I have a Max St pro too. last month when I put the OS 18 in it I decided to change out the Diff gears with steel ones. The Diff casing I bought was defective too. I had to put vise grips on each shaft to get them to turn in oppisite directions. I installed it anyway and after about 10,000 rotations that stiffness went away.
As far as the spurs go. I was stripping 2nd gear alot because of the way the shift point was shifting at too many RPM's. No matter how well you have them meshed if they are shifting too late it puts to much initial force on the 2nd/3rd gear. Lower the shift point. meaning make it shift earlier when your rpms arent as high.
Also what method are you using to mesh your gears?? Its a tricky process with mine with 2 gears I couldnt imagine 3 gears.
ORIGINAL: SenSeiRC
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