Some of those directly drove the propeller, others employed a chain drive.
Early examples continued to use the chain drive and independent suspension in the rear.
Their experience with these machines had indicated a strong preference for chain drive.
This is then coupled to a chain drive to direct power to the rear wheel.
From 1924 all models had the less expensive chain drive.
It also had internal expanding brakes and chain primary drive.
This device, known as the Polybolos, worked with a chain drive instead.
The machine features the earliest recorded chain drive in the history of technology.
Parry-Thomas was later killed in an attempt on the land speed record when a chain drive broke.
All four rear wheels are powered by a chain drive.