Ian Beadle had a
problem with a cracked exhaust last week, but managed to limp home OK.
He now has a new exhaust with a small design change.

Ian, go up on the wall thickness. Ed uses .140 inch (3.5 mm) thick SS and
they don't even discolor let alone crack. :-)

Paul Lamar

 Paul

3.5mm ! I want to fly the machine, not drive it.  The new one is 2mm 316 SS
consists of two 32inch X 2 inch pipes into a collector(21/2") and weighs
5kg(11 lbs) without the muffler, which is now outside. By the way it was
great to meet you and Robin when you came to Perth.
Ian. Underweight fast RV6A

Good on you Ian. We will get another exhaust system thickness data point.
Good excuse to upload more pictures of Ian airplane.
I took some noise measurements on Ian muffler system but I lost
the piece of paper so I am not sure about this. I think it
was 109 db 30 feet away and 5000 rpm. Do you remember what
RPM you were running Ian when we took those measurements?

BTW where did it crack?

Paul Lamar
 
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