First outing with my son and the Durga ended with two broken diffs

[dimblum]

I found that tightening the diffs fully and backing off the screw 1/4 or 1/2 turn caused lots of problems with the DB-01 diffs - crushing of the spring, damage to the K4 part that holds the locknut and damage to the thrust bearing.. I know this method works for other diff designs, but it did not seem to be the intention for the Tamiya diff.

I have since followed the directions Tamiya provided in the DB-01 manual: hold the diff in one hand while locking both diff joints with allen keys etc. Now tighten the diff screw little by little until you can no longer turn the pulley with your other hand - then 'stop'..

Setting my diffs this way has eliminated all problems. The diffs work perfectly for racing - even after running a 6.5T..

P.S. The default setting for the slipper clutch (3mm) has worked pretty good so far. I can hear it slip and catch with higher power motors much easier than lower power motors.

I think you may be right about backing it off a little if you are running say a 13.5T or higher turn motor.

Hope this helps.

Dan