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RobHickman(at)aol.com
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 Posted: Tue Nov 24, 2009 5:20 pm Post subject: RV-10 Takeoff Fuel Flow |
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I am in the middle of injector tuning on my RV-10 and my neighbor is convinced that I do not have enough fuel flow on takeoff.
At sea level I am getting:
RPM 2700
MAN 27.9"
24.2 GPH
Rob Hickman
N402RH RV-10
[quote][b]
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rebrunk42(at)gmail.com
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| Posted: Tue Nov 24, 2009 6:02 pm Post subject: RV-10 Takeoff Fuel Flow |
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that is what i get and i have had no problems with power and fuel flow. i operate out of crp. elev. 44 ft . robert i have gami injectors. io540 engine
On Nov 24, 2009, at 7:00 PM, RobHickman(at)aol.com (RobHickman(at)aol.com) wrote:
[quote] I am in the middle of injector tuning on my RV-10 and my neighbor is convinced that I do not have enough fuel flow on takeoff.
At sea level I am getting:
RPM 2700
MAN 27.9"
24.2 GPH
Rob Hickman
N402RH RV-10
| Quote: |
href="http://www.aeroelectric.com">www.aeroelectric.com
href="http://www.buildersbooks.com">www.buildersbooks.com
href="http://www.homebuilthelp.com">www.homebuilthelp.com
href="http://www.matronics.com/contribution">http://www.matronics.com/contribution
href="http://www.matronics.com/Navigator?RV10-List">http://www.matronics.com/Navigator?RV10-List
href="http://forums.matronics.com">http://forums.matronics.com
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jkreidler
Joined: 13 Feb 2008
Posts: 151
Location: Sheboygan Falls WI
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| Posted: Tue Nov 24, 2009 6:12 pm Post subject: Re: RV-10 Takeoff Fuel Flow |
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On take off with the boost pump off we had an average 20.6 PSI (24 PSI high - 18 PSI low) and an average 25.3 GPH (25.4 GPH high - 25.0 GPH low). With the boost pump on we had an average 24.8 PSI (26 PSI high - 23 PSI low) and an average 26.3 GPH (26.4 GPH high - 26.0 GPH low). We have .025 injectors.
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Tony Kolar, Kyle Hokel, Wayne Elser, Jason Kreidler
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ricksked(at)embarqmail.co
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| Posted: Tue Nov 24, 2009 6:24 pm Post subject: RV-10 Takeoff Fuel Flow |
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20 to 21 at 2500 .Msl
Sent via BlackBerry by AT&TFrom: RobHickman(at)aol.com
Date: Tue, 24 Nov 2009 20:00:16 EST
To: <rv10-list(at)matronics.com>
Subject: RV10-List: RV-10 Takeoff Fuel Flow
I am in the middle of injector tuning on my RV-10 and my neighbo= r is=20 convinced that I do not have enough fuel flow on takeoff.
At sea level I am getting:
RPM 2700
MAN 27.9"
24.2 GPH
Rob Hickman
N402RH RV-10
[quote][b]
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partner14
Joined: 12 Jan 2008
Posts: 540
Location: Granbury Texas
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| Posted: Tue Nov 24, 2009 7:56 pm Post subject: RV-10 Takeoff Fuel Flow |
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Rob, if it's a stk IO540 with std compression, those appear to be ok numbers. But not sure how that would affect balancing the injectors. I just need to alter one nozzle,,, but it took me 2 tries.
Hey, as far as flow balancing, we need to get a list of the extra nozzle restrictors we come up with.... I've got a .028 and a .027 extra.
Don McDonald
--- On Tue, 11/24/09, RobHickman(at)aol.com <RobHickman(at)aol.com> wrote:
| Quote: |
From: RobHickman(at)aol.com <RobHickman(at)aol.com>
Subject: RV-10 Takeoff Fuel Flow
To: rv10-list(at)matronics.com
Date: Tuesday, November 24, 2009, 5:00 PM
I am in the middle of injector tuning on my RV-10 and my neighbor is convinced that I do not have enough fuel flow on takeoff.
At sea level I am getting:
RPM 2700
MAN 27.9"
24.2 GPH
Rob Hickman
N402RH RV-10
| Quote: |
_blank rel=nofollow>www.aeroelectric.com
/" target=_blank rel=nofollow>www.buildersbooks.com
=_blank rel=nofollow>www.homebuilthelp.com
blank rel=nofollow>http://www.matronics.com/contribution
get=_blank rel=nofollow>http://www.matronics.com/Navigator?RV10-List
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[quote][b]
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gengrumpy(at)aol.com
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| Posted: Tue Nov 24, 2009 8:27 pm Post subject: RV-10 Takeoff Fuel Flow |
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Are you getting full rpm, MP and hood high EGT's?
Fuel flow is secondary to these indicators.
grumpy
N184JM
do not archive
On Nov 24, 2009, at 7:00 PM, RobHickman(at)aol.com (RobHickman(at)aol.com) wrote:
| Quote: | I am in the middle of injector tuning on my RV-10 and my neighbor is convinced that I do not have enough fuel flow on takeoff.
