---------------------------------------------------------- Pietenpol-List Digest Archive --- Total Messages Posted Thu 04/16/20: 4 ---------------------------------------------------------- Today's Message Index: ---------------------- 1. 02:20 PM - Heating after the bend (PoconoJohn2) 2. 05:21 PM - Re: Heating after the bend (danoliver) 3. 05:53 PM - Re: Heating after the bend (PoconoJohn2) 4. 08:06 PM - Re: Heating after the bend (taildrags) ________________________________ Message 1 _____________________________________ Time: 02:20:14 PM PST US Subject: Pietenpol-List: Heating after the bend From: "PoconoJohn2" I made a 90 degree bend in several pieces of 4130 .090. Am I supposed to heat them up to relieve stress? I feel like I heard that somewhere but no answer in Tony B's books or AC43.13-1B (or I missed it). Thanks! John C Read this topic online here: http://forums.matronics.com/viewtopic.php?p=495846#495846 ________________________________ Message 2 _____________________________________ Time: 05:21:12 PM PST US Subject: Pietenpol-List: Re: Heating after the bend From: "danoliver" I sure hope not. I made all my bends cold per BHP. -------- Dan O Read this topic online here: http://forums.matronics.com/viewtopic.php?p=495849#495849 ________________________________ Message 3 _____________________________________ Time: 05:53:56 PM PST US Subject: Pietenpol-List: Re: Heating after the bend From: "PoconoJohn2" Same here. I never pre-heated anything (except tubing to squish the ends), but for these 90 degree bends, just curious. I'm not worried about the small bends on wire fittings and such. Read this topic online here: http://forums.matronics.com/viewtopic.php?p=495850#495850 ________________________________ Message 4 _____________________________________ Time: 08:06:28 PM PST US Subject: Pietenpol-List: Re: Heating after the bend From: "taildrags" Dan: the question was about bending 4130. If I remember correctly, the fittings in the BHP plans and narrative are all mild steel. Google searching on stress-relieving 4130 seems to indicate that that treatment is used after welding, not bending, and that thin-wall (under about 0.120") doesn't need stress relieving. However, I am not a welder or steel fabricator, so I'm just repeating what I've found online. -------- Oscar Zuniga Medford, OR Air Camper NX41CC "Scout" A75 power, 72x36 Culver prop Read this topic online here: http://forums.matronics.com/viewtopic.php?p=495854#495854 ------------------------------------------------------------------------------------- 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.