In May 1961 a piece of successful Formula One technology percolated into the environs of Indianapolis which began started a whole sale revolution in the layout of the cars that would dominate the Indy 500 hence forth in the form of the Kimberly Cooper Special driven by Jack Brabham.

The Kimberly Cooper Special was the smallest car in the field and possibly with the least powerful motor but what everyone present learned from the car that started 19th and came in 9th was that the rear engine could handle the corners so much better than the hitherto dominant front engine Roadster machines that the lack of 150 hp made little or no difference.

Imagine just putting the engine in the back of your car giving a 150 hp advantage ! It was a no brainer, but in 1962 only the Californian Speed King Micky Thompson and ’55 & ’56 Indy winning owner John Zink had rear engined cars prepared for the Indy 500.

Rookie Dan Gurney who passed his Rookie test in a Roadster was keen to drive either of the rear engined cars in the race in an effort to impress Lotus boss Colin Chapman whom he had invited over from Europe at his own expense in an effort to entice Colin into building Lotus indy cars for 1963. Dan gave up on the turbine powered John Zink Track Burner but did manage to qualify 8th in the under powered Thompson Buick and coming in 20th.

Chapman was sufficiently impressed with the Indy 500 and it’s potential rewards to build the Lotus 29 seen here for the 1963 race. The Lotus 29 featured a monocoque chassis, as campaigned in Chapman’s successful 1962 Lotus 25 Grand Prix car, in place of the usual tube space frame and it had a powerful version of a Ford stock block V8 inplace of the almost ubiquitous 4 cylinder Offy that had been winning at Indy since the mid 1930′s and could trace their ancestry back to the Millers of the 1920′s.

Jim Clark and Dan Gurney were to race the Lotus challengers Clark qualified chassis 29/3 5th and Gurney chassis 29/1 12th. Towards the end of the race Clark was challenging Parnelli Jones for the lead when Jones Watson developed an oil leak, but the USAC officials managed to refrain from black flagging Jones before the oil stopped leaking which allowed Parnelli to take his one and only Indy 500 victory ahead of the Rookie Clark. Dan came in 7th also completing the full 200 laps. Dan’s chassis #29/1 today sits in the IMS museum painted in the green and yellow colours of Jim Clark’s #92 chassis 29/3.

The following year Bobby Marshman put #29/3 now known as the Pure Firebird Special on the middle of the front row for 1964 Indy 500 right next to pole sitter Jim Clark in his newer Lotus Ford 34, see above. Bobby damaged an oil pipe going low on the apron while in the lead on lap 37 trying to avoid the slower Johnny White, Bobby was eventually classified 25th.

Despite the fireball at Indy in 1964 Bobby tested chassis 29/3 at the seasons end wearing nothing but the usual, for the period, t-shirt and jeans at Phoenix. During the session Bobby’s car was involved in an accident which ruptured the fuel tank, a week later Bobby died of the burns he subsequently sustained.

Ed Arnudins photo’s show Lotus Mechanic Colin Riley at the wheel of Jim Clarks of #92 Lotus 29 Ford being towed through the Indianapolis garage area by another Team Lotus mechanic Dave Lazenby who is at the wheel of the dinky li’l towing tractor in the top photograph.

My thanks to Ed and Steve Arnaudin for the photo’s, Tim and B Squared at The Nostalgia Forum informing me of which chassis is featured in today’s post for identifying Colin and Dave in the photo’s.

Thanks for joining me on this ‘Oil Leak ? What Oil Leak ?’ edition of ‘Getting’ a li’l psycho on tyres’ I hope you will join me again tomorrow. Don’t forget to come back now !

05 02 12 ps Thanks to Brian for pointing out the now corrected Bobby Marshman spelling error and pointing out that Bobby did not spin out of the 1964 Indy 500.