Original Posted By:
I was wondering if anyone has taken something like (2) 3" wide pieces of spruce and edge glued them together to make spar material. I believe this is acceptable after reading the EAA "Wood" book. I called Mccormicks to check into their lumber supply and they have a lot of 1x9 material - so with 4 3/4" spars you'd need to laminate the second part or you couldn't use the rest of the board for spar. $9/board foot. I ordered (4) 16 footers for the fuselage and tail section and nearly all of the stuff was spar quality even without handpicking. This place is located in Madison=2C WI - 1 hour north of Brodhead... Guess when I'm going to get my spars See you all at Brodhead!Tom B.________________________________________________________________________________
Original Posted By: "Vincent Dunn"
Provided it is done correctly, laminated wood is as strong or stronger than a monolithicpiece of wood. Bill C.Read this topic online here:http://forums.matronics.com/viewtopic.p ... ___Subject: Pietenpol-List: Re: lamintated spar
Original Posted By: "Vincent Dunn"
Hey Tom. Re your 2009 lam spar post. How did that work out? I'm thinking of laminatingtwo pieces of 6" by half inch together on the face then trimming to size.Got any advice?--------Vincent DunnSalem Oregonvincentkdunn(at)yahoo.comRead this topic online here:http://forums.matronics.com/viewtopic.p ... ___Subject: Pietenpol-List: Re: lamintated spar
Original Posted By: "Vincent Dunn"
Bill Church,Thanks for your reply. When you say "done properly" do you mean there is a " bythe book" method for laminating? I'm completely unfamiliar. Is there a book orreference material you'd suggest I study to lean about lamination methods? Thanksagain,--------Vincent DunnSalem Oregonvincentkdunn(at)yahoo.comRead this topic online here:http://forums.matronics.com/viewtopic.p ... ___Subject: Pietenpol-List: Re: lamintated spar
Original Posted By: "taildrags"
Ray: my airplane originally flew with a metal prop so I'm sure there is somethingin the logbooks about the prop size and weight. Corky would have had to doa new W&B after the prop was changed to wood. If it would help you to have theinformation on the weight difference, I can dig out the logbooks on 41CC andsee what I find there. Here's how it looked back then: http://www.flysquirrel.net/piets/NX41CC ... -----Oscar ZunigaMedford, ORAir Camper NX41CC "Scout"A75 power, 72x36 Culver propRead this topic online here:http://forums.matronics.com/viewtopic.p ... ___Subject: Pietenpol-List: Re: lamintated spar
Original Posted By: "Vincent Dunn"
Paul; interesting woodwork on those spars! I would be very curious to know howthat composite I-beam spar compares weight-wise to a solid spar and a routedspar. It would be easy enough to weigh short pieces of each, say maybe 6" long,to get an estimate of how much laminated spars weigh. By any chance did youhave any cutoffs from the ends of those spars, or did you make them to nearlyfinished length?--------Oscar ZunigaMedford, ORAir Camper NX41CC "Scout"A75 power, 72x36 Culver propRead this topic online here:http://forums.matronics.com/viewtopic.p ... ___Subject: Pietenpol-List: Re: one/three piece wing
Original Posted By: "USMC20C"
Check out Paul Donahue's pictures posted today(12/20) on the thread "laminatedspars". This seems like a good alternative to scarfing spar sections together.A person could make a laminated spar the full length of a single wing designthat way.--------Vincent DunnSalem Oregonvincentkdunn(at)yahoo.comRead this topic online here:http://forums.matronics.com/viewtopic.p ... ___Subject: Pietenpol-List: Re: one/three piece wing
Original Posted By: "Lostman"
I would build the one piece wing if I had the room, if I had it to do over.Read this topic online here:http://forums.matronics.com/viewtopic.p ... ___Subject: Pietenpol-List: Re: lamintated spar
See you all at Brodhead!Tom B.________________________________________________________________________________