Today's Message Index:
----------------------
0. 02:05 PM - Auction For P113 eMag To Support Matronics List Fund Raiser (Matt Dralle)
1. 04:32 AM - Re: Lycoming O-360 Fuel Flow Rate (Jesse Saint)
2. 05:57 AM - Re: Lycoming O-360 Fuel Flow Rate (Werner Schneider)
3. 08:34 AM - Re: Lycoming O-360 Fuel Flow Rate (Danny Riggs)
4. 09:06 AM - Re: Andair PX 375 TC Required (gulf)
5. 12:22 PM - Re: Andair PX 375 TC Required (maca2790)
6. 12:50 PM - Re: Lycoming O-360 Fuel Flow Rate (Matt Dralle)
7. 07:41 PM - 2015 List of Contributors (Matt Dralle)
Message 0
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| Subject: | Auction For P113 eMag To Support Matronics List Fund Raiser |
Dear Listers,
Bob Nuckolls of the AeroElectric fame has generously put a new eMag P113 electronic
4-cylinder mag up for sale on EBay. Bob has pledged to donate all of the
proceeds from this auction in support of this year's Matronics Fund Raiser.
If you are in the market for one of these great electronic ignitions (I have two
eMags on my RV-8 and love them), please bid on this one!
http://www.ebay.com/itm/151920582478
Thank you in advance!
Matt Dralle
Matronics Email List Administrator
Message 1
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| Subject: | Re: Lycoming O-360 Fuel Flow Rate |
You should see about .9 GPH per 10 horsepower, so if you have a 180HP engine, you
should see around 16-17 GPH on takeoff. 9 GPH at 2350-2400 rpm sounds way too
low, especially if manifold pressure is high.
Jesse Saint
Saint Aviation, Inc.
352-427-0285
jesse@saintaviation.com
Sent from my iPad
> On Dec 18, 2015, at 5:38 PM, Matt Dralle <dralle@matronics.com> wrote:
>
>
>
> I'm still chasing down this weird problem with low fuel flow rates on the RV-6.
I've replaced the mechanical fuel pump and got a rebuilt 4-5 carburetor, both
of which were well over do for replacement/overhaul anyway. I haven't put
the cowling back on yet, but I did a static run up to about 2350-2400 and am
seeing about 9gph, which seems low to me?
>
> I pulled the fuel line off the carburetor and turned the electric fuel pump on
and saw about 21 GPH flow. Is that considered "normal" or too low?
>
> Thanks for the feedback,
>
> Matt
>
> -
> Matt Dralle
>
> RV-8 #82880 N998RV "Ruby Vixen"
> http://www.mattsrv8.com - Matt's Complete RV-8 Construction Log
> http://www.mattsrv8.com/Mishap - Landing Mishap Rebuild Log
> http://www.youtube.com/MattsRV8 - Matt's RV-8 HDTV YouTube Channel
> Status: 210+ Hours TTSN - Version 2.0 Now Flying!
>
> RV-6 #20916 N360EM "The Flyer"
> http://www.mattsrv6.com - Matt's RV-6 Revitalization Log
> Status: 300+ Hours - Full Flyer Mode!
>
> Matt's Livermore Airport Live ATC Stream!
> Check out the live ATC stream directly from my hangar at the Livermore
> Airport. Includes both Tower and Ground transmissions. Archives too!
> For entertainment purposes only. http://klvk.matronics.com
>
>
>
>
>
Message 2
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| Subject: | Re: Lycoming O-360 Fuel Flow Rate |
Matt,
attached an engine chart for several O-360 types, so 9 gal/hr seems to
be a bit on the leaner side, are you sure your carburetor is correctly
set from a mixture point of view? It would give you roughly 120 hp
according the charts.
Fuel flow with 21 gals/hr are just ok, according the FAR's the max flow
you have to supply is 125% of what the engine can surge at max power,
according the charts about 16.5 gal/hr with 2700 and 180hp *1.25 =
20.625 gal/h so just about...
