1922 2 ½ h.p. "Calthorpe Two-Stroke" Two-Speed

1922 2.5 2 speed

Appearance As picture



Engine - 2 ½ h.p. PECO, 67mm. bore x 69mm. stroke having a capacity of 243c.c. Two stroke of the three port type. Hoffman roller main bearings and crank pin.

Carburetter - Mills, single lever.

Ignition - High-tension variable Magneto, handle bar control.

Tank - 1 ¼ gallons petrol, 1 quart oil.

Lubrication - "Patent and perfect system" (No oil mixed with petrol), through a sight drip feed Lubricator.

Transmission - Two-Speed Albion Clucth and Kick Starter, Chain and ¾in. belt to rear belt rim.

Frame - Weldless steel tubing, all vital parts reinforced, Druid forks.

Brakes - Rear acting on belt rim, operated from foot pedal and powerful Bowden front brake.

Wheels - 24in. x 2 ¼ in. tyres, heavily plated steel rims with coloured centres, oil retaining dust and weather proof hubs.

Standard Fittings - Patent Pan seat, rear stand, carrier, strong wide mudguards, single armoured Pannier Bag with tools.

Finished in four coats of lustre enamel and all bright parts heavily plated, tank enamelled Black and Gold leaf lined.



Availabe as a 2-speed verion with Albion clutch and kick starter OR with Enfield 2-speed gear.


Additional Information - (Available to members in downloads section)

  • 1922 Sales Brochures, Enfield gear information and spare parts list.
  • The Motor Cycle 4th May, 1922 - Road Test of 2 ½ h.p. Single-Speed model.
  • Calthorpe Letter, Dated, Dec. 6th 1922.


  • 1922 Sales Brochure.