Be careful...the cg range may not be the same for a kr2s as a kr2. It is based on percentage of Mean aerodynamic chord and that changes with wing planform and the planform is different for the kr2s. If you have the extensions the range will probably be smaller than 8" to 16". I have started running the numbers for mine and it looks like the aft limit is going to be slightly forward of 16". On Aug 15, 2013 9:05 PM, <Robert7721 at aol.com> wrote:
> 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 > > _______________________________________________ > Search the KRnet Archives at http://tugantek.com/archmailv2-kr/search. > To UNsubscribe from KRnet, send a message to KRnet-leave at list.krnet.org > please see other KRnet info at http://www.krnet.org/info.html > see http://list.krnet.org/mailman/listinfo/krnet_list.krnet.org to change > options >
