Dunstall Motorcycles
Other Resources
Dunstall Owners Mailing list
There is an email mailing list dedicated to all matters to do with Dunstall motorcycles. To join the mailing list, enter your email address below, then click the 'Join List' button:
Fairing Bracket
This is a zip file containing a Microsoft Word'97 document that shows the main mounting bracket for a Dunstall Norton fairing. It has pictures and a description. It is 320 KB in size. Similar fittings were used on all Dunstall fairings.
Dunstall Silencer Identification
| Part No | Model | Description | Size |
|---|---|---|---|
| 1100 | Silencer adaptor for Suzuki GL1000 | Accepts 1133 or 1135 silencers | |
| 1101 | Silencer adaptor for Suzuki GS750 | Accepts 1133 or 1135 silencers | |
| 1132 | Power | To fit 1.25" to 1.5" headers | 51 mm long, 11.5 mm max dia |
| 1133 | Power | To fit 1.5" to 1.75" headers - Honda CB400 | 51 mm long, 11.5 mm max dia |
| 1134 | Patent Decibel | 70 mm long, 10 mm max dia | |
| 1135 | De Luxe | To fit 1.3/8" to 1.5/8" headers | 79 mm long, 10 mm max dia |
| 11381 | Power | For Honda CB750F1 | 51 mm long, 11.5 mm max dia |
| 1139 | De Luxe | For Honda CB550 & CB750F2 | 51 mm long, 11.5 mm max dia |
| 11391 | Power | For Honda CB550F1 & CJ250T | 51 mm long, 11.5 mm max dia |
| 1140 | De Luxe | For Honda CB400 | 79 mm long, 10 mm max dia |
| 1141 | Super | For Honda CB750F1 | 81 mm long, 10 mm max dia |
| 1142 | Super | 76 mm long, 10 mm max dia | |
| 11461 | Power | For Honda CB750F2 | 51 mm long, 11.5 mm max dia |
Dunstall compared the silencers as follows:
| Decibel | Power | DeLuxe | Super | |
|---|---|---|---|---|
| Performance | **** | ***** | **** | **** |
| Noise Output | **** | ***** | *** | * |
Notes For Norton Commando Owners
If you own a Dunstall Commando, or even just a plain Norton Commando, you may find the information contained on the http://www.captain.norton.clara.net/ pages to be of interest and use.
Fitting Instructions for the 810cc Kit
This is an article by Sandy Roca taken from the November 1972 issue of Cycle Magazine. It provides a detailed description on how to fit the 810cc engine kit, the tools required, and the potential problems you might meet.
Fitting Instructions
Exhaust Fitting Instructions for the Honda CB750
This is a reproduction of the original instructions on how to fit a Dunstall Power exhaust system to a Honda CB750.
Fitting Instructions
Patent Specifications
Patent 1063409 - This is for the Decibel silencer. © Crown Copyright 1967
Page 1 [PDF file 92 Kb]
Page 2 [PDF file 79 Kb]
Page 3 [PDF file 13 Kb]
Patent 1404158 - This is for another silencer design that I haven't seen before. © Crown Copyright 1975
Page 1 [PDF file 108 Kb]
Page 2 [PDF file 105 Kb]
Page 3 [PDF file 20 Kb]
www.woodgate.org/dunstall/resources.html / Webmaster / Revised 18th April 2000