rortys cortina uprights will be available soon cost is looking like £100 ish at the moment with the alloy hubs and bearings a further £75 this is for a set


please could anyone who is interested please indicate this as the prices i have been quoted are based on 25 sets, if the demand is there and we can order more then the price will come down for everyone

best regards

marc

Are cortina uprights the same as capri items or possibly interchangeable?

Capri's run on McPherson struts, so totally different from Cortina double wishbone ones

What parts do they use for brakes etc. and would they be a direct swap for a car already fitted with Cortina uprights and book wishbones?

they use the cortina caliper and disc assembly or raceleda setup i.e alloy calipers and hubs etc, so are a direct replacement for your existing ones so book wishbones need no mods

best regards

marc

[Edited on 17/11/05 by marc n]

[Edited on 17/11/05 by marc n]

Is there a weight saving on these uprights?

How much lighter are the alloy hubs?

Total saving = ?

me too, im very interested but would be interested in the rough weight savings. Also, if you could dig out the raceleda weights to compare to! cheers marc.

Marc, you can put me down for a set

ATB Dan.

quote:

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Originally posted by marc n
the alloy hubs and bearings a further £75 this is for a set

best regards

marc

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I don't understand what this means.
I'd be interested in some subject to seeing them in the flesh.

Marc, do you have pictures for these and the hubs? how do the designs compare to the raceleda items?

These sound great as i'm looking into a BEC next.

Many thanks Dan.

The components are made of a high quality laser cut steel and reinforced at stress points..

They wont be as light as the raceleda items and are designed for people who want a lightweight cortina upright without the expense of raceleda or trawling breakers for almost non- existent cortina items..

(and would prefer cortina than sierra)

The stub axles are the same as the raceleda items (or very similar) so the repeated stress factor reall only applies to the main structure itself, which I believe will be at least as good as the components its mounted too...

Marc is at exeter until monday so he wont reply until then...

I have seen the item and believe they are a superb addition to the range, and ideal for those who want better than current sierra donor parts, and move the car further towards the possibility of a new registration...

quote:

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Originally posted by Dave Ashurst
Are these uprights checked OK in fatigue?

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quote:

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Originally posted by Syd Bridge

quote:

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Originally posted by Dave Ashurst
Are these uprights checked OK in fatigue?

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The thought crossed my mind when I saw the picture, but thought better of it as I get into enough strife here by saying what I think. (As opposed to thinking before I say..)

There's a few stress raisers too many, laser cut sharp corners and all, and with all that welding.....???
But, with the low miles the average locost would do, does it matter?

What I can say without risk of contradiction whatsoever is; They would never be allowed on the road in Australia. No engineering signatory would risk his future or insurance.

Syd.

[Edited on 19/11/05 by Syd Bridge]

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Rorty,
Mark has been in the process of moving to sunny Cornwall. He's got that over and done with but has no working broadband connection. He didn't realise we make do with baked bean tins on string down here still.
He'll be sorting things out on the upright front soon.
Ian

Are we confusing Marc from MNR with Mark from Triton?

I hope not,although they are both short.
All I know is that Mark Triton bloke hasn't been able to do anything with the files as yet and Marc N has judging from his posts.

Ian

Aha! I thought we were at cross purposes. .
Mark from Triton has spoken to me about the uprights, it's Marc N from MNR that I haven't heard from.

Post the pics your design on the Ozclubbies site, Rorty, and let us all see what the outcome is. If you're game. You know the truth as well as I do.

Everyone in Aus is looking for a cheap and light upright, if yours is ADR friendly, they'll surely tell us all.

I would also like to find out the weight...but tentatively put me down for a set of the uprights/hubs.

Thanks, -sm

hi all

the drawings are due back to me mid week for the components, brief spec is 8mm main body, steering arms, and brake mount lugs, the balance of gussets etc are in 3mm, these are specs for the road cars
on my own racecar i will be going thinner still
re fatigue issues, many areas are radiused, i certainley would not be worried re longetivity ( look how many manufacturers including ourselves use a steel fabricated rear upright ) where there are high levels of not just compression but also large loads of torque transfered through these,

steel uprights are not anything new single seater hilclimers and racecars have featured these for many years with great sucess, even the primera touring car i drove had steel fabricated uprights ( admittidley in 4130 but they where from 1mm and transfered 26obhp and supported a 900 kg car at 3.5 g without any concerns

incidently a similar version of this upright is extensively used in autograss racing to great effect where heavy contact and large forces are applied

re weights till i get the scetches back and do some rough calculations cant confirm but would imaging like for like with cortina, the main reason for us doing this is we personally do not want to use the sierra upright and realise that not every ones budget can stretch to raceleda uprights, and cortina are rare as rocking horse poo,

hope this covers most questions, we are very busy in the run up to christmas so may not be on here to frequently, but will try my best to keep eveyone up to date

best regards

marc

I'm not gonna argue this. It'll end in abuse and tears. When these get on the road it will be the same as the 'Wishbones Failing' thing. (After which, most manufacturers wishbones quietly changed, for the better.)

