There were detailed differences in the design resulting in legal disputes between the two companies over the intellectual rights to the detachable wheel.
The wheels on the right side of the car have a left hand thread on the nut and vice versa.
At the 1908 Isle of Man TT race, 21 of the 35 entrants used Rudge-Whitworth wheels, and only one of the finishers didn't.
In 1938, Rudge-Whitworth sponsored Billie Fleming to attempt the distance record for the most miles covered in a year.
They provided a bicycle with three-speed derailleur gears and a cyclometer, as well as financial support so that she could cycle for 365 days continuously.
[5] Selling re-badged Werners in 1909, the company went on to produce their first motorcycle in 1911, a single-cylinder F-head 500 cc (31 cu in) bike.
In 1923, the company introduced an in-house manufactured 4-speed gearbox to replace the Jardine, and Multigear production ended.
Rudge engineer George Hack is said to have taken his design idea from the four-valve Triumph Ricardo (produced from 1921 to 1928).
In 1925, a 500 cc version with linked front and rear brakes appeared, and the big end bearings were now fed oil through the crankshaft pin.
A 250 cc TT Replica was built, and the road bikes were fitted with proper oil bath primary chains, and a stand that could be operated "with just one finger".
The Ulster 500 cc was fitted with a "semi-radial" (parallel valves with radial ports) cast-iron head.
For 1934 the Ulster had its head cast in aluminium bronze, and a radial four-valve 250 cc Sports was released.
In 1937 the valve gear became fully enclosed on the 500 cc models, but finances were bad and Rudge was bought by EMI, and production was interrupted, being moved to Hayes, Hillingdon in Middlesex.