Brodhead Pietenpol Association

Original Posted By: mboynton(at)excite.com
Yes the April issue of the experimenter has article onaluminum spars taken from a book I think the nameof the book was Stress without Tears and can beordered from the EAA, does comparison on Ibeam (wood) solid spar, box spar, and similarAluminum spars which of course win in thestrength to weight all out testing. I hope youlike math!-----Original Message-----

Original Posted By: kyle ray
Subject: Pietenpol-List: Aluminum spars>To all:>>Has anyone done any research on aluminum v. wood spars. I'm curious about>feasability, weight, cost, strength, compatability with wooden ribs, andany>other pertinent issues that should be raised. I know that Wag-Aero offers>this option with their Cub-like kits.>>Mark Boynton>Gilbert, Arizona>>>_______________________________________________________>________________________________________________________________________________

Original Posted By: mboynton(at)excite.com
To all:Has anyone done any research on aluminum v. wood spars. I'm curious aboutfeasability, weight, cost, strength, compatability with wooden ribs, and anyother pertinent issues that should be raised. I know that Wag-Aero offersthis option with their Cub-like kits.Mark BoyntonGilbert, Arizona________________________________________________________________________________

Original Posted By:> mboynton(at)excite.com
Kyle,Thanks for the info.Mark BoyntonGilbert, Arizona> Yes the April issue of the experimenter has article on> aluminum spars taken from a book I think the name> of the book was Stress without Tears and can be> ordered from the EAA, does comparison on I> beam (wood) solid spar, box spar, and similar> Aluminum spars which of course win in the> strength to weight all out testing. I hope you> like math!> > > -----Original Message-----

Original Posted By: TBYH(at)aol.com
Someone (Ted Brusseau???) wrote an article in the latest Brodhead Pietenpol AssociationNewsletter about a plans change to aluminum spars and the attendant problemsthat an "improvement" to the plans can cause. Seems like we've been fightingthis battle for years and years.Anyway..... I have a friend who has built a one-piece wing and he used aluminumspars so, after reading the article, he's really concerned. He has no computerso I am writing on his behalf. Will the author of the article please contactme directly to answer some questions regarding the spar material that was usedin the Piet (NOT) that you tested.Thanks-Larry________________________________________________________________________________

Original Posted By: Galen Hutcheson
I'm just about ready ready to start on my wings (3 piece wing) for my piet. Allmy ribs are done (wood). I'm thinking about using possible aluminum spars.Isthere anyone who has been building and now flying with such a set up?Thanks for the input.Bernie P. LefebvreVal d'Or, Quebec________________________________________________________________________________Date: Thu, 3 Feb 2005 16:07:37 -0800 (PST)

Original Posted By: "DJ Vegh"
Subject: Re: Pietenpol-List: Aluminum sparsBernie,Like I said in my last post - Your life is at stake here...use the wood spars, and carry on with the construction of a Very Fine design.Chuck GantzerNX770CGWichita KS________________________________________________________________________________

Original Posted By: owner-pietenpol-list-server(at)matronics.com
All I can say is "Why?"-----Original Message-----

Original Posted By: Ken Beanlands
> Subject: Aluminum spars> > > >To all:> >> >Has anyone done any research on aluminum v. wood spars. I'm curiousabout> >feasability, weight, cost, strength, compatability with wooden ribs, and> any> >other pertinent issues that should be raised. I know that Wag-Aerooffers> >this option with their Cub-like kits.> >> >Mark Boynton> >Gilbert, Arizona> >> >> >> >> >_______________________________________________________> >> ________________________________________________________________________________