Over 500 hours on them and it looks like
they are going to outlast me. They do oxidize under the rotary heat, but
apparently very slowly and after 500 hours and 10 years they show no signs of deterioration.
I agree I think the almost 1/8”
thick wall has a lot to do with their longevity. It does add a bit to their
weight, but my concern about that very hot exhaust getting loose under the cowl
will probably ensure they remain there.
Ed
From: Rotary motors in
aircraft [mailto:flyrotary@lancaironline.net] On
Behalf Of Mark Steitle
Sent: Thursday, October 01, 2009
5:18 PM
To: Rotary motors in aircraft
Subject: [FlyRotary] Re:
"Tangential Muffler" was Quiet is Deafening
I agree on using Inconel... that's what I'm using for my new tangential
muffler. Although my first exhaust manifold, which I'm still
running, was made from commercial SS hand rail material and is holding up
fine. It is heavy, but lighter than using the stock cast iron
manifold. Ed Anderson is using these same SS handrails on his a/c and has
lots of hours on them. The secret is in the thickness (.140").
On Thu, Oct 1, 2009 at 1:28 PM, Kelly Troyer <keltro@att.net> wrote:
Probably should be made from "Inconel" to
last..............My memory fails me (regularly) but
if I recall correctly Al G's is inconel...............Jump in here
Al...................
--
Kelly Troyer
"Dyke Delta"_13B ROTARY Engine
"RWS"_RD1C/EC2/EM2
"Mistral"_Backplate/Oil Manifold
-------------- Original
message from Mark Steitle <msteitle@gmail.com>: --------------
You just need to fly at Mach 1 so you stay ahead of the sound.
;-)
Can anyone report on the effectiveness of the tangential muffler in
actual real world situations? (As I recall Al G. is running a tangential
muffler on his Velocity.) I ask because I'm in the process of building
one for my Lancair with the hopes that it will work better than the DNA muffler
that I'm currently running. I think it will work better at reducing the
noise level in the cabin, but at what cost to power? Hopefully, this will
save me the cost of a new Zulu ANR headset. Comments appreciated.
On Wed, Sep 30, 2009 at 10:01 PM, Mike Wills <rv-4mike@cox.net> wrote:
If you think the quiet is deafening go fly behind a
rotary - now thats deafening!
----- Original Message -----
Sent: Wednesday,
September 30, 2009 7:15 AM
Subject: [FlyRotary] Quiet
is Deafening
Anyone out there ??.....................<:)
--
Kelly Troyer
"Dyke Delta"_13B ROTARY Engine
"RWS"_RD1C/EC2/EM2
"Mistral"_Backplate/Oil Manifold
-------------- Original
message from "Patrick Panzera" <panzera@experimental-aviation.com>:
--------------
Hey gang!
I came across a rare find this weekend.
Any serious rotorhead will certainly appreciate this.
Bluelines from 1973 of the General Motors Wankel Rotary
engine.
I just put them up on eBay
http://tinyurl.com/GM-Rotary-drawings
Pat