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SPA SUMMER CLASSIC
Calendar: Historic Racing
Mike Bell
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27 Jun 2019 to 30 Jun 2019 06:30 to 17:00
*The times shown may change, depending on DST settings
Location: Spa Francorchamps

The now well established summer visit for several big UK grids.

Will include a CSCC race and the 'Mini 6hr' 3hr race saturday eve.
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Old 30 Jan 2019, 08:17 (Ref:3880573)   #16
zefarelly
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zefarelly should be qualifying in the top 3 on the gridzefarelly should be qualifying in the top 3 on the gridzefarelly should be qualifying in the top 3 on the grid
Well that's no bloody good for a Cortina!

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On a RWD car the radial will be more resistant to drifting, and maybe make the car understeer more.

I had considered a set for my road car TBH, its similar to the race car but an inch or so higher and a bit softer. It'd be interesting to see what fits on the Tornado as that will soon be the weapon of choice ( hopefully) although I'd be daft to commit to this race before its even running!
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Old 30 Jan 2019, 08:26 (Ref:3880575)   #17
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Unfair Your Honor! But yes, in a certain way slicks should be allowed in this period as many stated including Podd. I dont dare to say that if, for instance, using radial slicks with a pattern thread design……… No, impossible! But may be Podd can ask to use A048's if he has a huge stock.
With early period cars running in the same race, slicks on the later cars would be dangerous. Yokohama or similar less so, but they're still able to generate much faster cornering speeds.

It's interesting because I thought one of the reasons for allowing AO48s previously was because the Iberian Historic Endurance cars (that form quite a big proportion of the grid), ran on them. I've just tried to find their 2019 regulations, but nothing on the website. However, their 2017 tyre regs for Portimao are the same as Spa 2019....


So if those cars are on Avon ZZs or Dunlop crossplies in some form, I would suggest everyone will be.....
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Old 30 Jan 2019, 08:32 (Ref:3880577)   #18
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Well that's no bloody good for a Cortina!

I had considered a set for my road car TBH, its similar to the race car but an inch or so higher and a bit softer. It'd be interesting to see what fits on the Tornado as that will soon be the weapon of choice ( hopefully) although I'd be daft to commit to this race before its even running!
You can drift on them, but not to the same level as Ls.....

ZZs are good road tyres, especially if you want a period looking tread pattern. After you've got over the cost, that is...…
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Old 30 Jan 2019, 08:55 (Ref:3880590)   #19
Gerard C
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Gerard C should be qualifying in the top 10 on the grid
Ref to A048s they are allowed in HTC and there is a good relationship between Iberian Endurance and PA. If you're looking for some dimensions in 13", Avon only "offers" CR 28 I guess?
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Old 30 Jan 2019, 09:03 (Ref:3880596)   #20
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Ref to A048s they are allowed in HTC and there is a good relationship between Iberian Endurance and PA. If you're looking for some dimensions in 13", Avon only "offers" CR 28 I guess?
But Peter Auto don't organise the Spa Summer Classic…..

Avon CR6ZZ tyres are in road car sizes- http://www.avonmotorsport.com/historic/historic/cr6zz I don't know the compound they use.

