Subject: [FlyRotary] Re: exhaust flange?

 

In a message dated 12/31/2003 11:37:44 AM Central Standard Time,

ALVentures@cox.net writes:

 

<< I was surprised (and disappointed) when I got my tangential manifold

 muffler done by a FAA certified welder to find that it is welded on the

 outside.  It is .058 inconel into the RB flange.  Same guy did Dave

 Atkins, so his is probably the same way and apparently still is fine.

 It's definitely a source of concern to me. 

  

 Al

  >>

 

I don't think it is much of a factor for any material other than carbon

steel.

 

Lynn E. Hanover

 

Yeah, I’d agree; if you just have headers coming out into a collector.  I have these short pipes welded into the tangential muffler, which expands axially a fair amount more than the engine when running a nice glowing red. I’m guessing there are some pretty high stresses on the welds on #1 and #3 pipes.

 

Al