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  1. #1
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    Screw size for driveshaft pin

    In looking at the exploded views the screw that holds the rear drive shaft (7250/7251) coupling in place is labelled as "7057 M3/10". What size hex do I need to remove that? Seem like 1.5 is to small, and the 2.5 is to big. I guess it would be a 2mm?

  2. #2
    RC Turnbuckle Jr. Petertje60's Avatar
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    Jan 2011
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    In my case that is a 1.5mm wrench.
    Nobody is born with experience

  3. #3
    RC Qualifier
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    May 2012
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    try another wrench, they vary in width. just a few thousandths is a big percentage of something ~.060 wide and you DONT want it to slip when you put the heat on it
    There are lots of ways to do that. Most are wrong.

  4. #4
    RC poster
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    Quote Originally Posted by Petertje60 View Post
    In my case that is a 1.5mm wrench.
    Ya, that is what feels right, but there is a lot of slop so I didn't want to strip it trying

    Quote Originally Posted by photon_trap View Post
    try another wrench, they vary in width. just a few thousandths is a big percentage of something ~.060 wide and you DONT want it to slip when you put the heat on it
    good idea, I have another metric hex set around somewhere I can try

  5. #5
    RC poster
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    Mar 2013
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    fyi.. a different 1.5mm worked perfect

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