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#150875 - 10/02/06 4:39 pm AJS Numbers ?  
Joined: Dec 2004
Posts: 1,280
Skeet Offline
BritBike Forum member
Skeet  Offline
BritBike Forum member

Joined: Dec 2004
Posts: 1,280
Orleans Massachusetts
Hello All,
Last week the Norton members of this site were very helpful regarding a 1952 Model 7 Dominator. Now find myself trying to help out on a 1951 AJS single and need some info. On the crankcase are located the numbers 51/18 16623. We understand this to be a 1951 500 single. Is this correct? Any ideas on a model number etc.? On the frame are 2 numbers on each side. One is #64106, the other looks like #01367. Is one of these a serial number and the other a part number. If this is correct, which is which? Also there are British license plates attasched to it. Number BA 9671. I understand you can tell from this, what part of England this bike originated from. Its not missing too much and it looks like it was an older restoration. The bike is a little beauty and I can't wait to hear it fired up. I actually think the owner might ride it from time to time. As always any help generated would be greatly appreciated.
Skeet


Skeet Enjoy life....it has an expiration date..
1964 Hornet
1970 TR6R
1971 Norton
1972 XLH
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#150876 - 10/03/06 7:37 pm Re: AJS Numbers ?  
Joined: Oct 2006
Posts: 2
stumper Offline
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stumper  Offline
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Joined: Oct 2006
Posts: 2
Denmark, Europe
I think that the number "64106" will be your framenumber from midth-summer 1951. From sept. 1950 framenumbers started 59744 - ending 74099 in sept. 1951 - all these sold as 1951-models. The number on the crankcase tell's us:
51 = year, 18 = Model (497cc OHV) 16623 = serial no. Your bike was also sold as Matchless G80 by AMC.
Kind Regards

#150877 - 10/09/06 12:12 pm Re: AJS Numbers ?  
Joined: Dec 2004
Posts: 1,280
Skeet Offline
BritBike Forum member
Skeet  Offline
BritBike Forum member

Joined: Dec 2004
Posts: 1,280
Orleans Massachusetts
Stumper,
Thanks for the number info on this little gem. About to really get into the thing with carb setup and other minor issues. I do have another question though pertaining to electrics. The owner claims that he read that the 6 volt battery system (the battery is missing) was setup with NEGATIVE ground. I just want to check, because as far as I know most of these old machines were set up POSITIVE ground.
Thanks again,
Skeet


Skeet Enjoy life....it has an expiration date..
1964 Hornet
1970 TR6R
1971 Norton
1972 XLH
#150878 - 10/09/06 1:33 pm Re: AJS Numbers ?  
Joined: Jul 2005
Posts: 1,919
John RGS Offline
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John RGS  Offline
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Joined: Jul 2005
Posts: 1,919
new jersey usa
Skeet, did you know that the Question Of the Day post is giving away parts books for the very bike you are talking about absolutly free! Factory original no less! And if Stumper is correct, there are two for a '51 G80.


,_o
_ -\_<,
(*)/'(*)

NOPGS #2
#150879 - 10/10/06 2:49 am Re: AJS Numbers ?  
Joined: Aug 2001
Posts: 1,921
Rohan Offline
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Rohan  Offline
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Joined: Aug 2001
Posts: 1,921
Oztralia
Up until the early 50s pretty much all Brit bikes were negative earth. I'm not sure when AJS & Matchy changed to +ve earth, a wander through the wiring diagrams of the era may show when this was. Doesn't make a scrap of difference, as long as everything is wired accordingly and you tell the genny and regulator what each is doing... ?

opethiselps.

#150880 - 01/04/07 12:49 am Re: AJS Numbers ?  
Joined: Dec 2004
Posts: 1,280
Skeet Offline
BritBike Forum member
Skeet  Offline
BritBike Forum member

Joined: Dec 2004
Posts: 1,280
Orleans Massachusetts
Hi All again,
Decided to reopen this post to get another question answered. Specifically, where can we get a parts manual for this 1951 Model 18. Tried to get one from Domiracer but they don't have one. We have experienced trouble with the kickstart mechanism and found a broken & also a bent stud. Both these have been replaced but we believe it could possibly be missing a shim or spacer. Would really like to see a breakdown of whats supposed to be in there. Any help would as always be greatly appreciated. John RGS - Unfortunately could'nt answer your question on what is it. Maybe if the winner reads this they may be able to help us out and make us a copy of the gearbox/kickstarter areas.
Skeet


Skeet Enjoy life....it has an expiration date..
1964 Hornet
1970 TR6R
1971 Norton
1972 XLH
#150881 - 03/19/07 7:49 pm Re: AJS Numbers ?  
Joined: Sep 2006
Posts: 63
Naozar R. Garda Offline
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Naozar R. Garda  Offline
BritBike Forum

Joined: Sep 2006
Posts: 63
Bangalore, India
Try this link. http://217.157.196.176:8181/ajs/
It has a section where you can get the parts manual. Some server problem at the moment so i can't open it so i can't say whether the specific model you are looking for is there, but it has loads of useful info and probably you'll find what you want. I got the Instuction book and Parts manual for my 1955 G3LS from there. Hope it's eurika for you !! Naozar R. Garda

#150882 - 04/10/08 4:29 pm Re: AJS Numbers ?  
Joined: Apr 2007
Posts: 36
propwash Offline
BritBike Forum
propwash  Offline
BritBike Forum

Joined: Apr 2007
Posts: 36
quinlan tx
Hello again Naozar,and all,I tried to log on to the AJS site and can't.anyone know why? another site with spares numbers and manuals?

#150883 - 04/10/08 5:25 pm Re: AJS Numbers ?  
Joined: Jun 2002
Posts: 906
Peter Quick Online content
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Peter Quick  Online Content

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Joined: Jun 2002
Posts: 906
Jaffrey, NH, USA
For all sorts of AJS and Matchless information for free check out this link. manuals, spares books, technical info, etc... A real gold mine of info!
http://archives.jampot.dk/ Peter bigt


check out: www.bsaunitsingles.com
2500 BSA part numbers with inventory in stock just for the unit singles!
#150884 - 04/10/08 7:38 pm Re: AJS Numbers ?  
Joined: Feb 2007
Posts: 586
Don M. Offline
BritBike Forum member
Don M.  Offline
BritBike Forum member

Joined: Feb 2007
Posts: 586
California
The first web address posted has been superceded by the http://archives.jampot.dk/ which is now correct.

A 1951 Model 18 is an AJS 500cc touring version, not a Matchless G80. They are almost identical, except for finish & badge. (Badge Engineering at its' most blatant.)

The gearbox on 1951 touring machines is a Burman CP. Scramblers for that year only had a sturdier version of the Burman.

Any numbers you find beginning with 0 are part numbers.

Cheers, Don.

#150885 - 04/11/08 12:40 pm Re: AJS Numbers ?  
Joined: Dec 2004
Posts: 1,280
Skeet Offline
BritBike Forum member
Skeet  Offline
BritBike Forum member

Joined: Dec 2004
Posts: 1,280
Orleans Massachusetts
Many thanks to all who responded to my questions. I almost forgot about this post as a couple of weeks ago it was returned to its owner with all of its serious issues cleared up. Runs super. A special thank you to the Triumph moderator, John Healy for fixing a badly butchered carb slide. Its now up to the owner who runs a body shop to take care of the cosmetics. Apparently he has those nice tank decals, so time will tell. I'll post a picture on here when he finishes it up. Again, many thanks.
Skeet


Skeet Enjoy life....it has an expiration date..
1964 Hornet
1970 TR6R
1971 Norton
1972 XLH

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