They call that Electric Sustainers ?

[Fred]

They have invented what we already know and use...  



Oh yeah, it's full size by the way...  



Full size or models, that is still plain ugly anyway !  

More here : http://www.front-electric-sustainer.com/index.html

[billscottni]

Must admit I prefer the Stemme nosecone and prop that folds away inside to give a far more streamlined approach!!

[Aidan]

I wonder how difficult it would be to fold the blades back into enclosed recesses in the fuselage when not in use?

[billscottni]

I wonder how difficult it would be to fold the blades back into enclosed recesses in the fuselage when not in use?

Aidan,
Do a search for Steem S10. It folds it's blades back in behind the spinner when not in use

[Fred]

Hey Aidan,

In fact the system is really simple ! The blades, instead of folding backward, they are foldind up/downwards, a spring allowing them to fold on themselves (well, at least on the RC version, but I'm pretty sure the system is roughly the same on the full scale one  :?: )

I have some photos of the entire system somewhere from MCM Stemme if interrested  

[JohnPearson]

Hi Fred

The full size boys are always behind us poor rc pilots, front props Ha, Ha, old tech to us glider pilots, what about jet power!!!

[youtube]http://www.youtube.com/v/lWuIt8TEgXo[/youtube]