Brodhead Pietenpol Association

Original Posted By: "Barry Davis"
Here's an idea.......... if there is someone out there who is going to scrap theirbrazed parts, how about testing them to destruction?Clamp those suckers in a vise and wail away! Bend them, twist them, hit 'em witha BIG hammer. Then, report back to the group whether or not you think they wouldhave held up under the rigors of an Air Camper wafting along at 60 kts. Oreven a Tailwind at 150 kts.As I look at drawings 4 & 6, it seems that the brazed parts are either capturedinside a torque tube, holding a bolt in place, or are in a compression or otherlow-stress application. I have not made a detailed study of each part so maybesomeone else will reply on this.I've brazed bicycle frames (some are 20 yrs old still providing service), car partsand admit to having brazed parts on my Piet. The bike parts and Piet partsare indeed 4130. Just a thought. Seems like empirical data for something like this on-going argumentmight put it to bed for a while.Larry________________________________________________________________________________

Original Posted By: "Craigo"
>>Here's an idea.......... if there is someone out there who is going to scrap theirbrazed parts, how about testing them to destruction?>>Clamp those suckers in a vise and wail away! Bend them, twist them, hit 'em witha BIG hammer. Then, report back to the group whether or not you think theywould have held up under the rigors of an Air Camper wafting along at 60 kts.Or even a Tailwind at 150 kts.>>As I look at drawings 4 & 6, it seems that the brazed parts are either capturedinside a torque tube, holding a bolt in place, or are in a compression or otherlow-stress application. I have not made a detailed study of each part so maybesomeone else will reply on this.>>I've brazed bicycle frames (some are 20 yrs old still providing service), carparts and admit to having brazed parts on my Piet. The bike parts and Piet partsare indeed 4130. >>>Just a thought. Seems like empirical data for something like this on-going argumentmight put it to bed for a while.>>Larry>>________________________________________________________________________________