Can following info on Norton Frames be available - 1) Featherbed frame - their variations(slimline/wideline) , their suitabilty for british twin cylinder engines - particularly the ROYAL ENFIELD twin engines 2) Source for detailed Drawings with dimensions of the featherbed frames ( for fabrication ) 3) Sources of replica featherbed frame makers 4)Any useful books for above info? Regards Deepak

The slimline came in 1960. It is more comfortable to ride but has less room for the carburetors for some engines. I have never seen an Enfield in a featherbed but so many engines were used Im sure it could be made to fit. I do not know of any available engineering drawings or books which give other than photographs or non scaled diagrams. Replica frames are made all over the world so it would depend where you are. In NZ Ken McIntosh makes frames in Auckland (search manxnorton New Zealand)and Ray Brennan makes lowboy Domiracer frames.