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[203.59.74.185]) by smtp.gmail.com with ESMTPSA id v17-20020a62c311000000b005087c23ad8dsm10350044pfg.0.2022.05.24.21.02.59 for (version=TLS1_2 cipher=ECDHE-ECDSA-AES128-GCM-SHA256 bits=128/128); Tue, 24 May 2022 21:03:00 -0700 (PDT) Content-Type: multipart/alternative; boundary="Apple-Mail=_F620F423-C2FB-4679-9B72-401D43F15A6B" Mime-Version: 1.0 (Mac OS X Mail 16.0 \(3696.80.82.1.1\)) Subject: Re: [FlyRotary] EC2/3 Tuning Date: Wed, 25 May 2022 12:02:56 +0800 References: To: Rotary motors in aircraft In-Reply-To: Message-Id: <1BE64B7E-98BE-43B0-B400-0D7D1F27786D@gmail.com> X-Mailer: Apple Mail (2.3696.80.82.1.1) --Apple-Mail=_F620F423-C2FB-4679-9B72-401D43F15A6B Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset=utf-8 Thanks guys for the feedback. Appreciated. Steve I > On 25 May 2022, at 8:20 am, David COOK hoursaway1@comcast.net = wrote: >=20 > Very good thing to keep in mind, we are not normal. I don't think that = came out right. David=20 >> On 05/24/2022 8:02 PM Andrew Martin andrew@martinag.com.au = wrote: >>=20 >>=20 >> Hi Steve >>=20 >> I concur with Finn on this issue. there is enough difference between = aircraft brands that all pilots need to be checked out & proficient in = specific functions before taking command. >> If your pilot friends were going from piston to turbine they would = not expect to operate them the same way, and as such need to learn the = peculiarities. going piston to efi rotary is no different. >>=20 >> Andrew=20 >>=20 >>=20 >>=20 >>=20 >>=20 >> On Tue, 24 May 2022 at 21:33, Finn Lassen finn.lassen@verizon.net = > wrote:=20 >> Here's my opinions:=20 >>=20 >> No one should be flying an EC2/3 equipped airplane without being = fully=20 >> trained on their functioning and installation. Without that, they = would=20 >> have no chance of in-flight trouble shooting. What to do if an = injector=20 >> clogs? What to do if a coil fails? and so on.=20 >>=20 >> Having extra mixture range is a feature, not a liability. Say your = fuel=20 >> pump goes weak or filter starts clogging, pressure regulator goes bad = or=20 >> fuel pressure otherwise starts dropping.=20 >>=20 >> Having to rely on a gut reaction of blindly turning the knob all rich=20= >> without listening to the engine would disqualify the pilot from = flying=20 >> that airplane.=20 >>=20 >> Having said all that, should be no harm in experimenting with Mode 2.=20= >> You can always reset it:=20 >>=20 >> If you have an EM3 engine monitor, you can check the setting of this=20= >> parameter on the engine info page by holding the Acknowledge button=20= >> (button 4) and then pressing UP (button 1). The dynamic range=20 >> parameter is the 6th (next to last) number on line 4. The value is=20= >> displayed in hexadecimal format.=20 >> Resetting Injection dynamic range to factory default setting=20 >> 1. Turn the EC3 power off.=20 >> 2. Select mode 2 on the Mode Select switch.=20 >> 3. Press and hold the Program Store switch.=20 >> 4. While holding down the Program Store switch, turn on the power = switch=20 >> to the EC3.=20 >> 5. Keep holding the Program Store switch for about 1 second and then=20= >> release it.