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"mine only goes up to 41.8 inches"
A bit of confusion here.
The MAP table has nothing to do with what the MAP sensor can handle.
I had arbitrarily thought that 43"Hg was a reasonable target for max boost for this application so I spread the MAP table over that range. This only means that the last MAP table address is used at any MP above 42". The MAP sensor continues to increase the fuel delivery all the way to 60" Hg.
So, the question is, do you find that you need a different mixture compensation factor between 42" and 45"? I haven't heard anyone say that but let me know if that is the case. I would suggest adjusting the MAP table at your highest intended operating MP and see if it is a problem.
Tracy
On Mon, Nov 22, 2010 at 11:17 PM, Bill Bradburry <bbradburry@bellsouth.net> wrote:
Mine isn’t the early square box. It
is the later rectangular box. I am wondering which Map sensor it has in it. Tracy said all the
rectangular ones had the 2 bar, but mine only goes up to 41.8 inches.
Bill B
From: Rotary motors in aircraft
[mailto:flyrotary@lancaironline.net] On
Behalf Of Kelly Troyer
Sent: Monday, November 22, 2010
9:59 PM
To: Rotary
motors in aircraft
Subject: [FlyRotary] Re Trailing
Coil Disable to Turbo too? Was: N20
Ditto for me also...........My EC2 is an early square box
and I had to request the 2 BAR
MAP Sensor when it was purchased...............
Kelly
Troyer
"DYKE DELTA JD2" (Eventually)
"13B
ROTARY"_ Engine
"RWS"_RD1C/EC2/EM2
"MISTRAL"_Backplate/Oil Manifold
"TURBONETICS"_TO4E50
Turbo
From: David
Leonard <wdleonard@gmail.com>
To: Rotary
motors in aircraft <flyrotary@lancaironline.net>
Sent: Mon, November 22, 2010
6:12:35 PM
Subject: [FlyRotary] Re: Trailing
Coil Disable to Turbo too? Was: N20
I have one of the early aquare boxes, at that time I did have to
request a special tubo model. So Tracy
must have changed it after you bought yours.
On Mon, Nov 22, 2010 at 3:50 PM, Bill Bradburry <bbradburry@bellsouth.net>
wrote:
Tracy,
Not that I need or want to waste bins with unused manifold
pressures, but is that something that you program into the EC-2 if it is going
to be used with a turbo? My unit is the rectangular one bought in
Oct 2005, and upgraded in Oct 2007. it only goes up to 41.8 inches of
pressure in the top bin.???
Bill B
From: Rotary motors in aircraft
[mailto:flyrotary@lancaironline.net] On Behalf Of Tracy
Sent: Monday, November 22, 2010
11:05 AM
To: Rotary
motors in aircraft
Subject: [FlyRotary] Re: Trailing
Coil Disable to Turbo too? Was: N20
All EC2/3s in the
rectangular box (past 8 years or so) use 2 BAR MAP sensors which work up to
60" Hg MP.
Tracy
On Mon, Nov 22,
2010 at 10:45 AM, Kelly Troyer <keltro@att.net> wrote:
My EC2 "MAP" sensors are for boosted use ( I presume MAP sensors
are different for
boosted use
)...............I have seen what MP it is good for but cannot recall the
number off
the top of
my head !!..............Tracy
??.........Help !!
Kelly
Troyer
"DYKE DELTA JD2" (Eventually)
"13B
ROTARY"_ Engine
"RWS"_RD1C/EC2/EM2
"MISTRAL"_Backplate/Oil Manifold
"TURBONETICS"_TO4E50
Turbo
Dave,
The top bin, +127, on my EC-2 is 41.8 inches of manifold
pressure. Does yours go higher?
I just figured that Tracy
had something in mind when he set those limits. What does the EC-2 do
when you go outside its limits? Does it keep everything the same as the
last time it saw an instruction?
I have no intention of boosting my setup and I am roughly at sea
level, (55 Ft ), so with ram air, I might be able to see 31 inches. The
rest I will never use.
You are welcome to borrow them if you like. :>)
Bill B
From: Rotary motors in aircraft
[mailto:flyrotary@lancaironline.net] On Behalf Of David Leonard
Sent: Monday, November 22, 2010
9:25 AM
To: Rotary
motors in aircraft
Subject: [FlyRotary] Re: Trailing
Coil Disable to Turbo too? Was: N20
I have no knowledge of boosted rotary engines. It is a fad. It
will go away.
LOL, I have no knowledge either. But that is a different matter.
Thanks for the
detailed reply, as expected, only I can choose my level of boost and no one has
the magic number of when I will run into problems with detonation. And
who am I kidding by trying to push the limit. Inching up the
power... If 45 inches is no problem, then 46" is going to be OK...
Unfortunately,
having "a problem" will mean an engine re-build if not another
landing on a road. So I must set an arbitrary limit and stick to
it....
(drone voice of
Homer Simpson): Eight Hundred horse power..
.. No, stick to
the boost limit....
...Eight Hundred
horse power...
.. This is an
airplane, we are not safely on the ground...
..Eight Hundred
horse power...
.. Stay away from
the light, do not go into the light!
45 inches
MAP. That is my final word, That is law.
--
David Leonard
Turbo Rotary RV-6 N4VY
http://N4VY.RotaryRoster.net
http://RotaryRoster.net
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