---------------------------------------------------------- RV9-List Digest Archive --- Total Messages Posted Tue 02/06/07: 5 ---------------------------------------------------------- Today's Message Index: ---------------------- 1. 12:53 AM - Longeron Bending (Bruce Peters) 2. 04:19 AM - Re: Longeron Bending (Chenoweth) 3. 06:07 AM - Re: Longeron Bending (Michael Schipper) 4. 08:49 PM - Re: Longeron Bending (Bruce Peters) 5. 08:52 PM - Re: Longeron Bending (Bruce Peters) ________________________________ Message 1 _____________________________________ Time: 12:53:09 AM PST US From: "Bruce Peters" Subject: RV9-List: Longeron Bending Hi all, I'm about to try and bend the F718 longerons for my RV9A and I am terrified at the prospect. Other than the fuel tanks this is what has kept me awake at night thinking about it. I did an archive search and saw a couple ideas but was wondering if there was anymore wisdom out there I can lean on. Pictures would be really appreciated as well. Thanks in advance. Bruce Peters RV9A Fuselage Bakersfield, CA ________________________________ Message 2 _____________________________________ Time: 04:19:20 AM PST US From: "Chenoweth" Subject: Re: RV9-List: Longeron Bending Bruce, I found the technique described in the Orndorff video to be a good one and used it. I particularly liked the idea of clamping the two together to get the bends equal. I have no metalwork background and had my share of problems but none turned out to be insurmountable. I will caution you that I found that the "template" Van's provided for the bend curve was not accurate in length. Since I didn't expect that I had made no effort to confirm that the length of the bend as provided by the dimensions was the same as the length of the template. Mine was off by 3/4". You might be able to imagine the distress around here till I figured out that the problem was the template and not something I'd done wrong. My 7A neighbor suggested using the 721B as a bend guide and that worked fine. That by, the way, is the technique described in the video and also in the instructions for the RV7s. Your next excitement will most likely be bending the side skin. I wouldn't use the Orndorff technique for this. I did some experimenting with it and found that, for me, there was no obvious way to go back and adjust the curve once you start. I used the Van's technique with great success. Bill - RV9 Albion, Maine ----- Original Message ----- From: Bruce Peters To: rv9-list@matronics.com Sent: Tuesday, February 06, 2007 3:51 AM Subject: RV9-List: Longeron Bending Hi all, I'm about to try and bend the F718 longerons for my RV9A and I am terrified at the prospect. Other than the fuel tanks this is what has kept me awake at night thinking about it. I did an archive search and saw a couple ideas but was wondering if there was anymore wisdom out there I can lean on. Pictures would be really appreciated as well. Thanks in advance. Bruce Peters RV9A Fuselage Bakersfield, CA ------------------------------------------------------------------------- ----- 2/1/2007 2:28 PM ________________________________ Message 3 _____________________________________ Time: 06:07:17 AM PST US From: Michael Schipper Subject: Re: RV9-List: Longeron Bending Hi Bruce, Yes, bending the longerons is a time-consuming and somewhat tedious project, but once you're done, you're done. Just use the template and the canopy deck as guides and go slowly. It's not that difficult. http://www.my9a.com/fuse5.asp#092204 Regards, Mike Schipper RV-9A - N63MS - 120 hours - www.my9a.com RV-10 - #40576 - Wings On Feb 6, 2007, at 2:51 AM, Bruce Peters wrote: > Hi all, > > I=92m about to try and bend the F718 longerons for my RV9A and I am > terrified at the prospect. Other than the fuel tanks this is what > has kept me awake at night thinking about it. I did an archive > search and saw a couple ideas but was wondering if there was > anymore wisdom out there I can lean on. Pictures would be really > appreciated as well. Thanks in advance. > > > Bruce Peters > > RV9A Fuselage > > Bakersfield, CA ________________________________ Message 4 _____________________________________ Time: 08:49:05 PM PST US From: "Bruce Peters" Subject: RE: RV9-List: Longeron Bending Bill, Thanks for the reply. I appreciate the tip on the video and will order that. I had noticed the measurements on the drawing were not accurate and just assumed that they were "not to scale" but that the general curve was accurate. However, I'm glad to know that I wasn't just seeing things. There have