Has anyone ever built or flown a plane using the Plettenberg motor mounted INSIDE the spinner?

http://www.plettenberg-motoren.net/i...ories-for-xtra

It looks interesting and am thinking of trying to buy one and build a plane with one using a folding prop, 2 or3 blade).
(Sorry, I just like things that are different...no other reason)

Yes, my Lightning (by Jeff Carder) is driven by a Pletti with 2blade folding prop.
Motor keeps very cool!