---------------------------------------------------------- Pietenpol-List Digest Archive --- Total Messages Posted Tue 10/06/15: 10 ---------------------------------------------------------- Today's Message Index: ---------------------- 1. 04:17 AM - Re: Corvair Fuel Burn (tkreiner) 2. 08:02 AM - Re: Corvair Fuel Burn (Harvey Plummer) 3. 01:15 PM - Re: Re: Corvair Fuel Burn (Kip Gardner) 4. 01:15 PM - Re: Re: Corvair Fuel Burn (Kip Gardner) 5. 01:30 PM - Re: Re: Corvair Fuel Burn (Scott Knowlton) 6. 02:44 PM - Re: Re: Corvair Fuel Burn (Robert Gow) 7. 02:58 PM - Re: Re: Corvair Fuel Burn (Kip Gardner) 8. 05:05 PM - Re: Re: Corvair Fuel Burn (Gary Boothe) 9. 05:18 PM - Re: Re: Corvair Fuel Burn (G Hansen) 10. 05:21 PM - Re: Re: Corvair Fuel Burn (Robert Gow) ________________________________ Message 1 _____________________________________ Time: 04:17:32 AM PST US Subject: Pietenpol-List: Re: Corvair Fuel Burn From: "tkreiner" Uh... Make that 0.5 gal / Hp-hr... Thanks for pointing out the error in my units, Mike! -------- Tom Kreiner Read this topic online here: http://forums.matronics.com/viewtopic.php?p=447715#447715 ________________________________ Message 2 _____________________________________ Time: 08:02:05 AM PST US Subject: Pietenpol-List: Re: Corvair Fuel Burn From: "Harvey Plummer" Thanks for the info guys. I am planning to put my tank in front of Fuselage and want to calculate how many gallons I will need. -------- Harv, 485PB Read this topic online here: http://forums.matronics.com/viewtopic.php?p=447725#447725 ________________________________ Message 3 _____________________________________ Time: 01:15:13 PM PST US Subject: Re: Pietenpol-List: Re: Corvair Fuel Burn From: Kip Gardner Um, this still doesn't make sense to me: 0.5 gal/hp/hr x 100hp = 50gal/hr? Am I missing something? I would think the burn should the be 0.05gal/hp/hr to get 5gph @ 100hp. Kip Gardner On Oct 6, 2015, at 7:16 AM, tkreiner wrote: > > Uh... > > Make that 0.5 gal / Hp-hr... > > Thanks for pointing out the error in my units, Mike! > > -------- > Tom Kreiner > > > > > Read this topic online here: > > http://forums.matronics.com/viewtopic.php?p=447715#447715 > > > > > > > > > > ________________________________ Message 4 _____________________________________ Time: 01:15:18 PM PST US Subject: Re: Pietenpol-List: Re: Corvair Fuel Burn From: Kip Gardner Um, this still doesn't make sense to me: 0.5 gal/hp/hr x 100hp = 50gal/hr? Am I missing something? I would think the burn should the be 0.05gal/hp/hr to get 5gph @ 100hp. Kip Gardner On Oct 6, 2015, at 7:16 AM, tkreiner wrote: > > Uh... > > Make that 0.5 gal / Hp-hr... > > Thanks for pointing out the error in my units, Mike! > > -------- > Tom Kreiner > > > > > Read this topic online here: > > http://forums.matronics.com/viewtopic.php?p=447715#447715 > > > > > > > > > > ________________________________ Message 5 _____________________________________ Time: 01:30:34 PM PST US Subject: Re: Pietenpol-List: Re: Corvair Fuel Burn From: Scott Knowlton I believe the rule of thumb for thermal efficiency of aircraft engines fuel and horsepower is .5lb/hp/hr which in the 100hp engine equals just over 8GPH (50 pounds/6 pounds per gallon= 8.1). which makes sense since it only generates 100HP at full throttle at sea level and we would rarely operate in that window. Usually we are powered to 75% at cruise which would give the more reasonable 5GPH. But don't quote me on any of the above. Scott Sent from my iPhone > On Oct 6, 2015, at 4:17 PM, "Kip Gardner" wrote: > > > Um, this still doesn't make sense to me: > > 0.5 gal/hp/hr x 100hp = 50gal/hr? Am I missing something? I would think the burn should the be 0.05gal/hp/hr to get 5gph @ 100hp. > > Kip Gardner > >> On Oct 6, 2015, at 7:16 