I have actually never met the owner of the Hangar, only spoken to him on the blower. sadly i have forgotten his name..., but it is at Hoxton park, and there are 2 Opticas in the hangar. love to fly one of those, wonder if the vis would be any better than the Vamp?
as for the Vampire engine, mine is powered by a Rotax 503, pretty bulletproof little engine..
the early 80's ones were powered by the Solo 210 engine??
the new ones now have a 55 hp HKS 4 stroke engine, as for the reliability of this engine, im unsure.