Brodhead Pietenpol Association

Original Posted By: "DJ Vegh"
I have built two jigs and two test ribs trying to come out with an airfoilwhich is perfect. I have measured, re-measured, lofted and compared to fullsize till I'm blue in the face. Maybe I'm anal, but I really want it to beright-on. I still think it's off a little. Would there be a volunteer outthere that is sure their rib is perfect who could help. I traced my lastrib onto some paper and would like to send it to someone who would have arib to compare the tracing with. Any takers? Thanks in advance!Jack Textor________________________________________________________________________________

Original Posted By: Jim Vydra
Excellent!!! I love it! is there a links section? I didn't see one.....DJ----- Original Message -----

Original Posted By: Jim Vydra
Jack, I might get blasted but... relax. Remember that the rib design was hand drawn to begin with. Don't make it harder than it needs to be. Make sure the distance between spar CENTERS is correct and try to follow the dimensions or pattern in the plans. if the wood is 1/32 or even 1/16 over the line here or there, it's probably not a big deal. Just make sure they are all consistent. When I built the jig, I didn't try to make un-natural dips and bumps in the airfoil just so it would be on the line. Think about the air moving over this form and keep things smooth. The exception being the undercamber on the bottom. Just think, one of your jigs might have performed better than the original drawing. I'd be surprised if anybodies ribs would exactly fit another's jig. Get the relaxation method down pat before attempting that those tail corners :)Joe>From: "Jack Textor" >Reply-To: pietenpol-list(at)matronics.com>To: "Pietenpol List (E-mail)" >Subject: Pietenpol-List: Rib profile question>Date: Fri, 14 Nov 2003 10:13:51 -0600>>>>I have built two jigs and two test ribs trying to come out with an airfoil>which is perfect. I have measured, re-measured, lofted and compared to >full>size till I'm blue in the face. Maybe I'm anal, but I really want it to be>right-on. I still think it's off a little. Would there be a volunteer out>there that is sure their rib is perfect who could help. I traced my last>rib onto some paper and would like to send it to someone who would have a>rib to compare the tracing with. Any takers? Thanks in advance!>Jack Textor>>Crave some Miles Davis or Grateful Dead? Your old favorites are always playing on MSN Radio Plus. Trial month free! ________________________________________________________________________________Date: Fri, 14 Nov 2003 09:51:38 -0800 (PST)

Original Posted By: Matt Dralle

Original Posted By: BARNSTMR(at)aol.com
Hi Jack ( don't say that at the airport LOL) If you did a good job of lofting the rib jig from the plans, the curves are fair ( I drove nails into each of the lofting points and bent a wooded batten around them and found one or two of the top dimensions to be off slightly) and The spar socket dimensions are correct then you've reached your perfection point. If there are two Piet ribs out there that came out of two different builders jigs that are "exactly" the same I would be surprized (I'll probably catch he-- for that statement). If you would like to send me your print to compare to my ribs I would be glad to do that as I haven't started assembling my wings yet. Ed G.>From: "Jack Textor" >Reply-To: pietenpol-list(at)matronics.com>To: "Pietenpol List (E-mail)" >Subject: Pietenpol-List: Rib profile question>Date: Fri, 14 Nov 2003 10:13:51 -0600>>>>I have built two jigs and two test ribs trying to come out with an airfoil>which is perfect. I have measured, re-measured, lofted and compared to >full>size till I'm blue in the face. Maybe I'm anal, but I really want it to be>right-on. I still think it's off a little. Would there be a volunteer out>there that is sure their rib is perfect who could help. I traced my last>rib onto some paper and would like to send it to someone who would have a>rib to compare the tracing with. Any takers? Thanks in advance!>Jack Textor>>Compare high-speed Internet plans, starting at $26.95. https://broadband.msn.com (Prices may vary by service area.)________________________________________________________________________________Date: Fri, 14 Nov 2003 14:53:15 -0500

Original Posted By: "John Ford"

Original Posted By: javier cruz
Subject: Re: Pietenpol-List: Rib profile questionJavier, I'd like a copy of that email for the ribs. Can I be put on your list.Thanks Greg________________________________________________________________________________Date: Sat, 15 Nov 2003 20:45:10 -0800 (PST)

Original Posted By: Gnwac(at)cs.com
Subject: Re: Pietenpol-List: Rib profile questionThanks Javier for the drawingsGreg________________________________________________________________________________