[FIN-GTJ1300]

Have any body add this? View attachment 1658157 View attachment 1658157 View attachment 1658157

 

[Top Down]

Whats the issue?

 

[FIN-GTJ1300]

Target is get less rear wheel movement.
Also prevent radial forces inside limited slip differential.

 

[Top Down]

I am still not sure what you are talking about, but this may be of interest to me as well. Are you saying if you grab the rear wheel top and bottom it moves, like a rear wheel bearing is worn? This is of course the movement of the half shaft in the diff and seems to affect 2.0 LSD diffs, correct?

 

[FIN-GTJ1300]

I am still not sure what you are talking about, but this may be of interest to me as well. Are you saying if you grab the rear wheel top and bottom it moves, like a rear wheel bearing is worn? This is of course the movement of the half shaft in the diff and seems to affect 2.0 LSD diffs, correct?

Yes, correct that is the idea. Not drive yet, but wheel movement is very small. I hope that I can test before winter. Will be seen will the winter bee faster than me to fix Alfa. Without the support ring clearance of wheel bearing was quite big. I repair same time LSD diff, I hope that LSD will not wear so fast. Wheel off set is 0 mm or bit negative so force on the wheel bearing and LSD diff are bigger that normal off set wheels.

 

[FIN-GTJ1300]

Idea is prevent this like movement, I only fix LSD diff an add support ring wheel movement is no next to nothing.

 

[Top Down]

You cannot judge any play in the wheel bearing like that, like you show in the video. If with the axle assembled, on the car, with the rear wheels on and jacked up, you grab hold of the rear wheel top and bottom you will get a very small amount of movement, that is fine. There is nothing to support the end of the half shaft doing what you show in the video, the wheel bearing is only a single track, of course the half shaft will move.

 

[FIN-GTJ1300]

I don't judge anything, just asking have anybody use it before.
Maybe it is wrong thing to use that support ring, but anyhow I will test it.
At this point I'm happy that solution. Reality comes up after some years then I know was it good or not.

 

[Top Down]

OK, that 'ring' you see which I think you refer to is not to support the half shaft. If you can imagine when the crown wheel and pinion is thrashing around in a bath of oil, without that ring the oil might be thrown up the axle tube, this could do two things, neither of them you want. First, it could leave the crown wheel and pinion with not enough oil and second you could build oil pressure in the axle tube, pushing the oil out of the hub oil seal. Best to think of it like a baffle in an engine sump rather than a support ring.

 

[goats]

The small air vent tube in the diff side tube takes care of that. I believe some float is needed otherwise you will lock up all the time.

 

[FIN-GTJ1300]

Support ring location inside the LSD, moro or less just under half shaft inner bearing, it can prevent oil movement little bit from differential itself. Mainly oil flow to differential goes through bigger holes of differential housing.
The first video gave bigger movement thet what is can be in reality, I will add other video where can be seen real movement / backlash without that support ring.
But anyhow I will take the risk.
I hope that result can be seen after five to ten years. 😄
earlier then something has wrong. 🤔🙁

 

[FIN-GTJ1300]

 

[pescara]

once in the differential, you half shaft is "fixed" with the wheel bearing and the differential. They are two holding points at the each ends of the half shaft.

if you have used teeth on your half shaft, then you will have an internal clearance once unit completed.

 

[FIN-GTJ1300]

Now update support ring is installed and ready. Alfa it self is not yet ready for test.
Next update after test, then of it ok, next post I hope after five to ten years. 😂🍀🍀🍀🍀

 

[FIN-GTJ1300]

Now it has been made rosd test, function perfectly🍀🍀🍀🍀
Next summer track days will tell more.

 

[Jim G]

Do you have a picture of the ring you installed?

 

[FIN-GTJ1300]

Sorry no more photos or pictures, ring is hand made. I will do another rear axle this winter more photos and dimensions will come later.

 

[Alfar7]

Movement of the axle shaft is normal It will never be "fixed" by the outer bearing. As well the drive flange in the LSD should have enough clearance so it isnt "locked in place. With the unit set up de-cambering the tubes to allow 1/2 a degree of neg camber at the wheels is possible for race cars.

If you can move a wheel in and out it`s due to aftermarket bearings or removal of the dust shield. A fix for that is to fit a snap ring between the retainer/brake mount and the bearing or between the bearing and tube.
Then the retainer will be clamping the bearing race tightly as it should.
Right Gordon?

 

[alfaparticle]

A fix for that is to fit a snap ring between the retainer/brake mount and the bearing or between the bearing and tube.

And then the dust shield rattles.

 

[FIN-GTJ1300]

Movement of the axle shaft is normal It will never be "fixed" by the outer bearing. As well the drive flange in the LSD should have enough clearance so it isnt "locked in place. With the unit set up de-cambering the tubes to allow 1/2 a degree of neg camber at the wheels is possible for race cars.

Now it is fixed an no movement in acceleration or braking.
1/2 a degree of neg camber will best sollution, but too much and to professional machining work for me.
After small test I was happy, it is enough. 😁👍🍀🍀🍀