I work in a robotics lab and we purchased a custom built robotic helicopter for research. We just had a tail strike last week, and now i'm looking for parts for repairs (the company we bought from marks up all their spares).

I've heard it might be an electric conversion of a gas powered Hirobo. I think the body is custom, but i know the main rotor head and tail rotor head are not. The tail grips are marked "Hirobo 1994". No markings on the main rotor grips. I've attached some pics. Can someone please help me identify the main/tail rotor head?

Have you considered to contact the USdistributor for Hirobo? http://www.modelrectifier.com/index.asp