=20 >> 6. ... will now be restored to factory settings and you can begin=20 >> programming after starting the engine.=20 >> 7. Return the Mode Select switch to 0.=20 >>=20 >> Check your EC2 manual.=20 >>=20 >> Finn=20 >>=20 >> On 5/24/2022 1:48 AM, Stephen Izett stephen.izett@gmail.com = wrote:=20 >> > Hi people.=20 >> >=20 >> > I have a question about tuning the EC2/3=E2=80=99s and particularly = Mode #2 'Dynamic Range Adjust'=20 >> >=20 >> > I have left Mode #2 at the default setting and no problem tuning. = However here is the thing:=20 >> >=20 >> > I have some friends that are very experienced pilots (unlike = myself) and on flying the Glasair they have asked if it is possible to = adjust the mixture control so that at:=20 >> > 1. Full CW rotation sets full rich which in my experience and = understanding is ~0.85 lambda or 12.5:1 AFM, and=20 >> > 2. Full CCW rotation sets full lean, again I=E2=80=99m thinking = ~1.07 lambda or 15.8:1=20 >> >=20 >> > It's really point 1. I=E2=80=99m interested in.=20 >> >=20 >> > What my friends are asking is that they are confident that behind = their Lycomings in an emergency they just push that Red knob all the way = in and get on with flying the aeroplane.=20 >> > In my setup, if I turn the Mixture Knob full rich it would probably = make the fan stop. My Mixture Knob set at 12 O=E2=80=99clock is about = Stoichiometric and best power is less than 2 O=E2=80=99clock.=20 >> >=20 >> > For them, this is a significant safety issue.=20 >> >=20 >> > But I=E2=80=99m struggling with the description in the Programming = Guide.=20 >> >=20 >> > Can anyone confirm that adjusting Mode #2 'Dynamic Range Adjust=E2=80= =99 will change, well, the 'Dynamic Range' of both the mixture = correction table and the Mixture Knob.=20 >> >=20 >> > Could I reduce the Dynamic Range parameter so that once the MCT is = set correctly I will then have a situation where quickly turning the = Mixture Control FULL CW the Engine will be at Full Rich.=20 >> >=20 >> > If it does what I=E2=80=99m thinking/hoping, the adjustments = required in the MCT will be larger.=20 >> > Currently my MCT adjustment amounts are positive and negative about = half of the available range (-70 & +60 decimal)=20 >> > So by reducing the Dynamic Range by approx. half, will I then need = the full +- 127 decimal range of the MCT and will the Mixture Knob then = be approx half as sensitive?=20 >> >=20 >> > I didn=E2=80=99t want to mess up my tune before asking if someone = can confirm how Mode #2 works.=20 >> >=20 >> > Thanks=20 >> >=20 >> > Steve Izett=20 >> > Renesis 4 port RD1-C EC2 EM3=20 >> >=20 >> >=20 >> >=20 >> >=20 >> >=20 >> >=20 >> > --=20 >> > Homepage: http://www.flyrotary.com/ =20 >> > Archive and UnSub: = http://mail.lancaironline.net:81/lists/flyrotary/List.html = =20 >> >=20 >>=20 >>=20 >> --=20 >> Homepage: http://www.flyrotary.com/ =20 >> Archive and UnSub: = http://mail.lancaironline.net:81/lists/flyrotary/List.html = =20 --Apple-Mail=_F620F423-C2FB-4679-9B72-401D43F15A6B Content-Transfer-Encoding: quoted-printable Content-Type: text/html; charset=utf-8 Thanks guys for the feedback.
Appreciated.

