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rtenzo02 rtenzo02 is offline

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Showing Visitor Messages 1 to 6 of 6
  1. CamLS
    11-03-2015 09:55 PM - permalink
    Yes, the 21.5 turn spec motor that is currently pending roar approval, unless it was recently approved and I wasn't aware of it.
  2. Butler02
    04-07-2014 09:21 AM - permalink
    No i haven't had any issues with this on any of my spec R cars. I have three.
    The belt should only be a few millimeters above the top deck near the spur gear pulleys. If the belt is going to rub anywhere on the top deck, it's going to be closer to the front near where the belt tensioner is mounted. Even then, it's only going to rub if the belt is a little too loose and you're running higher power motors that will cause the belt to deflect more than normal.
    If your belt is tightened appropriately, you should be fine.
    The common place for belt rub is on the lower chassis at the front cutout for the front spool/diff.
  3. Robbob
    03-29-2014 04:44 AM - permalink
    I havent measured but I believe the diffs (ARC vs SpecR) are wider causing that. ARC ones are wider. I have a ARC gear diff in my Serpent and that dropped right in, the S411 has shorter shafts too.

    Inner pin to outer pin holes all matched when I first did mine so everyting fit on.
  4. Robbob
    03-28-2014 11:29 AM - permalink
    SpecR ones
  5. mrjudd77
    02-26-2014 12:35 PM - permalink
    No problems. How did you end up using it?
  6. Robbob
    02-26-2014 07:51 AM - permalink
    Yup - I used the SpecR inner pins, pivots and mounts ...... the only change is the outer hinge pin.

    SpecR is too small so I switched to ARC outer carriers, C's, Knuckles and pins (xray works too) .... Depending on where you are ARC is less expensive and Ive had zero problems with mine.

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  • About rtenzo02
    Rc cars, plastic models
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  • Last Activity: 06-09-2018 11:07 AM
  • Join Date: 12-04-2010
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