Solid subframe bush failure.

[driftin jo]

Get them made in Nylon via Volcano RS

Nylon is a very bad choice for bushes, it is hygroscopic, it will absorb water and expand when it gets wet and as it is pressed in to a metal surround that will not give it will thus indent the bush crushing it beyond it's elastic limit, then when it dries out in summer on a hot day it will shrink and end up loose and rattle about.

[Flat on my back]

All mine are Hard Black Anodised, costs a little more but they do last longer

...and picking the right alloy at the start helps.

[andy10v]

Have made a quite a few sets of delrin bushes for the urs4/6 mite try sum in my S2

I did ask you for a set a while back

[andy10v]

Nylon is a very bad choice for bushes, it is hygroscopic, it will absorb water and expand when it gets wet and as it is pressed in to a metal surround that will not give it will thus indent the bush crushing it beyond it's elastic limit, then when it dries out in summer on a hot day it will shrink and end up loose and rattle about.

I was going to make a set, until I asked my old man.

[andy10v]

Other thing I was wondering, the subframes are steel, could you fit steel ones, weld them in, then prime/paint etc?

Would allow the holes to be offset to get some castor.

[Rusty]

Quite a lot of cars don't have rubber bushes, so that will work very well!

[Wrath]

How long were they seated on car?

[afterburner]

Anyone have any drawings/is willing to share the dimensions of the bushings? I want to make some delrin bushings for me, I already made the inner control arm ones myself, but don't want to disassemble the subframe yet to take the dimensions.

[BRY]

Make them from unobtanium, it's light, strong and very inert.

Does anyone want a set made of titanium? I don't think it will rust. It is light and strong.
We have "offcuts" at work which are just the right size for these.
Not big enough for caliper brackets though.

[macspring]

Nylon is a very bad choice for bushes, it is hygroscopic, it will absorb water and expand when it gets wet and as it is pressed in to a metal surround that will not give it will thus indent the bush crushing it beyond it's elastic limit, then when it dries out in summer on a hot day it will shrink and end up loose and rattle about.

Does this mean that Super Pro and Powerflex and the like are not made out of Nylon, but something else which is more suitable ?

Thanks.

[terrybullwon]

Does anyone want a set made of titanium? I don't think it will rust. It is light and strong.
We have "offcuts" at work which are just the right size for these.
Not big enough for caliper brackets though.

Now your talking

[rs2coupe]

Now your talking

Yes please:mischeif:

[BRY]

I think that AndyP has a set of bushes so I'll measure them up unless there is a drawing available?
Alternatively I could send the "scrap" to Bambridge if he wants to use some inserts machining titanium.

[quattrostyle]

titanium would be cool

[driftin jo]

Does this mean that Super Pro and Powerflex and the like are not made out of Nylon, but something else which is more suitable ?

Thanks.

They are made from polyurethane.