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Message
Tommy,
Here are a couple of pictures showing how I did the
ducts. There is a layup attached to the lower cowl that was formed on the duct,
with a 1/8" spacing, to allow a rubber strip to be put in for sealing/abrasion
resistance.
Duct sits down in the lip, and is a relatively
smooth transition from the cowl lip to the duct lip.
Bill Schertz
KIS Cruiser # 4045
----- Original Message -----
Sent: Saturday, September 04, 2004 9:56
PM
Subject: [FlyRotary] Re: Doin' the
duct
Thanks,
Ed!
TJ
From: Rotary
motors in aircraft [mailto:flyrotary@lancaironline.net] On Behalf Of Ed Anderson
Sent: Saturday, September 04, 2004 8:12
PM
To: Rotary motors in
aircraft
Subject: [FlyRotary]
Re: Doin' the duct
My ducts are on the inside of the
cowl inlet and yes there is a lip formed by the foam weather stripping which I
would rather not have. On my Latest ducts (yet to fly) I have eliminated
the foam, so we will see if that works. But, with the foam strip I have
flown over 225 hours with plenty of cooling. So while I do agree they
undoubtedly distrube the airflow, apparently not enough to interfere in any
serious way with my cooling.
Ed Anderson
RV-6A N494BW Rotary
Powered
Matthews, NC
----- Original Message -----
Sent:
Saturday, September 04, 2004 8:33 PM
Subject:
[FlyRotary] Re: Doin' the duct
Sorry Ed, the last
time I looked at your ducts there was a big donut in the
opening..:0). Is there a turbulence causing lip with the duct,
foam separator and the cowl? Does the duct fit around the outside of
cowl inlet?
TJ
From:
Rotary motors in aircraft [mailto:flyrotary@lancaironline.net] On Behalf Of Ed Anderson
Sent: Saturday, September 04, 2004 7:10
PM
To: Rotary motors in
aircraft
Subject:
[FlyRotary] Re: Doin' the duct
Tommy, I basically bring my
ducts out to the inlet opening and use a bit of 1/8" thick foam
weather-strip insulation to prevent contact between duct and inlet part of
cowling. There is very little vibration to content with unlike a
Lycoming which would play havoc with such a set up.
Ed Anderson
RV-6A N494BW Rotary
Powered
Matthews, NC
----- Original Message -----
Sent:
Saturday, September 04, 2004 6:10 PM
Subject:
[FlyRotary] Doin' the duct
Hi Guys.
I need
understanding on how to mate the radiator ducts with the cowl
opening. I can see how to mount the rads to motor mount and redrive
back plate. Follow on in the footsteps of master glass scuptors like
Tracy. Ed and RD with foam, electrical tape and poprivets.
But I can’t ‘see’
the junction of duct and cowl.. Thanks for any ideas. The duct
tape is a little cheezie..:-)
Regards,
Tommy
James<>< (designing second edition cooling
system)
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