Ok - now for some updates.
A lot of the intervening time since I last posted on this thread has been spent researching & trying to track down parts - still not managed to find a second original rear reflector !
As mentioned on p1, I'd already obtained a correct/original Les Leston woodrim steering wheel but now needed to fabricate a suitable hub. I briefly considered modifying an off-the-shelf Moto-Lita hub but quickly ruled it out from an appearance point of view, so I decided to utilise the splined section from an original 911/912/914 wheel.
However, I didn't want to use the splined section from 'any old' wheel since all 914 & 911/912 steering wheels from '69 had part numbers & date codes stamped into them - it therefore had to be a swb (420mm) wheel ...
Luckily the hard plastic (ebonite) 420mm wheels are largely unloved & I was able to find a cheap candidate via DDK (Chris Jury - thanks). Since I only wanted the splined section (& to minimise shipping costs from Germany) I asked Chris just to cut through the spokes & send me the centre section :
After drilling out the rivets & removing the remnants of the spokes & the horn push mount, the splined hub was cleaned up & offered up to the LL wheel to ascertain the relevant dimensions :
The original 904's used a 356A horn push & I had been searching for a suitable used one but they're pretty hard to come by & command fairly high prices so I reluctantly ordered a new repro version from Stoddard's :
So, armed with these components & measurements, I set about producing the relevant drawings for an adapter (to mate the splined section to the wheel) & a trim ring (to mate the 356A horn push to the wheel).
A few weeks' ago I posted on DDK asking members' recommendations for a suitable 'old school' engineering firm to carry out a few fabrication jobs for me. I received quite a few excellent suggestions including an offer from Andy Haas (haasad) to undertake the work for me - so I sent him the splined hub, horn button & drawings.
After a (very) short space of time I received these perfectly-fabricated parts - exactly what I wanted !
- & after assembling:
That's another job ticked off ...