114 replies to this topic

[pcmanning]

2 Channels - applies/releases brakes to wheels together when a slip detected Front Left with Back Rear and Front Right and Back Left. 4 Channels - applies/releases brakes on each wheel independently. IIRC some of the systems will also attempt to play with the brakes on other wheels as well to try and prevent the car yawing/spinning etc. Does the 111R have this level of sophisication? Anyway, you may be able to just replace the module, but I don't know if there are more sensors/different needed or whether any of the other "plumbing" is different. I'd so love Vauxhall to produce a final run special - a "VXR GT" - so I could have some my ier options on a VXR (Touring Pack, Road bias (but adjustable) Suspension + Tyres, CD, nice sliver! alloys... + 4 Channel ABS) And if they were being really nice a factory approved (and warrenteed) Tuning pack (remap + exhaust!) Paul

[kipper]

[quote name='pcmanning' date='Mar 15 2005, 11:21 '].

I'd so love Vauxhall to produce a final run special - a "VXR GT" - so I could have some my ier options on a VXR (Touring Pack, Road bias (but adjustable) Suspension + Tyres, CD, nice sliver! alloys... + 4 Channel ABS) And if they were being really nice a factory approved (and warrenteed) Tuning pack (remap + exhaust!)

Thanks paul, better undersatanding now.

Totally agree with the specs for your VXR GT.

[cyberman]

Eventually, I'd like to get hold of a wider rear wheel and try 235/45 or 235/40 tyres to restore the balance.

Gary

I thought the original problem was the back worked too well? Now you have the front working you feel a strange need to return to the original balance?

Anyway thanks for the insight into tyre choices. Its just that I am in the throws of converting hubs / wheels and was wondering about the "best" rubber.

A048R seems well regarded by most but I see an A039 on the Elise Parts web site for the Exige. It has quite different tread pattern which looks to me like it might shift water very well.

The only information I found suggested that the breakaway was more difficult with the A039. The same Elise user was raving about Colway Traxstars as a good fun trackday tyre with very good wet characteristics. Also cheap. However the Colway agent in the UK no longer imports the TraxStar so thats out.

Maybe there is no alternative to another set of wheels and to experiment. Messrs Yokohama and Toyo and .. are going to love me.

Reagrds - Ian

[garyk220]

I thought the original problem was the back worked too well? Now you have the front working you feel a strange need to return to the original balance?

I've always been happy with the balance of grip on the faster bends. But from my first track day it was clear that, in the dry, the car needed more front end grip for braking and the slower turns - hairpins and chicanes. Which is why I've gone for the wider front tyre option.

Mine already oversteered in all but the slowest turns (one of JTs Hockenheim movies shows it quite well as he followed me into the fast right-turn before the Sachs Curve). It rarely required any steering input to correct, but the rear was moving around enough to let you know the tyres were on the absolute limits of grip. Maybe I just got a good one straight out of the box... or a bad one, depending on your opinion of oversteer at 120mph Hence the comment about restoring the balance with slightly wider rear tyres.

An alternative approach would be an adjustable rear wing to remove the aerodynamic rear lift in higher speed bends and restore the balance of the car, but again the competition Technical Regs preclude aero modifications in the class I've chosen. The Projekt Opel Speedster Turbo has given me a few ideas to work on for the moment and stay within the class regulations.

[Richiemouse]

Remind what the advantages of elsie hubs/speedlines over VXR wheels are?

[garyk220]

At least 4kg saving in unsprung weight on each corner is the main one.

[Richiemouse]

Is that because the hubs are lighter?

[garyk220]

Hubs are approximately 1kg lighter but the main weight saving is the wheels. Approx 7kg front and rear compared with around front 10kg and rear 11.5kg standard (IIRC). VXR Speedlines are around the same weight as the standard VXT wheel. The S2 Exige wheel (standard or lightweight option) is also an option if you don't like the look of the Speedline Turini.

[2-20]

The SSR comp is also a weight saving option with these hubs:

http://www.puresport...hp?threadid=123

[calbee]

For the lucky ones who have access to the 16/17" wheel, there seem to be a hit on the hoosiers tires for the elise.

They look really stunning, and I can just pray one day I could have a drive on them.

Just wonder how long do we still have to wait for the OZ wheels to come?

click >>Here<< for details (scroll to the bottom).

The AD07 is also a Very big hit in my country(asia), as they are only a margin slower than 048 but much better on the wet, and more durable as well.

Edited by calbee, 15 March 2005 - 02:34 PM.

