If you have an un-restored machine, it may well be worth seeking advice before you start the rebuild.The DVLA has a points scoring system in order to retain an existing registration or obtain an age related number.Make a note of where on the BB the number is and its orientation – for example, is it upright or inverted for reading when lifting the front wheel up with the rear wheel still on the ground?
– initial guidance Sometimes bicycles or frames are found with no makers’ transfers or badges on them –and occasionally with badges/transfers that are not correct!
For example, some BSA frames have BSA and a 3 or 4 figure number cast into the base of the BB, this is just the casting number or perhaps a model number – it is not the frame number.
Nervex, the lug maker, also had their name on their BB lugs with a long design serial number.
Whether the engine is the original is not too important, although it is best if it is still the correct type and capacity.
Graham Scarth, chairman of the Royal Enfield Owners Club UK, has offered to help Royal Enfield owners the world over "date" their Royal Enfield motorcycles.