At sea level I am getting:
RPM 2700
MAN 27.9"
24.2 GPH
Rob Hickman
N402RH RV-10
| Quote: |
====================================
lectric.com
m">www.buildersbooks.com
ebuilthelp.com
w.matronics.com/contribution
====================================
tp://www.matronics.com/Navigator?RV10-List
====================================
nics.com
====================================
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= [quote][b]
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Kelly McMullen
Joined: 16 Apr 2008
Posts: 1188
Location: Sun Lakes AZ
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| Posted: Tue Nov 24, 2009 8:57 pm Post subject: RV-10 Takeoff Fuel Flow |
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I don't know what hood high EGTs means. Fuel flow should be such that
takeoff EGT is between 1200 and 1300 degrees. That should give you 200
degrees rich of sea level peak EGT. Anything over 1300 calls for more
fuel flow, less than 1200, less fuel flow.
On Tue, Nov 24, 2009 at 9:07 PM, Miller John <gengrumpy(at)aol.com> wrote:
| Quote: | Are you getting full rpm, MP and hood high EGT's?
Fuel flow is secondary to these indicators.
grumpy
N184JM
do not archive
On Nov 24, 2009, at 7:00 PM, RobHickman(at)aol.com wrote:
I am in the middle of injector tuning on my RV-10 and my neighbor is
convinced that I do not have enough fuel flow on takeoff.
At sea level I am getting:
RPM 2700
MAN 27.9"
24.2 GPH
Rob Hickman
N402RH RV-10
====================================
lectric.com
m">www.buildersbooks.com
ebuilthelp.com
w.matronics.com/contribution
====================================
tp://www.matronics.com/Navigator?RV10-List
====================================
nics.com
====================================
=
|
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Kelly McMullen
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jesse(at)saintaviation.co
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| Posted: Wed Nov 25, 2009 5:18 am Post subject: RV-10 Takeoff Fuel Flow |
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I agree that you don't want your EGT"s too high on takeoff. Within 200 degrees rich of peak is the danger zone as described by Gami. I don't think I'd want to see 1300 on takeoff. I'd rather not see over 1250, I think. Rob, I don't pay that much attention to the actual fuel flow, but I know I've seen anywhere from 24-26gph (some change obviously caused by the boost pump). What is your EGT on takeoff? That MAP does seem a little bit low. What is your elevation? I usually see in the 29"+ range. If you're only making 27.9", then I would expect a lower fuel flow.
do not archive
Jesse Saint
Saint Aviation, Inc.
jesse(at)saintaviation.com
Cell: 352-427-0285
Fax: 815-377-3694
On Nov 24, 2009, at 11:49 PM, Kelly McMullen wrote:
| Quote: |
I don't know what hood high EGTs means. Fuel flow should be such that
takeoff EGT is between 1200 and 1300 degrees. That should give you 200
degrees rich of sea level peak EGT. Anything over 1300 calls for more
fuel flow, less than 1200, less fuel flow.
On Tue, Nov 24, 2009 at 9:07 PM, Miller John <gengrumpy(at)aol.com> wrote:
> Are you getting full rpm, MP and hood high EGT's?
> Fuel flow is secondary to these indicators.
> grumpy
> N184JM
> do not archive
>
> On Nov 24, 2009, at 7:00 PM, RobHickman(at)aol.com wrote:
>
> I am in the middle of injector tuning on my RV-10 and my neighbor is
> convinced that I do not have enough fuel flow on takeoff.
>
> At sea level I am getting:
>
> RPM 2700
> MAN 27.9"
>
> 24.2 GPH
>
> Rob Hickman
> N402RH RV-10
>
> ====================================
> lectric.com
> m">www.buildersbooks.com
> ebuilthelp.com
> w.matronics.com/contribution
> ====================================
> tp://www.matronics.com/Navigator?RV10-List
> ====================================
> nics.com
> ====================================
>
>
> =
>
>
>
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pitts_pilot(at)bellsouth.
Guest
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| Posted: Wed Nov 25, 2009 5:53 am Post subject: RV-10 Takeoff Fuel Flow |
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I'd like to remind y'all that talking EGT numbers really isn't relevant
between aircraft due to differences in installation of the probes.
Distance from the exhaust flange and even the
placement on the circumference of the exhaust pipe will change the
EGT value. What would be relevant is the difference from peak, and ROP
or LOP, much like the GAMI quote from Jesse.
Linn
Jesse Saint wrote:
| Quote: |
<jesse(at)saintaviation.com>
I agree that you don't want your EGT"s too high on takeoff. Within
200 degrees rich of peak is the danger zone as described by Gami. I
don't think I'd want to see 1300 on takeoff. I'd rather not see over
1250, I think. Rob, I don't pay that much attention to the actual
fuel flow, but I know I've seen anywhere from 24-26gph (some change
obviously caused by the boost pump). What is your EGT on takeoff?
That MAP does seem a little bit low. What is your elevation? I
usually see in the 29"+ range. If you're only making 27.9", then I
would expect a lower fuel flow.
do not archive
Jesse Saint Saint Aviation, Inc. jesse(at)saintaviation.com Cell:
352-427-0285 Fax: 815-377-3694
On Nov 24, 2009, at 11:49 PM, Kelly McMullen wrote:
>
>
>
> I don't know what hood high EGTs means. Fuel flow should be such
> that takeoff EGT is between 1200 and 1300 degrees. That should give
> you 200 degrees rich of sea level peak EGT. Anything over 1300
> calls for more fuel flow, less than 1200, less fuel flow.