[cyberman]

The SSR comp is also a weight saving option with these hubs:

My goodness, its not only a weight saving option its also a money saving option too. £745 a set plus shipping and duty as against £1268+VAT for the forged Exige S2. And they are lighter at 5.5 kgs and 5.9kgs respectively.

It makes 2 sets affordable. I have emailed the guys to see if they have stock and whether 2 sets gets a discount I will check with FedEx and work out whether the saving on tyres justifies shipping them too.

The manufacturer's website is >clicky<. It wasn't working when I tried to reach it.

Have you also seen the Dymag wheels (and website)? these guys are a. UK based b. make a Carbon / Magnesium wheel. >clicky<. Navigate to the news page to check the new wheels out.

I don't suppose any of us can afford them but they look absolutely stunning. I have emailed to at least get the details of what they can do for us.

Edited by cyberman, 15 March 2005 - 06:48 PM.

[Thorney]

I persoanlly wouldn't use a mag or CF wheel on the road, they can't cope with the roughness and don't react well to salt. OK for track only though.

[GF ORCE8]

Hi vx-racers, could you ßplease give me the Part Number of the hubs? @SSR there were rumors, that the company ran out of money!!! And another point is, that the offsets are i think not ideal for our VX Michi

[cyberman]

I persoanlly wouldn't use a mag or CF wheel on the road, they can't cope with the roughness and don't react well to salt. OK for track only though.

Errm, I have used mag wheels on the road and, if properly sealed, there is no problem. I ran MelMags on a Lotus living by the sea for 3 years with no bother (when all about me rusted).

Carbon Fibre is something new and I am not sure we have enough information about that as yet. Certainly they should be chemically less reactive: I would think the main issue has to be delamination under impact stress.

I have asked the manufacturer these questions in more probing terms. I have also asked for a Failure Mode Analysis and the other necessary information on which to make a formal safety assessment.

I still think they look absolutely blooming amazing... Even if I have to crack test them every month I might go a set of Dymags (if I can afford them).

Kind regards - ian

[Foxy]

I have asked the manufacturer these questions in more probing terms. I have also asked for a Failure Mode Analysis and the other necessary information on which to make a formal safety assessment.

They're sure going to love you!

[cyberman]

SSR wheels. I had a reply from Tyre Rack in the USA: a. they have stock b. they ship to the UK c. US$1610 a set delivered (i.e. £847). d. Delivery 7 - 10 days via FedEx. e. They like Amex best. Subject to a few other checks and due diligence I might order some of these to try. Kind regards - Ian

Edited by cyberman, 15 March 2005 - 09:35 PM.

[cyberman]

They're sure going to love you! 

Foxy

If they are any b. good they probably will. Nothing a chap likes better than showing off he has an amazing product AND he has covered all the bases.

Wheels are where the action is and these look startling. If they are as light and strong as they need to be, well its only money, isn't it? Head down, cheque book up!

Regards - Ian

Edited by cyberman, 15 March 2005 - 09:25 PM.

[cyberman]

And another point is, that the offsets are i think not ideal for our VX

Michi

You are right the fronts are ET31/32 (depends on website) and rears ET36/36 (ditto). Rears are OK, front should be fine but a 5 mm spacer might not do any harm either.

Regards - Ian

[Thorney]

IMO I'm still going for the Oz's - made for us in correct without the need for spacers (which I'd rather not run espececially on a track car). But seeing as we're still waiting for the Oz's I guess other ideas are always optional. One reason why I won't import from the US on things like wheels is the aftercare, 3000 miles is a long way to get a replacement under warranty All IMO of course.

[cyberman]

IMO I'm still going for the Oz's

Thorney

It is, as much as anything, a question of information.

You have not felt comfortable discussing wheel specifications or been able to make effective committments on delivery or price. Your reasons for this seem decent enough - essentially not wishing to mislead.

Unfortunately, I for one, am not comfortable waiting in an unstructured fashion. You should note that I work in an industry where "vapourware" abounds and nothing is "real" until you can test it. One *might* give credence to an idea that is formally described and which has a development timetable with milestones which can be assessed. Otherwise its safest to ignore it and use something else.

The VXT is a hobby for me. I don't necessarily apply business criteria to developing it. But, in the terms I use to assess an opportunity, the OZ project hasn't got better over 4 months. I've got to the point where the wheels must be done as a complement to the other suspension changes. I need to resource that now. Thats why I look around to see what else may be available.

Of course, if you can say the wheels will be here on 5th April, they are such and such a spec, I am taking money which will be refunded if they don't meet spec or dont' arrive, then my cheque is on its way. Otherwise, and with great reluctance, one needs to experiment elsewhere.

Kind regards - Ian