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From: "Bill Bradburry" <bbradburry@bellsouth.net>
To: "'Rotary motors in aircraft'" <flyrotary@lancaironline.net>
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Subject: RE: [FlyRotary] Re: T-shirt design
Date: Wed, 12 Aug 2009 11:22:54 -0400
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Jeff,
That is my plan when I get everything back together.  I bought a Dwyer
Magnehelic guage on Ebay.  It is 0-30 inches of water.  Will read positive
or negative depending on where you attach your tubes.  Will withstand a max
of 15 psi.  I bought it because it will be easier to take readings when in
flight (assuming I ever fly the thing) and will prevent the dreaded colored
water spill.  I am going to use it to get readings from various places
inside the cowl and air inlets and outlets.  I have a couple of air temp
sensors that are long enough to reach most places in the cowl to check temps
and if needed there are more places to put thermocouples on the EM-2 that I
am not now using.
I would think zero differential would mean that there is no air flow coming
to the oil cooler, or if the cooler dumps into the cowl, the pressure inside
the cowl is the same as the pressure coming to the cooler.
Instead of having the manometer open in the cockpit, I plan to have the two
tubes on both sides of the exchanger to see the drop thru the exchanger.
And also a check with one tube in the inlet and one in a static area to find
the inlet pressure, and again with one tube in the outlet area and one in
static to find the pressure behind the exchanger.
Maybe one in my ear to check my pressure when it doesn't cool!  :>)
Bill  

-----Original Message-----
From: Rotary motors in aircraft [mailto:flyrotary@lancaironline.net] On
Behalf Of Jeff Whaley
Sent: Wednesday, August 12, 2009 9:13 AM
To: Rotary motors in aircraft
Subject: [FlyRotary] Re: T-shirt design

Hi Bill, not sure why your installation won't cool but I'm going through the
same problem ... my water radiator installation is working quite well, but
the oil cooler installation is not too good. I did a lot of trial and error
then finally decided that instrumentation was needed. I made myself a simple
manometer to measure differential pressure across my cores. As it turns out,
the radiator installation has about 4" of differential pressure on the
ground at WOT; however, my oil cooler indication was ZERO differential
pressure under same conditions.
My suggestion is make some measurements ... a manometer is a tube with
colored water in it with a U-Bend to trap the fluid; run one end of tube to
a location infront of core center and the other end to a location behind
core center ... this will tell you a lot that you simply cannot guess. ...
attached is a sample picture of a manometer.
Jeff

-----Original Message-----
From: Rotary motors in aircraft [mailto:flyrotary@lancaironline.net] On
Behalf Of Bill Bradburry
Sent: Monday, August 10, 2009 6:30 PM
To: Rotary motors in aircraft
Subject: [FlyRotary] Re: T-shirt design

Not bad, Earnest, not bad!  :>)
What my install really needs right now is for me to quit breathlessly
waiting for the next T-shirt idea and get out to the airport and start
working on my plane!! 
B2
-----Original Message-----
From: Rotary motors in aircraft [mailto:flyrotary@lancaironline.net] On
Behalf Of Ernest Christley
Sent: Monday, August 10, 2009 5:35 PM
To: Rotary motors in aircraft
Subject: [FlyRotary] Re: T-shirt design

Bill Bradburry wrote:
>  If there had been this much response for any of the questions we have 
> had about how to get a rotary to fly we would have complete FWF 
> packages (with
> drawings) for every type of plane we are trying to fly!!!
>
> This country doesn't need a health care plan (especially not the one 
> they are ramming down our throats), it needs a T-Shirt!
>
> What is wrong with making a T shirt out of Tracy's button??  Oh, Er, 
> that is right, we are not flying...or building...we are designing a
shirt!!
>
> Anybody got any ideas why my install will not cool?
>
>   

Have you tried removing the jacket and letting your install run around in a
t-shirt?


Sorry.  Couldn't resist.

--
Ernest Christley, President
Ernest@TechnicalTakedown.com

TechnicalTakedown, LLC
www.TechnicalTakedown.com
101 Steep Bank Dr.
Cary, NC  27518
(919) 741-9397


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