Today's Message Index:
----------------------
1. 01:27 AM - Re: Fuel flow markings (Carlos Trigo)
2. 08:38 AM - Re: Fuel flow markings (Phil Perry)
3. 01:22 PM - Re: Fuel flow markings (Carlos Trigo)
4. 03:38 PM - Re: Fuel flow markings (Kelly McMullen)
Message 1
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| Subject: | Re: Fuel flow markings |
Thank you Robert and Kelly
Anyone else has numbers?
Carlos
Enviado do meu iPhone
> No dia 09/02/2020, =C3-s 03:20, Robert Jones <rjones560xl@gmail.com> esc
reveu:
>
> =EF=BBSorry, I have a Barrett Precision BPE540-X that has 9-1 pistons a
nd cold air induction. Barrett rated it at 290 hp. A stock engine would have
lower fuel flow.
>
> Robert Jones
>
>>> On Feb 8, 2020, at 17:55, Kelly McMullen <apilot2@gmail.com> wrote:
>>>
>> =EF=BB
>> Hmm, that is awful high fuel flow for takeoff. I rarely see over 24.5 wit
h Bendix RSA fuel injection., with stock compression and magnetos.
>> Pretty good rule of thumb is 9-9.5 gph per 100 hp. 27 gph at takeoff is a
number usually associated with close to 300 hp.
>> At idle I will be under 3 gph..
>> Sent from my TRS-80 Model 100
>>
>>
>>> On Sat, Feb 8, 2020 at 6:24 PM Robert Jones <rjones560xl@gmail.com> wrot
e:
>>>
>>> Red Lower 0-3.5
>>> Green 3.5-28.5
>>> Yellow 28.5-30
>>> Red 30
>>>
>>> That should get you started. I have an Airflow Performance FM 300. Idle c
an dip below 4 and Takeoff Power can hit 28.5.
>>>
>>> Robert Jones
>>>
>>> > On Feb 8, 2020, at 09:37, Carlos Trigo <trigo@mail.telepac.pt> wrote:
>>> >
epac.pt>
>>> >
>>> > Guys
>>> >
>>> > I am now making the final configurations of my EFIS, and one of them i
s the Fuel Flow.
>>> > For those of you who also have an RV-10 with Lycoming IO-540 engine an
d C/S prop, will you please share your fuel flow markings,
>>> >
>>> > Red (lower) range 0 - x gal/h
>>> > Yellow (lower) range x - y gal/h
>>> > Green range y - z gal/h
>>> > Yellow (upper) range z - w gal/h
>>> > Red (upper) range w - t gal/h
>>> >
>>> > Thanks in advance
>>> > Carlos
>>> >
>>> >
>>> >
>>> >
>>> >
>>> >
>>> >
>>>
>>> ==========
>>> br> fts!)
>>> r> > rel="noreferrer" target="_blank">http://www.matronics.com/contr
ibution
>>> -Matt Dralle, List Admin.
>>> ==========
>>> -List" rel="noreferrer" target="_blank">http://www.matronics.com/Nav
igator?RV10-List
>>> ==========
>>> FORUMS -
>>> eferrer" target="_blank">http://forums.matronics.com
>>> ==========
>>> WIKI -
>>> errer" target="_blank">http://wiki.matronics.com
>>> ==========
>>> b Site -
>>> -Matt Dralle, List Admin.
>>> rel="noreferrer" target="_blank">http://www.matronics.com/contributi
on
>>> ==========
>>>
>>>
>>>
Message 2
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| Subject: | Re: Fuel flow markings |
The don=99t have them marked at all. Fuel flows range too much from i
dle to take off power and the last thing I want is an alarm or nagging yello
w left flashing alert on the panel.
It might be 2gph at idle. 25 on take off. Or anywhere in between. You ev
entually learn where the fuel flow needs to be and if it jives with your pow
er setting/egt=99s.
So there is no such thing as a fuel flow band in my airplane because there a
re far too many variables to say any band is the right band.
Now fuel pressure? That=99s a different thing. When fuel pressure b
egins to drop, I want to know immediately.
PhI=99m
Sent from my iPhone
> On Feb 9, 2020, at 3:31 AM, Carlos Trigo <trigo@mail.telepac.pt> wrote:
>
> =EF=BBThank you Robert and Kelly
>
> Anyone else has numbers?
