Dex210 ball diff spring length? Different lengths?

[southern racer]

Hi

Does anyone know if Durango have purposefully changed the length of the spring in the ball diff in the Dex210?

Just building one and noticed the diff spring I have looks a couple of coils longer than the manual pics and some photos online. When fitted it, and adjusted to correct tension, it results in the nut sitting not that far down the outdrive slot. This means the dogbone end sits fairly shallow on that side in the outdrive and means it binds slightly on suspension travel as the dog bone end rubs on the plastic nut housing.

Have checked the diff build carefully and all seems correct, just the spring seems too long?

Is this a known issue? Have I got the wrong spring in my kit?

Shame as other than this the kit has been enjoyable to build (known printed manual
errors aside).

Many thanks in advance.

[Bernie_W]

Hi

I have recently built a 210 and have not had this problem, I'm guessing you have the wrong spring.

[southern racer]

Have ordered a new spring kit as it's definitely a coil longer than in pics/photos. (not mixed up with slipper spring btw).

[southern racer]

Thanks Drewdrop. Hopefully just a packing error at Durango. Seemed easier to just buy spare than take it up with them with racing coming up!

[CC44]

Once you adjust the diff in anger (rather than on the bench), you will find it needs tightening and therefore doesn't bind. Mine was exactly the same.

This assumes the spring is the correct one!

:thumbsup:

[jayropes]

I've had exactly the same issue!!

changed to an old geared diff I had in the end!!!

[Hulk]

Hi,

the length of the spring was increased quite a long time ago, to stop the T-nut clamping right down on the outdrive. This allows you to adjust the diff tension correctly, without everything binding up.

You have to compress the spring a good few times with a pair of pliers, before you put the diff together.

Do this and the dogbone will not catch on the T-nut throughout the suspension travel.

Craig.

[southern racer]

Hi Craig

I compressed the spring several times fully, I must have the wrong spring as even after this the nut sits about half way down the outdrive slot and the dogbone only just inside. The suspension doesn't move smoothly because of it.

Odd.

Will investigate more...

[Paultje040]

What is the length of the spring you have. And how many coils does it have.

I have a new unbuild kit, i could compair it to the spring in my kit.

I have the exact same problem as you have. However. If i tighten the balldiff some more. The nut goes in further. Maybe the diff needs to be run in.

[southern racer]

Hi

I think I have sorted this one, they have lengthed the spring to 5 coils, as standard it does seem too long to start with. I had to take the diff apart and compress the spring much more heavily handed than 3 times to get it to compress and make it about 1-2mm shorter than the the spring comes new (compared this to the replacement one I bought...which was same length...so I didn't have wrong spring as it turns out). After I had done that, and then rebuilt diff, then put it in the car and tightened/slacked the diff off a few times I have managed to get the spring to the point that it doesn't bind at all on the dogbone end(test this by detaching shocks from arms and see if they move up and down 100% freely on both sides).

Worth noting when building new, as mentioned by others above, I think you could probably get in the same place by running the diff in for a few races, till the spring wears in, but you'd have to put up with a bit of binding on one side.

Thanks for all the responses chaps.

cheers

[Hulk]

Told you :p lol.

Craig.