Appearance (Due to no sales catalogue having yet been sourced, we apologise, but we do not have an image to show the apperance of this machine)
Engine - 3 ½ h.p. Precision single cylinder side by side m.o.i.v., 85 mm. bore x 88 mm. stroke giving a capacity of 499 c.c.
Carburettor - B & B fitted as standard.
Ignition - Bosch Magneto with handle bar control.
Transmission - Single-speed fixed drive.
Frame - Druid forks, sprung rear stand.
Standard Fittings - High grade saddle, fully equipped with complete set of tools and tool bag.
Finished in Black Enamel lined in two colours.
Calthorpe Two-Speed Gear and Free-Engine.
Patent application 5927, 1911, filed 9th March 1911, accepted 7th March 1912.
Motor Cycle, October 5th 1911
Motor Cycling, 21st November 1911
Motor Cycle, 23rd November 1911
Bicycling News and Motor Review, September 11th 1912 (4 ¼ HP model)