>
> Carlos
>
> Enviado do meu iPhone
>
>> No dia 09/02/2020, =C3-s 03:20, Robert Jones <rjones560xl@gmail.com> es
creveu:
>>
>> =EF=BBSorry, I have a Barrett Precision BPE540-X that has 9-1 pistons a
nd cold air induction. Barrett rated it at 290 hp. A stock engine would have
lower fuel flow.
>>
>> Robert Jones
>>
>>>> On Feb 8, 2020, at 17:55, Kelly McMullen <apilot2@gmail.com> wrote:
>>>>
>>> =EF=BB
>>> Hmm, that is awful high fuel flow for takeoff. I rarely see over 24.5 wi
th Bendix RSA fuel injection., with stock compression and magnetos.
>>> Pretty good rule of thumb is 9-9.5 gph per 100 hp. 27 gph at takeoff is a
number usually associated with close to 300 hp.
>>> At idle I will be under 3 gph..
>>> Sent from my TRS-80 Model 100
>>>
>>>
>>>> On Sat, Feb 8, 2020 at 6:24 PM Robert Jones <rjones560xl@gmail.com> wro
te:
>>>>
>>>> Red Lower 0-3.5
>>>> Green 3.5-28.5
>>>> Yellow 28.5-30
>>>> Red 30
>>>>
>>>> That should get you started. I have an Airflow Performance FM 300. Idle
can dip below 4 and Takeoff Power can hit 28.5.
>>>>
>>>> Robert Jones
>>>>
>>>> > On Feb 8, 2020, at 09:37, Carlos Trigo <trigo@mail.telepac.pt> wrote:
>>>> >
lepac.pt>
>>>> >
>>>> > Guys
>>>> >
>>>> > I am now making the final configurations of my EFIS, and one of them i
s the Fuel Flow.
>>>> > For those of you who also have an RV-10 with Lycoming IO-540 engine a
nd C/S prop, will you please share your fuel flow markings,
>>>> >
>>>> > Red (lower) range 0 - x gal/h
>>>> > Yellow (lower) range x - y gal/h
>>>> > Green range y - z gal/h
>>>> > Yellow (upper) range z - w gal/h
>>>> > Red (upper) range w - t gal/h
>>>> >
>>>> > Thanks in advance
>>>> > Carlos
>>>> >
>>>> >
>>>> >
>>>> >
>>>> >
>>>> >
>>>> >
>>>>
>>>> ==========
>>>> br> fts!)
>>>> r> > rel="noreferrer" target="_blank">http://www.matronics.com/cont
ribution
>>>> -Matt Dralle, List Admin.
>>>> ==========
>>>> -List" rel="noreferrer" target="_blank">http://www.matronics.com/Na
vigator?RV10-List
>>>> ==========
>>>> FORUMS -
>>>> eferrer" target="_blank">http://forums.matronics.com
>>>> ==========
>>>> WIKI -
>>>> errer" target="_blank">http://wiki.matronics.com
>>>> ==========
>>>> b Site -
>>>> -Matt Dralle, List Admin.
>>>> rel="noreferrer" target="_blank">http://www.matronics.com/contribut
ion
>>>> ==========
>>>>
>>>>
>>>>
Message 3
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| Subject: | Re: Fuel flow markings |
Phil
In that case, which are your markings for the fuel pressure?
Carlos
Enviado do meu iPhone
> No dia 09/02/2020, =C3-s 16:44, Phil Perry <philperry9@gmail.com> escrev
eu:
>
> =EF=BBThe don=99t have them marked at all. Fuel flows range too m
uch from idle to take off power and the last thing I want is an alarm or nag
ging yellow left flashing alert on the panel.
>
> It might be 2gph at idle. 25 on take off. Or anywhere in between. You e
ventually learn where the fuel flow needs to be and if it jives with your po
wer setting/egt=99s.
>
> So there is no such thing as a fuel flow band in my airplane because there
are far too many variables to say any band is the right band.
>
> Now fuel pressure? That=99s a different thing. When fuel pressure
begins to drop, I want to know immediately.
