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Refurbishment of the Mors  racing car

One of three 13 litre racing cars built for the French G.P. held in Dieppe on July 7th, 1908. One lap of the circuit = 47.74 miles, net racing distance 477.4 miles. This is the only surviving example.
This gearbox is from the car driven by Jenatzy who finished in 16th place after driving for 8 hours and 25 minutes at an average speed of 56.8 mph over incredibly rough roads. The winning Mercedes averaged 69 mph.

Chain drive, with a final gear ratio giving 64 mph / 1000rpm.

Photo by kind permission of Mr. Berresford

Original gears to be
re-manufactured by
Charles Leek & Sons Ltd

New gears assembled into gearbox.

Full gearbox showing the sprockets that give the chain drive to the rear wheels.

The series of pictures below show the manufacture of  the four replacement pistons required by Mr. Berresford to include a modification to the compression and oil grooves.