>
> On Tue, Nov 24, 2009 at 9:07 PM, Miller John <gengrumpy(at)aol.com>
> wrote:
>> Are you getting full rpm, MP and hood high EGT's? Fuel flow is
>> secondary to these indicators. grumpy N184JM do not archive
>>
>> On Nov 24, 2009, at 7:00 PM, RobHickman(at)aol.com wrote:
>>
>> I am in the middle of injector tuning on my RV-10 and my neighbor
>> is convinced that I do not have enough fuel flow on takeoff.
>>
>> At sea level I am getting:
>>
>> RPM 2700 MAN 27.9"
>>
>> 24.2 GPH
>>
>> Rob Hickman N402RH RV-10
>>
>> ==================================== lectric.com
>> m">www.buildersbooks.com ebuilthelp.com
>> w.matronics.com/contribution ====================================
>> tp://www.matronics.com/Navigator?RV10-List
>> ==================================== nics.com
>> ====================================
>>
>>
>> =
>>
>>
>>
>
>
>
>
|
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Kelly McMullen
Joined: 16 Apr 2008
Posts: 1188
Location: Sun Lakes AZ
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| Posted: Wed Nov 25, 2009 6:32 am Post subject: RV-10 Takeoff Fuel Flow |
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I agree with you in general, however, full power takeoff from sea
level is a consistent benchmark. With standard conditions a rule of
thumb that is a bit rich of what is needed is 1 gph per 10 hp.
As for EGT, I use UBG-16 on my 200hp Mooney, with the probes at the
recommended 1.5" from the exhaust flange. I find that 1300 as an upper
limit, with 1250 as a target works very well, keeps my CHT in the low
300s in all but the hottest weather. I first saw those numbers
recommended by John Deakin. He has since modified that to just use
whatever your sea level EGT at takeoff power for climb...which is okay
for certified planes, but you don't have manufacturer's baseline
recommendations for OBAM aircraft. While temps will vary between
cylinders depending on probe location and orientation, if you keep the
hottest EGT below 1300 and generally closer to 1250, it will be very
safe on a normally aspirated engine which will normally peak in the
high 1400s to low 1500s. As long as the probes are within about 4" of
the exhaust flange the values will be very much in that ballpark. I
use the recommended (by GAMI) fast response EGT probes rather than EIs
standard slow response probes. They cost about $10 more each.
On Wed, Nov 25, 2009 at 6:51 AM, Linn Walters <pitts_pilot(at)bellsouth.net> wrote:
| Quote: |
I'd like to remind y'all that talking EGT numbers really isn't relevant
between aircraft due to differences in installation of the probes. Distance
from the exhaust flange and even the
placement on the circumference of the exhaust pipe will change the
EGT value. What would be relevant is the difference from peak, and ROP or
LOP, much like the GAMI quote from Jesse.
Linn
Jesse Saint wrote:
>
>
> <jesse(at)saintaviation.com>
>
> I agree that you don't want your EGT"s too high on takeoff. Within
> 200 degrees rich of peak is the danger zone as described by Gami. I
> don't think I'd want to see 1300 on takeoff. I'd rather not see over
> 1250, I think. Rob, I don't pay that much attention to the actual
> fuel flow, but I know I've seen anywhere from 24-26gph (some change
> obviously caused by the boost pump). What is your EGT on takeoff?
> That MAP does seem a little bit low. What is your elevation? I
> usually see in the 29"+ range. If you're only making 27.9", then I
> would expect a lower fuel flow.
>
> do not archive
>
> Jesse Saint Saint Aviation, Inc. jesse(at)saintaviation.com Cell:
> 352-427-0285 Fax: 815-377-3694
>
> On Nov 24, 2009, at 11:49 PM, Kelly McMullen wrote:
>
>>
>>
>>
>> I don't know what hood high EGTs means. Fuel flow should be such
>> that takeoff EGT is between 1200 and 1300 degrees. That should give
>> you 200 degrees rich of sea level peak EGT. Anything over 1300
>> calls for more fuel flow, less than 1200, less fuel flow.
>>
>> On Tue, Nov 24, 2009 at 9:07 PM, Miller John <gengrumpy(at)aol.com>
>> wrote:
>>>
>>> Are you getting full rpm, MP and hood high EGT's? Fuel flow is
>>> secondary to these indicators. grumpy N184JM do not archive
>>>
>>> On Nov 24, 2009, at 7:00 PM, RobHickman(at)aol.com wrote:
>>>
>>> I am in the middle of injector tuning on my RV-10 and my neighbor
>>> is convinced that I do not have enough fuel flow on takeoff.
>>>
>>> At sea level I am getting:
>>>
>>> RPM 2700 MAN 27.9"
>>>
>>> 24.2 GPH
>>>
>>> Rob Hickman N402RH RV-10
>>>
>>> ==================================== lectric.com
>>> m">www.buildersbooks.com ebuilthelp.com w.matronics.com/contribution
>>> ====================================
>>> tp://www.matronics.com/Navigator?RV10-List
>>> ==================================== nics.com
>>> ====================================
>>>
>>>
>>> =
>>>
>>>
>>>
>>
>>
>>
>>
>
|
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http://www.matronics.com/Navigator?RV10-List |
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_________________
Kelly McMullen
A&P/IA, EAA Tech Counselor
KCHD |
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dlm46007(at)cox.net
Guest
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| Posted: Wed Nov 25, 2009 7:03 am Post subject: RV-10 Takeoff Fuel Flow |
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Concur. I flew a turbo normalized Cardinal RG using an IO360. The
recommended leaning procedures were by TIT EGT. Fuel flows in the injection
system were set higher than normally aspirated but EGTs were the leaning
byword. Since MP was limited to 28.5 showing on the gauges (even though it
was slightly higher in the system) the procedure was use 1200-1300s as a
range for takeoff and climb regardless of altitude. Target was 1400 for
cruise, although 1650 was manufacturer red line; engineering limit was
beyond that. For the 10 I use 1250 as a takeoff target about 1400 as a
cruise target. The only time EGTs go above 1420 is during the LOP process(
less than a minute). Once LOP is achieved, EGTS drop o the 1350-1400 range
and CHTs drop to the 280-320 range. Fuel flows drop to 9 gph and TAS is
150ktas.