>
> PhI=99m
>
>
> Sent from my iPhone
>
>>> On Feb 9, 2020, at 3:31 AM, Carlos Trigo <trigo@mail.telepac.pt> wrote:
>>>
>> =EF=BBThank you Robert and Kelly
>>
>> Anyone else has numbers?
>>
>> Carlos
>>
>> Enviado do meu iPhone
>>
>>> No dia 09/02/2020, =C3-s 03:20, Robert Jones <rjones560xl@gmail.com> e
screveu:
>>>
>>> =EF=BBSorry, I have a Barrett Precision BPE540-X that has 9-1 pistons
and cold air induction. Barrett rated it at 290 hp. A stock engine would ha
ve lower fuel flow.
>>>
>>> Robert Jones
>>>
>>>>> On Feb 8, 2020, at 17:55, Kelly McMullen <apilot2@gmail.com> wrote:
>>>>>
>>>> =EF=BB
>>>> Hmm, that is awful high fuel flow for takeoff. I rarely see over 24.5 w
ith Bendix RSA fuel injection., with stock compression and magnetos.
>>>> Pretty good rule of thumb is 9-9.5 gph per 100 hp. 27 gph at takeoff is
a number usually associated with close to 300 hp.
>>>> At idle I will be under 3 gph..
>>>> Sent from my TRS-80 Model 100
>>>>
>>>>
>>>>> On Sat, Feb 8, 2020 at 6:24 PM Robert Jones <rjones560xl@gmail.com> wr
ote:
>>>>>
>>>>> Red Lower 0-3.5
>>>>> Green 3.5-28.5
>>>>> Yellow 28.5-30
>>>>> Red 30
>>>>>
>>>>> That should get you started. I have an Airflow Performance FM 300. Idl
e can dip below 4 and Takeoff Power can hit 28.5.
>>>>>
>>>>> Robert Jones
>>>>>
>>>>> > On Feb 8, 2020, at 09:37, Carlos Trigo <trigo@mail.telepac.pt> wrote
:
>>>>> >
elepac.pt>
>>>>> >
>>>>> > Guys
>>>>> >
>>>>> > I am now making the final configurations of my EFIS, and one of them
is the Fuel Flow.
>>>>> > For those of you who also have an RV-10 with Lycoming IO-540 engine a
nd C/S prop, will you please share your fuel flow markings,
>>>>> >
>>>>> > Red (lower) range 0 - x gal/h
>>>>> > Yellow (lower) range x - y gal/h
>>>>> > Green range y - z gal/h
>>>>> > Yellow (upper) range z - w gal/h
>>>>> > Red (upper) range w - t gal/h
>>>>> >
>>>>> > Thanks in advance
>>>>> > Carlos
>>>>> >
>>>>> >
>>>>> >
>>>>> >
>>>>> >
>>>>> >
>>>>> >
>>>>>
>>>>> ==========
>>>>> br> fts!)
>>>>> r> > rel="noreferrer" target="_blank">http://www.matronics.com/con
tribution
>>>>> -Matt Dralle, List Admin.
>>>>> ==========
>>>>> -List" rel="noreferrer" target="_blank">http://www.matronics.com/N
avigator?RV10-List
>>>>> ==========
>>>>> FORUMS -
>>>>> eferrer" target="_blank">http://forums.matronics.com
>>>>> ==========
>>>>> WIKI -
>>>>> errer" target="_blank">http://wiki.matronics.com
>>>>> ==========
>>>>> b Site -
>>>>> -Matt Dralle, List Admin.
>>>>> rel="noreferrer" target="_blank">http://www.matronics.com/contribu
tion
>>>>> ==========
>>>>>
>>>>>
>>>>>
Message 4
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| Subject: | Re: Fuel flow markings |
I don't know what Phil has. I know that the mechanical pump had limits
until about 5 years ago, which was 15 psi minimum, 30 psi maximum.
Later production pumps may put out more than 30 psi, perhaps as much as 35
psi. It causes a problem for type certificated aircraft where the
instrument markings are airworthiness limitations and were based on
Lycoming's previous production limits.
Typical, cruise pump pressure is going to be in the mid-twenties. While
there are reports of the engine continuing to run okay on less than 15 psi,
there are no guarantees.
