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Author: Subject: Front Uprights...
scootz

posted on 14/7/10 at 01:47 PM Reply With Quote
Front Uprights...

I need front uprights...
I have a blank sheet...
I can go for anything I want...

What do I choose?

Is there any benefit to using Cortina over Sierra? Is there anything else that knocks spots off both of them?





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AdamR

posted on 14/7/10 at 01:48 PM Reply With Quote

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zilspeed

posted on 14/7/10 at 01:51 PM Reply With Quote
You didn't get single seater ones with the car ?
They weigh a fraction of what a road car one does.

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scootz

posted on 14/7/10 at 02:02 PM Reply With Quote
Not the ones I got Zil... made of stone!

The front corners are the only bit of the car that concerns me... I'd like to simplify it with 'locost' type wishbones, uprights, etc.





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nick205

posted on 14/7/10 at 02:37 PM Reply With Quote
A set of ally ones from Rally Design with Wilwoods etc would seem the obvious choice...? Cortina geometry IIRC.

Rally Design also sell some steel uprights (Pro Spindle?) which look like they might be quite light and versatile, not sure how appropraite the inherent geometry is though.

What do Caterham and Westfield use? Do they have their own design?

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RAYLEE29

posted on 14/7/10 at 02:43 PM Reply With Quote
Adam r love the pic.
some say mx5 are better than sierra
read an ebay add yesterday claiming cortina are better than sierra although I have no idea why they think either are better.
think burtons do some brand new sierra ones
i think you can get alloy ones from rally design guess it all depends on how much you want to pay and how fussy you are going to be about them personally i uesd sierra ones cause that was what my book used and they came with the donor.
Ray

[Edited on 14/7/10 by RAYLEE29]

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hughpinder

posted on 14/7/10 at 02:55 PM Reply With Quote
Caterhams used to use triumph spitfire ones...

Regards
Hugh

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liam.mccaffrey

posted on 14/7/10 at 02:57 PM Reply With Quote
I have a set of cortina mk3's for sale and a set of mx5s





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phelpsa

posted on 14/7/10 at 03:09 PM Reply With Quote
From what i've been reading / heard:

The cortina upright is ok but the scrub radius is far too large really.

The sierra item is better but the whole setup is very heavy.

Rally Design ones are no lighter than cortina really and still have the bad geometry.

Wilwood ones are good but don't come in common UK PCDs.

MX5 ones are ok but again fairly heavy and have large KPI.

No one has much experience of fiddling with caterham ones, people assume they must be good. Based on triumph herald...

Best option... make your own to suit your purpose!?

Edited at the request of phelpsa

[Edited on 17-7-10 by Fozzie]






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MikeR

posted on 14/7/10 at 03:11 PM Reply With Quote
i'd be very tempted with a triumph design - read up on why Colin Chapman decided to stop using them on his formula 1 cars before you do.

Caterham have an upgraded version they use - these are what i'd look at.

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matt_gsxr

posted on 14/7/10 at 03:18 PM Reply With Quote
what about the Wilwood uprights from Rallydesign. 135 for a pair including steering arms, although you need some other bits and bobs (like hubs and bearings) which they also supply.

Should be strong enough (all those American ambulance chasers should ensure that) and appear to be reasonable weight (from Wilwood site).

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mcerd1

posted on 14/7/10 at 03:35 PM Reply With Quote
quote:
Originally posted by scootz
I need front uprights...
I have a blank sheet...
I can go for anything I want...

What do I choose?


just get Sid to make you a set of titanium ones to your own design - how expencive could it be.......

[Edited on 14/7/2010 by mcerd1]





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iank

posted on 14/7/10 at 03:40 PM Reply With Quote
Mini uprights are good, can still buy them new and you can get aluminium versions if you're feeling flush. To use them without driveshafts just take the balls and cage out of the CV (can machine them down if you want to save weight).



[Edited on 14/7/10 by iank]





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scootz

posted on 14/7/10 at 04:29 PM Reply With Quote
Lottery Win Linky





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StevieB

posted on 14/7/10 at 04:32 PM Reply With Quote
Midget?