been a couple other areas in the drawings so far that just seemed a little off but mostly I have been able to figure it out. On bending the side skin I hadn't read far enough ahead to realize it was going to be a challenge. I was hoping maybe it was going to assume the shape of the longerons without much fuss. Well, more to lay awake at night about!!! Again, thanks for the help. Bruce -----Original Message----- From: owner-rv9-list-server@matronics.com [mailto:owner-rv9-list-server@matronics.com] On Behalf Of Chenoweth Sent: Tuesday, February 06, 2007 4:13 AM Subject: Re: RV9-List: Longeron Bending Bruce, I found the technique described in the Orndorff video to be a good one and used it. I particularly liked the idea of clamping the two together to get the bends equal. I have no metalwork background and had my share of problems but none turned out to be insurmountable. I will caution you that I found that the "template" Van's provided for the bend curve was not accurate in length. Since I didn't expect that I had made no effort to confirm that the length of the bend as provided by the dimensions was the same as the length of the template. Mine was off by 3/4". You might be able to imagine the distress around here till I figured out that the problem was the template and not something I'd done wrong. My 7A neighbor suggested using the 721B as a bend guide and that worked fine. That by, the way, is the technique described in the video and also in the instructions for the RV7s. Your next excitement will most likely be bending the side skin. I wouldn't use the Orndorff technique for this. I did some experimenting with it and found that, for me, there was no obvious way to go back and adjust the curve once you start. I used the Van's technique with great success. Bill - RV9 Albion, Maine ----- Original Message ----- From: Bruce Peters Sent: Tuesday, February 06, 2007 3:51 AM Subject: RV9-List: Longeron Bending Hi all, I'm about to try and bend the F718 longerons for my RV9A and I am terrified at the prospect. Other than the fuel tanks this is what has kept me awake at night thinking about it. I did an archive search and saw a couple ideas but was wondering if there was anymore wisdom out there I can lean on. Pictures would be really appreciated as well. Thanks in advance. Bruce Peters RV9A Fuselage Bakersfield, CA href="http://www.matronics.com/Navigator?RV9-List">http://www.matronics .com/ Navigator?RV9-List href="http://forums.matronics.com">http://forums.matronics.com _____ ________________________________ Message 5 _____________________________________ Time: 08:52:09 PM PST US From: "Bruce Peters" Subject: RE: RV9-List: Longeron Bending Hi Mike, Thanks for the advice and link to your site. That helps a lot. I realized after looking at your pictures I forgot to put the radius in the end of the longeron when I trimmed out the piece. Do you think that's much an issue? Or should I shorten up the longeron just a bit to accommodate a radius? Again, thanks for the help. Bruce -----Original Message----- From: owner-rv9-list-server@matronics.com [mailto:owner-rv9-list-server@matronics.com] On Behalf Of Michael Schipper Sent: Tuesday, February 06, 2007 6:07 AM Subject: Re: RV9-List: Longeron Bending Hi Bruce, Yes, bending the longerons is a time-consuming and somewhat tedious project, but once you're done, you're done. Just use the template and the canopy deck as guides and go slowly. It's not that difficult. http://www.my9a.com/fuse5.asp#092204 Regards, Mike Schipper RV-9A - N63MS - 120 hours - www.my9a.com RV-10 - #40576 - Wings On Feb 6, 2007, at 2:51 AM, Bruce Peters wrote: Hi all, I'm about to try and bend the F718 longerons for my RV9A and I am terrified at the prospect. Other than the fuel tanks this is what has kept me awake at night thinking about it. I did an archive search and saw a couple ideas but was wondering if there was anymore wisdom out there I can lean on. Pictures would be really appreciated as well. Thanks in advance. Bruce Peters RV9A Fuselage Bakersfield, CA ------------------------------------------------------------------------------------- Other Matronics Email List Services ------------------------------------------------------------------------------------- Post A New Message rv9-list@matronics.com UN/SUBSCRIBE http://www.matronics.com/subscription List FAQ http://www.matronics.com/FAQ/RV9-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/rv9-list Browse Digests http://www.matronics.com/digest/rv9-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.