The main piece of 8mm is not a problem. There are a few critical areas where the stress concentrations WILL end up with bending and broken welds.

Comparing road use with the track is not valid. The grasstrackers using these type of uprights are Specials, and the front corner weights are probably only 25% of the Locost.

And failures on track because of minimal design are tolerated, nigh on expected. Damage is minimal, and the safety gear in all the cars protects the individuals. Not so on the open roads.

Marc, I just hope you have Product Liability Insurance, and you have a copy of Rorty's Professional Indemnity Insurance, along with the relevant homologation testing, which as a manufacturer/seller you would need, for these to be used on Public roads.

Before you all jump down my throat, I deal with homologation of competition parts weekly, and those uprights would need some serious but minor alterations to get through.

The 8mm bit is passable, but the rest needs proper input from a suitably qualified professional engineer.

If you're a member of STATUS, get them to test, and advise of any changes. That's what they are there for. The safety and furtherance of the Kit Industry.

Syd.

Homologation of individual parts on a Kit car is not required.
That is why we have the SVA testing (Single Vehicle Approval).
If everything was Homologated, we wouldn't need SVA!!

Hi Marc, any news on those uprights? Photos, weight, and an eta would be great.

BTW, i am from the US, but i will be in the UK from Dec 11th - 13th, so would love to be able to pick up a pair (or 4) w/ the hubs....let me know.


Thanks, -sm

I'd be interested in a set of these subject to seeing the pics and if they will fit my brakes.

Carnut

Hi Marc,
Some pictures would be nice :-)

Cheers

Paul

sorry for the lack of updates all, we have been increadibly busy, realistically the uprights will not be available till the end of jan due to high volumes of orders, we are currently altering and tweaking a few things and should have some development ones fitted to my car before christmas for some track testing ( read into that destruction testing with me behind the wheel )

Are these going to be standard dimensions or tweaked for better geometry?

both options will be available ( direct cortina replacement first )

best regards

marc

Hi Marc.
Depending on price (175 ish for a pair seems fine) I may well be interested (I'll confirm with the whole kit) as it could solve my indecision between the cost (Sierra) and weight (raceleda)
Joao Caldeira

Ye Gods, *please* will someone put a picture up!

Thanks,
James

and weigths, please! (and Sierras's to compare)

Joao

Been about a month...about time for another update, Marc???

sorry guys we are experiancing our busiest month yet
so the uprights have taken a back seat only just started today should have a fully working pair to take some pics of by the end of next week will keep you posted, we have slightly ammended the bracing / gusseting which has caused some delay

Joao, the sierra hub and upright (w/ bearings, etc) weighs about 13lbs (i haven't weighed them separately). The brake caliber and rotor weighs about 23lbs. So, each side weighs about 37-38lbs (w/ bolts and fittings also)...pretty hefty.

including wheels and tyres then you might have 35kgs hanging on each corner!

32 kg's is what I measured mine at - cortina uprights and brakes, 15"steel wheels. No mudguards or brackets etc

Cheers

Fred WB

£500 per corner would probably take that down to 20 odd kgs. That would be STMs billet mag wheels (3kgs) average tyres (6kgs) and the raceleda full set (im guessing 11kgs all in for that, anyone know for sure?).

The weights I posted for the Sierra stuff is definite.

However, if i was to speculate on the cortina stuff, i would go w/ the base cortina uprights, and then put on some compbrake aluminum hubs, which can be got for 100GBP (maybe cheaper elsewhere...didn't Marc say his were 75GBP?). W/ some mildly inexpensive aluminum calipers (source anyone?), you could probably go from the sierra 37lbs (per corner, w/out wheels) to ~25lbs. But, as i said, i am guessing on the cortina stuff, can someone please confirm.

Cheers, -sm

[Edited on 19/1/06 by scotmac]

Looks like the cortina aluminum calipers can be got from compbrake for around 220GBP/pair (b16's) or from wilwood for around 200GBP/pair (m16/powerlite, 120-8729). Someone *must* have them for cheaper...

Any Updates?

hopefully over the weekend i can post all pics and prices, when bought as a kit we can do great deals on the raceleda hubs and calipers hubs are i believe the leightest around at 0.9 kg and you can have them in gold , silver, red , and black anodised,

best regards

marc