On Thursday, October 15, 2015 at 6:47:32 PM UTC-4, son_of_flubber wrote:
Since this thread has drifted into Sparrowhawk related topics:

Any possibility of an electric sustainer for Sparrowhawk?

Spoke to Greg a yr ago or so and he was considering or at least thought he could build an electric motor himself for a FES model.

As for the underage and several having repairs; I thought that was from the long ground effect and those trying to land the glider before it settled. It floats and landing is ultralight.