Originally Posted by Osiris 75
I ended up going with the MTX-3 pinions and spurs, and haven't had any more problems stripping gears!! All the Mugen drivers at my local track have done the same!!
a friend of mine did that when stripped two gears on one day way too low! running the 16-20 1pitch mtx3 gears is like running 19-25 on the mtx4, no accelaration at all!
he later found out that the screw holding the graphite tray next to the brace was loose, he tied it and no more stripping.
I did this to prevent stripping gears.
1 6x10 .2mm shim between the pin and the bearing in the 2 speed shaft(or dremel the brace to avoid contact)
2 endplay of the main shaft shoul be minimum, enough so that the one way hub rolls freely without the spurs losing contact at all time with the pinions when the centax is engaged
3 check the space between the speed shoes, as long as there's no friction with the two speed hub, it's ok
4 adjust your centax at your most desirable setting, but keep in mind the endplay of the pinions, there should be contact at all time with the spus, if not, the signs of wear on your spur will let you know.
5 the most important, the pinions should be perfectly aligned both vertical and horizontal, the mtx4 is not unforgiving on this matter as the 3, and the reason is simple, smaller pinions!
6 adjust your gear meshing using only the smaller spur, should be parallel, free, and check the endplay of the centax, contact at all times, then install the bigger spur and it should be also free, if not too free, a couple runs will automatically adjust them!
I hope it helps you, cuz since I did this my spurs are like new, Heck I even have a 59 spur from my mtx3 running on my mtx4, and my 2 speed spur has 2 gallons of fuel and still works fine!