Speed in Gears

Post date: Dec 25, 2011 12:25:49 PM

The following is based on information taken from the Cycleserv publication: Norton Commando ā€˜Sā€™ Type, Roadster, Fastback (Page 66). It is based on standard gear ratios and sprockets with 19ā€ wheels and a 4.10 section rear tyre. The only variable is the number of teeth on the gearbox sprocket. My Commando is now fitted with a 20 tooth gearbox sprocket, down from the 22 tooth sprocket with which it came.

Speed in Gears

Perce Butterworth