i can figure it out, i kept melting spur gears, finally go tthat fixed then i was running it earlier today and it made the same noise. So i thought i did it again, but on closer inspection the gear was fine and still lined up perfectly. I ran it a little more to trouble shoot and it seems to be more in the clutch system? its making that same terrible screech it makes when you melt a gear. any ideas?

Clutch?????

I put this on mine and never had to worry about it again.

http://www3.towerhobbies.com/cgi-bin...&I=LXUD52&P=ML

If you don't what to go that route. It sounds like you might have your gear mesh to tight or too loose. You might want to also take your spur gear off and check things out. Look for anything that might not belong, Check your pegs etc. When you install it back tighten it up tight and then maybe back off a couple turns, But keep it fairly tight. With the mesh you should be able to feed a piece of paper between both gears. They should also spin very freely with the paper out. Hope this helps

Somethings to check that cause excessive heat in the clutch bell. Too loose of a slipper clutch, worn out clutch shoes, worn out clutch bell housing bearings, and binding between the spur and clutch bell. If you still can't figure it out try the following: reversing the rotation of your clutch shoe(the clutch bell rotates against the trailing edge of the clutch shoes)creates a more positive engagment of the clutch reducing clutch slip which reduces heat build up, and cleaning and scuffing up the inside of the clutch bell for a more positive clutch engagment. You might even try a new glow plug, believe it or not, but a worn out glow plug can lead to enough power loss that it over works the clutch to push the existing gear and tire combo. I run vented clutch bells and flywheels on my vehicles to further reduce heat build up in the clutch. Also, if you run a tall gear ratio or have large tires on your truck it will put more stress on the clutch and heat things up fast as well. Hope this gives you more insight on things.