ROVER 350 cc Motorcycle

*1925 - 1926 Rover 350 cc Motorcycle - Specifications*
Engine
Single vertical cylinder, 74 mm bore, 80 mm stroke, 344 ccm capacity.
Overhead valves located in detachable head.
Standard model has cast iron piston, but aluminium alloy piston can be fitted at extra charge.
Mainshaft runs on ball bearings, roller-bearing big end.
Exhaust lifter fitted.
Binks 2-jet carburettor, inlet pipe integral with carburettor body, thus eliminating clip fixing and attendant air leaks.
Valve Gear
Overhead rocker gear enclosed, rocker bearings lubricated by felt pad.
Valve operation by long tappet rod from crankcase, one camwheel.
Valve gear extremely quiet in operation.
Lubrication
Engine lubricated by mechanical submerged gear pump as used on most car engines.
Pump is located at bottom of sump, and draws oil through a large filter, delivering it under pressure through regulator and tell-tale to big-end bearing and cylinder. Surplus returns to sump.
Much of the efficiency of the engine is due to this continual circulation of cool oil through engine.
The entire supply - one quart - sufficient for 1,000 miles running, is carried in the sump.
Engine - Gear Unit
Engine and gearbox are constructed in one unit but gearbox can be detached from main housing if required.
Transmission between engine and gearbox by Hans Renold chain, which is completely protected from mud and grit, and runs in oil bath.
Chain is adjustable by raising or lowering magneto bracket.
Magneto spindle takes no part whatever of driving strain.
Gears and Clutch
Gears are solidly constructed, and mainshaft runs on ball bearings.
Gears controlled by long lever convenient to rider’s right hand.
Ratios: 5.5, 9.3 and 15.5 to 1.
Clutch housed in chain sprocket, and of Ferodo insert type, controlled by lever on handle-bar.
Transmission
By Hans Renold roller chain throughout.
Shock absorber fitted in rear hub.
Rear chain protected by ample guard.
Brakes
Internal expanding brakes fitted to front and rear wheels, of ample power, but not fierce in operation.
Frame Features
Front and rear stands fitted, latter of spring-up type.
B. & D. shock absorbers built into the front fork, links of which are adjustable and provided with greasers.
Back wheel spindle provided with ingenious means of instantly taking up side play in bearings.
Footrests adjustable to suit individual riders’ requirements.
Finish
Frame coslettised and finished in best quality black enamel.
Tank panelled in red and aluminium, with black top.
Usual parts heavily plated.
Equipment
Toolbags and complete kit of tools, etc.
Number plates, licence holder, tyre inflator.
Best quality saddle with padded top.
Upturned handlebar can be fitted at option.
Speed
60 mph with the standard model. With aluminium piston speed improved.
Prices
Standard model £ 55
Aluminium alloy piston (instead of cast iron) 7/6.
Bulbhorn 10/6.
Leg shields 10/6
Footboards (instead of footrests) 7/6.
A l l i n f o r m a t i o n s w i t h o u t g u a r a n t e e

ROVER 350 cc

Specifications

1925 - 1926