Ed:: Not wanting to engage into a never ending bru-ha-ha, but 16 years ago I was involved in an Ercoupe crash that the NTSB blamed on a non-TSO'd form of permatex involved in the sealing of the quick drain threads into a gascolator by a manufacturer, which resulted in a $1,000 dollar fine and a 30 day suspension for an A&P, AI. I think that could be a lesson to us all. The rules may not be modern and may be suspect and full of holes, but they are the rules.
Respectfully Wayne Woollard ----- Original Message ----- From: Ed Burkhead To: 'ety' Sent: Monday, May 19, 2008 10:08 AM Subject: RE: [ercoupe-tech] engine rebuilding Al, I can agree that modern chemicals can be way advanced over old products. My concern is in the difference in design and application. Yeah, the racing Yamaha engines may be $50,000 each and our lowly Continentals are only around $12,000 each so I'd expect the Yamaha people would choose the absolute best for their application. But their application is days or weeks (probably not months very often) sealing-while-inactive and then minutes or a very few hours of horrendous stress. Ours is weeks or months (sometimes years) of sealing-while-inactive followed by hours of moderate stress. The Yamaha recommended gunk may be the best on Earth for our application. Or, it may be something that turns to powder with a few years of age. I don't know and I have no means of knowing and that's my point. Ed