--
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jesse(at)saintaviation.co
Guest
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| Posted: Wed Nov 25, 2009 8:22 am Post subject: RV-10 Takeoff Fuel Flow |
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For leaning and tuning the engine to know what size of injector is needed, the actual value isn't relevant, but rather the point at which it peaks. The numbers are still useful for the current discussion. There will be some variation based on location, age of sensor, etc., but the numbers for takeoff are still relevant.
Jesse Saint
Saint Aviation, Inc.
jesse(at)saintaviation.com
Cell: 352-427-0285
Fax: 815-377-3694
On Nov 25, 2009, at 8:51 AM, Linn Walters wrote:
| Quote: |
I'd like to remind y'all that talking EGT numbers really isn't relevant
between aircraft due to differences in installation of the probes. Distance from the exhaust flange and even the
placement on the circumference of the exhaust pipe will change the
EGT value. What would be relevant is the difference from peak, and ROP or LOP, much like the GAMI quote from Jesse.
Linn
|
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RobHickman(at)aol.com
Guest
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| Posted: Wed Nov 25, 2009 9:12 am Post subject: RV-10 Takeoff Fuel Flow |
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Last flight I got the following EGT's on takeoff
1305 1322 1289 1275 1277 1284
Is it possible to slightly increase the fuel flow on a RSA injector body without having to sent it in?
Rob Hickman
N402RH RV-10
In a message dated 11/24/2009 8:58:34 P.M. Pacific Standard Time, apilot2(at)gmail.com writes:
| Quote: | --> RV10-List message posted by: Kelly McMullen <apilot2(at)gmail.com>
I don't know what hood high EGTs means. Fuel flow should be such that
takeoff EGT is between 1200 and 1300 degrees. That should give you 200
degrees rich of sea level peak EGT. Anything over 1300 calls for more
fuel flow, less than 1200, less fuel flow.
On Tue, Nov 24, 2009 at 9:07 PM, Miller John <gengrumpy(at)aol.com> wrote:
| Quote: | Are you getting full rpm, MP and hood high EGT's?
Fuel flow is secondary to these indicators.
grumpy
N184JM
do not archive
On Nov 24, 2009, at 7:00 PM, RobHickman(at)aol.com wrote:
I am in the middle of injector tuning on my RV-10 and my neighbor is
convinced that I do not have enough fuel flow on takeoff.
At sea level I am getting:
RPM 2700
MAN 27.9"
24.2 GPH
Rob Hickman
N402RH RV-10
====================================
lectric.com
m">www.buildersbooks.com
ebuilthelp.com
w.matronics.com/contribution
====================================
tp://www.matronics.com/Navigator?RV10-List
====================================
nics.com
====================================
================================================nbsp; (And Get Some AWESOME FREE to find Gifts tric re b k you for p; -Matt Dralle, List ======================== the ties Day ================================================ - MATRONICS WEB FORUMS ==================================================
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[quote][b]
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partner14
Joined: 12 Jan 2008
Posts: 540
Location: Granbury Texas
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| Posted: Wed Nov 25, 2009 9:55 am Post subject: RV-10 Takeoff Fuel Flow |
|
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Rob, it would be nice to see how those numbers compare to the PEAK and LOP numbers. Are the #1 and #2 cylinders still the highest? What is the order of the cylinders as they relate to reaching peak.... in gph? What were the dimensions for the temp probe install. Is it possible that #1 and/or #2 were slightly closer to the cylinder heads?
Don McDonald
--- On Wed, 11/25/09, RobHickman(at)aol.com <RobHickman(at)aol.com> wrote:
| Quote: |
From: RobHickman(at)aol.com <RobHickman(at)aol.com>
Subject: Re: RV-10 Takeoff Fuel Flow
To: rv10-list(at)matronics.com
Date: Wednesday, November 25, 2009, 9:10 AM
Last flight I got the following EGT's on takeoff
1305 1322 1289 1275 1277 1284
Is it possible to slightly increase the fuel flow on a RSA injector body without having to sent it in?
Rob Hickman
N402RH RV-10
In a message dated 11/24/2009 8:58:34 P.M. Pacific Standard Time, apilot2(at)gmail.com writes:
| Quote: | --> RV10-List message posted by: Kelly McMullen <apilot2(at)gmail.com>
I don't know what hood high EGTs means. Fuel flow should be such that
takeoff EGT is between 1200 and 1300 degrees. That should give you 200
degrees rich of sea level peak EGT. Anything over 1300 calls for more
fuel flow, less than 1200, less fuel flow.
On Tue, Nov 24, 2009 at 9:07 PM, Miller John <gengrumpy(at)aol.com> wrote:
| Quote: | Are you getting full rpm, MP and hood high EGT's?
