1959 650 rebuld help

Information relating to the Matchless G12 or AJS Model 31 650cc twin
SOHC
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Location: Newzealand

Re: 1959 650 rebuld help

Post by SOHC »

I opened up the gearbox and found 2nd gear is worn though the hardening to the point its not usable, looks like old wood, can someone give me the link for the part numbers for both main and lay shaft 2nd gears?

I carn't find the diagram
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dave16mct
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Re: 1959 650 rebuld help

Post by dave16mct »

Here's a link to the parts list :

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

Also this is a good guide for AMC gearboxes:

http://www.oldbritts.com/gearbox_a.html

Dave
McBob
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Re: 1959 650 rebuld help

Post by McBob »

Hi Rudi,

if you can not find your part from the club http://www.amoc-parts.com/store/comersu ... oducts.asp (is it 040418?) or http://www.amcclassicspares.com/ I have had good results from http://www.gearcutting.co.nz/page.php?id=1, when I had dealings with them (a few of them certainly rode older bikes).
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Duncan
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Re: 1959 650 rebuld help

Post by Duncan »

As your gearbox is an AMC one the Norton dealers will also be able to help with some of the parts:

http://www.rgmnorton.co.uk/
https://andover-norton.co.uk/
http://www.norvilmotorcycle.co.uk/
SOHC
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Location: Newzealand

Re: 1959 650 rebuld help

Post by SOHC »

McBob wrote:Hi Rudi,

if you can not find your part from the club http://www.amoc-parts.com/store/comersu ... oducts.asp (is it 040418?) or http://www.amcclassicspares.com/ I have had good results from http://www.gearcutting.co.nz/page.php?id=1, when I had dealings with them (a few of them certainly rode older bikes).
LOL I worked for Ken Mcintosh for 3 years, I got them to make something a long time ago, was expensive but good
SOHC
Posts: 36
Joined: Tue Mar 07, 2017 11:04 pm
Location: Newzealand

Re: 1959 650 rebuld help

Post by SOHC »

dave16mct wrote:Here's a link to the parts list :

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

Also this is a good guide for AMC gearboxes:

http://www.oldbritts.com/gearbox_a.html

Dave
Cool thank you, thats a good site on how to set up the gearbox,

Jampot dosn't seem to gave any gears?
SOHC
Posts: 36
Joined: Tue Mar 07, 2017 11:04 pm
Location: Newzealand

Re: 1959 650 rebuld help

Post by SOHC »

Duncan wrote:As your gearbox is an AMC one the Norton dealers will also be able to help with some of the parts:

http://www.rgmnorton.co.uk/
https://andover-norton.co.uk/
http://www.norvilmotorcycle.co.uk/


Cool thank you Would it be the same as a Commando?
SOHC
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Re: 1959 650 rebuld help

Post by SOHC »

I will take a few photos of what I have been doing, make things more interesting
SOHC
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Re: 1959 650 rebuld help

Post by SOHC »

Here is the bike when it 1st came to me for a rebuild for a friend

Image


A quick respray

Image

Image

I got the crank halves together now with all new big end and center main bearings, everything turns nicely now unlike when I first opened it up
SOHC
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Location: Newzealand

Re: 1959 650 rebuld help

Post by SOHC »

There is a nice new set of twin pipes to go on the bike, and a rebuilt magneto with new wingdings, I had to replace the layshaft in the gearbox as it was bent and the clutch has new rubbers in the center hub + new plates, the last steel plate I have replaced with a heavy 3mm plate, and the outer pressure plate was from a Triumph, I got the proper AMC one now.

One the new layshaft arrives, I will put the gearbox together and fir that to the engine plates and drop that into the frame in one go as they are bolted to the engine now.
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