Re: Pietenpol-List:Rib Stitching on Tailfeathers

matronics · Post by **matronics** » Sat Sep 30, 2000 5:33 pm

Original Posted By: Don Mosher
Gentlemen:Did ya'll rib stitch the fabric to the ribs on the horiz stab, vert stab andcontrol surfaces?I've seen some with and some without. I'm betting it's a good idea, huh?Thanks, Bert________________________________________________________________________________Date: Sat, 30 Sep 2000 18:51:38 -0500

matronics · Post by **matronics** » Sat Sep 30, 2000 5:45 pm

Original Posted By: Conoly
"walter evans" The pro's say to stitch all those surfaces to stop the fabric from"fluttering" on the frames. Can't hurt. It would only take about an hourmore to do the tail surfaces.walt-----------------------------------------------------Click here for Free Video!!http://www.gohip.com/freevideo/----- Original Message -----

matronics · Post by **matronics** » Sat Sep 30, 2000 7:23 pm

Original Posted By: Don Mosher

matronics · Post by **matronics** » Sat Sep 30, 2000 11:18 pm

Original Posted By: "Rodger & Betty Childs"
Subject: Re: Pietenpol-List:Rib Stitching on TailfeathersIn a message dated 9/30/00 5:36:31 PM Central Daylight Time, bconoly(at)surfsouth.com writes:>We originally covered the empenage with 2.7 oz fabric, and glued the fabric to the ribs, edges, and overlaps...no stitches. In reconsidering the possibility of the fabric coming loose, I tore all the covering back off, and scalloped the gussets, and sanded a little bit off of the corners of the framing, and re-covered with 1.8 oz material, and STITCHED (and glued) all the ribs, using a wider spacing than I did on the wing. I also glued triangle balsa wood on the trailing edge of the stabs, and leading edges of the flight surfaces, (between the hinges) leaving a gap of about 1/4". After covering in the conventional manner, I assembled the flight surfaces with the clevis pins and cotter pins. Then I covered the gap with a strip of the 1.8 oz material, about 1 1/2" wide, both top and bottom, between the hinges. GAPLESS HINGES !! This manner also makes the hinges somewhat redundant, and prevents any sticks from kicking up into the hinge area. I weighed everything at each step of the way, and my main goal was met by reducing the weight of the empenage (using lighter fabric) by about 230 grams !! Build Light and Strong.Chuck GantzerWichita KS________________________________________________________________________________

matronics · Post by **matronics** » Sun Oct 01, 2000 10:51 am

Original Posted By: "Michael Brusilow"
"Rodger & Betty Childs" Mount the elevator horns straight ahead without any angle, let the shackletake care of the angle of the control wire coming back.The Piet has enough drag without adding more from an angled control horn.We are going to braze a thin walled bushing in the control horn to give morebearing surface to the pin that holds the shackle on.Rodger ChildsPiet in progress________________________________________________________________________________

matronics · Post by **matronics** » Sun Oct 01, 2000 2:17 pm

Original Posted By: "Conoly"
"Michael Brusilow" >>Mount the elevator horns straight ahead without any angle, let the shackle>take care of the angle of the control wire coming back.Sorry guys, I don't agree. I makes more sense to have a direct pull on thehorn than an angular pull.Mike B Piet N687MB ( Mr Sam )________________________________________________________________________________

matronics · Post by **matronics** » Sun Oct 01, 2000 3:31 pm

Original Posted By: "Michael Brusilow"
I agree, too, Mike. I angled mine inward and that avoids a sidewayscomponent of the load on the horne. Before I finished mine, and before Icompleted the welding, I clamped the horn and tried it in Both positions(straight and angled). In the straight position, there is enough side loadto actually flex the horn. And that is with only the weight of the elevatorbeing overcome. I would imagine that the dynamic loads encountered inflight would REALLY flex a horn.I vote angled.Bert----- Original Message -----

matronics · Post by **matronics** » Sun Oct 01, 2000 7:40 pm

Original Posted By: "Conoly"
"Richard Navratil" Hey Bert,I'm a bit envyous with that talk of covering and all. I hope the projectsgoing wellDick Navratil----- Original Message -----

matronics · Post by **matronics** » Sun Oct 01, 2000 8:59 pm

Original Posted By: Gene Rambo
"walter evans" After assuming that the horns are straight, now that this discussion is inprogress, I looked back at the prints. All of the prints show them angled,none show them straight,,,,,,why would you put them straight?(There is no note that states angled or straight , thats the question)walt-----------------------------------------------------Click here for Free Video!!http://www.gohip.com/freevideo/----- Original Message -----

matronics · Post by **matronics** » Sun Oct 01, 2000 10:31 pm

Original Posted By: "walter evans"
Subject: Re: Pietenpol-List: elevator hornsIn a message dated 10/1/00 2:17:06 PM Central Daylight Time, mb-albany(at)worldnet.att.net writes:>I agree with you, Mike. Build it according to the plans. It's worked for 70 + years. Safety is of the utmost importance, and when major alterations are made, or new spars are repaired, safety is compromised.Chuck G.________________________________________________________________________________

matronics · Post by **matronics** » Mon Oct 02, 2000 8:44 am

Original Posted By: "Greg Cardinal"

matronics · Post by **matronics** » Mon Oct 02, 2000 4:02 pm

Original Posted By: nle97(at)juno.com
Subject: Re: Pietenpol-List:Rib Stitching on Tailfeathers