Silverstone classic?

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thowman
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Silverstone classic?

Post by thowman » Tue Jul 09, 2013 8:52 am

Any imps in this event, and if yes - which day?
SimonBenoy
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Re: Silverstone classic?

Post by SimonBenoy » Tue Jul 09, 2013 11:55 am

I shouldn't think so - historic saloons at this event have to conform to appendix K regulations and this makes Imps generally uncompetitive, partly due to the unrealistic weight.
Andy Hillman
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Re: Silverstone classic?

Post by Andy Hillman » Sun Jul 28, 2013 10:53 pm

Just returned from ace weekend at silverstone classic and was just wondering if anybody had ever thought about entering an imp in the new fugi film Touring car championship run by the HSCC? just had a quick look at the regs on the hscc website basically says class is open to any period touring car from 1970 to 1999.
Does this mean a Bevan style imp with 10 inch slicks, 5 speed box and full house 998 could be entered?
next question has to be does anybody know the homoligated weight of a period bevan car ? as i think this will determine weather or not worth persuing .
many thanks in advance Andy
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doc knutsen
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Re: Silverstone classic?

Post by doc knutsen » Mon Jul 29, 2013 9:16 pm

Andy Hillman wrote:Just returned from ace weekend at silverstone classic and was just wondering if anybody had ever thought about entering an imp in the new fugi film Touring car championship run by the HSCC? just had a quick look at the regs on the hscc website basically says class is open to any period touring car from 1970 to 1999.
Does this mean a Bevan style imp with 10 inch slicks, 5 speed box and full house 998 could be entered?
next question has to be does anybody know the homoligated weight of a period bevan car ? as i think this will determine weather or not worth persuing .
many thanks in advance Andy
1970 onwards is FIA period G2, which means no five-speed JK transmissions...in fact, current FIA interpretation bans the use of the 4-speed JK box that was run by everybody in period.
8" and 10" wheels mit slicks would appear to be kosher, but beware of the homologated weights...a Sunbeam Imp Sport is homologated at just over 700kgs (706, if memory serves) while a Hillman Imp Super may run the exact same specs, but at 660-odd kilos, a saving of well over 50 lbs. Consider that a period 1293 Cooper S, running a third more cubic capacity, has to weight only 580 kg.
No wonder the Minis were quick in period...and even more of a wonder, how did the Bevan machines do so well, given such handicaps. From our experience, the advantages - apart from Bevan attention to detail - were traction, handling and brakes. Certainly, using ACB10 semi-slick (F Ford tyres) Avons, and correct homologated Viva f discs with aluminium alloy Girling callipers, you can brake incredibly late in an Imp. Where we lose out, is on torque, especially out of slow corners.
Andy Hillman
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Re: Silverstone classic?

Post by Andy Hillman » Mon Aug 05, 2013 10:47 pm

Thanks Doc Knutsen, just one more question, do you run with fiberglass doors, bonnet and boot?
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doc knutsen
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Re: Silverstone classic?

Post by doc knutsen » Tue Aug 06, 2013 8:36 pm

Andy Hillman wrote:Thanks Doc Knutsen, just one more question, do you run with fiberglass doors, bonnet and boot?
Hi Andy, FIA Period G regs are close to FIA Gr 2 regs as of 1971, which means that Chrysler had homologated GRP bonnets and boots, so these are OK, but doors must remain steel. The doors may be lightened as long as any mods are not visible...but of course there is the homologated minimum weight to contend with.
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