Tag Archives: Westcott

Speedway To 500 F3 – JBS Norton Mk 1 #RAC/002/51/AC

In 1950 Alf Bottoms switched from being a two wheel Speedway star at Wembley to a racing driver with James Bottoms & Sons being responsible for modifying the 1947 Cowlan 500 Formula Three car, originally built by R.L. Coward and Geoff Lang, with help from Chris and Noel Shorrock into the first JBS.

JBS Norton Mk 1, Richard Utley, Silverstone,

Alf and brother shared the driving duties with Alf being the more successful scoring several out right wins as did Miss Elisabeth Store who drove the JBS to victory in the ladies race in October.

JBS Norton Mk 1, Richard Utley, Oulton Park,

For 1951 JBS not only updated it’s design to incorporate double wishbone front suspension and adonised aluminium body, but also put the design into production building somewhere between 13 and 20 cars.

JBS Norton Mk 1, Richard Utley, Castle Combe,

During the season JBS drivers included Alf, Ron “Curly” Dryden, Les Leston, Don Parker, Winco Frank Aikens, Dick Richards, Ron Frost, Jack Westcott, Ken McAlpine, Peter Collins, John Habin, Allan Moore, John Coombs and André Loens.

JBS Norton Mk 1, Richard Utley, Castle Combe,

Despite the deaths of Alf, in an accident at the Luxembourg Grand Prix, and Ron “Curly” Dryden in an accident at Castle Combe JBS scored 120 podiums during the year with Peter Collins and Don Parker finishing 3rd and 4th in the 1951 British F3 Championship behind Cooper drivers Eric Brandon and Alan Brown.

JBS Norton Mk 1, Richard Utley, Castle Combe,

Chassis #RAC/002/51/AC is seen in these photographs with Richard Utley at the wheel, Silverstone top, Oulton Park second and Castle Combe the remainder, Richard who raced a Frazer Nash Le Mans Replica, Tojeiro 1100 and Lotus XI between 1955 and 1962 also worked with John Tojeiro on the 1100 and later Bob Hicks on the MK1 Caravelle Formula Junior car.

Since returning to historic racing in 1987 Richard has also co founded C&R Engines with Charlie Banyard Smith to re-manufacture long stroke Manx engines of the type that powers his JBS.

Thanks for joining me on this “Speedway To 500 F3” edition of “Gettin’ a li’l psycho on tyres” I hope you will join me again tomorrow. Don’t forget to come back now !

Share

Happy Birthday Cheryl – Marcos Mantis GT2

After the successes of the Rover V8 powered Mantula Rover based Marcos LM400, LM500 and LM600 GT cars which won the 1995, 1996 and 2000 British GT Championships Marcos announced the Dunlop sponsored spec Mantis Challenge in 1998 with spec normally aspirated quad cam Ford V8 motors.

Marcos Mantis GT2, Britcar, Castle Combe

In 2002 racers Warren and Charlotte Gilbert (nee Osborn) established Topcats Racing in Westcott, Buckinghamshire which has become a leading contender on the British Endurance GT seen and a leading independent service center for Caterham, Corvette, Lotus, Marcos and Mosler cars offering everything from a full service to an LS7 engine transplant.

Marcos Mantis GT2, Britcar, Castle Combe

Today’s featured Britcar Class 2 Marcos Mantis is built around a space frame with a fiberglass body and is powered by a standard LS7, 7 litre / 427 cui V8 engine mapped to produce 505hp on 98 octane unleaded fuel which is transmitted to the rear wheels through a 6 speed Holinger sequential gearbox.

Marcos Mantis GT2, Head, Tilley, Britcar, Castle Combe

Additional features include electric power steering, quick fill fuel tanks, quick lift air jacks and spec 18″ Dunlop slick or wet tyres on center lock wheels, four of which can be changed in 22 seconds.

Marcos Mantis GT2, Britcar, Castle Combe

With a weight of 1050 kgs / 2315 lbs the car will reach 60mph in an ear splitting 3.5 seconds and a top speed of 190 mph.

Marcos Mantis GT2, Head, Tilley, Britcar, Castle Combe

Sam Head and Kyle Tilley drove the #26 car entry for most of 2011 and they are seen above at Castle Combe on the 27th of August where they finished a low 20th overall from a more representative 8th on the grid, this a month after Henry Fletcher and Raphael Fiorentino had finished 2nd overall and 1st in Class 2 at Spa.

At the seasons end the Topcats Class 3, 50 hp less, #36 Mantis finished 2nd in the Britcar Championship with Owen O Neill, Henry Fletcher, Jon Harrison and Raphael Fiorentino all taking turns at the wheel during the season and the #36 was classified 3rd with Jeff Wyatt replacing Kyle for one round at Snetterton and Neil Huggins and Jon Harrison being the cars drivers in the championship final at Brands Hatch.

Topcats appear to have retired their LS7 powered Mantis cars from competition at the end of 2012 after their 2 cars both now running in Class 2 finished 3rd and 11th in the Britcar Championship.

Wishing Cheryl a Happy Birthday.

Thanks for joining me on this “Happy Birthday Cheryl” edition of “Gettin’ a li’l psycho on tyres” I hope you will join me again tomorrow when I’ll be looking at another Desse. Don’t forget to come back now !

Share