BEC slicks

[Kevin Jones]

Been out running on some second hand Avon hillclimb/sprint slicks but suffered big understeer. Managed to dial some of it out with major setup changes but think the real problem was mismatched front/rear tyres for this use, easy to see the rears were much softer then the fronts once they were warm.

Will have a chat with BMTR, but given the costs was wondering what I should know before parting with hard earned, such as which of the soft compounds has worked well on mixed sprint & hillclimb work but survived a seasons use of double drivers and opinions on the radials vs crossply slick debate for BEC use. Current wheels are 8" & 10", expecting all in weight is likely to be circa 560kgs (on radials with driver). The Avon codes on the current tyres are 11529 (front) & 8888 (rear).

Ta

Kev

[SteveD]

speek to mark anson or barny they run slicks on there bec and are very quick so there the best people to speak to tbh

[Terry Everall]

Is this with the turbo car ?

[Kevin Jones]

Is this with the turbo car ?

Yes, should have said, think likely to be running it in the 275-325 bhp range

[John Loudon - Sponsorship Liaison]

What were the fronts that you used - crossplies or radials? If radials, the front top wishbone geometry looks all wrong from the pic in your avatar

[Kevin Jones]

Good spot, in avatar it's on ACB10s, since then reset geometry for radials.

Initially did think it was a combination of bad setup and over driving but when I eventually got around to simply poking the tyres with a small allen key after a run (don't have a durometer yet) the difference front/rear was very obvious. Even after tweaking ARBs, shocks, camber and rake it was bad enough that ACBs would have been preferable in the bends.

[barney]

the problem you might have is with second hand slicks.

how worn are they,there is a mountain of difference in behavior from new,depending on how they were treated,age etc..are they the same compound?

cheers

Barney

[ACW]

I never managed to get a season of single driving out of slicks. If I were double driving on slicks I'd be expecting to use 3 sets. However.... I always had one compound that would be a partial compromise between the long fast sprints and the slow short twisty hills / sprints. In an idea world I would have a set of A15 and A40 as well as a set of wets.

But no experience of BECs but your power and weight is in CEC territory anyways.

[Terry Everall]

radials on mine are all A15 compund but what spring rates are you running?and what clicks on shocks

Ring me on 07767836234 for a chat

[Kevin Jones]

Fronts are A40, rears A15 but apparently A40s must be at least three years old so rather past there best which ever way you look at it .

Tel, running pretty standard mega suspension setup, will give you a call, ta.

[barney]

3 years old....they will be totally fubar......with no grip at all...try some softner see if they will be revitalised enough for one trackday...

barney

[Terry Everall]

I can sell you some unused softener

[mark.anson]

Kev

Avon Crossplys A15 rear and A92 fronts will do the job.

A15s on the front too will last a bit better if you are double driving, the others may give up for the 2nd driver particularly if its a longer circuit or hot day.

Mark

[Terry Everall]

I would stick with A15 all round

[Kevin Jones]

the others may give up for the 2nd driver

Now that idea I like  

Thanks for comments, BMTR also said A15 all round because of double drive & likely expect 2 sets per season.