Why not just build a KR-1B? Stretch the fuse, build the wing with the different airfoil [take a pick], maybe install a vair. I've been thinking about this for some time. The plans are a retrofit to an existing KR1, but I think a purpose built 1B would be far superior, sort of a poor man's U-2. Maybe bicycle mains with wing protection gear. As we age, it's time to plan ahead.
Ed J ----- Original Message ----- From: "Ron Butterfield" <rbutterfi...@mebtel.net> To: "KRnet" <kr...@mylist.net> Sent: Friday, January 06, 2006 8:19 AM Subject: Re: KR> kr2 sport pilot > 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 > > > _______________________________________ > Search the KRnet Archives at http://www.maddyhome.com/krsrch/index.jsp > to UNsubscribe from KRnet, send a message to krnet-le...@mylist.net > please see other KRnet info at http://www.krnet.org/info.html >