Fuel flow is secondary to these indicators.
grumpy
N184JM
do not archive
On Nov 24, 2009, at 7:00 PM, RobHickman(at)aol.com wrote:
I am in the middle of injector tuning on my RV-10 and my neighbor is
convinced that I do not have enough fuel flow on takeoff.
At sea level I am getting:
RPM 2700
MAN 27.9"
24.2 GPH
Rob Hickman
N402RH RV-10
====================================
lectric.com
m">www.buildersbooks.com
ebuilthelp.com
w.matronics.com/contribution
====================================
tp://www.matronics.com/Navigator?RV10-List
===========
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jcumins(at)jcis.net
Guest
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| Posted: Wed Nov 25, 2009 10:52 am Post subject: RV-10 Takeoff Fuel Flow |
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Rob
The fuel injection servo will manage the fuel flow based in what is set on the flow bench. Your egt for take off are perfect and you are getting about the right ff for take off. I agree with the 1 gph per 10 hp. This is a perfect ball park. The servo takes into consideration, mp, air density, temperature and everything else it might need. I truly do not think you have any issues.
I would also recommend that you use 1300 for climb egt lean as you climb to maintain 1300 you will keep that engine very happy for a very long time.
John G. Cumins
President
JC'S Interactive Systems
2499 B1 Martin Rd
Fairfield Ca 94533
707-425-7100
707-425-7576 Fax
Your Total Technology Solution Provider
From: owner-rv10-list-server(at)matronics.com [mailto:owner-rv10-list-server(at)matronics.com] On Behalf Of RobHickman(at)aol.com
Sent: Wednesday, November 25, 2009 9:11 AM
To: rv10-list(at)matronics.com
Subject: Re: RV-10 Takeoff Fuel Flow
Last flight I got the following EGT's on takeoff
1305
1322
1289
1275
1277
1284
Is it possible to slightly increase the fuel flow on a RSA injector body without having to sent it in?
Rob Hickman
N402RH RV-10
In a message dated 11/24/2009 8:58:34 P.M. Pacific Standard Time, apilot2(at)gmail.com writes:
| Quote: |
--> RV10-List message posted by: Kelly McMullen <apilot2(at)gmail.com>
I don't know what hood high EGTs means. Fuel flow should be such that
takeoff EGT is between 1200 and 1300 degrees. That should give you 200
degrees rich of sea level peak EGT. Anything over 1300 calls for more
fuel flow, less than 1200, less fuel flow.
On Tue, Nov 24, 2009 at 9:07 PM, Miller John <gengrumpy(at)aol.com> wrote:
> Are you getting full rpm, MP and hood high EGT's?
> Fuel flow is secondary to these indicators.
> grumpy
> N184JM
> do not archive
>
> On Nov 24, 2009, at 7:00 PM, RobHickman(at)aol.com wrote:
>
> I am in the middle of injector tuning on my RV-10 and my neighbor is
> convinced that I do not have enough fuel flow on takeoff.
>
> At sea level I am getting:
>
> RPM 2700
> MAN 27.9"
>
> 24.2 GPH
>
> Rob Hickman
> N402RH RV-10
>
> ===========
> lectric.com
> m">www.buildersbooks.com
> ebuilthelp.com
> w.matronics.com/contribution
> ===========
> tp://www.matronics.com/Navigator?RV10-List
> ===========
> nics.com
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>
>
> =======================nbsp; (And Get Some AWESOME FREE to find Gifts tric re b k you for p; -Matt Dralle, List ======================== the ties Day ======================= - MATRONICS WEB FORUMS
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0123456789012345678
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RobHickman(at)aol.com
Guest
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| Posted: Wed Nov 25, 2009 10:55 am Post subject: RV-10 Takeoff Fuel Flow |
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Test #1 2500 RPM 22" MP Fuel Flow EGT 1 EGT 2 EGT 3 EGT 4 EGT 5 EGT 6 13.0 1417 1420 1392 1374 1377 1397 12.8 1426 1422 1401 1377 1385 1405 12.6 1433 1422 1411 1386 1395 1412 12.4 1430 1410 1420 1397 1401 1419 12.3 1428 1403 1431 1405 1406 1414 12.2 1424 1396 1429 1408 1409 1413 12.1 1414 1389 1430 1413 1407 1409 11.9 1407 1379 1427 1417 1402 1402 11.8 1400 1374 1422 1420 1398 1397 11.5 1375 1345 1401 1420 1380 1374 11.3 1368 1340 1393 1417 1370 1366 11.2 1362 1332 1388 1410 1361 1358 Test #2 2500 RPM 22" MP Fuel Flow EGT 1 EGT 2 EGT 3 EGT 4 EGT 5 EGT 6 12.9 1427 1398 1400 1380 1382 1402 12.8 1432 1423 1407 1387 1388 1406 12.6 1434 1421 1419 1395 1396 1414 12.4 1437 1418 1422 1397 1402 1415 12.3 1424 1405 1427 1407 1402 1414 12.2 1414 1391 1429 1412 1406 1409 11.9 1403 1377 1427 1416 1398 1400 11.8 1396 1372 1424 1420 1393 1394 11.7 1390 1360 1416 1424 1391 1390 11.5 1380 1353 1405 1423 1380 1375 11.4 1373 1346 1396 1419 1371 1368 11.2 1361 1335 1384 1413 1360 1360
The plane currently has .028 injectors, I have the following injectors on order
Cylinder #4 .027
Cylinder #3 & #5 .0275
Rob Hickman
N402RH RV-10
In a message dated 11/25/2009 9:57:38 A.M. Pacific Standard Time, building_partner(at)yahoo.com writes:
| Quote: | Rob, it would be nice to see how those numbers compare to the PEAK and LOP numbers. Are the #1 and #2 cylinders still the highest? What is the order of the cylinders as they relate to reaching peak.... in gph? What were the dimensions for the temp probe install. Is it possible that #1 and/or #2 were slightly closer to the cylinder heads?