Sent from my TRS-80 Model 100
On Sun, Feb 9, 2020 at 2:26 PM Carlos Trigo <trigo@mail.telepac.pt> wrote:
> Phil
>
> In that case, which are your markings for the fuel pressure?
>
> Carlos
>
> Enviado do meu iPhone
>
> No dia 09/02/2020, =C3-s 16:44, Phil Perry <philperry9@gmail.com> escre
veu:
>
> =EF=BBThe don=99t have them marked at all. Fuel flows range too
much from idle
> to take off power and the last thing I want is an alarm or nagging yellow
> left flashing alert on the panel.
>
> It might be 2gph at idle. 25 on take off. Or anywhere in between. You
> eventually learn where the fuel flow needs to be and if it jives with you
r
> power setting/egt=99s.
>
> So there is no such thing as a fuel flow band in my airplane because ther
e
> are far too many variables to say any band is the right band.
>
> Now fuel pressure? That=99s a different thing. When fuel pressur
e begins
> to drop, I want to know immediately.
>
> PhI=99m
>
>
> Sent from my iPhone
>
> On Feb 9, 2020, at 3:31 AM, Carlos Trigo <trigo@mail.telepac.pt> wrote:
>
> =EF=BBThank you Robert and Kelly
>
> Anyone else has numbers?
>
> Carlos
>
> Enviado do meu iPhone
>
> No dia 09/02/2020, =C3-s 03:20, Robert Jones <rjones560xl@gmail.com>
> escreveu:
>
> =EF=BBSorry, I have a Barrett Precision BPE540-X that has 9-1 pistons
and cold
> air induction. Barrett rated it at 290 hp. A stock engine would have lowe
r
> fuel flow.
>
> Robert Jones
>
> On Feb 8, 2020, at 17:55, Kelly McMullen <apilot2@gmail.com> wrote:
>
> =EF=BB
> Hmm, that is awful high fuel flow for takeoff. I rarely see over 24.5 wit
h
> Bendix RSA fuel injection., with stock compression and magnetos.
> Pretty good rule of thumb is 9-9.5 gph per 100 hp. 27 gph at takeoff is a
> number usually associated with close to 300 hp.
> At idle I will be under 3 gph..
>
> Sent from my TRS-80 Model 100
>
>
> On Sat, Feb 8, 2020 at 6:24 PM Robert Jones <rjones560xl@gmail.com> wrote
:
>
>>
>> Red Lower 0-3.5
>> Green 3.5-28.5
>> Yellow 28.5-30
>> Red 30
>>
>> That should get you started. I have an Airflow Performance FM 300. Idle
>> can dip below 4 and Takeoff Power can hit 28.5.
>>
>> Robert Jones
>>
>> > On Feb 8, 2020, at 09:37, Carlos Trigo <trigo@mail.telepac.pt> wrote:
>> >
epac.pt>
>> >
>> > Guys
>> >
>> > I am now making the final configurations of my EFIS, and one of them i
s
>> the Fuel Flow.
>> > For those of you who also have an RV-10 with Lycoming IO-540 engine an
d
>> C/S prop, will you please share your fuel flow markings,
>> >
>> > Red (lower) range 0 - x gal/h
>> > Yellow (lower) range x - y gal/h
>> > Green range y - z gal/h
>> > Yellow (upper) range z - w gal/h
>> > Red (upper) range w - t gal/h
>> >
>> > Thanks in advance
>> > Carlos
>> >
>> >
>> >
>> >
>> >
>> >
>> >
>>
>> ==========
>> br> fts!)
>> r> > rel="noreferrer" target="_blank">
>> http://www.matronics.com/contribution
>> -Matt Dralle, List Admin.
>> ==========
>> -List" rel="noreferrer" target="_blank">
>> http://www.matronics.com/Navigator?RV10-List
>> ==========
>> FORUMS -
>> eferrer" target="_blank">http://forums.matronics.com
>> ==========
>> WIKI -
>> errer" target="_blank">http://wiki.matronics.com
>> ==========
>> b Site -
>> -Matt Dralle, List Admin.
>> rel="noreferrer" target="_blank">http://www.matronics.com/contributi
on
>> ==========
>>
>>
>>
>>
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