---------------------------------------------------------- Pietenpol-List Digest Archive --- Total Messages Posted Sat 12/15/07: 7 ---------------------------------------------------------- Today's Message Index: ---------------------- 1. 04:43 AM - jury strut bracket placement (TGSTONE236@aol.com) 2. 05:34 AM - Re: jury strut bracket placement (gcardinal) 3. 06:56 AM - Re: jury strut bracket placement (Don Emch) 4. 11:11 AM - Aileron bearings (Jack T. Textor) 5. 11:41 AM - cowling construction (Oscar Zuniga) 6. 11:52 AM - Fly in at DLZ next summer (shad bell) 7. 05:25 PM - Re: cowling construction (Gordon Bowen) ________________________________ Message 1 _____________________________________ Time: 04:43:36 AM PST US From: TGSTONE236@aol.com Subject: Pietenpol-List: jury strut bracket placement Since the original plans doesn't have anything on jury struts. What is the distance between the jury strut bracket and the wing strut bracket? Ted Stone **************************************See AOL's top rated recipes (http://food.aol.com/top-rated-recipes?NCID=aoltop00030000000004) ________________________________ Message 2 _____________________________________ Time: 05:34:08 AM PST US From: "gcardinal" Subject: Re: Pietenpol-List: jury strut bracket placement On NX18235 the jury struts are at the mid-point of the lift strut. Some people will recommend placing the jury strut slightly offset from the mid-point to avoid harmonic resonance but in 120 hours of flying I have yet to notice any lift strut vibration with the jury strut located at the mid-point. Greg Cardinal Minneapolis ----- Original Message ----- From: TGSTONE236@aol.com To: pietenpol-list@matronics.com Sent: Saturday, December 15, 2007 4:33 AM Subject: Pietenpol-List: jury strut bracket placement Since the original plans doesn't have anything on jury struts. What is the distance between the jury strut bracket and the wing strut bracket? Ted Stone ------------------------------------------------------------------------- ----- See AOL's top rated recipes and easy ways to stay in shape for winter. ________________________________ Message 3 _____________________________________ Time: 06:56:19 AM PST US Subject: Pietenpol-List: Re: jury strut bracket placement From: "Don Emch" Ted, I did the same as Greg. I also haven't noticed anything, vibration or otherwise, out of the ordinary. I did this because it is what Frank Pavliga did and he has about 1400 hours. One of the really nice things about the Piet is that there are so many high time ships out there that are so well proven. Don Emch NX899DE Read this topic online here: http://forums.matronics.com/viewtopic.php?p=152321#152321 ________________________________ Message 4 _____________________________________ Time: 11:11:43 AM PST US Subject: Pietenpol-List: Aileron bearings From: "Jack T. Textor" Good morning all, For the aileron bearings outer housing, where they attach to the spar, Bernard shows 3/16" holes for an AN3 bolt. I was planning on drilling for an AN4, but doing so will complicate the welding of the lugs. It looks like I would have to weld the lug on much wider than the width of the pulley to clear the bolt head. Any thoughts would be appreciated. Jack www.textors.com ________________________________ Message 5 _____________________________________ Time: 11:41:20 AM PST US From: Oscar Zuniga Subject: Pietenpol-List: cowling construction I'm with Gordon and the others... it makes more sense to add stiffeners whe re needed rather than making the whole piece heavier with multiple layers o f glass to add stiffness. It was easy to do with the belly of my Flying Sq uirrel, for example... look at the 4th through 6th photos on this page - ht tp://www.flysquirrel.net/update.html All you have to do is lay some foam wedges inbetween the layers, or even ad d them after you've made the cowling and pull it from the mold to see where you need additional stiffness. It's amazing how much rigidity that 3rd di mension can add to a flat layup. One other thing that people have told me is to use peel-ply on your layup ( assuming you're laying up over a male plug). It absorbs excess resin as we ll as providing a much nicer surface to do final finishing on once you peel it off. Work in a warm area, too... working when it's cool means you'll b e using more resin to get it to wet out the plies. Use your squeegee. Epo xy resin is heavy! Oscar ZunigaSan Antonio, TXmailto: taildrags@hotmail.comwebsite at http://w ww.flysquirrel.net ________________________________ Message 6 _____________________________________ Time: 11:52:45 AM PST US From: shad bell Subject: Pietenpol-List: Fly in at DLZ next summer Hi Guys, Dad went to a eaa meeting today for the fly in at DLZ on August 16-17 2008. Dad is wanting to try and get some piets there. It would be great to get 4-5 there if possible. I am signed up to take young eagle rides, and get some kids a ride in a "real airplane". The Yankee Lady b-17 is supposed to be there, some of Dick Packer's Stearmans ( 3 of them I think) and the usual RV crowd. I will extend an invite to anyone who would like to camp out behind my hanger at Chapman Field, it's about a 20 min flight from DLZ. By the way I went for a weather reporting flight in the Piet today (30 degrees) right before the snow came in, withdraw is a hell of a thing. 