Charlie,

Your post below reminded me that I wanted to thank everyone who suggested I get a TIG system rather than some other form of welding set-up.  After getting up to speed on the benefits of the different types of welding, it is clear that TIG was the only solution for my needs (most versatile and most appropriate for the lighter gauge metals used in aircraft).  After spending a couple weeks learning to not destroy everything I touch with it, I can finally create ugly looking things that would loosely fall into the category of a weld.  But is is fun, and great to have the ability to fix a lot of things that were previously thrown out or limped along with JB weld.

I have been able to repair cracks in my exhaust system and beef up my 4130 engine mount, not to mention a ton of projects at home.  

Wish I did it sooner.

David Leonard

On Tue, Apr 12, 2016 at 3:28 PM, Charlie England <flyrotary@lancaironline.net> wrote:

Several years ago, some rotary users tried various flattened exhaust tips, as seen on a lot of European homebuilts. (Supposed to help with making exhaust tone less irritating.) IIRC, everyone found that the rotary would destroy the tips very quickly. Well, while walking through the Fantasy of Flight museum about a week ago, I noticed these tips on (IIRC) a P-40. Looks like they maintained a curved shape but were still able to have the pinched outlet. Don't know if it would actually work with a rotary, but it should have a better chance than the purely flat tips.

Charlie

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