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Unread 30-03-2011, 19:24
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Re: AndyMark shifter Dog Gear screw problem - lower your pressures

Quote:
Originally Posted by James Tonthat View Post
We found that running about 14 competition level matches breaks the screws. It happened to our practice bot at home, and then again at Lone Star. Our solution so far is to replace the screws (M2.5 x 20, McM# 91290A108) every three competition rounds and running at 45 psi.

Edit: The only thing is the shifters shift a lot more sluggishly at 45 psi.
Are those ones from McMaster sheering too? Those are class 12.9 bolts...Or have you not actually experienced any problems with them and are changing them out for "just in case?"