Mailing List flyrotary@lancaironline.net Message #66126
From: Charlie England ceengland7@gmail.com <flyrotary@lancaironline.net>
Subject: Re: [FlyRotary] Re: Al Gietzen - 20B Exhaust System
Date: Tue, 21 Jul 2020 20:24:55 -0500
To: Rotary motors in aircraft <flyrotary@lancaironline.net>
Good pics; I'll add them to my collection.

Y'all started me down the rabbit hole, too. Here's a link to the Wayback Machine archive of Al's last website update.
https://web.archive.org/web/20110812060905/http://members.cox.net/alg3/airplane.htm
The dyno info looks pretty impressive, in light of stuff like unequal length, totally untuned intake runners and what looks like a very restrictive muffler arrangement.

Charlie

On 7/21/2020 7:18 PM, Thomas Mann tmann@n200lz.com wrote:
Charlie,
I did some more digging and found these pics.
These are from a reproduction made from some of the drawings that exist somewhere.
 
T Mann
 
 

From: "Charlie England ceengland7@gmail.com" <flyrotary@lancaironline.net>
Sent: Tuesday, July 21, 2020 7:00 PM
To: "Rotary motors in aircraft" <flyrotary@lancaironline.net>
Subject: [FlyRotary] Re: Al Gietzen - 20B Exhaust System
 
Some additional lorez images here:
http://wiki.velocityoba.com/index.php?title=Gietzen_N755V


On 7/21/2020 6:41 PM, Charlie England ceengland7@gmail.com wrote:
Hi Dave,

I sent the relevant pics to the list, but I'm happy to send you everything I've got if you want. I have no data at all; just the pics that do show configuration, and hint at internal structure via the weld lines that are visible.

Charlie

On 7/21/2020 5:18 PM, DAVID BARKER david_barker@msn.com wrote:
Dear Charlie,
Would you send me a copy of the exhaust data and photos also.
Dave Barker
 
Sent from my iPad
 
On Jul 21, 2020, at 10:04 AM, Thomas Mann tmann@n200lz.com <flyrotary@lancaironline.net> wrote:
 
?
Thanks Charlie,
Those are some good pics.
 
The main advantage Al's design (besides bringing the DB level down) is the fact that there is no packing material involved. 
That's a real vulnerable area as was proven by Mistral and others. 
 
Thanks again.
 
T Mann
 
 
 

From: "Charlie England ceengland7@gmail.com" <flyrotary@lancaironline.net>
Sent: Tuesday, July 21, 2020 10:33 AM
To: "Rotary motors in aircraft" <flyrotary@lancaironline.net>
Subject: [FlyRotary] Re: Al Gietzen - 20B Exhaust System
 
Looking closer, they're pretty small and only a few are relevant. You can see at least some weld detail on the turning vanes mentioned. Here you go:

Charlie

On 7/21/2020 10:18 AM, Charlie England ceengland7@gmail.com wrote:
I've got a folder on my network drive with Al's name on it; it contains 10 pics of his installation (probably...).

So as to not overload the list, would you like me to send them to you directly?

Charlie
On 7/21/2020 10:04 AM, Marc Wiese cardmarc@charter.net wrote:

This is the only one I could dig up that showed any of Al’s exhaust. Is Al still around? Did he get it flying?

Marc

 

From: Rotary motors in aircraft
Sent: Monday, July 20, 2020 11:45 AM
To: Rotary motors in aircraft <flyrotary@lancaironline.net>
Subject: [FlyRotary] Al Gietzen - 20B Exhaust System

 

Does anyone have any of the drawings from Al Gietzen's exhaust system as it was installed on his Mazda 20B Velocity (N755V.)

Tom Mann
Long-EZ N200LZ (in construction)
Velocity N951TM

 
 
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