|
|
Bob,
I can't tell from the picture, but are the short tubes welded on the
backside or the outside, or both. If they are welded on the outside,
that's where I would guess the cracks would show up first. Mark S. -----Original Message-----
From: Rotary motors in aircraft [mailto:flyrotary@lancaironline.net] On
Behalf Of Bob White
Sent: Wednesday, July 26, 2006 10:33 AM
To: Rotary motors in aircraft
Subject: [FlyRotary] Re: Joe Hull's OSH Trip - Part 2
Hi Mark,
Your system has a little more room to flex than mine. I think the most
likely place I will see a crack is where the short tube are welded to
the large can.
Bob W.
On Wed, 26 Jul 2006 09:49:10 -0500
"Mark R Steitle" <mark.steitle@austin.utexas.edu> wrote:
Finn,
Maybe that's why some of the aftermarket flanges are one piece.
That's
how I made mine for that very reason. So far, so good.
Mark S.
________________________________
From: Rotary motors in aircraft [mailto:flyrotary@lancaironline.net]
On
Behalf Of Finn Lassen
Sent: Wednesday, July 26, 2006 9:37 AM
To: Rotary motors in aircraft
Subject: [FlyRotary] Re: Joe Hull's OSH Trip - Part 2
Ground running won't necessarily get you into that thermo cycle range.
Seems you consistently have to get above 5,000 RPM before anything
happens.
No expansion joints: it will crack.
Unless you use ridiculously thick material. Which is probably why the
stock Mazda manifold is so heavy.
Finn
--
http://www.bob-white.com
N93BD - Rotary Powered BD-4 (first engine start 1/7/06)
Custom Cables for your rotary installation -
http://www.roblinphoto.com/shop/
|
|