What would cause this?

[What's_nitro?]

Yeah... 4s/6s and a Lehner 1940/7.

[brushlessboy16]

Originally Posted by What's_nitro?

Yeah... 4s/6s and a Lehner 1940/7.

is that really necesarry?

[lincpimp]

Also keep in mind the pinion spins much more than the spur does. So even if the material on both was identical the pinion would wear faster. Say you run 13/46 gearing, the pinion rotates 3.5 times more than the spur. So hardened pinon needs to be many times harder than the spur to survive...

[brushlessboy16]

Originally Posted by lincpimp

Also keep in mind the pinion spins much more than the spur does. So even if the material on both was identical the pinion would wear faster. Say you run 13/46 gearing, the pinion rotates 3.5 times more than the spur. So hardened pinon needs to be many times harder than the spur to survive...

very true linc, but that was after only 20 minutes of running

[Patrick]

Originally Posted by brushlessboy16

very true linc, but that was after only 20 minutes of running

I had a non hardened pinion with a plastic spur for a couple of months with very little wear. One night at racing my mesh slipped a bit and melted the spur. My only spare spur was a steel one, so I decided to use it for the last race which is only 5 minutes. After 4 minutes the pinion had no teeth left at all and my car had no drive.

[Tempted]

Originally Posted by Patrick

After 4 minutes the pinion had no left teeth at all.

As opposed to right teeth?

[Patrick]

Originally Posted by Tempted

As opposed to right teeth?

Don't know what your talking about, I don't see anything wrong with my post...