i wouldnt bother with re chroming the raygun silencers as ran my triple with them years ago. the metal is so thin they eventually blow around the outside top of the silencer due to the heat cycles. there was a company in new zealand making fine replicas but i dont know if they are still around.

i had exactly the same issue as the original post with a bsa a7 7 " single sided  rim. spent ages on build. tried reversing the rim with little change and one set of spokes were too long and another slightly too short. i should have sent the whole thing back but i was desperate to get the bike on the road and settled for a bodge job. i was copying the same bsa spoke pattern and i found a post on another forum that had the same issue as me . it seems the rim producer i bought from does not necessarily use the standard rim spoke pattern but can have their own version. my fault for not consulting the manufacturer but a lot wiser to the pitfalls .
on the subject of wheel building , about 30 years ago i went to vic nunns in surbiton [ wheelbuilder ] to buy some replacement broken spokes on my trident and what the friendly old boy did was match the spoke size and length and then hand tap the curl on the end of the spoke  on his old blacksmiths vise. it took him seconds to bend each spoke perfectly.

hi dave,
with my b31 handling issue i changed head races ,front tyre, fork springs then added rebound dampers which all helped but i saved the worst for last and swopped the swing arm bearings for needle rollers and cured.
recently on my a10 i had a horrible high speed veer to the left which i thought was wheel bearings but turned out to be an old tyre on the front wheel. it looked perfect but i suspect didnt like getting warmed up.
nothing worse than poor handling on a straight road at high speed.

just to update if anyone was interested. after making these brackets i found i didnt have the right coil clamps. also they looked clumsy in place. so i drilled a hole in the cross over bracket for each commonly sourced coil clamp to fit with a long bolt and spacer. a lot simpler and hidden by side covers anyway.

thankyou for the dimension drawings spaceman.
however i m a little confused why both brackets are so different.do both brackets locate the horizontal panel mount bracket? which holes?
as they are missing its hard to figure out.
eddie

hi, checked my notes.  i ve used 4043 rods for small welds on bsa crankcases as they were free with the welder . i spent a lot more time on cleaning and prep than welding. there is another rod preferred by other welders which i cant remember but 4043 rods will weld.
i recommend a search on u tube for advise.

i ve never seen a bsa a10 on L plates before. great photo and i wish my a10 was as polished as your dads was.