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Racing Tyres on Sprint
http://forum.triumphdolomite.co.uk/viewtopic.php?t=32969
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Author:  Dougal Cawley [ Thu Aug 17, 2017 5:39 pm ]
Post subject:  Racing Tyres on Sprint

Hi

I am going to race a Dolomite Sprint at the Portimao Legends Race.

I have to use CR65 L section tyres I'm going to fit the http://www.longstonetyres.co.uk/page/45 ... acing.html

Does anyone have any knowledge about what pressure suits a Dolomite Sprint?

Author:  SprintMWU773V [ Fri Aug 18, 2017 11:34 am ]
Post subject:  Re: Racing Tyres on Sprint

A slight aside but is this meeting part of the Algarve Classic Festival? I should be going to this so it would be nice to see a Sprint on the track there and hopefully get some good photos too. I think we have quite a few cars going in our race truck already but may have room if you needed help with transport.

Author:  gmsclassics [ Mon Aug 21, 2017 1:44 am ]
Post subject:  Re: Racing Tyres on Sprint

The class I race in in NZ does not restrict me to 'classic' race tyres but I use Dunlop 03G race tyres, with stiff sidewalls and 28psi in the front and 25 in the rear with the inner side pressure 0.5psi lower (depending on circuit rotation) . I'd ask your supplier for a guide to at least start with. Presume you'll have some opportunity to test the car / tyres at another circuit local to you beforehand so you can sort tyre pressures out and scrub the tyres in?

Author:  Dougal Cawley [ Thu Aug 24, 2017 10:27 am ]
Post subject:  Re: Racing Tyres on Sprint

Quote:
A slight aside but is this meeting part of the Algarve Classic Festival?
Yep. that's the one. I raced a TR2 there some years ago with the same mate who is sharing my Dolomite this year https://www.youtube.com/watch?v=wWPRxT9 ... 1D5b0YNmyL

It's a great track

Author:  Dougal Cawley [ Thu Aug 24, 2017 10:30 am ]
Post subject:  Re: Racing Tyres on Sprint

Quote:
The class I race in in NZ does not restrict me to 'classic' race tyres but I use Dunlop 03G race tyres, with stiff sidewalls and 28psi in the front and 25 in the rear with the inner side pressure 0.5psi lower (depending on circuit rotation) . I'd ask your supplier for a guide to at least start with. Presume you'll have some opportunity to test the car / tyres at another circuit local to you beforehand so you can sort tyre pressures out and scrub the tyres in?
What i will be using will be very different. I'm on Dunlop L section crossply CR65 tyres. I have done some testing at 30 and they were lovely, but weather that can handle 2 hours is another question. They are so much more fun that radial. I ran these before http://www.longstonetyres.co.uk/page/16 ... -tb15.html they were amazing. The lap times would have been much better, but the crossply tyres are so much more fun.

Author:  Dolly racer 33 [ Sat Oct 14, 2017 5:17 pm ]
Post subject:  Re: Racing Tyres on Sprint

Run them at, LF 24, RF 25, LR 25, RR 26, they should all equalise to 30/32 when hit. See you there.

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