Yep, in normal engineering doctrine, that weld would be considered stronger than the original material. BUT This is not normal engineering. It is bureaucratic. So, we gotta just try to figure out the rules and how to follow them. Still, sometimes it is hard to second guess as to when, where, and how physical laws will be over-ridden by FAA policy. The scary thing is that I finally seem to be developing an instinct for it. Does this mean I have experienced permanent damage? ;-) ddw -----Original Message----- From: [email protected] [mailto:[EMAIL PROTECTED] On Behalf Of AJ DeMarzo Sent: Saturday, February 16, 2008 10:35 PM Cc: Ercoupers Tech Subject: Re: [ercoupe-tech] Re: spar fixes Jim;
No further need to apologize for being stoopid, I don't think your feelings are stoopid, they have some validity. Now if you would like to apologize for constantly apologizing, that would be okay. I've never heard that a spar can be fixed via welding. A 60 year old chunk of metal that has been and will be under great stress probably couldn't be done well enough by your local fence mender anyway. Best thing is to ask your IA or call the FSDO and ask a field inspector. If you get a good one, he'll explain your Uncle Sam's reasoning. Al DeMarzo Visit the Ercoupe Swap Page Free, Easy and No Membership Required http://www.ercoupeo <http://www.ercoupeowners.com/swap/swapbook.htm> wners.com/swap/swapbook.htm ----- Original Message ----- From: "James B. Brennan" <[EMAIL PROTECTED] <mailto:jim%40jbrennan.com> com> To: "AJ DeMarzo" <[EMAIL PROTECTED] <mailto:noshitoal%4060fish.com> com> Cc: "Ercoupers Tech" <ercoupe-tech@ <mailto:ercoupe-tech%40yahoogroups.com> yahoogroups.com> Sent: Saturday, February 16, 2008 10:23 PM Subject: Re: [ercoupe-tech] Re: spar fixes > Sorry to be so stoopid, but I had the idea that an high quality weld, > especially with a V - cut into the problem (crack) would be significantly > stronger than the as - manufactured piece. Is this "garbage > knowledge"? - - - or is it something contrary to FAA Standards? > > I feel simple-minded now, thinking that an excellent aluminum weld could > not repair a cracked casting. Please correct my simple soul. (Obviously > it has occurred to me that this has come up in the past sixty years, but I > have not seen any discussion of it. Perhaps it is that cut-and-dried and > so that there is nothing to discuss at this point.) > > JBB > > >
