Actually, that spar will support that and a fair bit more. My KR2SD is going to be right on the 1200lb MTOW allowable in the AU ultralight category. Fortunately we don't have the same kinds of restrictions in that class as you in the US have in the LSA category. I may yet bite the bullett and make it a GA reg, but I'd prefer to keep it in the Ultralight category if I can. I'll have to do some fairly interesting work to keep the CG in check but the numbers I've got so far (until my usual comp that I do all my design and analysis work on went down) check out OK. One of the mods is a variable incidence horizontal instead of the standard trim tab to give a wider trim range and increase the CG limits which will add a little bit of extra weight right at the back to help counteract the longer nose. I'll also be looking at a shorter engine mount, and possibly a smaller engine. I may still go with a corvair engine, but I'm also looking favorably at a rotary or maybe even an all alloy EFI Rover V8 which weighs in at only 18lbs heavier than the corvair (wet) for a lot of extra neddies. I will not be using a header tank, but I'll be making fairly substantial wing tanks, and any cargo will go in the back. I'm shooting for having the CG envelope with minimum load (one person, no gear, no useable fuel) to be right at the front of the CG envelope. Fuel is to load around the CG to have minimal shift with burn. Crew sit on the CG line and baggage loading is to bring the CG aft. According to the preliminary calcs, at full load, fuel, 2 NATO people and 35lbs of baggage, I'm still in front of the aft CG limit. Fortunately I'm lucky enough to fit nicely into the standard person parameters. Cheers. Peter Bancks [email protected] http://www.homebuiltairplanes.com http://canardaviationforum.dmt.net
----- Original Message ----- From: "Wesley Scott" <[email protected]> To: "KRnet" <[email protected]> Sent: Monday, August 09, 2004 12:13 AM Subject: Re: KR> KR2S Sport pilot eligible??? > A 1300# KR isn't the point. The wing spar won't support that much of a > weight increase. > > The question is: Will a KR2 AT THE RR MAX WEIGHT OF 900 POUNDS stall at > 51.785 mph or less and will a KR2S at the RR max weight of 980 pounds? > Given the RR published stall speed is 52mph. > > And lest we forget: Will the KR1 at a max wt of 750 pounds? It also has a > published stall of 52mph. > > -- > wesley scott > [email protected] > > ----- Original Message ----- > From: "Dan Heath" <[email protected]> > To: <[email protected]> > Sent: Sunday, August 08, 2004 5:46 AM > Subject: Re: KR> KR2S Sport pilot eligible??? > > > > That is my point exactly. You will not be able to get the stall speed on a > > KR with a liftoff weight of 1300#, down to the required speed. > > > > I guess what the persons who want a KR that is Sport Pilot Eligible, need > is > > another new wing that is the opposite of the old new wing. One designed > for > > high lift and low speed. > > > > > > > > _______________________________________ > to UNsubscribe from KRnet, send a message to [email protected] > please see other KRnet info at http://www.krnet.org/info.html > >
