Frame

Numbered 24376 to 30939 (approx) in Rudge sequence Fully strutted with struts from the steering head (special lug) to the rear wheel, from the rear wheel to the front of the crankcase and from the crankcase to the steering head. Lower strut cross braced through the rear frame hollow bolt. Special kneehook lug. Steering head fork stop machined off. Bolt on seat stays with drawback type chainstays for rear wheel adjustment.

Wheels

WM1x21 (f), WM1x21 (r), wired on type, interchangeable with small flange (dog drive hubs) with nickel plated rims, spokes & hubs.

Mudguards

Short back and front ‘D’ section, nickel plated.

Tanks

Bright red enamelled of soldered construction. Fuel tank fitted between the frame tubes, tapers front to rear to fit within frame struts. Oil tank fixed to rear frame downtube. Screw fillers to both tanks.

Engine

Basically as 1928 Special but with 1927 sports cylinder head often, but not exclusively, using a central plug position. Parallel inlet and exhaust valves with forward facing exhaust ports and flange fitting to carburetter. Rockers supported on plates bolted to the cylinder head. Total loss oiling (wet sump) with square based barrel. Forward mounted round ML magneto.

Forks

Rudge 1927/8 pattern closed ended with brake anchor attachments removed. Nickel plated.

Transmission

Gearbox countershaft with clutch. 1/2”x 0.305 chains

Carburetter

Sports type Amac 10MDY with quick action twist grip.

Exhaust system

Two short nickel plated open pipes finishing level with the bottom of the frame downtube.

Standard Fittings

1” non adjustable nickel plated handlebars with André type steering damper. Riveted angle and strip steel type centre stand and magneto cut out on handlebars.

©  Colin Chapple