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.


--
Homepage:  http://www.flyrotary.com/
Archive and UnSub:   http://mail.lancaironline.net/lists/flyrotary/

--
Homepage:  http://www.flyrotary.com/
Archive and UnSub:   http://mail.lancaironline.net/lists/flyrotary/


--
Homepage:  http://www.flyrotary.com/
Archive and UnSub:   http://mail.lancaironline.net/lists/flyrotary/

--
Homepage:  http://www.flyrotary.com/
Archive and UnSub:   http://mail.lancaironline.net/lists/flyrotary/


--
Homepage:  http://www.flyrotary.com/
Archive and UnSub:   http://mail.lancaironline.net/lists/flyrotary/

--
Homepage:  http://www.flyrotary.com/
Archive and UnSub:   http://mail.lancaironline.net/lists/flyrotary/