Hi Skyluc,
I like your .60 delta. I drew up plans for a new Demon in 10cc size, and funny enough.. the wing span is 40" same as yours. The area is almost 25% more, it seems like a good size.
I have yet to build the kit prototype, might do so this winter. How are your launches?
One of the flaws in the original Screamin Demon design was locating the forward spar at the CG, limiting the tank size. I have a MkII version designed and in prototyping that has a lot more room for the fuel tank and allows it to move back over the CG a bit.
Cheers,
Mike
yes the size is good, because she is great enough to be viewable, much more than a 40 size, and the launches are very easy, because the traction of the engine is almost twice the weight of the wing