Durgla diffs

[DCM]

Balls round the outer holes only
Place a smear of diff grease on the diff halve to keep the diff plate in place.
The inner hole of the thrust bearing, one side is radiused, that goes to the head of the diff screw.
If it is a new diff spring, compress in a pair of pliars, if not, tighten diff till it won't slip, bed diff in, test and adjust as necessary.

[dimblum]

Originally Posted by Fat Corgi

Okay,
So I've got the some new ceramic balls, diff rings and metal diff halves. What do people use to attach the rings to the diff halves? I am assuming you down glue or threadlock them? Secondly, the thrust bearing that lives inside this assembly, how do people orientate that bearing. The flat edge closest to the centre of the diff, or away from it?
The are as many opinions on how much you need to tighten the nut on the diffs, is there a consensus?
Lastly, do people put the balls in the 3 extra holes in the diff pulleys, or just around the outer ring (12 holes).
Thanks

I followed Tamiya's requirements for my DB-01 diffs (with the 501X halves) and have never melted or damaged anything. As a matter of fact my diffs have been problem free and I run a Brushless Novak 6.5T when I race.

Here are Tamiya's answers to your questions:

1. Use diff grease to attach the rings to the diff halves. The rings will not slide against the halves. The metal will create it's own friction under pressure.

2. I think I know what you mean about the thrust bearing. It should be inserted with the flat edge away from the center of the diff so that the head of the screw has the most surface area to grip onto the thrust bearing.

3. There is no need to put additional diff balls in the three extra holes in the pulley. Those holes are reserved for attaching a front one-way.

4. The Tamiya method for tightening the diff has been mentioned before in the forums. Tamiya shows this method with a slightly confusing diagram in the DB-01 build manual (shows the diff with two parts locking the arms - an arrow - and a "X" symbol). Basically you put two small allen keys between the slots in the diff arms, hold the diffs in your hand (grabbing the allen keys to lock the arms in place), then you try to rotate the pulley toward you. If you can rotate the pulley while the diff arms are locked in place, then it is too loose. Keep tightening the diff screw until you can no longer turn the pulley by force.. This is about perfect for your diffs. Overtightening can be bad, so stop once you can no longer turn the pulley, then insert the diffs into your DB-01.

Hope this helps.

[Fat Corgi]

Thanks again guys.

[94eg!]

Here is an illustration from another Tamiya manual to help people visualize the process. It's the same with a pulley or gear. Keep in mind you will need to check & retighten after a run or two cause the diff rings will wear in...