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Kelly,
I limit my takeoff power to no more than
42 “ of manifold pressure (“MP”),
usually just 40” . At
altitudes of 5,000 feet and above, I generally run no more than about 36 “
MP (15 GPH) and 180 knots. Engine
RPM is about 5,800. The turbo is
capable of considerably more boost than this, but I have to watch engine water
and oil temps at higher power settings.
I do not want to run more than 200 degrees on oil or water and prefer
180 degrees. I can maintain these
temps (even on hot days) with cowl flap settings from closed to full open as
long as I keep the power settings at or below those described above. One day, I climbed to 11,000 feet and my
GPS groundspeed (with a slight tailwind) was 213 knots. MP was 36”, RPM 6,000. I have a 68” diameter x 84 pitch
Prince P-tip fixed pitch prop coupled to the RWS 2.17/1 reduction unit.
Bob
From: Rotary motors in aircraft
[mailto:flyrotary@lancaironline.net] On
Behalf Of Kelly Troyer
Sent: Thursday, August 12, 2010
11:55 AM
To: Rotary
motors in aircraft
Subject: [FlyRotary] Turbo
Questions
Now that I presume you have put several hours
on your 13B/Turbo installation I would
like to ask a few performance questions............I
have been going through compressor
maps from "Turbonetics" and was wondering what
boost numbers you are seeing at
various rpm's and altitudes from your 60-1 turbo.............I
am looking at the TO-4E with
trims from 50 to 60 and of course your
60-1.............Several of these turbo's would do
a reasonable job but I would prefer to chose one that
will be most efficient at about a
maximum 5 lbs or less boost (1.35 pressure ratio) and at the
lowest turbine rpm..........
I probably will not find one that is perfect but will
try to pick the best compromise from
the choices.............John Slade if you read this
would appreceiate some of the same
info on your TO4E-50 as I believe you have the most
hours on this Turbo...........
Bob I realize that you have the 1.15 a/r turbine
housing (which I lean toward to avoid
overspeed at oxygen altitude) and John you
have the .96 a/r housing for moderate
altitude.............Another factor is if the propeller
pitch is fixed or adjustable.........I have
a inflight adjust "IVO" as does John Slade
and I do not recall what you have Bob.........
Kelly Troyer
"Dyke Delta"_13B ROTARY Engine
"RWS"_RD1C/EC2/EM2
"Mistral"_Backplate/Oil Manifold
From: "Rogers, Bob J." <BRogers@FDIC.gov>
To: Rotary
motors in aircraft <flyrotary@lancaironline.net>
Sent: Fri, April 23, 2010 1:49:34
PM
Subject: [FlyRotary] Re: Rotary
engine aircraft in Dallas
area
My turbo is a Turbonetics 60-1 compressor
trim, with 1.15 A/R divided tang, oil to bearings, and water cooled. See
the following link.
http://www.agpturbo.com/product.php?productid=16138&cat=252&page=1
or the attached .pdf file (if it can be transmitted).
Bob
From: Rotary motors in aircraft
[mailto:flyrotary@lancaironline.net] On
Behalf Of Kelly Troyer
Sent: Wednesday, April 21, 2010
3:52 PM
To: Rotary
motors in aircraft
Subject: [FlyRotary] Rotary engine
aircraft in Dallas
area
Curious as to the make,model, Compressor Trim and A/R of
the
Turbine housing of your Turbo ??...................
--
Kelly Troyer
"Dyke Delta"_13B ROTARY Engine
"RWS"_RD1C/EC2/EM2
"Mistral"_Backplate/Oil Manifold
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