At 06:04 PM 1/5/06, JAMES C FERRIS wrote: >I have looked at this also, and on the list of performance of the flying >KR-2's started by Orma about half of them have performance in the sport >aircraft rules,
I suspect these numbers are either light, or with flaps, or both. LSA requires stall at gross, clean. >however it would be better if we redesigned the aircraft >to fit the rules and called it something else only useding the Ken Rand >construction techniques. I am building a KR-2S but may lose my medical in >the near future, that's why I was looking to increase the wing area and >span to improve the stall and climb speeds. For anyone playing with this idea, there is some good information here: http://zenithair.com/kit-data/ht-86-8.html Down near the bottom of the page are formula for estimating speed and stall. You need CLmax for the stall estimate; according to http://www.krnet.org/as504x/design.html the CLmax for the AS5045/8 wings is 1.28 clean. Keep in mind that LSA requires the 52 mph max stall speed clean, and at gross weight. Playing with this info, it looks like you would need to be at KR1 max gross weight (or a bit less), and KR2S wing area (or a bit more), to even come close to LSA specifications. That is still do-able, though, if you are willing to have a single-place, VW powered, KR2S. Regards, RonB
