Rosejoints

[Toddy 7]

Anybody fitted these internal type rosejoints to a std 205/309 wishbone

 

[swordfish210 20]

FYI they're called spherical bearings. Doesn't look like too bad an idea

[Rippthrough 98]

Spherical bearings, far better option for the hub end than a rosejoint in shear is.

[swordfish210 20]

Spherical bearings, far better option for the hub end than a rosejoint in shear is.

 

You mean remove the balljoint and replace it with a sperical?

[omega 82]

so how would you fit these? are they strong enough?

[JoshGti 8]

Surely it cant be as simple as finding one the right dimensions, milling out the balljoint and fitting one of these in? Surely it would already have been done if it was that simple?

[Toddy 7]

Surely it cant be as simple as finding one the right dimensions, milling out the balljoint and fitting one of these in? Surely it would already have been done if it was that simple?

 

 

The reason I posted the picture was to replace the rubber bushes not the balljoint.

[Cameron 16]

I'm sure the LBJ is just a press-fit in the forged wishbone anyway, isn't it? I have a feeling they're pressed in from the underside, has anyone ever taken a wishbone apart to see?

 

I guess it all depends what you're left with once the balljoint is removed, as you'd need a lip on the top edge to stop the bearing from popping out as you hit bumps. I wouldn't trust a plain hole and press-fit to keep the bearing in!

 

On the subject of the original post, I don't know of anyone who has replaced the bushes with spherical bearings. Those Lotus Elise ones you've pictured are very similar to what you'd need to do for a 205 though, and IMO a much better solution to having rod-ends (AKA Rose Joints) inboard a la Compbrake's s*ite.

[welshpug 1,655]

Pretty sure I have seen something like this used on the inner ends of a 205 wishbone, with the usual RJ on the hub end.

 

not really sure how a 205 BJ is put together, I know a 106 is pressed in but they are available separately.

 

might take a grinder to some 309 bones I have spare...

[Cameron 16]

It has to be pressed in, or shrunk fit or something.. No way they would forge the wishbone with the BJ in place!

 

I reckon if you took a cutting disc vertically down the bit that wraps round the BJ it'd ping open and the BJ would fall out, then you can see which direction it fits in from - my bet is from below.

[ifcho 0]

There is a threaded cap on the lower side of the wishbone through which the balljoint is inserted. Usually there are a few tacks with a welder to keep it secure. You remove the cap and there is the plastic "bearing" thing which just falls down, after which you can take the actual balljoint out.

[JoshGti 8]

Toddy, i think something solid like a spherical bearing would take a lot of abuse if it was used to replace the bushes? I'm sure it could be done and would probably be fine if it was a dedicated track car, but for a fast/road car surely if you just wanted to tighten up things poly bushes would suffice.

 

But the idea of using these to replace worn LBJ's could be a good idea, if they're fitted like ifcho says then it could be easy enough to pop some spherical bearings in and use a bolt the correct size through the middle with a milled edge for the pinch bolt to sit through.

[Cameron 16]

Yeah solid bearings as opposed to bushes would definitely be unsuitable for a road car, interior noise would be pretty horrific for a start, but as you say the state of UK roads would knacker them within a few months. Considering the price of spherical bearings and especially rod ends, this isn't really practical!

[Rippthrough 98]

Yeah solid bearings as opposed to bushes would definitely be unsuitable for a road car, interior noise would be pretty horrific for a start, but as you say the state of UK roads would knacker them within a few months. Considering the price of spherical bearings and especially rod ends, this isn't really practical!

 

^^Mine's actually pretty quiet, it's only really broken/gravel roads that they get a touch noisy (but then, gravel roads are noisy anyway...).

Also been on well over a year, not a hint of play yet.

 

Design/use 'em right and they work just fine

I'm not suggesting they'll last as long or be quite as quiet and smooth riding as OE bushes, but you'd be surprised.

 

Edited June 17, 2011 by Rippthrough

[JoshGti 8]

This has got me interested so ive bought a pair of new to me suspension arms and im gonna get mine blasted and painted. Will try an replace the balljoint with one of these and see what happens, looking at using something like this.

 

Question is before i receive my new arms, does anyone know the mesasurements of the standard ball joint pin, and what i would use to replace it in this application? What do the peoiple running rosejointed arms use whilst maintaining the use of the pinch bolt?

Edited July 12, 2011 by JoshGti

[205wrc 16]

A sherical bearing instead of a ball joint has been done. See here........ http://jsmotorsport-machining.co.uk/index.php?option=com_content&view=article&id=19&Itemid=41

 

The pic there shows a MK2 Escort arm (adjustable TCA with replacement pin), but he does them for 205's and 309's as well. This conversion can only be done on "Factored" arms though, not genuine Peugeot ones, as the material around the genuine ball joint is much thinner.

Basically, he removes, the ball joint, mills out the arm, cuts a groove for a circlip, presses in a sperical bearing and makes a new pin and dust cap.

Edited July 12, 2011 by 205wrc