1913 4 ¼ HP Precision SV

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 - 4 ½ h.p. Precision, side by side m.o.i.v., 90 mm. bore x 96 mm. stroke.

Carburetter - A.M.A.C or B & B fitted as standard.

Ignition - Bosch Magneto - with large guard.

Tank - Rounded tank shape, 2 gallons petrol capacity and 3 pints oil, Best and Loyd semi-automatic drip feed lubricator, Petrol sump and filter, screw-down filler caps.

Transmission - Calthorpe two-speed countershaft gear, complete with kick starter , OR with three-speed Armstrong gear, OR with single fixed drive.

Frame - Druid forks standard, weldless steel tubing.

Wheels - 26 in. or 28 in.

Standard Fittings - XL-All pan seat, large aluminium footboards, Calthopre patent quick-detachable sidecar joints, side sheilds to front mudguards, spring-up back stand, front wheel stand, tubular carrier with large pannier bags.




This machine is especially designed for sidecar work, and the sidecar to which is attached is priovided with a tradesman's delievery body. The Chassis also takes a touring passenger body if desired.

Additional Information - (Available to members in downloads section)

  • Advertisements as published in 1913.
  • The Motor Cycle, Nov. 28th, 1912 - Olympia Show Report.
  • Bicycling News and Motor Review, Sept. 11th, 1912 - Calthorpe Motor Cycles Article.
  • Motorcycling, May 13th, 1912 - Combination Article.


  • The Motor Cycle, Nov. 28th, 1912..
  • Bicycling News and Motor Review, Sept. 11th, 1912.
  • Motorcycling, May 13th, 1912.