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Old 07-21-2009, 09:41 PM   #16
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there is one thing no one mention is that the one way bearing can go bad or not oiled properly
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Old 07-22-2009, 10:12 AM   #17
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Originally Posted by VA_Racer View Post
OK the only reason there should be any gear striped is because either gear mesh, or clutch bell bearing are bad or thrust bearing bad, engine moved ie gear mesh. People complain about this problem and most of the time say its the car, but most of the time its user error. I don't strip gears unless I miss the mesh. I know people that have never striped a gear.

Try cutting 2 strips of paper just enough to fit between the pinions and the gears and set it that way.

VA_Racer, i was going to ask how to mesh correctly, so i guess i remove the 2nd gear, and mesh the 1st gear first, i was using mugen parts bag plastic package doubled to do this but i was doing both at the same time, so i'll give the doubled paper a shot, thanks for all you guys help.
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Old 07-22-2009, 10:22 AM   #18
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I would also check your thrust bearing. The only other time I stripped 1st is my tires where too low and in a turn the chassis rolled enough for the 1st gear to touch the ground.


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Old 07-22-2009, 11:04 AM   #19
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I have had my spur gears in for well over a year now, and they are just starting to show signs of wear.
When I ran my MTX3, I changed over to the .08 gears, and stripped them every time I ran the car. I went back to the stock gars for the MTX3, and never had another problem.
There really are quite a few areas that will cause the spur gears to strip, but if you are at your wits end, try changing the spur gears and pinion gears to the MTX3 stock gears. You will not have has many tuning options, but it may do the trick so where you will not strip the gears out.
Areas where I would check out first
gear mesh.
rear layshaft<[possibly bent>
clutch bell and or clutch bell bearings
chassis tweaked
engine moving under stress
chassis to brace
bearings in the spur gears
just a few items I would check first
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Old 11-09-2009, 11:05 AM   #20
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Hi,
Hopefully you've found the cure to your gear stripping. Certainly a lot of great info here. If NO other cure has helped, change your rear bulk heads. I have a very high mileage MTX4 and early this season I got around to changing my rear bulk heads and found the bearing hole on that side elongated. It cured my mesh problems...... it's a long shot, but it can happen. Good racing to ya.
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Old 11-09-2009, 11:40 AM   #21
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Then maybe I'm the only person in this forum with the least complaint of 1st gear stripping problem ... (just kiddin.... maybe I got lucky all this time )

... I get 1st or 2nd gear stripping problem only 3 times since 2004, the year I started nitro racing :

1 time : mtx3 ...... engine block shifting after impact.
1 time : mrx4r ..... engine block shifting after impact.
1 time : G4S ....... wrong size / wrong application 1st and 2nd spur gear vs 1st and 2nd pinion gear.
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Old 11-09-2009, 02:04 PM   #22
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Quote:
Originally Posted by Loveless View Post
VA_Racer, i was going to ask how to mesh correctly, so i guess i remove the 2nd gear, and mesh the 1st gear first, i was using mugen parts bag plastic package doubled to do this but i was doing both at the same time, so i'll give the doubled paper a shot, thanks for all you guys help.




I don't have a mugen but the same principle aplies. I get the foil out of a ciggarette packet and double it over. I then take my first gear spur off and adjust my mesh with the the second gear. Put the paper between the spur and pinion and squeeze them together really tight then swing off the motor mount srews and you should be right to go. Just double check it all once everything is installed again that your first gear meshed ok. There is a fine line between a perfect gear mesh and mesh that's to tight/loose.

Hope this was what you were after
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