RE: Older Kyosho Concept
As to the starter for the 'cone start' - you just need a standard airplane 'spinner' starting cup - like the 'plankers' (almost) all use.
If I remember right, the 'foamy' blades were 515 mm - kindof an odd size: also, I don't think the standard grip feathering bearings were very good for heavier blades (i.e. cut down some standard 550 mm woodies).
On the other hand, the Concept 30 was a lighter heli than my Raptor 30. Begin: Rant: Why can't today's manufacturers take that hint, and make a heli that weighs what a 30 can reliably lift - even on a hot summer day? IMHO, the Raptor 30 should really be called a "Raptor 40" - cuz with a 32, its not very zippy. End: Rant: