These are the known mechanical and performance specifications for your 1949 Excelsior JAP Speedway.
Basic Specs
![](/motobrands/Excelsior.png)
Engine
Displacement497.00 ccm (30.33 cubic inches)
Type
DetailsSingle cylinder, two-stroke
Max RPM
Compression
Bore/Stroke
Valves/Cylinder
FuelingCarburettor. Amal 27/013 dual-float
Ignition
Exhaust
Lubrication
Cooling
Chassis
Frame Type
Rake
Trail
Front Suspension
Front Travel
Rear Suspension
Rear Travel
SeatSingle
Seat Height
Alt. Seat Height
Total Height
Total Length
Total Width
Ground Clearance
Wheelbase
Dry Weight
Wet Weight
Wheels & Brakes
Front Tire/Tyre
Rear Tire/Tyre
Front BrakesExpanding brake (drum brake)
Front Brake Diameter
Rear BrakesExpanding brake (drum brake). Dunlop alloy-rim
Rear Brake Diameter
WheelsSpoked
Comments