Wednesday, July 10, 2019

Yes, leaf springs for head valves


John Godfrey Parry-Thomas was a Welsh engineer and motor-racing driver. He built and drove Babs, achieved the land speed record,  of 171 mph, in 1926

Babs was powered by a 27-litre Liberty aero-engine, began as 'Chitty 4', one of Count Louis Zborowski's series of aero-engined cars named 'Chitty Bang Bang'.

Parry-Thomas rebuilt Chitty 4, untilized four Zenith carburetors, and his own design of pistons.

While chief engineer at Leyland Motors, he designed engines with leaf springs instead of coil springs because at the time, coil springs were prone to breaking.

The car was geared so high, that in the 1970s, after being unearthed and restored, it had to be towed to 60 mph and bump started.

http://wwwbollyblog.blogspot.com/2019/06/leaf-valve-springs.html
https://en.wikipedia.org/wiki/Babs_(land_speed_record_car)
https://www.hemmings.com/blog

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