Need to post a correction on the G limit.
I looked it up in the KR manual. It is +- 7 G at 800 pounds. To be specific on CG range, per the KR manual it states 15 - 35% of wing cord, or 8 -16" aft of the leading edge for the KR2 wing. I won't argue the points being made by others on the real range that should be used. Every plane is its owners creation. I don't play around with loading mine pass its aft limit either. But I do carry a passenger every now and then and have never had any issue. Looks like Mark was 2" past the aft limit in his Corvair loading incident - I won't question that as pushing the limits. Thanks, Rob -----Original Message----- From: Robert7721 <Robert7721 at aol.com> To: krnet <krnet at list.krnet.org> Sent: Thu, Aug 15, 2013 9:05 pm Subject: Re: KR2 CG Range Alan, I've got link to a spreadsheet on my web site for the C.G. Range. However I do have a KR2S so yours might be slightly different. http://www.robert7721.com/WeighIn.html Basically C.G Range is 8 - 16" of the wing cord. For my plane I used the firewall as the 0 point. Therefore the wing CG range is 22.5 to 30.5 inches (relative to the firewall). That is the same for either KR2 or KR2S. Some will say not to use the back 2". But I believe you can with the KR2S. Frame G limits are approx +- 6 G at 900 pounds if I recall correctly. If you are willing to lower your G rating you can up the max load - but be careful. More weight tends to go aft in the KR2 it seems and this is the real issue. Thanks, Rob Schmitt N1852Z In a message dated 8/15/2013 8:19:24 P.M. Central Daylight Time, beaglea109 at icloud.com writes: Hello all, I have recently joined this august group due to my purchase of a KR2 (frame # 2001). I have fitted a new motor (Jabiru 2200 85hp), repaired and tweaked the overall airframe to ensure it is airworthy. I have now flown it for 7.5hrs and have decided the aircraft has many characteristics of a WW2 fighter (ex RAAF FLTLT). Therefore, and to the delight of all the kids that see it, I have painted it in the colours of a P51 Mustang!! The colours will be familiar to Mustang enthusiasts as the colour scheme of the 47th Fighter Squadron, 15th Fighter Group, VIIth Fighter Command, 20th U.S. Army Air Force South Field, Iwo Jima, Kazan Islands, Japan, dated 1945. I wonder if anyone could help me with a few questions I have: 1. What is the preferred CG range for KR2's? 2. What are the frame 'G' limits? 3. What have people found is a successful tail wheel fit out as an alternative to the standard system. The aircraft is fun to fly in every respect EXCEPT the landing roll, especially in a crosswind. I have fitted a Matso 6" as seen in the photo, but have not yet had a chance to test fly it. As soon as I do, I will report back to the group. P.S. The aircraft in the back ground is a beautifully restored Tiger Moth owned by Graeme Atchinson, a local flying identity here in Townsville. I fly the Tiger regularly and can say it is a stable kitten in the ground compared to the KR2!! Thank you all for a marvellous network. Regards, Alan Alan Middleton Bluewater Airport Townsville, Australia +61407356948