Don McDonald
--- On Wed, 11/25/09, RobHickman(at)aol.com <RobHickman(at)aol.com> wrote:
| Quote: |
From: RobHickman(at)aol.com <RobHickman(at)aol.com>
Subject: Re: RV-10 Takeoff Fuel Flow
To: rv10-list(at)matronics.com
Date: Wednesday, November 25, 2009, 9:10 AM
Last flight I got the following EGT's on takeoff
1305 1322 1289 1275 1277 1284
Is it possible to slightly increase the fuel flow on a RSA injector body without having to sent it in?
Rob Hickman
N402RH RV-10
In a message dated 11/24/2009 8:58:34 P.M. Pacific Standard Time, apilot2(at)gmail.com writes:
| Quote: | --> RV10-List message posted by: Kelly McMullen <apilot2(at)gmail.com>
I don't know what hood high EGTs means. Fuel flow should be such that
takeoff EGT is between 1200 and 1300 degrees. That should give you 200
degrees rich of sea level peak EGT. Anything over 1300 calls for more
fuel flow, less than 1200, less fuel flow.
On Tue, Nov 24, 2009 at 9:07 PM, Miller John <gengrumpy(at)aol.com> wrote:
| Quote: | Are you getting full rpm, MP and hood high EGT's?
Fuel flow is secondary to these indicators.
grumpy
N184JM
do not archive
On Nov 24, 2009, at 7:00 PM, RobHickman(at)aol.com wrote:
I am in the middle of injector tuning on my RV-10 and my neighbor is
convinced that I do not have enough fuel flow on takeoff.
At sea level I am getting:
RPM 2700
MAN 27.9"
24.2 GPH
Rob Hickman
N402RH RV-10
====================================
lectric.com
m">www.buildersbooks.com
ebuilthelp.com
w.matronics.com/contribution
====================================
tp://www.matronics.com/Navigator?RV10-List
===========
nics.com
====================================
=======================nbsp; (And Get Some AWESOME FREE to find Gifts tric re b k you for p; -Matt Dralle, List ======================== the ties Day ======================= - MATRONICS WEB FORUMS =========================
|
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| Quote: |
_blank rel=nofollow>www.aeroelectric.com
/" target=_blank rel=nofollow>www.buildersbooks.com
=_blank rel=nofollow>www.homebuilthelp.com
blank rel=nofollow>http://www.matronics.com/contribution
get=_blank rel=nofollow>http://www.matronics.com/Navigator?RV10-List
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jesse(at)saintaviation.co
Guest
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| Posted: Wed Nov 25, 2009 11:37 am Post subject: RV-10 Takeoff Fuel Flow |
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|
That conclusion looks good. In talking to Kyle at Airflow Performance, the most recent test I have done I started with .026" restrictors and am going down from there. He says that it better for lower fuel flows (under 10gph). I've done 2 engines starting with .028" and have been very happy with the results. You'll be very happy with your results after you're finished, although don't be surprised if you have to do another round. I've done 2 rounds of changes on one engine and 3 on the other that I finished testing to get to where everything was within .4 gph.
do not archive
Jesse Saint
Saint Aviation, Inc.
jesse(at)saintaviation.com (jesse(at)saintaviation.com)
Cell: 352-427-0285
Fax: 815-377-3694
On Nov 25, 2009, at 1:34 PM, RobHickman(at)aol.com (RobHickman(at)aol.com) wrote:
[quote] Test #1 2500 RPM 22" MP Fuel Flow EGT 1 EGT 2 EGT 3 EGT 4 EGT 5 EGT 6 13.0 1417 1420 1392 1374 1377 1397 12.8 1426 1422 1401 1377 1385 1405 12.6 1433 1422 1411 1386 1395 1412 12.4 1430 1410 1420 1397 1401 1419 12.3 1428 1403 1431 1405 1406 1414 12.2 1424 1396 1429 1408 1409 1413 12.1 1414 1389 1430 1413 1407 1409 11.9 1407 1379 1427 1417 1402 1402 11.8 1400 1374 1422 1420 1398 1397 11.5 1375 1345 1401 1420 1380 1374 11.3 1368 1340 1393 1417 1370 1366 11.2 1362 1332 1388 1410 1361 1358 Test #2 2500 RPM 22" MP Fuel Flow EGT 1 EGT 2 EGT 3 EGT 4 EGT 5 EGT 6 12.9 1427 1398 1400 1380 1382 1402 12.8 1432 1423 1407 1387 1388 1406 12.6 1434 1421 1419 1395 1396 1414 12.4 1437 1418 1422 1397 1402 1415 12.3 1424 1405 1427 1407 1402 1414 12.2 1414 1391 1429 1412 1406 1409 11.9 1403 1377 1427 1416 1398 1400 11.8 1396 1372 1424 1420 1393 1394 11.7 1390 1360 1416 1424 1391 1390 11.5 1380 1353 1405 1423 1380 1375 11.4 1373 1346 1396 1419 1371 1368 11.2 1361 1335 1384 1413 1360 1360
The plane currently has .028 injectors, I have the following injectors on order
Cylinder #4 .027
Cylinder #3 & #5 .0275
Rob Hickman
N402RH RV-10
In a message dated 11/25/2009 9:57:38 A.M. Pacific Standard Time, building_partner(at)yahoo.com (building_partner(at)yahoo.com) writes:
| Quote: | Rob, it would be nice to see how those numbers compare to the PEAK and LOP numbers. Are the #1 and #2 cylinders still the highest? What is the order of the cylinders as they relate to reaching peak.... in gph? What were the dimensions for the temp probe install. Is it possible that #1 and/or #2 were slightly closer to the cylinder heads?
