Hi Stewart,
Unfortunately the prototype 1cc was lost in Phoenix on the way home from the SAM Champs last year.
It really was a beaut little engine. I ran it on an 8x3.5 APC electric prop. 8000 with the silencer, 8300 without. Very easy to start and set and only 65gm with silencer.
I still have all the drawings and details, but don't have any immediate plans to make a batch of them.
Might see you in Muswellbrook.
best regards
Dave