Also blasted and painted the yokes, Clip on brackets, sump and rear brake torque assembley.
Gloss black is Simoniz Engine Enamel,
Matt black top yoke is P1J
Silver is Simoniz Engine Enamel

I knew the rear disc was a bit thin, so ordered a replacement, while I was removing the bolts from the old disc today I noticed this:



On closer inspection it looks like there is cracks in similar places all round the disc - could have been nasty!
Only issue with the new disc is that its a bit thicker than the original at the mounting points, meaning the original bolts are about 3mm too short so they don't fully engage with the end of the nuts

Cleaned up and re-fitted the rear hub, looking more like a bike again, :

Is that a bmw shock with hrc linkage?

Yes mate, very low miles shock and linkage was less money than a bog standard Nitron and has way more adjustability, that was my reasoning anyway.

Been busy with my ebay cut system, the front collars were non existant and the whole thing was pretty grotty.
Scrounged a couple of small lengths of 1 1/2" stainless tube and some filler rods off of a mate for a pint, I ground out the old mild steel inserts:



Then cut the new pipe to length and Tig welded in place, My first go at welding stainless, its not visually perfect, but not so bad:



I then polished up the rest of the system (did the visible parts more than non visible) and fitted along with new gaskets all round:





Not bad for £18 inc link pipe! The trouble is that with the newly painted side covers, polished exhaust and painted sump, it really shows off the tired bits of the engine. At the moment I don't think there's any value in pulling the engine out to tart it up, especially as it will mostly be used as a track bike. I'll wait until it has to come out.
Just need to score another length of pipe and I can do my standard system prior to storage.

Cleaned and rebuilt the carbs the other day, parts from Rick O include some 1mm needle shims, 118 / 120 mains and a liketek o ring kit. All floats checked - had to adjust one by about a mm. Curiously the holes in the slides are already 3mm (the guide states drill out to 2.5?) Just need to bench balance them, I'll probably also do them by vacuum when on the engine.
They weren't in too bad nick, except all of the screws which anchor them together were loose, so they must have been miles out of synch when last run.

Your welds look better than the stock ones at the y...

Fancy doing another ?!

You're probably better off finding someone local, postage would be a pain and expensive. I know a guy who has a fabrication business would have probably done it for £15 cash, but fancied having a go myself. There's lots of these little gems about, they just have to be sought out, most aren't online, its just word of mouth. There's a few of us bikers who know each other in town, most into old bikes, and i've got alot of contacts through them. Get plating done in exchange for beer, machining in exchange for welding etc.

Today I've been mostly rebuilding the rear caliper and blasting / painting stuff.
Starting with the coolant system. Someone along the line had fitted an Ally drain plug to the water pump cover which naturally sheared when I tried to remove it



I drillet it out and fitted an M6 helicoil



As you can see, the covers were a little manky



So they went for a trip to the blasting cabinet



Then got painted with Simoniz engine enamel

I fitted the refurbed subframe and dug the exhaust bracket out



Its seen better days, so I used a scotchbrite wheel on my die grinder, followed by a session on the polishing wheel