General İnformation |
| Model |
AJS Stormer Y4 250 Mk 2 |
| Year |
1974 |
| Category |
Cross - Motocross |
| Price as new |
US$ 1149. Prices depend on country, taxes, accessories, etc. |
Engine and transmission |
| Displacement |
247.00 ccm (15.07 cubic inches) |
| Power |
25.00 HP (18.2 kW)) @ 7000 RPM |
| Max Rpm |
8000 |
| Compression |
11.0:1 |
| Bore x stroke |
68.0 x 68.0 mm (2.7 x 2.7 inches) |
| Fuel system |
Carburettor. AMAL 32mm concentric |
| Fuel control |
Port control |
| Ignition |
flywheel magneto |
| Lubrication system |
Pre-mix. Castrol R at 20:1 |
| Cooling system |
Air |
| Gearbox |
4-speed |
| Transmission type, final drive |
Chain |
| Exhaust system |
loud, expansion chamber |
Chassis, suspension, brakes and wheels |
| Frame type |
Double downtube, full cradle |
| Front suspension |
Telescopic forks |
| Front wheel travel |
178 mm (7.0 inches) |
| Frame |
2.75-21 |
| Front tyre |
2.75-21 |
| Rear tyre |
4.00-18 |
| Front brakes |
Expanding brake (drum brake) |
| Front brakes diamete |
127 mm (5.0 inches) |
| Rear brakes |
Expanding brake (drum brake) |
| rear_brakes_diameter |
127 mm (5.0 inches) |
Physical measures and capacities |
| Dry weight |
104.3 kg (230.0 pounds) |
| Power/weight ratio |
0.2396 HP/kg |
| Seat height |
762 mm (30.0 inches) If adjustable, lowest setting. |
| Front percentage of weight |
46,5 |
| Rear percentage of weight |
53,5 |
| Ground clearance |
254 mm (10.0 inches) |
| Wheelbase |
1,410 mm (55.5 inches) |
| Fuel capacity |
7.57 litres (2.00 gallons) |
Other specifications |
| Color options |
Orange tank, grey frame, black side panels |
| Starter |
Kick |
