AJS Model 20 500 (1948-61) technical specifications
AJS Model 20 500 is produced in 1948-61. Engine is Four stroke, parallel twin cylinder, OHV. 2 valve per cylinder, Crankshaft: 3-saved plain bearing / roller bearing, displacement 498 cc / 30.4 cu in , produces power 21.6 kW / 29 hp. AJS Model 20 500 top speed is 150 km/h / 93 mph. AJS Model 20 500 has 2 photos.
Technical specifications
+ Add to 'Compare list'| Model: | Model 20 500 |
| Years: | 1948-61 |
| Engine: | Four stroke, parallel twin cylinder, OHV. 2 valve per cylinder, Crankshaft: 3-saved plain bearing / roller bearing |
| Capacity: | 498 cc / 30.4 cu in |
| Bore x Stroke: | 66 x 72.8 mm |
| Compression Ratio: | 7.3:1 |
| Cooling System: | Air cooled |
| Oil Capacity: | 2.5 L / 5.3 US pt |
| Induction: | Carburetor |
| Ignition: | Lucas magneto, K2F |
| Spark plug: | KLG FE80, 14 mm thread |
| Starting: | Kick |
| Clutch: | Multi Plate (dry, Burman) |
| Max Power: | 21.6 kW / 29 hp |
| Transmission: | 4 Speed |
| Final Drive: | Chain |
| Frame: | Single cradle |
| Front Suspension: | Hydraulic telescopic fork |
| Rear Suspension: | Dual chocks |
| Front Brakes: | Drum |
| Rear Brakes: | Drum |
| Front Tyre: | 3.25 -18 |
| Rear Tyre: | 3.25 -18 |
| Weight: | 178 kg / 392 lbs |
| Fuel Capacity: | 17 L / 4.5 US gal |
| Top Speed: | 150 km/h / 93 mph |
Ian Sutherland
2023.02.11 16:59
Appearance
5
Comfort
5
Performance
4
Soft lazy, easy-to-ride twin, not a Hwy Bile, Sunday afternoon back road twisties special, but at very conservative speed, but a special bike with so many firsts.
Durability
5
Good if properly looked after.
Maintcost
3
More if you can find parts these days.
Rare First year, with full front and rear suspension(Canadlesticks) original Daul seat, large fully chromed tank. This is a rare beautifull, soft old tourer. I love these Bikes, Always wanted a G45 to vintage race, but my Norton Domiracer came first back in the early eighties, special short-stroke build and fast, So I'd still love to do it if anyone has an appropriate engine they wish to part with, Bottom end would suffice.
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