You can get adjustable trunnions from Peter May Engineering, and I reckon they can be adapted to take rose joints top and bottom.

Also, the steering arm is bolt on, so could easily be re-fabricated for ackerman angle etc.

Finally, the steering arm is mounted at the top rather than bottom, which will probbaly suit your single seater better.

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phelpsa

posted on 14/7/10 at 04:37 PM Reply With Quote
Mk3 Mondeo rear hub units:

http://cgi.ebay.co.uk/270600382296

Annoying that they 5 stud, but it would be fairly easy to fabricate an upright to accept them to whatever geometry you choose. The bearing carrier provides most of the stiffness and I bet it's not THAT heavy. Certainly would work out lighter than a sierra setup. They're quite narrow (hub face to mounting face) so you can keep the scrub radius nice and low. Shouldn't be too difficult to remove the abs sensor.

I need to stop browsing ebay... :p






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big_wasa

posted on 14/7/10 at 04:52 PM Reply With Quote
quote:
Originally posted by phelpsa
Mk3 Mondeo rear hub units:

http://cgi.ebay.co.uk/270600382296

Annoying that they 5 stud, but it would be fairly easy to fabricate an upright to accept them to whatever geometry you choose. The bearing carrier provides most of the stiffness and I bet it's not THAT heavy. Certainly would work out lighter than a sierra setup. They're quite narrow (hub face to mounting face) so you can keep the scrub radius nice and low. Shouldn't be too difficult to remove the abs sensor.

I need to stop browsing ebay... :p





Ford fiesta is four stud and simlar sort of thing.

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MikeR

posted on 14/7/10 at 04:53 PM Reply With Quote
That looks really interesting - if you took a NK / MAC / MNR / any other seven rear hub and added on steering arm ........

hmmmm........

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phelpsa

posted on 14/7/10 at 04:55 PM Reply With Quote
http://cgi.ebay.co.uk/310227511331

VERY interesting....






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Neville Jones

posted on 14/7/10 at 08:20 PM Reply With Quote
The Wilwoods are the best option I've seen, and made for hotrods, so road safe and tested.

You get the Wilwoods, remachine the axle to take the RD ali escort hubs, and away you go. Alternatively, you redrill the Wilwood hubs to Ford PCD. Not rocket science.

None of the ali uprights from RD have any sort of proper test dertificates, and RD get a bit peculiar if you mention the fact to them.

Cheers,
Nev.

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scootz

posted on 14/7/10 at 08:28 PM Reply With Quote
I see RD do genuine Sierra ones... 90 for a pair with hubs / bearings fitted!

Linky





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austin man

posted on 14/7/10 at 09:41 PM Reply With Quote
contact Martin @ MK engineering he makes his own for his midi and the single seater he designed Im sure he would supply





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ghostrain

posted on 17/7/10 at 02:29 PM Reply With Quote
Seems the right moment to advise that Rally Design has advised a possible welding failure on the Raceleda/RMD style of ally upright. Rally Design have recently changed the steering arm away from the original fabricated arm(welded) to a drop forged design,although the failure has only occured on 2 vehicles with no damage they have made the offer to issue free of charge replacement arms,this offer applies irrespective of whether the upright assembly was purchased from RD or another retailer. All purchasers will be advised by post but as a discussion thread about uprights was started it seemed a good moment to advise the problem on this forum.This applies to all gold plated fabricated arms,black painted drop forged arms are to the latest spec and are not a problem.If you know of anybody who has this front upright assembly perhaps you could let them know. The problem appears to have occured on only 2 vehicles out of 178 uprights sold but as we have the replacement arms it seems sensible to make the change.
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scootz

posted on 17/7/10 at 05:42 PM Reply With Quote
Sounds like excellent customer service! Well done!

PS - Can I have a set for providing the 'vehicle' for making the announcement!





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Fozzie

posted on 20/7/10 at 10:02 AM Reply With Quote
As there is a safety issue going on here, with the 'gold coloured' Rally Design (issued/sold by them or others) steering arm, I have 'stickied' this thread for a while, in case people who have these, may have missed it ....

Fozzie .......Admin



[Edited on 20-7-10 by Fozzie]





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