10 min after landing it was a white out. Only bad thing is the field was not a frozzen as I thought, now it looks like a swamp buggy with all the mud. Oh well a small price to pay. So if any of you Ohio guys would like to fly to Delaware OH (30 miles north of Columbus) this summer let me know. 110 hrs on NX92 GB and counting Shad --------------------------------- Looking for last minute shopping deals? Find them fast with Yahoo! Search. ________________________________ Message 7 _____________________________________ Time: 05:25:18 PM PST US From: "Gordon Bowen" Subject: Re: Pietenpol-List: cowling construction Oscar, Nice pics, looks nice and lightweight. To quote a great designer/aviator "if you throw it up in the air and it comes back down, don't put it on your airplane". Stippling and squeeging out as much resin as possible thru the peel ply works wonders for keeping the laminate lightweight, using paper towels or rags to sop-up/wipe off the excess resin you can work out thru the peel ply.. At Boeing composites and Bigboys, they put down a peel ply, then a perforated teflon film, then a "baby blanket" (the polyester stuff quilts are filled with), then vacuum bag, put it autoclave under 4-5 atmospheres pressure. This squeezes out the absolute most excess resin out of the laminate. Physical testing indicates about 38% resin content maximizes the laminates properties without being too poor in resin content. Without autoclave pressure, it's impossible for a homebuilder to get the laminate too resin poor, it's always gonna be a little resin rich. Once you get over 40% resin content you contribute nothing to the laminates physical properties, the props actually start to decline and you're only adding more weight to the plane. Gordon ----- Original Message ----- From: Oscar Zuniga To: Pietenpol List Sent: Saturday, December 15, 2007 7:13 AM Subject: Pietenpol-List: cowling construction I'm with Gordon and the others... it makes more sense to add stiffeners where needed rather than making the whole piece heavier with multiple layers of glass to add stiffness. It was easy to do with the belly of my Flying Squirrel, for example... look at the 4th through 6th photos on this page - http://www.flysquirrel.net/update.html All you have to do is lay some foam wedges inbetween the layers, or even add them after you've made the cowling and pull it from the mold to see where you need additional stiffness. It's amazing how much rigidity that 3rd dimension can add to a flat layup. One other thing that people have told me is to use peel-ply on your layup (assuming you're laying up over a male plug). It absorbs excess resin as well as providing a much nicer surface to do final finishing on once you peel it off. Work in a warm area, too... working when it's cool means you'll be using more resin to get it to wet out the plies. Use your squeegee. Epoxy resin is heavy! Oscar Zuniga San Antonio, TX mailto: taildrags@hotmail.com website at http://www.flysquirrel.net ------------------------------------------------------------------------------------- Other Matronics Email List Services ------------------------------------------------------------------------------------- Post A New Message pietenpol-list@matronics.com UN/SUBSCRIBE http://www.matronics.com/subscription List FAQ http://www.matronics.com/FAQ/Pietenpol-List.htm Web Forum Interface To Lists http://forums.matronics.com Matronics List Wiki http://wiki.matronics.com Full Archive Search Engine http://www.matronics.com/search 7-Day List Browse http://www.matronics.com/browse/pietenpol-list Browse Digests http://www.matronics.com/digest/pietenpol-list Browse Other Lists http://www.matronics.com/browse Live Online Chat! http://www.matronics.com/chat Archive Downloading http://www.matronics.com/archives Photo Share http://www.matronics.com/photoshare Other Email Lists http://www.matronics.com/emaillists Contributions http://www.matronics.com/contribution ------------------------------------------------------------------------------------- These Email List Services are sponsored solely by Matronics and through the generous Contributions of its members.