>Just a heads up - it looks like your new "header flange to pipe" (picture 5) was welded on the >outside.  I think that 'acceptable practices' state that there should only be a tack weld on the >outside and the actual structural weld should be on the inside.  What does everyone else say?   In >any event be sure to keep an eye on the welds.

>
>Ken Powell

Ken,

Yes, I’ve heard that from PL’s list – but haven’t seen pictures of any other flying Rotary that is welded that way. I was going to tell Aircraft Exhaust to only weld it on the inside but forgot. But I’m not sure there is agreement about this among the rotary flyers.

Joe Hull