Revo Hybrid diff V3 - RC-Monster Forums

neweuser · 08.29.2009, 06:13 PM

are you all cross tighting? or going in a line...i assemble mine like mounting a tire...making sure all sides are tightened all the same.

simplechamp · 08.29.2009, 07:08 PM

Quote:

Originally Posted by neweuser

are you all cross tighting? or going in a line...i assemble mine like mounting a tire...making sure all sides are tightened all the same.

Yeah I do cross tightening also, so everything is as even as possible. After about 25 times of trying to assemble the diffs I actually got them to line up and not wobble. I don't know how I did it, just kept re-trying and trying to be extra careful lining up the holes. Now I'm afraid to take them back apart and fill them with oil, I'll probably never get them assembled right again!

I think if the holes are misaligned by a tiny bit or if the screws are threaded in even a hair off-center then the ring gear won't seat right (possibly caused by the diff cup getting tweaked out of shape by misaligned screws)

08.29.2009, 10:01 PM

Quote:

Originally Posted by Chadworkz

Appetite, titanium wouldn't be the best insert material for the output shafts to ride on, because even though Ti is very hard, is has a high friction coefficient...brass is the best choice for that application, with 304 stainless-steel being second.

Thanks for the tip.

The inserts I had in mind was for supporting the pins for the spider gears, not for the output shaft to ride on. I was thinking of making the entire diff cup out of 7075-T6 alu. and only the "spider-pin inserts" out of Ti, so the output shaft will ride on the alu. cup itself. Is this a bad idea?
Maybe a press fit brass sleeve in the bottom of the cup will be better?

Quote:

Originally Posted by neweuser

are you all cross tighting? or going in a line...i assemble mine like mounting a tire...making sure all sides are tightened all the same.

Yes, I too am cross tightening the screws. The problem with my cups is that the surface that mates to the ring gear is not perpendicular to the axis of the metal insert in the bottom of of the cup which the bearing sits on. (probably not proper metrology jargon..

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