I just called rally design about their PB122 poly bushes.....

Dimensions I was given were 46mm overall length, 28.8mm diameter, 1/2 inch bore.

Now I cant help feeling that this bush must be a modern replacement for some nasty old rubber bush from an imperial car.....

hence the dimensions should have been:

Length: 1 13/16
diameter: 1 1/8
bore: 1/2

This being the case, what do I want to be using for housing tubes?

1 1/4 OD 16swg is 28.498mm ID
1 3/8OD 10wg is 28.423mm ID

Anyone used these bushes and know what size stock I need to make the housing tubs from?

Cheers

wouldn't that 0.4mm (or whatever it is) leave too much room for rattling about? or can something like sikaflex be used to take up the slack?

Wouldn't it be tight rather than slack if the the bush is bigger than the hole so to speak!

I have 3ge wishbones which use the same sized bushes as the rally design bushes I can measure the housing tubes properly later when I get back home

Sounds like the 10swg one would do the trick

Cheers
David

Yeah they would be tight rather than loose. The guy was obv sat at a desk with some calipers, so whether they were 100% zeroed, or the bushes are slightly oval or whatever I dont know, cant help feeling they must be imperial dimensions.

If you could measure your tubes that would be great!

I reckon the 10swg tube too, less tendancy to oval when one welds to one side of it, and less likely to cut into the shoulders of the bush under braking and acceleration. Now all I need to do is find half a metre of it!

[Edited on 3/12/09 by alistairolsen]

sorry, yeah you're right. i read that wrong

i read that over and over 3 times to check what i was saying, and i couldn't find anything wrong, but you're right. sory

If they are the same size as ours, then they sould be 28.5 or 1-1/8" where the fit in to the bush tube.

We supply these seperatly if you require some.

http://www.3gecomponents.com/templates1/view_product.php?product=1840&site=63&department=116

Kind regards

John

[Edited on 5/12/09 by 3GEComponents]

They look good, what length are they and how much would P+P be for 8 of them?

Cheers

Alister, John the rallydesign bush set is 2mm longer than the 3GE setup being 46mm and not the usual 44mm so this will need to be accounted for otherwise thay will be short


Mine are:
33.7 od
2.6 wall thickness
28.5 id
35 long

these were supplied by John at 3GE

Cheers
David

[Edited on 5/12/09 by Minicooper]

I know there is a 2mm difference, thats why I was asking about the tube lengths, as Id planned on removing the 2mm from the smaller part of the tophat.

the raldes bushes have a 4.5mm shoulder, so 35mm tube, plus 9mm of exposed bush is the 44mm book dimensions to fit my brackets.

[Edited on 5/12/09 by alistairolsen]