Hi All

Has anybody used single seater uprights on their build?

I'm just starting another build and I'm thinking of uisng Swift single seater uprights at the front and, possibly the rear if I go IRS. I picked up a ful set of uprights from a Formula Renault as spares for my single seater but it seems daft not to use them. They feel less than half the weight of the Cortina front end!

I can get calipers easily and it won't be roadgoing so a handbrake is not needed.

The PCD is quite small (around 95mm) but I could easily convert the hubs to take centre lock wheels ( I have 8 split rims).

Any thoughts?

Fronts...
Rescued attachment uprights.jpg

Rears
Rescued attachment rear uprights.jpg

More rears
Rescued attachment SNV30430.JPG

Any thought ?

I would certainly prefer something pucka like that - as would most people I reckon.


Are these cast aluminium ? i.e. not magnesium ?

If they are, it's an obvious yes IMHO.

Hi zilspeed

I think they are cast aluminium. I had to helicoil the caliper bolt holes on my single seater but that's not exactly a huge issue and won't take me long! I haven't decided on whether to go DeDion or IRS yet - I'll use the rears as well if I go IRS, although the weight saving of DeDIon appeals!

Wyn

I've got some unmachined magnesium rears going spare

On the front uprights, the bottom fixing is obviously for a rose joint, but how does the upper attach to the wishbone and provide steering articulation? Another rose joint used "sideways"?

MikeRJ

You are right - the top uses a rose joint in the vertical plane - there's a rod / bolt running through the gap and this has spacers on it to hold the rose joint in the correct position - these uprights are identical to the ones on my single seater so I'll take a picture which should explain it more easily!

Wyn

Like this
Rescued attachment SNV30449.JPG

Right, I guess it has rocker arm suspension, so the spherical joint needs to be in that orientation to take the suspension loads? Do you have the upper arm to go with the uprights or will you be fabricating that yourself?

[Edited on 15/1/08 by MikeRJ]

Yes - the single seater has rockers and inboard dampers but we'll just use 'normal' wishbones on the '7' with a rose joint threaded into the end of it.

Wyn

I've just weighed the Cortina uprights and the single seater ones -

Cortina with disc and caliper - 15kg
Single seater with disc and caliper - 8.5kg.

Easy decision to make I think!

Wyn

quote:

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Originally posted by lsdweb
Yes - the single seater has rockers and inboard dampers but we'll just use 'normal' wishbones on the '7' with a rose joint threaded into the end of it.

Wyn

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quote:

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If the shock is mounted onto the lower wishbone won't you be putting all the suspension loads the "wrong way" through the lower rod end?

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