Steve I

On 25 May 2022, at 8:20 am, = David COOK hoursaway1@comcast.net <flyrotary@lancaironline.net> wrote:

=20 =20 =20
Very good thing to keep in mind, = we are not normal. I don't think that came out right. = David
On 05/24/2022 8:02 PM Andrew Martin andrew@martinag.com.au <flyrotary@lancaironline.net> wrote:


Hi Steve

I concur with Finn on this issue. there is enough = difference between aircraft brands that all pilots need to be = checked out & proficient in specific functions before taking = command.
If your pilot friends were going from piston to turbine they = would not expect to operate them the same way, and as such need to = learn the peculiarities. going piston to efi rotary is no different.

Andrew





On Tue, 24 May 2022 at 21:33, Finn Lassen finn.lassen@verizon.net <flyrotary@lancaironline.net> wrote:
Here's my opinions:

No one should be flying an EC2/3 equipped airplane = without being fully=20
trained on their functioning and installation. = Without that, they would=20
have no chance of in-flight trouble shooting. What = to do if an injector=20
clogs? What to do if a coil fails? and so on.

Having extra mixture range is a feature, not a = liability. Say your fuel=20
pump goes weak or filter starts clogging, pressure = regulator goes bad or=20
fuel pressure otherwise starts dropping.

Having to rely on a gut reaction of blindly turning = the knob all rich=20
without listening to the engine would disqualify the = pilot from flying=20
that airplane.

Having said all that, should be no harm in = experimenting with Mode 2.=20
You can always reset it:

If you have an EM3 engine monitor, you can check the = setting of this=20
parameter on the engine info page by holding the = Acknowledge button=20
(button 4)  and then pressing UP (button = 1).  The dynamic range=20
parameter is the 6th (next to last)  number on = line 4.  The value is=20
displayed in hexadecimal format.
Resetting Injection dynamic range  to factory = default setting
1. Turn the EC3 power off.
2. Select mode 2 on the Mode Select switch.
3. Press and hold the Program Store switch.
4. While holding down the Program Store switch, turn = on the power switch=20
to the EC3.
5. Keep holding the Program Store switch for about 1 = second and then=20
release it.
6. ... will now be restored to factory settings and = you can begin=20
programming after starting the engine.
7. Return the Mode Select switch to 0.

Check your EC2 manual.

Finn

On 5/24/2022 1:48 AM, Stephen Izett stephen.izett@gmail.com wrote:
> Hi people.
>
> I have a question about tuning the EC2/3=E2=80=99= s and particularly Mode #2 'Dynamic Range Adjust'
>
> I have left Mode #2 at the default setting and = no problem tuning. However here is the thing:
>
> I have some friends that are very experienced = pilots (unlike myself) and on flying the Glasair they have asked if it = is possible to adjust the mixture control so that at:
> 1. Full CW rotation sets full rich which in my = experience and understanding is ~0.85 lambda or 12.5:1 AFM, and
> 2. Full CCW rotation sets full lean, again = I=E2=80=99m thinking ~1.07 lambda or 15.8:1
>
> It's really point 1. I=E2=80=99m interested in.
>
> What my friends are asking is that they are = confident that behind their Lycomings in an emergency they just push = that Red knob all the way in and get on with flying the aeroplane.
> In my setup, if I turn the Mixture Knob full = rich it would probably make the fan stop. My Mixture Knob set at 12 = O=E2=80=99clock is about Stoichiometric and best power is less than 2 = O=E2=80=99clock.
>
> For them, this is a significant safety issue.
>
> But I=E2=80=99m struggling with the description = in the Programming Guide.
>
> Can anyone confirm that adjusting Mode #2 = 'Dynamic Range Adjust=E2=80=99 will change, well, the 'Dynamic Range' of = both the mixture correction table and the Mixture Knob.
>
> Could I reduce the Dynamic Range parameter so = that once the MCT is set correctly I will then have a situation where = quickly turning the Mixture Control FULL CW the Engine will be at Full = Rich.
>
> If it does what I=E2=80=99m thinking/hoping, = the adjustments required in the MCT will be larger.
> Currently my MCT adjustment amounts are = positive and negative about half of the available range (-70 & +60 = decimal)
> So by reducing the Dynamic Range by approx. = half, will I then need the full +- 127 decimal range of the MCT and will = the Mixture Knob then be approx half as sensitive?
>
> I didn=E2=80=99t want to mess up my tune before = asking if someone can confirm how Mode #2 works.
>
> Thanks
>
> Steve Izett
> Renesis 4 port RD1-C EC2 EM3
>
>
>
>
>
>
> --
> Homepage:  http://www.flyrotary.com/
> Archive and UnSub:   http://mail.lancaironline.net:81/lists/flyrotary/List.html
>


--
Homepage:  http://www.flyrotary.com/
Archive and UnSub:   http://mail.lancaironline.net:81/lists/flyrotary/List.html

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