---------------------------------------------------------- RV10-List Digest Archive --- Total Messages Posted Fri 12/18/15: 5 ---------------------------------------------------------- Today's Message Index: ---------------------- 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 _____________________________________ Time: 02:43:21 PM PST US From: Matt Dralle Subject: RV10-List: 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 _____________________________________ Time: 03:04:51 PM PST US From: Justin Jones Subject: Re: RV10-List: 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 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 _____________________________________ Time: 03:14:20 PM PST US Subject: RV10-List: Re: Lycoming O-360 Fuel Flow Rate From: "Bob Turner" 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 _____________________________________ Time: 04:36:20 PM PST US Subject: RV10-List: Re: Lycoming O-360 Fuel Flow Rate From: "bill.peyton" 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 _____________________________________ Time: 04:54:19 PM PST US Subject: RV10-List: Andair PX 375 TC Required From: "maca2790" 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 ------------------------------------------------------------------------------------- Other Matronics Email List Services ------------------------------------------------------------------------------------- Post A New Message rv10-list@matronics.com UN/SUBSCRIBE http://www.matronics.com/subscription List FAQ http://www.matronics.com/FAQ/RV10-List.htm Web Forum Interface To Lists http://forums.matronics.com Matronics List Wiki http://wiki.matronics.com Full Archive Search Engine http://www.matronics.com/search 7-Day List Browse http://www.matronics.com/browse/rv10-list Browse Digests http://www.matronics.com/digest/rv10-list Browse Other Lists http://www.matronics.com/browse Live Online Chat! http://www.matronics.com/chat Archive Downloading http://www.matronics.com/archives Photo Share http://www.matronics.com/photoshare Other Email Lists http://www.matronics.com/emaillists Contributions http://www.matronics.com/contribution ------------------------------------------------------------------------------------- These Email List Services are sponsored solely by Matronics and through the generous Contributions of its members.