Today's Message Index:
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1. 02:43 PM - Lycoming O-360 Fuel Flow Rate (Matt Dralle)
2. 03:04 PM - Re: Lycoming O-360 Fuel Flow Rate (Justin Jones)
3. 03:14 PM - Re: Lycoming O-360 Fuel Flow Rate (Bob Turner)
4. 04:36 PM - Re: Lycoming O-360 Fuel Flow Rate (bill.peyton)
5. 04:54 PM - Andair PX 375 TC Required (maca2790)
Message 1
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| Subject: | Lycoming O-360 Fuel Flow Rate |
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,
This sounds a bit low to me but is in the realm of possibilities. If you don't
have any symptoms of low power output from the engine, I'd top the tanks off,
fly overhead for 1 or 2 hours, land, refill, and verify the average fuel burn
you saw on the instrument is the same as that was actually burned.
Justin
> On Dec 18, 2015, at 16:38, 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 3
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| Subject: | Re: Lycoming O-360 Fuel Flow Rate |
Hi Matt,
Looks low to me too. Are you sure of the FF calibration?
I forget what engine you have, but a rule of thumb is full power/full rich FF should
be about 0.95*HP/10.
So if your engine makes 160HP at 2700 rpm, and you had 2400 rpm, then roughly you
had 24/27 * 160 = 142 HP, times .95/10 = 13.5 gal/hr. So 9 looks low.
Bob
--------
Bob Turner
RV-10 QB
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=451038#451038
Message 4
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| Subject: | Re: Lycoming O-360 Fuel Flow Rate |
Matt,
I used to see 14gph on my O360 in climb...
--------
Bill
WA0SYV
Aviation Partners, LLC
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=451041#451041
Message 5
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| Subject: | 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
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