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Jeff,
I stand corrected. I just had a quick look on the
internet. Yep, 4 place surely needs the 13B.
Confusion aside I'm glad your thicker rad works
well for you George (down under)
Hi George, maybe you have
a Chubby Cubby confused with an ultralight Cubby ... my airplane is a Wag-Aero
copy of the PA-14 family cruiser, a 4-place super cub if you like. At 1300 lbs
empty and with 2200 lb gross the 13B is not overkill ... se attached
photo.
Jeff
From: Rotary motors in aircraft
[flyrotary@lancaironline.net] On Behalf Of George Lendich
[lendich@aanet.com.au]
Sent: Saturday, January 30, 2010 8:50
PM
To: Rotary motors in aircraft
Subject: [FlyRotary] Re:
Tiff to CAD Software
Jeff,
The 13B is probably way overkill for this
aircraft, you must be running low RPM and the heat dissipation would be low
also. Ever thought of a single rotor engine.
George ( down under)
----- Original Message -----
Sent: Sunday, January 31, 2010 3:14
AM
Subject: [FlyRotary] Re: Tiff to CAD
Software
Mike,
I’ve got a 13B NA, flying a “Chubby Cubby” – 110 mph airplane.
Jeff
From: Rotary motors
in aircraft [mailto:flyrotary@lancaironline.net] On Behalf Of Mike
Wills
Sent: Friday, January 29, 2010 10:20 PM
To: Rotary
motors in aircraft
Subject: [FlyRotary] Re: Tiff to CAD
Software
Figures
I'd make a statement like that and have somebody prove me wrong. I cant
remember Jeff, what airframe and what engine are you
running?
Sent: Friday, January
29, 2010 2:51 PM
Subject: [FlyRotary] Re:
Tiff to CAD Software
FWIW,
I my radiator core is 5.5” thick x 5.5” high x 20” wide … it cools …
JWW
From: Rotary motors
in aircraft [mailto:flyrotary@lancaironline.net] On Behalf Of George
Lendich
Sent: Friday, January 29, 2010 4:49 PM
To:
Rotary motors in aircraft
Subject: [FlyRotary] Re: Tiff to CAD
Software
I like your
approach to the problem, I see nothing but positive outcomes in proving the
concept (one way or another). 3.5" is ( I believe) OK, the thick verses thin
debate is like comparing apples and oranges given the different applications
of cars and aircraft. I don't know what speed your looking at in cruise but
3.5" should be good for a higher cruise. I believe some have used 3" cores
successfully. However I'm no expert but I look forward to the
outcomes.
Mike,
The
graphic is not a true representation of the final design. It merely
depicts an unmodified P-51 scoop that has been rendered in CAD, scaled 61%
and rotated lightly in the clockwise direction.
My
actual radiator design has a frontal area of 203 sq in and a depth of 3.5
in.
As
stated earlier, the purpose of the post was to announce my willingness to
share a software program that I had developed and found useful.
T
Mann
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