Chris, I don't know if your reply was intended for Rick or for me (I am on the West Coast), but I would like to see your FB page, but could not find it. Can you give me a link or some clue to get there? Thanks.
Until next time...Mihaly On Tue, Jul 26, 2022 at 2:04 PM costewart23 via KRnet <krnet@list.krnet.org> wrote: > Rick, I'm using clear select Douglas Fir for my project. I used the AC > 13B, ANC-19 to grade, spent 4 hours going through and finding what was in > spec. If your on the east coast, Mcghee Lumber in Charolette NC has it. > Clear, straight grain, about 10-15 growth rings per inch. It was expensive, > but I refused to pay the excessive shipping that AS was gonna charge, > If your on the facebook page check out my project > > Chris Stewart > N2488C > KR-1XL > > > > Sent from my U.S.Cellular© Smartphone > > > -------- Original message -------- > From: Mihaly Kun via KRnet <krnet@list.krnet.org> > Date: 7/26/22 15:01 (GMT-05:00) > To: krnet@list.krnet.org > Cc: Mihaly Kun <m.ku...@gmail.com> > Subject: Re: KRnet> Newbie questions > > Rick, > > Thanks for the clear explanation, particularly for the first question. > > Regarding the wood, I think I will get the spar and the longeron materials > from Aircraft Spruce and source the rest locally. Luckily there are two > local builders around me, so I can consult them. > > Until next time...Mihaly > > > On Mon, Jul 25, 2022 at 12:11 PM Rick Human via KRnet < > krnet@list.krnet.org> wrote: > >> Mihaly, with regard to your "newbie" questions let me attempt to give you >> answers to what I'm familiar with. >> >> >> >> 1. The FAA will only award an "Homebuilt" an airworthiness certificate in >> the "Amateur" built category. The "Light Sport" designation is only used >> for "factory" built aircraft that have been proven to meet the ASTM >> guidelines. Now any aircraft that meets the LSA criteria for gross weight, >> stall speed and top speed, etc. can be operated by anyone exercising the >> LSA privileges. (Think Cubs, Champs, etc.) >> >> >> >> While some will scoff at an LSA KR-2, IMHO it can be done. Yes, keep the >> empty weight as low as possible, use the same span as the "Diehl" wings >> (24ft) and the original RAF airfoil in the plans. You may also need to use >> vortex generators to meet the stall speed. I don't think by going "small" >> on the engine output is necessary as you limit the top speed by the >> propeller selection. (That's exactly what the Sonex folks do even with the >> 120hp Jabirus'). >> >> >> >> 3. There are substitutions for spruce that have been successfully used in >> the past, douglas fir being the most popular, stronger but heavier. I would >> certainly check around your area for spruce availability, but spruce needs >> to meet some pretty stringent criteria (including the way it's harvested >> comes >> to mind) to be graded "aircraft". As you suggest you could use Aircraft >> spruce in the spars and longerons and something else in the less loaded >> areas. >> >> >> >> Do your research! >> >> >> >> Good luck >> >> >> >> Rick Human >> >> KR-2 N202RH (LSA compliant) >> >> >> >> >> -- >> KRnet mailing list >> KRnet@list.krnet.org >> https://list.krnet.org/mailman/listinfo/krnet >> > -- > KRnet mailing list > KRnet@list.krnet.org > https://list.krnet.org/mailman/listinfo/krnet >
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