Frame identification

Previously wrote:

Hi there, can anyone help me identify an ES2 plunger frame I have. The frame numbers on the nearside of the headstock are

S M&B +10446 on the top backbone tube is 41679. I need to get a log book, any information on the year and advise that may help me when dealing with the DVLA will be much appreciated as I have never tried to get a log book re-issued before. I am in Jersey, and our vehicle licencing dept will not entertain anything without paperwork.

Many thanks Kev.

Hi Kev,

The Norton numbering system had a prefix letter for the years from 1948 to 1960, 1948 = C through to 1960=R. The plunger frame models were from around 1949 to 1953 and the prefix letter for these years are 1949 (D), 1950 (E), 1951 (F), 1952(G), and 1953(H), followed by number, (10446) and the letter S denotes a single model. The original engine would have had the same number as the frame and is stamped on the drive side of the crankcase below the cylinder barrel.

I hope that this helps, Rob.

I think that you're quoting casting numbers. If the plungers are like the rigids (and I think they are) then the number should be stamped on the lower part of the left hand front fuel tank lug casting.

Previously wrote:

I think that you're quoting casting numbers. If the plungers are like the rigids (and I think they are) then the number should be stamped on the lower part of the left hand front fuel tank lug casting.

Yes the frame number is on the nearside of the headstock casting and the engine number is on the nearside of the crankcase below the cylinder barrel. Both of these numbers and prefix letter would be the same when the machine left the factory, (matching numbers), as I indicated in my original reply, Rob.

Kev, 42701 certainly fits with early 1952.

If you ask the club for machine dating based on this, they'll be able to confirm original gearbox and fork numbers amongst other things (Don't think that you're done with looking for numbers yet !)

Rich.

Previously wrote:

Previously wrote:

I think that you're quoting casting numbers. If the plungers are like the rigids (and I think they are) then the number should be stamped on the lower part of the left hand front fuel tank lug casting.

Hi Richard, I missed the number in the area that you refered too., now it all makes sense, this number was ingrained with rust, but after cleaning it up it reads, G41952,42701 which I pressume is the engine and frame number.

Many thanks for your help

Kev...

Previously wrote:

Following on from this - where are the front fork numbers stamped please

Charles

Hello Charles,

The fork number isstamped on the front of the lower yoke, I have uploaded a picture of this, If you click on the attached link, it will take you to a picture of my 1949 16h fork number.

http://s1101.photobucket.com/albums/g428/fsx3/

Regards,Karl.