I copied Doug's power set in a Calypso and it worked perfectly. A friend has a Calypso with a Hanno special in it, piped naturally. On the ground we turn the same RPMS with the same prop. ( Either a 12X11 or a 13X9). I've flown both and the flying experience is very similar, but I suspect the OS 61 unwinds a bit more in the air than the Hyperion 4024-10 on 6 cells. I don't have empirical evidence for that, but it seems so.
David's ( doxilia) reduced size plans for the Tiporare make a very nice flying plane in the .25 size. I built one using an OS 25 FX and a 9X6 prop, but I think it would be perfect for the electric set up mentioned by David above. I extended the wing a bit to 50inch span.
Last edited by immelman50; 06-09-2014 at 12:59 PM.
Reason: added information