The A-Z of Classic Vintage Motorcycles

The A-Z of Motorcycles
The virtual encyclopaedia of motorcycles? The virtual Tragatsch? The virtual museum of motorcycles? This is just an honest attempt at a listing of all motorcycles to share with all motorcyclists...

Lots of interesting history here - learn about thousands of different bikes - just click on any letter of the alphabet.
Hope it brings back some great memories!

http://www.ozebook.com/a-z.htm

To complement the A-Z history of motorcycles (link above), this may be helpful:

Classic Cycle Technical Resources. Link to European models: http://www.classiccycles.org/1978/index.html

Vintage Brochures, Owner's Manuals, Parts Diagrams and Technical Service Manuals for Classic Motorcycles and Automobiles.
Easy to download motorcycle parts and service repair manuals.
Classic motorcycle and automobile ads and brochures from around the world.

YukoNorton said:

The A-Z of Motorcycles
The virtual encyclopaedia of motorcycles? The virtual Tragatsch? The virtual museum of motorcycles? This is just an honest attempt at a listing of all motorcycles to share with all motorcyclists...

Lots of interesting history here - learn about thousands of different bikes - just click on any letter of the alphabet.
Hope it brings back some great memories!

http://www.ozebook.com/a-z.htm

Click to expand...

I was looking at the photo of the AJS 7R 3A. I often wondered why it had two exhaust valves instead of two inlet valves. I think that is the bike Rod Coleman raced successfully back then.

acotrel said:

I often wondered why it had two exhaust valves instead of two inlet valves.

Click to expand...

It is my understanding the reason for 2 exhaust valve is due to the metallurgy of the time. Heat was/is a great enemy of valve springs. By using 2 exhaust valves the springs would be stressed less and they would last longer. It wasn't for performance rather for durability.