Quote:
Originally Posted by JosephShanks
Captian, did you by chance put the gearbox build guide that Durango posted a link to to use? Here it is again. http://www.team-durango.com/blog/?p=2584 I bought my Rango used from a friend at the track. A couple gears were chewed up and the car sounded like a chain saw. When rebuilding the car found my friend had not taken all the "slack" out of the bevel gear(imput shaft). I have a couple weeks on the car now with no problems. I too think the problem was the bevel gear. Also the set screw for the bevel gear gear needs to be good and tight with the proper amount of loctite. Good luck!  Joseph. |
The last picture of that build guide was the most important for me too. Most people I know take that play away using 2cm of electrical tape at the top and bottom of the bevel bearings. That s probably not a nice solution to put on the blog, but maybe better than overtightening those 2 screws.
Maybe Durango can change their (inner?) mold so it leaves a little more material behind at the top and bottom of the bevel bearings.Then the picture that says
"Tighten the grub screw whilst applying pressure to squeeze the two halves together."
becomes less critical, because sideways pressure on ball bearings cant improve smoothness and bearing life.
For 3 months now I use 2 pieces of electrical tape, and a copper shim at each side: all my gearboxes are very free, and no teeth breaking anymore. (before 1 diff ring every month, no matter what shims and where)