At 03:33 PM 7/11/2016, you wrote: >if gross weight of say, 800lbs, what would the span need to be? ++++++++++++++++++++++++++++++++++++++++++++++++++
I calculate 36 feet span but I can't imagine a kr1 motor glider having a gross weight of 800 pounds !!!! I doubt the spars will handle a 36 foot span. 36 X 36 = 1290 sq ft X .62 = 799.8 pounds Then again, I'm not an engineer. So , what is the span of a KR1 motor glider?????? That will give the real numbers, not a guess. Larry Flesner