Don McDonald
--- On Wed, 11/25/09, RobHickman(at)aol.com (RobHickman(at)aol.com) <RobHickman(at)aol.com (RobHickman(at)aol.com)> wrote:
| Quote: |
From: RobHickman(at)aol.com (RobHickman(at)aol.com) <RobHickman(at)aol.com (RobHickman(at)aol.com)>
Subject: Re: RV-10 Takeoff Fuel Flow
To: rv10-list(at)matronics.com (rv10-list(at)matronics.com)
Date: Wednesday, November 25, 2009, 9:10 AM
Last flight I got the following EGT's on takeoff
1305 1322 1289 1275 1277 1284
Is it possible to slightly increase the fuel flow on a RSA injector body without having to sent it in?
Rob Hickman
N402RH RV-10
In a message dated 11/24/2009 8:58:34 P.M. Pacific Standard Time, apilot2(at)gmail.com (apilot2(at)gmail.com) writes:
| Quote: | --> RV10-List message posted by: Kelly McMullen <apilot2(at)gmail.com (apilot2(at)gmail.com)>
I don't know what hood high EGTs means. Fuel flow should be such that
takeoff EGT is between 1200 and 1300 degrees. That should give you 200
degrees rich of sea level peak EGT. Anything over 1300 calls for more
fuel flow, less than 1200, less fuel flow.
On Tue, Nov 24, 2009 at 9:07 PM, Miller John <gengrumpy(at)aol.com (gengrumpy(at)aol.com)> wrote:
| Quote: | Are you getting full rpm, MP and hood high EGT's?
Fuel flow is secondary to these indicators.
grumpy
N184JM
do not archive
On Nov 24, 2009, at 7:00 PM, RobHickman(at)aol.com (RobHickman(at)aol.com) wrote:
I am in the middle of injector tuning on my RV-10 and my neighbor is
convinced that I do not have enough fuel flow on takeoff.
At sea level I am getting:
RPM 2700
MAN 27.9"
24.2 GPH
Rob Hickman
N402RH RV-10
====================================
lectric.com
m">www.buildersbooks.com
ebuilthelp.com
w.matronics.com/contribution
====================================
tp://www.matronics.com/Navigator?RV10-List
===========
nics.com
====================================
=======================nbsp; (And Get Some AWESOME FREE to find Gifts tric re b k you for p; -Matt Dralle, List ======================== the ties Day ======================= - MATRONICS WEB FORUMS =========================
|
|
| Quote: |
_blank rel=nofollow>www.aeroelectric.com
/" target=_blank rel=nofollow>www.buildersbooks.com
=_blank rel=nofollow>www.homebuilthelp.com
blank rel=nofollow>http://www.matronics.com/contribution
get=_blank rel=nofollow>http://www.matronics.com/Navigator?RV10-List
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Kellym
Joined: 10 Jan 2006
Posts: 1705
Location: Sun Lakes AZ
|
| Posted: Wed Nov 25, 2009 1:20 pm Post subject: RV-10 Takeoff Fuel Flow |
|
|
I believe your takeoff EGTs will come in line when you get the mixtures
balanced. You are close enough that I doubt you need to do anything with
the servo. In the meantime, using the boost pump until the first power
reduction may help.
RobHickman(at)aol.com wrote:
| Quote: | Test #1 2500 RPM 22" MP
Fuel Flow EGT 1 EGT 2 EGT 3 EGT 4 EGT 5 EGT 6
13.0 1417 1420 1392 1374 1377 1397
12.8 1426 1422 1401 1377 1385 1405
12.6 1433 1422 1411 1386 1395 1412
12.4 1430 1410 1420 1397 1401 1419
12.3 1428 1403 1431 1405 1406 1414
12.2 1424 1396 1429 1408 1409 1413
12.1 1414 1389 1430 1413 1407 1409
11.9 1407 1379 1427 1417 1402 1402
11.8 1400 1374 1422 1420 1398 1397
11.5 1375 1345 1401 1420 1380 1374
11.3 1368 1340 1393 1417 1370 1366
11.2 1362 1332 1388 1410 1361 1358
|
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A&P/IA, EAA Tech Counselor # 5286
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partner14
Joined: 12 Jan 2008
Posts: 540
Location: Granbury Texas
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| Posted: Wed Nov 25, 2009 3:10 pm Post subject: RV-10 Takeoff Fuel Flow |
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|
Maybe the issue with #4 is it's position on the spider.... my #4 was the same way... went to a .027, and it wasn't quite small enough, so ended up with a .0265... Now all really close.
Rob, I had 25.6 gph on takeoff today.