Joe, Appears ZZs are only allowed to be fitted to Pre 1990 cars. I didn't know that!
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Old 30 Jan 2019, 09:28 (Ref:3880610)   #21
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Gerard C should be qualifying in the top 10 on the grid
You mean this: http://www.avonmotorsport.com/sites/...-TW1022-EU.jpg
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Old 30 Jan 2019, 09:33 (Ref:3880612)   #22
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Yes, but can’t think it applies to anything except road use. Another darn ‘E’ mark regulation!
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Old 30 Jan 2019, 09:43 (Ref:3880615)   #23
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Do you think the windscreen regulation will be adapted too? E marking is mandatory for rallye use I guess.
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Old 30 Jan 2019, 10:19 (Ref:3880622)   #24
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zefarelly should be qualifying in the top 3 on the gridzefarelly should be qualifying in the top 3 on the gridzefarelly should be qualifying in the top 3 on the grid
When I first saw historic saloons at Silverstone '91 or'92 . . . . several of the cars had cracked windscreen pillars . . . . and inner wing fronts on Cortinas . . . they all ran on Yoko's then. totally wrong tyres for historic cars IMO.
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Old 30 Jan 2019, 12:49 (Ref:3880656)   #25
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Not sure about CTCRC but HRSR certainly ran List 1B road tyres from inception (1983) to the end of 1996 season. Most used Yoko A008R though some used Avon Turbospeed (better in the wet). Good grip from the Yokos though you needed loads of camber for them to work right which made the cars look terrible and non-period. Much heavier (but loads cheaper) than the Dunlop CR65s we changed to for the 1997 season on.
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Old 31 Jan 2019, 08:33 (Ref:3880831)   #26
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zefarelly should be qualifying in the top 3 on the gridzefarelly should be qualifying in the top 3 on the gridzefarelly should be qualifying in the top 3 on the grid
The Aussies still run them, look daft don't they, especially compared to period photo's

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Not sure about CTCRC but HRSR certainly ran List 1B road tyres from inception (1983) to the end of 1996 season. Most used Yoko A008R though some used Avon Turbospeed (better in the wet). Good grip from the Yokos though you needed loads of camber for them to work right which made the cars look terrible and non-period. Much heavier (but loads cheaper) than the Dunlop CR65s we changed to for the 1997 season on.
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Old 31 Jan 2019, 13:54 (Ref:3880887)   #27
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Podd37 should be qualifying in the top 10 on the grid
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The Aussies still run them, look daft don't they, especially compared to period photo's


Agreed they do look daft, and it requires a lot of work to get the car to a point where it works properly. Problem is, at at what point do you go and allow the grippier tyre? When people started running on slicks? 70’s? 80’s? For me it should be as per period but what do i know.


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Old 31 Jan 2019, 13:59 (Ref:3880889)   #28
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Just an update, I emailed the organisers and they did give the (fair if it effects the majority of the field) reasoning of trying to balance the field, newer v older cars. It is an extra expense buying 8 tyres for a one off but those are the rules and as I’ve said, I’ve no issue with that. I am led to believe it was the same last year. Im not quite sure i get the reasoning, surely 70’s cars are faster than 50s or 60s ones and thats just it. I dont enter a modern race and expect everyone to be slowed down for me. Suddenly makes the race a lot more expensive for us though....


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Old 31 Jan 2019, 14:10 (Ref:3880891)   #29
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zefarelly should be qualifying in the top 3 on the gridzefarelly should be qualifying in the top 3 on the gridzefarelly should be qualifying in the top 3 on the grid
period tyres for period cars, I don't think anyone has a problem with that . . . . its speed differential that causes accidents with people not paying enough attention. Where that line ios drawn will vary wildly from car to car, person to person and series to series.
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Old 31 Jan 2019, 14:50 (Ref:3880900)   #30
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period tyres for period cars, I don't think anyone has a problem with that . . . . its speed differential that causes accidents with people not paying enough attention. Where that line ios drawn will vary wildly from car to car, person to person and series to series.
Exactly, but more than just speed differential- speed differential in braking and cornering. On a straight it really isn’t a problem. Take the example of a 1965 SWB 911 on Dunlop L tyres versus a mid 70s 911RSR on slicks. The cornering attitude will be completely different, let alone the speed. Likewise the two cars will be braking in a different way and distance. I think you’ll find that previous experience has taught the organisers that slicks (or AO48s) and early Dunlop Crossplies are not a good mix. The Spa 1hr race (that used to be called ‘Barry’s Race’) had / has a big mix of car ages, but still doesn’t allow slicks.

I totally get the point about using similar tyres to a car’s period fitment, but when said cars are racing against other cars of a similar period only.
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