Having both sets of plans, here's the difference: The KR-1 wing span is 17' 8" versus 20' for the KR-2. Both use 5/8 longerons. Firewall is 1/4. Distance between spars: Depends on when your plans were produced. I have two sets of KR-1 plans and there is a difference between the two sets. I have to find the KR-2 plans (blueprints) to answer the last question so I'll hold off on those measurements for now.
-------Original Message------- From: KR builders and pilots List-Post: [email protected] Date: Sunday, July 06, 2003 6:54:52 AM To: KR builders and pilots Subject: Re: KR>Comparison between the -1 and -2 Gord Sorensen wrote: > Just wondering about some of the differences between the -1 and -2. > 1. What size are the fuselage longerons (5/8" or larger?) > 2. How thick is the plywood on the fuselage and firewall? > 3. Distance between the spars? (Is the -1 wing the same as the -2?) I was hoping that somebody that actually knew what they were talking about would answer this, but I'll give it a shot, and if I'm wrong, I'm sure the truth will eventually come out. I'm pretty sure the -1 and the -2 use exactly the same 5/8" square spruce for fuselage structure, as well as plywood thickness, which is 3/32 for fuselage and quarter inch for firewall. The wings are very similar, if not exactly identical. Looking at the RR website at http://www.fly-kr.com/kr1.htm and http://www.fly-kr.com/kr2.htm, you can see that the KR-2 wing span is almost 4 feet longer and 18 square feet larger, so something's different somewhere. Certainly, if you had a pile of wood to build a KR-1 wing, you wouldn't have anything left over if you decided to build a -2 wing instead. But like I said, I don't even OWN a set of KR-1 plans, although I've heard they're not much to look at. If somebody would send me their set, I'd love to take a look at them, and then promptly return them. Then I'll know how to answer this question the next time around... Mark Langford, Huntsville, AL N56ML "at" hiwaay.net see KR2S project at http://home.hiwaay.net/~langford _______________________________________________ see KRnet list details at http://www.krnet.org/instructions.html .
