Lightweight or Heavyweight ??

kookoobean · Post by **kookoobean** » Sat May 03, 2008 9:35 am

Hello All,

Can anyone please let me know what does the term mean "light weight" or "heavy weight" motor?

I am trying to buy some parts and the parts catalog has these two engine types seperated. Which one would mine be?

I have a 1949 AJS 18. This would be the 500cc motor, but i have no idea if its a light weight or a heavy weight.

Thanks in advance to anyone who can assist.

Tim Miller
Dubai, UAE

Duncan · Post by **Duncan** » Sat May 03, 2008 9:50 am

Hi Tim and welcome to the forum

Your bike will be a “heavyweight”, the lightweight were only manufactured after 1958, and were only available in 250cc and 350cc versions.

See “Club / The Bikes / Post War Models” for further details.

http://www.ajs-matchless.com/H_PostWar.asp

This is the spares list you should be looking at in the first instance:

http://archives.jampot.dk/Book/Spares_l ... s_List.pdf

kookoobean · Post by **kookoobean** » Sat May 03, 2008 10:39 am

Hi Duncan,

I really appreciate your reply and information. Its extremely helpful.

Take care and thanks again.

Tim

quote:
Hi Tim and welcome to the forum

Your bike will be a “heavyweight”, the lightweight were only manufactured after 1958, and were only available in 250cc and 350cc versions.

See “Club / The Bikes / Post War Models” for further details.

http://www.ajs-matchless.com/H_PostWar.asp

This is the spares list you should be looking at in the first instance:

http://archives.jampot.dk/Book/Spares_l ... s_List.pdf