But I would rather crosscheck your fuel flow meter first, get a bucket
unscrew the fuel line and time 2-3 times what it takes to fill the
bucket with 1 gal and compare to your FF meter.
Cheers Werner
On 18.12.2015 23:38, Matt Dralle wrote:
>
>
> I'm still chasing down this weird problem with low fuel flow rates on the RV-6.
I've replaced the mechanical fuel pump and got a rebuilt 4-5 carburetor, both
of which were well over do for replacement/overhaul anyway. I haven't put
the cowling back on yet, but I did a static run up to about 2350-2400 and am
seeing about 9gph, which seems low to me?
>
> I pulled the fuel line off the carburetor and turned the electric fuel pump on
and saw about 21 GPH flow. Is that considered "normal" or too low?
>
>
Message 3
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| Subject: | Re: Lycoming O-360 Fuel Flow Rate |
Great set of charts! Anybody have that for a IO-540???
________________________________________
From: owner-rv10-list-server@matronics.com <owner-rv10-list-server@matronics.com>
on behalf of Werner Schneider <glastar@gmx.net>
Sent: Saturday, December 19, 2015 7:48:53 AM
Subject: Re: RV10-List: Lycoming O-360 Fuel Flow Rate
Matt,
attached an engine chart for several O-360 types, so 9 gal/hr seems to
be a bit on the leaner side, are you sure your carburetor is correctly
set from a mixture point of view? It would give you roughly 120 hp
according the charts.
Fuel flow with 21 gals/hr are just ok, according the FAR's the max flow
you have to supply is 125% of what the engine can surge at max power,
according the charts about 16.5 gal/hr with 2700 and 180hp *1.25
20.625 gal/h so just about...
But I would rather crosscheck your fuel flow meter first, get a bucket
unscrew the fuel line and time 2-3 times what it takes to fill the
bucket with 1 gal and compare to your FF meter.
Cheers Werner
On 18.12.2015 23:38, Matt Dralle wrote:
>
>
> I'm still chasing down this weird problem with low fuel flow rates on the RV-6.
I've replaced the mechanical fuel pump and got a rebuilt 4-5 carburetor, both
of which were well over do for replacement/overhaul anyway. I haven't put
the cowling back on yet, but I did a static run up to about 2350-2400 and am
seeing about 9gph, which seems low to me?
>
> I pulled the fuel line off the carburetor and turned the electric fuel pump on
and saw about 21 GPH flow. Is that considered "normal" or too low?
>
>
Message 4
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| Subject: | Andair PX 375 TC Required |
I have one I mounted a while back - about middle of build - but just bought
ranch so will be well into summer before I need. See attached
-----Original Message-----
From: owner-rv10-list-server@matronics.com
[mailto:owner-rv10-list-server@matronics.com] On Behalf Of maca2790
Sent: Friday, December 18, 2015 4:48 PM
Subject: RV10-List: Andair PX 375 TC Required
Hi all,
I have to return my Andair 375 Fuel pump for service which will take 4 weeks
or more. New ones not available right now due to the Silly Season.
Would someone have a PX 357 TC not yet installed I could buy, Or make use of
and I will replace with a new one when the Factory does a production run in
4 week?
Thanks
John MacCallum
RV 10 41016
4.7 hrs :)
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=451043#451043
Message 5
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| Subject: | Re: Andair PX 375 TC Required |
It would be great if you could send me your pump. I can get Andair to send you
a new one direct when their Factory Starts up in January.
I'll email you privately.
Thanks
John MacCallum
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=451068#451068
Message 6
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| Subject: | Re: Lycoming O-360 Fuel Flow Rate |
Thank you to everyone that responded!! There were some great comments that got
me going down the right path.
