classic motorcycle forum

As the Triumph factory's production for a particular model year would normally start around August of the preceding year it would seem logical that a large number of the castings would also have been made in the preceding year.

Bruce Main-Smith lists a photocopy manual for C11G

http://www.brucemainsmith.com/frames.html
Ref no:-691/POLKA/534.

Also:
http://freespace.virgin.net/elk.engineering/books.htm

I really don't know about that but possibly TBS or others here will be able to give you more information?  

This website could be of some use?:

http://www.dansmc.com/mc_repaircourse.htm
http://www.dropbears.com/bikelinks/Technical/
Although not specifically for Triumphs these sites have a lot of basic information that goes a long way to understanding the way motorcycles work.

Also:http://www.haynes.co.uk/webapp/wcs/stores/servlet/ProductDisplay?catalogId=10001&storeId=10001&productId=17993&langId=-1

You can either use the DVLA or RAC websites to check vehicle details.

http://www.vehiclelicence.gov.uk/EvlPortalApp/
>Vehicle Enquiry.

http://www.rac.co.uk/web/carbuying/vehicle_data_search/

Lisense plate

Firstly what you should be referring to is 'registration mark' (or number) not 'license (or licence) plate' as you appear to be in the UK.

I'm not totally sure of the correct procedure but as far as I know the present owner has to apply to retain the registration mark of the bike before selling it, the DVLA should then (I think?) issue a non-transferable registration to the bike.
However in order for the owner to do this the vehicle has to be taxed and MOT'd so needs to be roadworthy.

http://www.direct.gov.uk/Motoring/BuyingAndSellingAVehicle/PersonalisedRegAndNumberPlates/PersonalisedRegAndNumPlatesArticles/fs/en?CONTENT_ID=4022576&chk=w0kUgB


If the vehicle isn't registered on a V5C registration document then the present owner may not have any automatic right to use (or keep) the original registration mark?

The DVLA would give you more information about this if no-one here can tell you more.

http://www.dvla.gov.uk/welcome.htm  

  

I did see one in the UK many years ago, I think he was in a museum called sparkford however where this was I have no idea except it is somewhere in the south of England  

The Haynes museum is at Sparkford:http://www.haynesmotormuseum.com/sitemap.php

You could try Elk Engineering? Although not exactly local they may be able to recommend someone closer to you?

Elk Engineering = (UK) 01424 445460