500 C.C. J.A.P. O.H.V. Speedway engine 80 m/m bore x 99 m/m stroke. This engine has the lowest lb.weight per brake horse power developed of an unsupercharged engine on the world market.Weight: 59 lb. met. Output : 39,5 B.H.P. at 6,000 R.P.M. Compression ratio : 14:1 use on alcohol fuel.
By double delivery Pilgrim Oil Pump with separate feed to rocker box and valve stems.
AMAL Twin Float racing carburettor type 27/013
B.T.H. KDt.C.6 special racing type with waterproof end cover.
EXCELSIOR design built with specialstel tubing and proved by experience to the first-class in service and Control.Finished troughout in chromium plate. The machine illustred is fitted with Mark II frame.
Special Excelsior design Telescopic FORKS,all steel construction,and with high quality tubing, adjustable as to spring tension an trail
Adjustable on off side only
Adjustable with rubber covering.
Specially strong light steel,chromium plated.
Guard on front down tube to keep flying cinders from rider an cylinder head.Rear guard fitted with side valance,both chromium platet.
Strongly built with good quality sheet steel,specially supportet at points of attachement,finished in chromium
Fitted to rear stays in accessible position.capacity 1 pint,chromium plated
Large diameter exhaust pipe fitted to R.H. side of machine.rigidly mounted with two clips an slotted to comply with A.C.U. regulations.
Transmission & Clutch
1/2 in.x.303 in. Renold to single-speed countershaft of EXCELSIOR exclusive design an very robust construction.fitted with special heavy duty multiple plate clutch, Ferodo lined.Thence by 3/4 in. x 1/4 in..Renold chain to rear driving sprocket. standart gear ration of 8,93 : 1 can by varied as desired by exchanging sprockets.
Strongly built of heavy gauge spokes with steel nipples and stell rins,to withstandabnormal strain,chromium plated.
Dunlop Speedway 2.75 in. x 23 in.front 2.75 in. x 22 in rear.Twosolid security bolts fitted to rear wheel.
On rear guard,finish chromium plated.
complete machine,including chromium plated Frame,forks,guards,stays,oil and petrol tanks,wheel rims,handlebars and exhaust pipe,with all accessories and ready for racing:
£ 215.0.0 plus Purchase Tax £ 58.1.0