Making My Own Control Arms

[lambertius]

Thanks for that! Throw up a couple of pictures of those new shiny boys!

After a bit of faffing about, I'm going to model up the hub and simulate the loads in situ as well. Mostly out of interest.

 

[lambertius]

So the lab in Melbourne has finally received my sample. Probably a few more days before I get the test results. I've started modelling the top arm.

Any betting men out there on what the arms are made of? I'm also getting a bunch of surface hardness tests to look for hardening treatments and forging.

 

[hunta]

Any betting men out there on what the arms are made of?

I'm going to go with Parmesan.

 

[lambertius]

I'm thinking its probably an Edam.

 

[philw696]

Probably a Propionibacterium.

 

[Devonboy]

It’s Italian, Parmesan is used on Ferrari-
My guess is Pecorino for Maserati

 

[3200_Josh]

Maybe a silly question but why can’t these be pushed/pulled out? Does anyone know what the joint is and if you can get them anywhere else?
Quarantine has made me do some strange things!

 

[alfatwo]

Maybe a silly question but why can’t these be pushed/pulled out? Does anyone know what the joint is and if you can get them anywhere else?
Quarantine has made me do some strange things!
View attachment 69048View attachment 69049View attachment 69050

How's the diff, is there any backlash?

Dave

 

[Zep]

Maybe a silly question but why can’t these be pushed/pulled out? Does anyone know what the joint is and if you can get them anywhere else?
Quarantine has made me do some strange things!
View attachment 69048View attachment 69049View attachment 69050

Unfortunately not.

 

[3200_Josh]

How's the diff, is there any backlash?

Dave

All seems fine to me Dave, nothing out of the ordinary.

 

[lambertius]

Ooof, what an effort pulling that our on jack stands!

The ball joints can't be pulled out and the shape of the arm means they can't be pressed either. Whatever the alloy for the arms is, it is way too brittle to survive that kind of action anyway.

 

[TimR]

Ooof, what an effort pulling that our on jack stands!

And with so little space either side...Quarantine must have really fired your brain !!?
I hope getting it back in isnt too tricky...!

 

[elephant4009]

How on earth did 3200 josh get that assembly out with the limited kit & space he had. I'd want a two post car lift minimum. The mans a hero.

 

[3200_Josh]

Ooof, what an effort pulling that our on jack stands!

The ball joints can't be pulled out and the shape of the arm means they can't be pressed either. Whatever the alloy for the arms is, it is way too brittle to survive that kind of action anyway.

Let’s just say I needed to be fairly flexible, and massively patient!

Say you got one out, could you press a new one in without too much damage?

 

[3200_Josh]

And with so little space either side...Quarantine must have really fired your brain !!?
I hope getting it back in isnt too tricky...!

Any tips getting in back in wouldn’t go amiss

 

[3200_Josh]

How on earth did 3200 josh get that assembly out with the limited kit & space he had. I'd want a two post car lift minimum. The mans a hero.

This, I had to show my wife! She really didn’t appreciate the effort

 

[3200_Josh]

Without hijacking this thread, does anyone know the best way to get the rear shocks out?

Also, has there been any progress on the Arms?

 

[Zep]

Without hijacking this thread, does anyone know the best way to get the rear shocks out?

Also, has there been any progress on the Arms?

If it is anything like the 4200 you have to strip
the boot lining and then reach in next to the petrol tank to get to the top bits.

Eurospares do a pattern part from the OEM manufacturer which is probably your best bet.

 

[rs48635]

Without hijacking this thread, does anyone know the best way to get the rear shocks out?

Also, has there been any progress on the Arms?

never done shock on my 3200 so unsure about fasteners. The QP did involve some fiddling inside the boot to disconnect skyhook cable but think bolts accessed from wheel bay.

 

[Oishi]

Lambertius, have you sectioned an arm through the ball joint yet? It looks to me like the arms are forged around the joint capsule. The forging line down the arm is a clue. I work for a company that fabs doodads from nonmetallic materials (ceramics mostly) and am used to machining with diamond and ceramic cutters. Machining out the old ball joint would not be a problem, however there is not much aluminum around the capsule to support a replacement if a suitable replacement could be found. I am following your progress with interest.