Dunstall Motorcycles
1969 Dunstall Norton Export
Brief Specification
- Norton 750 Engine
- Bore 73mm, Stroke 89mm
- Capacity 745cc
- Hand finished and polished ports
- Lightened and polished rockers
- Special "H 18 S" material valves
- Bronze "Hi-Dural 5" valve guides
- Special dual rate valve springs
- Finned induction manifolds
- 10 to 1 compression, spun cast pistons
- Lucas Capacitor ignition system
- Lightened camfollowers
- Street high lift camshaft
- Paired Amal 932/901 type concentric carburettors
- Flexible forced oil feed to rockers
- Champion N6Y wide heat range plugs
- Output 66 b.h.p at 7,000 rpm
Cycle Parts
- Duplex "Featherbed" frame, crome plated
- "Road-holder" forks fitted with twin 9" hydraulic disc front brake
- Swept back, balanced exhuast system
- "Decibel" silencers
- Rear mounted footrest and controls
- De-Luxe or G.T. fairing (choice of colours)
- 3½ gallon lowline, 4 gallon or 5 gallon tank (choice of colours)
- G.T. dual-seat incorporating mudguard, toolbox and number plate (choice of colours)
- Grand Prix, Manx or glass-fibre mudguard (choice of colours)
- Clip-on handlebars
- Alloy ball-ended control levers
- Steering damper assembly
- Alloy fork top yoke
- Alloy wheel rims
- Avon G.P. rear tyre
- Front fork and suspension gaiters
- Chromium plated chaincase, chainguard, oil tank and battery box
- The following choice of colours are available:- red, yellow, racing green, silver or blue
Gearbox
|
Four Speed
Semi Close Ratio |
Alternative
Ratios |
||||
|---|---|---|---|---|---|
| Gear | Ratio | Speed | Gear | Ratio | Speed |
| Top | 4.22 | 131 mph | Top | 4.53 | 124 mph |
| Third | 5.14 | 109 mph | Third | 5.50 | 104 mph |
| Second | 7.12 | 78 mph | Second | 7.65 | 74 mph |
| First | 10.75 | 52 mph | First | 11.50 | 49 mph |
www.woodgate.org/dunstall/69nor3.html / Webmaster / Revised 24th February 2000