Matchless G80CS 1959

Information relating to the Matchless G80 or AJS Model 18 500cc Heavyweight.
User avatar
Pharisee
Member
Posts: 1126
Joined: Tue Mar 15, 2016 8:51 pm
Location: Lincolnshire UK
Contact:

Re: Matchless G80CS 1959

Post by Pharisee »

What's the difference between a GB27 and a GB26?

John
I'm from the Fens.... Gimme six.
Dixter
Posts: 102
Joined: Mon Oct 02, 2017 8:27 pm
Location: Seattle area, WA USA

Re: Matchless G80CS 1959

Post by Dixter »

John, Easy Peasy. Follow this link to Christian's Archives:

http://archives.jampot.dk/technical/Tra ... umbers.pdf

Locate the associated models, and use the Archives to look up the spares lists, which will disclose the ratios.

Ciao, DC
Dick Casey
The RideNut
bjorn
Member
Posts: 69
Joined: Mon Jan 01, 1990 12:00 am
Location: NORWAY

Re: Matchless G80CS 1959

Post by bjorn »

The differences between the GB26 and GB27 are all "external": folding kickstart on the GB27, different gear pedals and a deflector plate between gearbox shell and chain sprocket on the GB27. Otherwise they are identical, same gear ratios, gears, shell, etc.

Bjørn
Capitaine To
Posts: 13
Joined: Mon Mar 16, 2020 8:57 am
Location: Belgium

Re: Matchless G80CS 1959

Post by Capitaine To »

Unfortunately, the gearbox is a GB20 C 53 :(

Image
User avatar
Cjay59_LAPSED
Posts: 520
Joined: Mon Nov 05, 2012 3:43 pm
Location: Cork, Ireland
Contact:

Re: Matchless G80CS 1959

Post by Cjay59_LAPSED »

According to Roy Bacon, AJS & Matchless - The Post War Models, Frame No 8550 was the first number for year starting 9/58 for the G80CS.. so I think that gives you month and year...
raffles
Member
Posts: 609
Joined: Mon Jan 01, 1990 12:00 am
Location: NORTHAMPTONSHIRE UK

Re: Matchless G80CS 1959

Post by raffles »

Hi
now you are a member why not use the clubs dating service you will then know
exactly what engine and frame you have
Tony
Capitaine To
Posts: 13
Joined: Mon Mar 16, 2020 8:57 am
Location: Belgium

Re: Matchless G80CS 1959

Post by Capitaine To »

Cjay59, I don't understand the "9/58", is it september 1958 ? with a chassis number C8551, it would be the second of the year ?

I'm going to have a look for that book.

Unfortunately the data factory for 1959 has disappeared, i can't have info from that point
User avatar
Cjay59_LAPSED
Posts: 520
Joined: Mon Nov 05, 2012 3:43 pm
Location: Cork, Ireland
Contact:

Re: Matchless G80CS 1959

Post by Cjay59_LAPSED »

It's a bit of a bible, for some reason, and others will probably be able to explain why, but yours would be called a "59" even though it was most likely, because of the frame number being only one past the starting number for the year, have been built in/sent out in September 1958, I've included a scan of the page and a picture from the book of a G80CS 1961...for some reason each year started in September....
AJS & Matchless.jpg
Matchless G80CS 1961.jpg
You do not have the required permissions to view the files attached to this post.
Capitaine To
Posts: 13
Joined: Mon Mar 16, 2020 8:57 am
Location: Belgium

Re: Matchless G80CS 1959

Post by Capitaine To »

This is strange... but why not. So it means that they put an engine with a 59 inscription on a bike sold in 1958 ?

I will definitely bought this book .

Thank you for the scans, his there the same infos for the engines in the book ?
User avatar
clive
Member
Posts: 5657
Joined: Mon Jan 01, 1990 12:00 am
Location: LONDON UK

Re: Matchless G80CS 1959

Post by clive »

The factory shut for summer break in August returned in September when they started making the next years model.
clive
if it ain't broke don't fix
Locked