DEX210 Slipper or Diff Problem

Axeboy · #1 16-09-2013

Hi Guys

Been slowly building my DEX210 kit and its almost done but has a bit of a problem.

Basically the power from the motor is making it to the spur ok, but almost nothing in the wheels. Well, when I say nothing, they will turn off the ground but on the level it sits almost on the spot, maybe moving a touch.

The slipper seems fine but I can only assume its the ball diff. I followed the guide on building it as well.

Any advice on the tightness of the ball diff screw? And also, the tightness of the slipper in-case I'm doing anything here too?

Kosmickid · #2 16-09-2013

I had quite a few issues with my kit too where the gearbox was binding in a couple of places.

1) Check the 3 long screws that go through the gearbox around the lay shaft spacer and bolt the motor plate down are not hitting the slipper disc. If tightened too far or not correctly installed with washers or orientated they can touch the disc and result in the whole thing binding up. In my case all 3 screws were protruding too far.

2) Check the Layshaft spacer. Mine had to be machined down a fraction as when the gearbox was tightened it would bind up again. Machining it down solved this issue.

I would remove the motor and check the gearbox by turning it by hand which should be easy. You can remove one thing at a time, Layshaft spacer, differential, gears to check what the issue is. It's a tedious job but you'll work it out I'm sure.
As I mentioned I had several quality control issues with my kit which were addressed by Durango with new parts. If you need me to talk you through anything just PM me. Good luck

Axeboy · #3 16-09-2013

Thanks for that.

I managed to tighten the diff a little better using a better driver and its working "ok".

It doesn't sound right to me though so I think I'm gonna strip it down and again both diff and box to see if it helps. I checked the build throughout and did turn it by hand, but I must have missed something or a screw might be touching as you have said.

On another note, is the RM3 setup reverse rotation on the motor?

Thanks for the help matey

Kosmickid · #4 16-09-2013

No worries. This should answer your motor rotation question: (yes, Rm3 rotates backwards)

http://www.team-durango.com/blog/201...onfigurations/

Axeboy · #5 16-09-2013

Appreciate the help

Seems to all be in good order now. Not had a real chance to test but it sounds sweeter (found a few screws protruding).

Thanks again

Axeboy · #6 17-09-2013

I still think I need to rebuild the diff. Turning one back wheel by hand is making the other wheel turn the same way, so I think I've over tightened it.

When it was loose though, the drive issues were happening.

I think i'll plan a strip down at the weekend

Axeboy · #7 18-09-2013

Ive got the diff stripped... almost.

I cant get the bearing above the circlip off, its pretty tight in there. Ive got a pic below, but everything "seems" to be in order.

Any advice?

HOTSHOT III · #8 18-09-2013

Quote:

Originally Posted by Axeboy

Ive got the diff stripped... almost.

I cant get the bearing above the circlip off, its pretty tight in there. Ive got a pic below, but everything "seems" to be in order.

Any advice?

Try using external circlip pliers on the inner race.

OneKiwi · #9 18-09-2013

The clip can pop out when you tighten it if you have it in the wrong way.
There is a rounded edge and a square edge that has to be in the right way chech the TD website
You can always swap it for an xray one that is square on both sides.

Axeboy · #10 18-09-2013

Thanks guys, ill persevere

CARB · #11 18-09-2013

do you mean above or below the circlip, as it looks like the inner race and balls have fallen out of the bearing, leaving the outer race still in the diff half.

Axeboy · #12 21-09-2013

Well, long story short I ruined the bearing above the circlip trying to get it out. Doh.

So being impatient as I am, I just bought a geared diff.

Its built, back in the car and running superb.