Flashback Friday 2012: BriSCA F1 Stockcars Through The Ages (Part 2)

Flashback Friday: A weekly article brought to you from the vaults of top BriSCA photographer Colin Casserley and this week Rick Young.

Pete Fenton’s replica of Doug Cronshaw’s Potent Mix car caused a lot of interest last week at the Autosport International, so this week focuses on Cronshaw, and two of his most famous creations.

1. The Potent Mix made it’s debut at Northampton in early 1970, the car was fitted with a Pontiac engine and weighed in just over the then minimum weight limit of 22cwt (approx 1117kilos). It’s design was influenced by the Super Modifieds of USA and South Africa. The Potent Mix became a shape of car that was copied by many in the UK during the 1970s. The rules of the day required some “stock” body and Doug used parts from a Triumph Herald and Standard Eight to comply with the regulations.

The Potent Mix debuted at Northampton. Photo Rick Young

2. Doug rolled the machine during the first meeting and it suffered some damage. This photo shows it ready to go back to Rochdale via towing ambulance.

the Potent Mix after the first meeting. Photo Colin Casserley

3. Doug acquired Wynn’s Oil sponsorship for 1971, the nose of the bonnet was cut off and the car repainted in the “Candy Rock” colours of Wynn’s. This Rick Young photo shows Doug in action at Northampton.

the Potent Mix back at Northampton. Photo Rick Young

4. Doug Cronshaw fan club members received this photograph of the Potent Mix during the 1971 season.

Doug Cronshaw fan club picture. Image Colin Casserley

5. Now fitted with the first 454 Chevrolet engine used in UK stock car racing the Potent Mix carried Doug to victory in the 1971 Championship of the World at Coventry. This fan club photo show’s Doug with the Championship trophy. At age 22 Cronshaw was the then youngest driver to win the world title.

World Champion Doug Cronshaw fan club photo. Photo Colin Casserley

6. The Potent Mix was sold to Ainsdale’s Colin Murphy, Murphy had previously raced for Mick Smith’s Trackstar organisation at New Brighton and Kirby in the Mod Stock class, which was essentially F2 stock cars.

BriSCA F1 stock car driver Colin Murphy 47. Photo Colin Casserley

7. Cronshaw built himself a new machine for 1972. The Auto Enthusiast sponsored car would become a world beater several years later and almost carried Doug to a successful defense of the World Title in a thrilling race at Belle Vue in 1972. Had Doug not spun avoiding a car on fire who knows what the result would have been.

Doug Cronshaw with his new machine. Photo Colin Casserley

8. For most part, Cronshaw of 1972 suffered the “gold Top Jinx” which saw him borrow the Potent Mix.

the borrowed Potent Mix. Photo Colin Casserley

9. Stuart Smith’s spare machine to honour his bookings as World Champion.

Stu Smith's 391 spare machine. Photo Colin Casserley

10. The Potent Mix was back in Doug’s hands for 1973 and totally revamped. It carried Doug to third place in the 1973 World Final.

the revamped Potent Mix. Photo Colin Casserley

11. The Auto Enthusiast car, complete with the 454 Chevy, was sold to Stuart Smith in 1973, who used the car in the early part of the season while his engine was undergoing a rebuild. Stuart dubbed the car “pussycat”.

the "pussycat". Photo Colin Casserley

12. Stuart sold the car on to Dave Chisholm. In the hand of the Wheathampstead Wheelhandler the car realised it’s full potential. Chissy won three straight world tiles, becoming the first man to do so, he was also the first to win both the F1 & F2 world crowns and the first to win on both shale and tarmac.

Dave Chisholm 252. Photo Colin Casserley

13. A back injury forced Dave to wind down his racing and during the latter years he raced for the SCOTA/F1SCAR organisation. He is shown here at Ipswich driving his 3 time world wining car, along side him is Pete Guinchard who is driving a Doug Cronshaw built car.

Dave Chisholm 252 at Ipswich. Photo Colin Casserley

14. The Pete Fenton replica of the Potent Mix in all it’s glory at the Autosport show 2012.

the Potent Mix replica at the NEC 2012. Photo Colin Casserley

15. “Cronny” in the press. Doug made the cover of the September 1970 issue of Stock Car. The photo is from Belle Vue

the Cover of Stock Car. Image Colin Casserley

16) Doug and Stuart Smith enjoyed sponsorship from Auto Enthusiast Magazine in 1973. This photo is taken from an issue of the magazine and is part of Rick Young’s extensive collection.

Doug Cronshaw and Stuart Smith. Image Rick Young

See Part 1 HERE, Part 3 HERE, Part 4 HERE, Part 5 HERE, Part 6 HERE, Part 7 HERE and Part 8 HERE.

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