I love projects!
I acquired this one many years ago from a (late) friend. He was asking around if anyone wanted a Blackburne twin, and although it sounded interesting I had enough stuff on my plate. Later I tripped over part of the frame in his shed. "What's this Chris?" "That's part of the Blackburne frame" "But it looks Australian-made?"
Now I've got a bit of an Australian-made thing going on...
We dug out the rest of it, and sure enough the Adelaide-made Victor Blackburne identity unfolded. So far as I can see there was only one 8 hp twin made, c1921, and it went to a guy called Lenny Brooks who was an active member of the MCC of South Australia. He rode it in club events, won a fuel economy trial, even raced it on Sellick's Beach.
The reason my friend had the bike is that he was disposing of the estate of an eccentric Adelaide collector/hoarder. He dismantled everything he had, and the story was that his wife used to wrap random bits in newspaper and throw them in the bin. One of the heads had gone missing, and while all the single and twin heads are similar, I can report that there are many subtly different versions!
Anyway, I now have a matching head, and most of the stuff needed to restore the bike, even a nice period 60 degree magneto. The motor was seized, but I've managed to free it up and get it apart. With luck I'll be able to re-use the cast iron pistons. The twin has a built-up crank with roller big ends. It's a nicely-made thing, and the flywheel is almost unbelievably huge.
Fun!
Leon