Would you guys please change the subject line of the message when the topic changes substantially?  I utilize the subject line to determine  if a complete read is required.  The subject "Test" came from someone testing their e-mail account and now encompasses turbo chargers,  exhaust, and carburation.

Best Regards,

Steve Thomas
________________________________________________________________________

On Jul 28, 2006, at 9:27 AM, Ed Anderson wrote:

Atomization was indeed a benefit when using carburetors with "suck through" turbo systems.  The spinning compressor wheel reportedly  did give some measurable benefits in mileage (when not under boost)  due to better atomization of fuel.  When I turbo charged two Honda  Civics back in 1976-78, I could tell a small increase in mileage.

However, in our installations,  with fuel injectors down stream of  the spinning blades, I personally doubt there is any atomization  benefit since all the compressor blades are churning - is air.

Ed
Ed Anderson
Rv-6A N494BW Rotary Powered
Matthews, NC
eanderson@carolina.rr.com
http://members.cox.net/rogersda/rotary/configs.htm#N494BW

----- Original Message ----- From: "Steve Brooks"  <cozy4pilot@gmail.com>
To: "Rotary motors in aircraft" <flyrotary@lancaironline.net>
Sent: Friday, July 28, 2006 12:18 PM
Subject: [FlyRotary] Re: Test

Ed,
The only other comment I could make in favor of the turbo, is that  it's
suppose to provide increased fuel economy, even at low boost  levels by
improving the atomization of the fuel charge.

I'm not sure about how true this is, but that is what I read  somewhere along
the line.

I've had my T04 for about a year and a half now, but decided not  to replace
it until I got it moved.  For one, the stock turbo hasn't given me  any
trouble, and it will require a fair amount of work to get it  changed over.
My turbo is the same identical turbo that Paul and Lou are  running. It's a
Garrett .96 A/r with an s-trim compressor.

I'd like to have gone higher than the .96, but the exhaust side  turbine gets
really large if you go any bigger.  Paul has had good luck so far  with their
turbo.

I'm aware of the oil temperature problem.  I had told him early on about my
concerns when I first saw their set up.  I told him about the  problems that
I had, and what it took to resolve it.  They are now increasing  the air flow
to the cooler, and may go to 2 oil coolers depending on how their  next test
go.  I'm sure hat they'll get it worked out.
I rode in their plane on a fast taxi, and it is amazing how much  power it
has.  As I recalled it dyno'd at 580 HP at 10lbs of boost.  Their engine
sounds like it is revving 10,000 RPM's when it throttles up, even though it
is only 4-5 K. I guess that I'm used to the way mine sounds, and  they have
that additional rotor adding to the exhaust note.

I can't wait to hear it fly.  It should be interesting to say the least.

Steve

-----Original Message-----
From: Rotary motors in aircraft  [mailto:flyrotary@lancaironline.net]On
Behalf Of Ed Anderson
Sent: Friday, July 28, 2006 10:47 AM
To: Rotary motors in aircraft
Subject: [FlyRotary] Re: Test


Yep!  I'm sitting here monitoring some remodeling contractors converting our
garage to the wife's desires.  But, tomorrow, I get to raise my  hangar door
frame!!  Then I can put on the sheets and start configuring the hydraulic
system that opens the doorl

I'm afraid I agree with you Steve.  The stock Mazda turbo simply  was not
designed for the operating stresses we are able to put on it.  I believe if
you use modest boost only for take off (short term) and not for  cruise speed
then it may last a decent amount of time, but that sort of defeats  the idea
of the turbo providing at least sea level NA type power for high altitude
high speed cruise.

I have two turbos sitting on my work bench - I've toyed with the  idea on and
off for years, but just couldn't convince myself that I needed one since I
tend to cruise at lower airspeeds to keep the fuel burn and $$  down. If I
needed some extra boost just for takeoff, I'd probably just go  NO2. But, if
I were to do a turbo, it would not be with the stock Mazda turbo  but would
use something like the TO4.

Yes, I tend not to fly at all in the July August time frame - just  too hot
for me to enjoy.  Of coursed, I could get up before the break of  dawn and
find some cooler air.  But, I tend to do my tinkering during those months
and fly starting September.

Paul and Lou are working out some oil cooling issues before  jumping into
their test program in earnest.

Ed
----- Original Message -----
From: "Steve Brooks" <cozy4pilot@gmail.com>
To: "Rotary motors in aircraft" <flyrotary@lancaironline.net>
Sent: Friday, July 28, 2006 10:36 AM
Subject: [FlyRotary] Re: Test

Hi Ed,
Things are kind of quiet with Oshkosh going on.  I have been  following the
thread on the exhaust issues with the mufflers.

I still haven't decided whether to keep the turbo or not.  I  haven't had
any
trouble with mine, but I do believe that it is just a matter of  time. I
also am very careful about how hard I push it.

I have all of the parts to switch to a T04 turbo, except for the exhaust
pipe and heat shield.  I think that I'd like to try it without  the turbo
first, just to see how much power I have, and how much difference  it makes
in the temps.  The 30+ lbs savings in weight would also be a  plus.  I want
to see what kind of result that Buly gets running without a muffler.
Seems
like it would be pretty loud, but I may be wrong.

Whatever I do, I'll probably do after I get the plane moved up to  NC. I
have the hours flown off.  I just need to fly it up here.  August doesn't
provide the best flying weather though, so I'll probably wait until
September to make the move.

Steve Brooks

-----Original Message-----
From: Rotary motors in aircraft  [mailto:flyrotary@lancaironline.net]On
Behalf Of Ed Anderson
Sent: Friday, July 28, 2006 10:03 AM
To: Rotary motors in aircraft
Subject: [FlyRotary] Re: Test


It works

Ed

----- Original Message -----
From: "Steve Brooks" <cozy4pilot@gmail.com>
To: "Rotary motors in aircraft" <flyrotary@lancaironline.net>
Sent: Friday, July 28, 2006 9:58 AM
Subject: [FlyRotary] Test

I just changed my email address for Fly Rotary over to my Gmail account,
and
wanted to make sure that it is working.


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