Don McDonald
--- On Wed, 11/25/09, RobHickman(at)aol.com <RobHickman(at)aol.com> wrote:
| Quote: |
From: RobHickman(at)aol.com <RobHickman(at)aol.com>
Subject: Re: RV-10 Takeoff Fuel Flow
To: rv10-list(at)matronics.com
Date: Wednesday, November 25, 2009, 10:34 AM
Test #1 2500 RPM 22" MP Fuel Flow EGT 1 EGT 2 EGT 3 EGT 4 EGT 5 EGT 6 13.0 1417 1420 1392 1374 1377 1397 12.8 1426 1422 1401 1377 1385 1405 12.6 1433 1422 1411 1386 1395 1412 12.4 1430 1410 1420 1397 1401 1419 12.3 1428 1403 1431 1405 1406 1414 12.2 1424 1396 1429 1408 1409 1413 12.1 1414 1389 1430 1413 1407 1409 11.9 1407 1379 1427 1417 1402 1402 11.8 1400 1374 1422 1420 1398 1397 11.5 1375 1345 1401 1420 1380 1374 11.3 1368 1340 1393 1417 1370 1366 11.2 1362 1332 1388 1410 1361 1358 Test #2 2500 RPM 22" MP Fuel Flow EGT 1 EGT 2 EGT 3 EGT 4 EGT 5 EGT 6 12.9 1427 1398 1400 1380 1382 1402 12.8 1432 1423 1407 1387 1388 1406 12.6 1434 1421 1419 1395 1396 1414 12.4 1437 1418 1422 1397 1402 1415 12.3 1424 1405 1427 1407 1402 1414 12.2 1414 1391 1429 1412 1406 1409 11.9 1403 1377 1427 1416 1398 1400 11.8 1396 1372 1424 1420 1393 1394 11.7 1390 1360 1416 1424 1391 1390 11.5 1380 1353 1405 1423 1380 1375 11.4 1373 1346 1396 1419 1371 1368 11.2 1361 1335 1384 1413 1360 1360
The plane currently has .028 injectors, I have the following injectors on order
Cylinder #4 .027
Cylinder #3 & #5 .0275
Rob Hickman
N402RH RV-10
In a message dated 11/25/2009 9:57:38 A.M. Pacific Standard Time, building_partner(at)yahoo.com writes:
| Quote: | Rob, it would be nice to see how those numbers compare to the PEAK and LOP numbers. Are the #1 and #2 cylinders still the highest? What is the order of the cylinders as they relate to reaching peak.... in gph? What were the dimensions for the temp probe install. Is it possible that #1 and/or #2 were slightly closer to the cylinder heads?
Don McDonald
--- On Wed, 11/25/09, RobHickman(at)aol.com <RobHickman(at)aol.com> wrote:
| Quote: |
From: RobHickman(at)aol.com <RobHickman(at)aol.com>
Subject: Re: RV-10 Takeoff Fuel Flow
To: rv10-list(at)matronics.com
Date: Wednesday, November 25, 2009, 9:10 AM
Last flight I got the following EGT's on takeoff
1305 1322 1289 1275 1277 1284
Is it possible to slightly increase the fuel flow on a RSA injector body without having to sent it in?
Rob Hickman
N402RH RV-10
In a message dated 11/24/2009 8:58:34 P.M. Pacific Standard Time, apilot2(at)gmail.com writes:
| Quote: | --> RV10-List message posted by: Kelly McMullen <apilot2(at)gmail.com>
I don't know what hood high EGTs means. Fuel flow should be such that
takeoff EGT is between 1200 and 1300 degrees. That should give you 200
degrees rich of sea level peak EGT. Anything over 1300 calls for more
fuel flow, less than 1200, less fuel flow.
On Tue, Nov 24, 2009 at 9:07 PM, Miller John <gengrumpy(at)aol.com> wrote:
| Quote: | Are you getting full rpm, MP and hood high EGT's?
Fuel flow is secondary to these indicators.
grumpy
N184JM
do not archive
On Nov 24, 2009, at 7:00 PM, RobHickman(at)aol.com wrote:
I am in the middle of injector tuning on my RV-10 and my neighbor is
convinced that I do not have enough fuel flow on takeoff.
At sea level I am getting:
RPM 2700
MAN 27.9"
24.2 GPH
Rob Hickman
N402RH RV-10
====================================
lectric.com
m">www.buildersbooks.com
ebuilthelp.com
w.matronics.com/contribution
====================================
tp://www.matronics.com/Navigator?RV10-List
===========
nics.com
====================================
=======================nbsp; (And Get Some AWESOME FREE to find Gifts tric re b k you for p; -Matt Dralle, List ======================== the ties Day ======================= - MATRONICS WEB FORUMS =========================
|
|
| Quote: |
_blank rel=nofollow>www.aeroelectric.com
/" target=_blank rel=nofollow>www.buildersbooks.com
=_blank rel=nofollow>www.homebuilthelp.com
blank rel=nofollow>http://www.matronics.com/contribution
get=_blank rel=nofollow>http://www.matronics.com/Navigator?RV10-List
=nofollow>http://forums.matronics.com
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| Quote: |
_blank rel=nofollow>www.aeroelectric.com
/" target=_blank rel=nofollow>www.buildersbooks.com
=_blank rel=nofollow>www.homebuilthelp.com
blank rel=nofollow>http://www.matronics.com/contribution
get=_blank rel=nofollow>http://www.matronics.com/Navigator?RV10-List
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[quote][b]
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