Want to sprint next year...

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Richard Price
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Pete,

185 and 215 ZZRs would be fine on 6 and 8" wheels.

Why do you need a 2nd set of wheels? What tyres do you currently have?

If you're planning on driving to events ZZS's may be a safer compromise. If its wet, ZZS's are significantly better than ZZRs, but in the dry, I'd say the difference is very small.

CharlieC
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Watch out, Andy. It looks like there's some competition is coming to Class 4 (already Hans device ...) Wink

Regards driving to/from the event, I have done this for a couple of seasons in my SV (often with a companion) and we have worked out a good system for packing (with a fair bit on my passenger's lap when there's two of us). It's fine and feels great to be doing it in a 'Corinthian' spirit, which was after all, the idea for the Lotus 7 in the first place.

It also lessens (but doesn't eliminate) the risk of driving over your own bonnet ... sorry Andy, couldn't resist 

AG2728
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It also lessens (but doesn't eliminate) the risk of driving over your own bonnet.

How cruel of you. I was trying to forget that incident. Silly

CharlieC
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Rofl only because you went faster than me in the final event!

Hope you have a super Christmas and I look forward to seeing you on track next year.

Best, Charlie

AMBO
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Greetings all!

Am looking at joining in for 2021! 

Road legal 2001 car with 225bhp, so assume class 4.

It has the roll bar with one diagonal brace which I understand is ok for club trackdays, but advice on whether it's ok for this please? Have got a petty strut to fit...

1B tyres.... although having looked at the regs I'm a bit confused as somewhere it implies that and 1A, 1B or any road legal tyres?

Need suitable helmet, suit and gloves as minimum. Have got a timing strut.

Pay the £30 registration fee and acquire a MSUK RS Interclub licence.

Have just got a trailer and will sort a tow vehicle...

Anything else please?

Thank you, Nick

Richard Price
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Nick,

Yes. If your car has 225bhp and is road legal then it will fit in class 4 as long as your tyres are included in either list 1a or 1b.

These lists are included in section L of the MSUK yearbook.

See here :-

https://www.motorsportuk.org/wp-content/uploads/2020/12/motorsport-uk-yearbook-2021-p210-218-permitted-tyres-l.pdf

And the full yearbook here :-

https://www.motorsportuk.org/wp-content/uploads/2020/12/motorsport-uk-yearbook-2021.pdf

What tyres do you currently have fitted?

 

Yes. You'll need to have the petty strut fitted with your FIA roll bar.

'sounds like you're otherwise OK

Simon.Rogers
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Richards points are correct but I will just add that the Tyres MUST be on the list.  Not all Road Legal tyres are on the lists.

A road legal tyre may be in list 1C or even not on the list at all.

www.meteormotorsport.com
Comp Sec
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In fact it is any E marked road tyre and list 1a and 1b, this is what the regs say:

"Tyres to be any road legal E-marked radial tyre or listed in the current Motorsport UK General Regulations Permitted Tyres (L) Lists 1A and 1B"

The tyres on your car now are likely to be on List 1B and it's probably a good idea to use what you have when starting out. Richard gave some good advice in post #12.

The petty strut will need a manufacturer's homologation sticker. If it doesn't have one please ask for further advice.

Sounds  like you are ready to go. Please feel free to contact me if you need any more help.

Hope to see you at some events next year.

Graham Howard - Competition Secretary   Northampton Motorsport Lotus Seven Club Speed Championship 2021    
AMBO
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Thank you gents for the replies!

Currently it's fitted with CR500's, 175/55R13 and 205/55R13's. I will check and see if they are E marked and if so, my understanding is that they will be ok. If not ZZR or ZZS in 185/55 and 215/55 seem popular, or any other road legal E marked or 1A or 1B tyre...

The petty strut is a used item which hasn't landed here yet! It's allegedly a Caterham part, but I don't remember seeing any stickers on it, in the photos...

Does the roll bar look like an FIA item? Not convinced myself, but would like a definitive answer! Doesn't have any stickers therefore do I need to add...https://caterhamparts.co.uk/track-day-bars/2728-roll-over-bar-fia-s3-l-a-rhd.html

Thanks Nick

Richard Price
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Nick,

Your CR500s will be E marked and are included in list 1b so they should be OK.

Your roll bar is the earlier FIA bar, where the homolgation label will have originally been fitted to the roll bar rather than petty strut. The FIA bars were made by "Arch Motors" who should be able to supply a replacement if you don't have the label.  The later "track day" roll bars (as in the link you show) are made by "Caged". The two roll bars use quite different petty struts which are not interchangeable.