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Pietenpol-List: wing washout & dihedral

Posted: Sat Mar 13, 2004 7:32 pm
by matronics
Original Posted By: "DJ Vegh"
DJ asks about wing washout and dihedral for his GN-1.Not sure what the Grega plans call for, but the Pietenpol plans and manual are pretty much for a straight wing. Zero washout and essentially zero dihedral (although the manual suggests rigging the wings with a tad extra 'up' at the tips so that when everything is buttoned down and the wings' weight is released from slings or braces holding them up at rigging, they will relax down to essentially zero dihedral).Others have used a little dihedral to good effect; witness Mike Cuy's and others. There has been plenty of discussion on this and a search on 'dihedral' on the archives will keep you reading for a while.PS- I note several Piet pictures and clips in the latest issue of "To Fly", including Walt Evans, who looks younger than he sounds here on the list. (Did I say that right?)Oscar ZunigaSan Antonio, TXmailto: taildrags(at)hotmail.comwebsite at http://www.flysquirrel.netGet a FREE online computer virus scan from McAfee when you click here. ________________________________________________________________________________

Re: Pietenpol-List: wing washout & dihedral

Posted: Sat Mar 13, 2004 9:00 pm
by matronics
Original Posted By: "Oscar Zuniga"
Thanks for the response gents....I keep forgetting how useful searching the archive is. Just spent the last30 minutes readin olds posts about dihedral.I think I'm gonna run 1.5 of dihedral and 0.3 of washout.DJ VeghN74DVMesa, AZwww.imagedv.com/aircamper----- Original Message -----

Re: Pietenpol-List: wing washout & dihedral

Posted: Sun Mar 14, 2004 8:02 am
by matronics
Original Posted By: "Oscar Zuniga"
Oscar,You said that perfect!! Thank you (the check is in the mail) :)Yeah, it was pretty cool following an article about Paul flying one of myfavorite planes (like my instructor had flown in WWll),And across from the plane I'd like to build some day. The Aeronca C3.For any of you who haven't joined the SAA, it's a great magazine. Ifnothing else I ordered the past issues, which you can get for just adonation! It's some of the best reading on flying ever.Sorry to say that even Kitplane Mag has gone the way of Lancairs, and Metalrockets.As for the dihedral, thats exactly what happened to me. I rigged everythingat zero/flat but in final assy with the weight of the wings, and thetensioning of wires, and the tollerences in strut bolt holes, the wingshave a slight droop in them.walt evansNX140DLPS the pic on the scales was pre-moving wing back.----- Original Message -----