Norton Dunstall
1965 specification Dunstall Dominator at 2010 Quail Motorsports Gathering in Carmel, California, US
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| Manufacturer | Dunstall Motorcycles |
|---|---|
| Production | 1964–1970 |
| Predecessor | Norton Dominator |
| Successor | Dunstall Commando 750 |
| Engine | 745 cc (45.5 cu in) air-cooled OHV parallel twin |
| Transmission | four-speed, chain final drive |
| Wheelbase | 55.5 in (1,410 mm) |
| Seat height | 31.5 in (800 mm) |
| Manufacturer | Dunstall Motorcycles |
|---|---|
| Production | 1971 |
| Predecessor | Dunstall Commando 750 |
| Engine | 806 cc (49.2 cu in) air-cooled OHV parallel twin |
| Bore / stroke | 76 mm × 89 mm (3.0 in × 3.5 in) |
| Top speed | 201 km/h (125 mph) |
| Power | 52 kW (70 hp) @ 7,000 rpm (claimed) |
| Ignition type | Battery and coil |
| Transmission | Multi-disc clutch, four-speed, chain drive |
| Suspension | Front: telescopic fork Rear: Swingarm |
| Brakes | Front: 2×216 mm × 38 mm (8.5 in × 1.5 in) Disc Rear: 178 mm × 32 mm (7.0 in × 1.25 in) Drum |
| Tires | Front: 3.60−19 Rear: 4.10-10 |
| Wheelbase | 1,410 mm (55.7 in) |
| Dimensions |
W: 740 mm (29 in) |
| Seat height | 760 mm (30 in) |
| Weight | 187 kg (412 lb) (tank 1⁄2 full) (wet) |
| Fuel capacity | 19 l; 4.2 imp gal (5.0 US gal) |
The Dunstall Norton was a Norton motorcycle made by Paul Dunstall, a specialist tuner of 1960s and early 1970s twins originally using some parts from Norton's Domiracer project when the Birmingham factory was closed in 1963. In 1966 Dunstall Motorcycles became a motorcycle manufacturer in its own right, so that Dunstalls could compete in production races, and set a number of world records before sales of the Dunstall Nortons declined in the 1970s consistent with the demise of the British motor cycle industry and corresponding rise in Japanese imports.
Paul Dunstall had already turned his attention to modifying Japanese marques before the collapse of Norton (then part of the fated NVT) in 1974. After several more successful years he left the bike scene to concentrate his attention on property development
Paul Dunstall sold the name in 1982.
Paul Dunstall was a specialist tuner of Norton twins in the 1960s and early 1970s. He started modifying Nortons in 1957, at the age of 18, when he converted a Norton Dominator into a competitive racing motorcycle. As well as fitting a Norton Manx gearbox and wheels, Dunstall balanced the crankshaft and installed the Dominator engine into a Manx Norton frame. With places and two outright wins at Brands Hatch in his first season, after graduating to a higher level with places in his second season at other circuits, Dunstall retired from racing to work in his family's scooter shop and develop performance motorcycle parts
Initially Dunstall conceived simple 'bolt on' modifications such as 'Goldie' pattern straight-through replacement silencers which he called 'Hi-Tune' and exhaust pipes, creating his first catalogue in 1961 and gradually growing the business.
Dunstall built engines for other racers and purchased parts left over from Norton's Domiracer project when the factory closed in 1963, using his know-how to further develop high-performance motorcycles built to order.
From 1966, Dunstall's customers could choose from a standard catalogue offering a range of speed parts, race-styled accessories and complete ready-modified bikes from Norton, BSA, and Triumph in capacities from 500cc upwards
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Wikipedia