Last night I got the cowling back on and took the RV-6 out on the runway and ran
it up to full power with the intent of carefully watching the flow rate and
aborting the take off if the flow wasn't sufficiently high enough. I'm happy
to report that the flow rate climbed nicely up though the teens as my takeoff
roll progressed. I lifted off around 15-16 gph and decided to take it around
the pattern. As I climbed through the crosswind to downwind turn I noted that
the flow was in the 18.5gph range, RPM was at 2700, and EGTs were low 1300's.
After a few more loops around the pattern everything seemed to be working as
expected. I took it out of the pattern and dialed it into my normal cruse configuration
which is typically 75% power at 2250 RPM and leaned to about 1425
on the hottest EGT. Everything sounded and felt fine. Flow was right at 9.5
GPH per usual.
The only weird thing I noticed was at about 1700 RPM. When I turn from Downwind
to Base and go from idle to about 2000 RPM like I usually do, right about 1700
RPM the engine kind of sags and then picks back up. It is very repeatable.
Strangely there is no sag on the ground after a touch and go when I push the
throttle in fast going from idle to full power anymore like there was with the
old carb.
Does anyone have any idea what that sag at 1700 is? Is there a nurd knob on the
carb for this specifically?
Thanks again for the great feedback!
Matt Dralle
At 02:38 PM 12/18/2015 Friday, Matt Dralle wrote:
>I'm still chasing down this weird problem with low fuel flow rates on the RV-6.
I've replaced the mechanical fuel pump and got a rebuilt 4-5 carburetor, both
of which were well over do for replacement/overhaul anyway. I haven't put
the cowling back on yet, but I did a static run up to about 2350-2400 and am seeing
about 9gph, which seems low to me?
>
>I pulled the fuel line off the carburetor and turned the electric fuel pump on
and saw about 21 GPH flow. Is that considered "normal" or too low?
>
>Thanks for the feedback,
>
>Matt
-
Matt Dralle
RV-8 #82880 N998RV "Ruby Vixen"
http://www.mattsrv8.com - Matt's Complete RV-8 Construction Log
http://www.mattsrv8.com/Mishap - Landing Mishap Rebuild Log
http://www.youtube.com/MattsRV8 - Matt's RV-8 HDTV YouTube Channel
Status: 210+ Hours TTSN - Version 2.0 Now Flying!
RV-6 #20916 N360EM "The Flyer"
http://www.mattsrv6.com - Matt's RV-6 Revitalization Log
Status: 300+ Hours - Full Flyer Mode!
Matt's Livermore Airport Live ATC Stream!
Check out the live ATC stream directly from my hangar at the Livermore
Airport. Includes both Tower and Ground transmissions. Archives too!
For entertainment purposes only. http://klvk.matronics.com
Message 7
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| Subject: | 2015 List of Contributors |
Dear Listers,
The 2015 Matronics Email List and Forum Fund Raiser officially ended a couple of
weeks ago and it's time that I published this year's List of Contributors.
It is the people on this list that directly make these Email Lists and Forums
possible! Their generous Contributions keep the servers and Internet connection
up and running!
You can still show your support this year and pick up a great gift at the same
time. The Contribution Web Site is fast, easy, and secure:
http://www.matronics.com/contribution
Or, by dropping a personal check in the mail to:
Matt Dralle / Matronics
581 Jeannie Way
Livermore CA 94550
I also want to thank Andy, Bob, and George for their generous support through the
supply of many great gifts this year!! These guys have some excellent products
and I encourage you to visit their respective web sites:
Andy Gold - The Builder's Bookstore - http://www.buildersbooks.com
Bob Nucklolls - AeroElectric - http://www.aeroelectric.com
George Race - Race Consulting - http://www.mrrace.com
And finally, I'm proud to present The 2015 Fund Raiser List of Contributors:
http://www.matronics.com/loc/2015.html
Thanks again to everyone that made a Contribution this year!!
Matt Dralle
Matronics Email List & Forum Administrator
Other Matronics Email List Services
These Email List Services are sponsored solely by Matronics and through the generous Contributions of its members.
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