Hi John,the short throttle was used on the 3HW,the spare parts list for contract C/13948 has part no 16/023 twist grip rubber,the next contract S1246 has part no 16/023C twist grip canvas,shown below is the illustration from parts list S1246 which show the new part numbers with the C (for canvas) added,though they never updated the illustration which is common in the Triumph parts books,they used this same illustration in all the later parts books,later contracts had the BSA 7/8 inch handle bars and controls with BSA part numbers,if your bike is an early model it would have the 1 inch bars and levers,could you let us know the frame number as a lot of changes took place during the different contracts.
These illustrations can confuse things! The illustration remains the same for contract S2114 (twistgrip 16/006) but the list further on now quotes 16/102C for the twistgrip assembly.
Another anomaly that I found is the air and mag levers for Contract S5340 (my bike) are listed as the type with the two screws and saddle clamp as opposed to the pivot type clamp shown. I hunted some down after already finding some pivot levers.
However I still think the twistgrip looks long in some pictures??? Ron
