Tyres... now don't be stupid.. that will never work..

[Victor Meldrew]

"water under the bridge"

[fd]

Jeez . . . put the handbags away

Today I found out a work mate and really good guy passed away last week and I never knew as I'm on holiday . . . another good guy falls to prostate cancer . . .

We also toasted the rental van today getting stranded in a noisy motel in the arse end of nowhere in California . . . but that's no biggie, relatively . . .



So I thought I'd catch up on some SE . . . I see the chaos remains

Anyway . . . if you are desperate for AVON rubber BMTR (http://www.bmtr.co.uk) are the place to buy them from, there is no decent Scottish dealer - do NOT buy from IF Motorsport - you have been warned . . . Ronnie can get them but at no discount (due to Avons fixed price policy) and probably slower than BMTR (next day for me every time) . . .

You may want to think about compounds also . . . us caterfield people use A24, they last 1/2 a season for me at best . . .

Fd

[Dominic]

Must be the Ape's time of the month again,... he does this every so often.

[Noops]

Must be the Ape's time of the month again,... he does this every so often.

[robin]

Smaller rolling radius, give same effect as an ultra close ratio box.

No it doesn't.

Cheers,
Robin

[kevham]

Smaller rolling radius, give same effect as an ultra close ratio box.

No it doesn't.

Cheers,
Robin

It's more like changing your final drive ratio, John.
Doesn't bring the gears 'closer' but lowers the overall gearing which improves acceleration at the price of overall top speed (not an issue on sprints).

Other benefit of smaller wheels/tyres is the potential reduced unsprung weight and potentially cheaper tyres. 14" wheels with 195/45 section tyres on my MX5 are 8% smaller than my 15" wheels and around 1-2kg lighter per corner. But the range of tyres available is very limited.

The Compomotive's aint the lightest wheels in the world though - have you asked what they weigh? I reckon a decent 15x8" rim should be less than 5kg. I've got cheapish 15x7" that are 4.9kg.

I'm looking for a set of wheels for the VX - thanks to Vauxhall's bizarre design decisions, choice is very limited unless I go all out and change to Exige hubs and alloy belled discs (too much money - I'd rather spend it on events). Team Dynamics Race Pro 1.2 look the best bet for me - slightly lighter than the Compomotives and about the same price. That will allow me to get some list 1b tyres.

[Victor Meldrew]

Found all the info I need, and some good pointers, Thanks Robin, Fd and Kev..

Still looking around for lighter wheels, the compomotives are a bit weighty but you aint going to bend them.

[Noops]

Found all the info I need, and some good pointers, Thanks Robin, Fd and Kev..

Still looking around for lighter wheels, the compomotives are a bit weighty but you aint going to bend them.

Victor produces Elise Half Track Shocker

[Sanjøy]

IIRC there were some techno mag 340r wheels on fleabay. They any use to you?

[robin]

If you get the 340R wheels you need to fit longer wheel studs; depending on the state of your bearings and flanges, you may need to replace all the bearings in the process (as the flanges need to pulled from the bearing in order to press out the old studs and fit longer ones). I think the eliseparts flanges come with longer wheel studs by default, so if you do end up going that route, might be worth doing them at the same time.

Cheers,
Robin

[Victor Meldrew]

[quote="robin"]If you get the 340R wheels you need to fit longer wheel studs; depending on the state of your bearings and flanges, you may need to replace all the bearings in the process (as the flanges need to pulled from the bearing in order to press out the old studs and fit longer ones). I think the eliseparts flanges come with longer wheel studs by default, so if you do end up going that route, might be worth doing them at the same time.

Cheers,
Robin[/quote]

Spotted the 340 wheels, no use though as the main aim is to run ACB10's and they only come in 15"

The front flanges are the Elise parts steel with the longer studs so I don't expect any issues on the front. The front wheels are a standard size that they have make regularly for the Elise.
The rear end is a special size not normally made for the Elise and will be dependant on the offset. I may need to use the Elise parts 25 mm spacer kit dependant on the wheel castings available, the casting obviously effects the wheel offset. The 25 mm spacer bolts onto the standard studs with no problems, and the alloy spacer can be fitted with slightly longer studs if needed without dismantling anything else.

[robin]

Hi Victor,

The last time I looked at the EP flanges, the long studs had to be supplied cut down for standard wheels/wheet nuts. So unless you've got drilled out wheel nuts, I think that even though you have the EP flanges, you may not have the longer wheel studs fitted, if that makes any sense at all?

Agreed the 340R wheels no use for running 15" rears; was really posting that up for the benefit of anybody else reading the thread and thinking they might go looking for those 340R wheels.

Cheers,
Robin

[Mikie711]

Vic, better check the blue book. Think I read somewhere that wheel spacer aren't allowed, cant remember where and don't have a copy with OS.

Could be wrong but worth a look just in case.

[Victor Meldrew]

[quote="Mikie711"]Vic, better check the blue book. Think I read somewhere that wheel spacer aren't allowed, cant remember where and don't have a copy with OS.

Could be wrong but worth a look just in case.[/quote]

Will check that, I think your right that it is in the regs somewhere but I don't know what classes it applies to.


[quote="robin"]Hi Victor,

The last time I looked at the EP flanges, the long studs had to be supplied cut down for standard wheels/wheet nuts. So unless you've got drilled out wheel nuts, I think that even though you have the EP flanges, you may not have the longer wheel studs fitted, if that makes any sense at all? :-)

Agreed the 340R wheels no use for running 15" rears; was really posting that up for the benefit of anybody else reading the thread and thinking they might go looking for those 340R wheels.

Cheers,
Robin[/quote]

They certainly look longer than the rear studs.. whether they are the full length long studs or just a bit longer than standard I don't know. I will need to ask compomotive about stud length and nut style. I think the nuts will be as the Exige, i.e a taper face rather than the Elise style rounded face. Something I didn't ask when I was on the phone.

[roadboy]

You will not need longer studs for the Compomotives. They fit fine on standard hub flanges.

HTH

Dan