots of ways to do that. Most are wrong.

  11. #11
    RC Enthusiast
    Join Date
    Feb 2013
    Posts
    32
    I used an allen wrench to turn the front portion while holding the nut with a pair of pliers. I had to take the receiver box off though.

  12. #12
    RC poster
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    Apr 2013
    Location
    NorCal
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    7
    It's simple to take the motor, ESC and receiver box off, took me 5 minutes. I recommend taking all these components off to adjust the SC and give your truck a good cleaning.

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