AM, tkreiner wrote: >> >> >> Uh... >> >> Make that 0.5 gal / Hp-hr... >> >> Thanks for pointing out the error in my units, Mike! >> >> -------- >> Tom Kreiner >> >> >> >> >> Read this topic online here: >> >> http://forums.matronics.com/viewtopic.php?p=447715#447715 > > > > > > ________________________________ Message 6 _____________________________________ Time: 02:44:45 PM PST US From: Robert Gow Subject: Re: Pietenpol-List: Re: Corvair Fuel Burn perhaps 0.5 lbs per hour. that is a typical specific consumption for a piston engine. Original Message From: Kip Gardner Sent: Tuesday, October 6, 2015 16:15 Reply To: pietenpol-list@matronics.com Subject: Re: Pietenpol-List: Re: Corvair Fuel Burn Um, this still doesn't make sense to me: 0.5 gal/hp/hr x 100hp = 50gal/hr? Am I missing something? I would think the burn should the be 0.05gal/hp/hr to get 5gph @ 100hp. Kip Gardner On Oct 6, 2015, at 7:16 AM, tkreiner wrote: > > Uh... > > Make that 0.5 gal / Hp-hr... > > Thanks for pointing out the error in my units, Mike! > > -------- > Tom Kreiner > > > Read this topic online here: > > http://forums.matronics.com/viewtopic.php?p=447715#447715 > > ________________________________ Message 7 _____________________________________ Time: 02:58:46 PM PST US Subject: Re: Pietenpol-List: Re: Corvair Fuel Burn From: Kip Gardner OK, that makes sense. Thanks. On Oct 6, 2015, at 5:44 PM, Robert Gow wrote: > > perhaps 0.5 lbs per hour. that is a typical specific consumption for a piston engine. > > Original Message > From: Kip Gardner > Sent: Tuesday, October 6, 2015 16:15 > To: pietenpol-list@matronics.com > Reply To: pietenpol-list@matronics.com > Subject: Re: Pietenpol-List: Re: Corvair Fuel Burn > > > > Um, this still doesn't make sense to me: > > 0.5 gal/hp/hr x 100hp = 50gal/hr? Am I missing something? I would think the burn should the be 0.05gal/hp/hr to get 5gph @ 100hp. > > Kip Gardner > > On Oct 6, 2015, at 7:16 AM, tkreiner wrote: > >> >> Uh... >> >> Make that 0.5 gal / Hp-hr... >> >> Thanks for pointing out the error in my units, Mike! >> >> -------- >> Tom Kreiner >> >> >> >> >> Read this topic online here: >> >> http://forums.matronics.com/viewtopic.php?p=447715#447715 >> >> >> >> >> >> >> >> >> >> > > > > > > > > > > > ________________________________ Message 8 _____________________________________ Time: 05:05:59 PM PST US From: Gary Boothe Subject: Re: Pietenpol-List: Re: Corvair Fuel Burn No need to hypothesize. I get right near 5gph....cruise at 2700. Admittedly, I have my timing backed off just a bit from the 32 deg max, so may be getting a bit under 100hp. Gary Sent from my iPhone > On Oct 6, 2015, at 2:57 PM, Kip Gardner wrote: > > > OK, that makes sense. Thanks. > >> On Oct 6, 2015, at 5:44 PM, Robert Gow wrote: >> >> >> perhaps 0.5 lbs per hour. that is a typical specific consumption for a piston engine. >> >> Original Message >> From: Kip Gardner >> Sent: Tuesday, October 6, 2015 16:15 >> To: pietenpol-list@matronics.com >> Reply To: pietenpol-list@matronics.com >> Subject: Re: Pietenpol-List: Re: Corvair Fuel Burn >> >> >> >> Um, this still doesn't make sense to me: >> >> 0.5 gal/hp/hr x 100hp = 50gal/hr? Am I missing something? I would think the burn should the be 0.05gal/hp/hr to get 5gph @ 100hp. >> >> Kip Gardner >> >>> On Oct 6, 2015, at 7:16 AM, tkreiner wrote: >>> >>> >>> Uh... >>> >>> Make that 0.5 gal / Hp-hr... >>> >>> Thanks for pointing out the error in my units, Mike! >>> >>> -------- >>> Tom Kreiner >>> >>> >>> >>> >>> Read this topic online here: >>> >>> http://forums.matronics.com/viewtopic.php?p=447715#447715 > > > > > > ________________________________ Message 9 _____________________________________ Time: 05:18:08 PM PST US From: "G Hansen" Subject: Re: Pietenpol-List: Re: Corvair Fuel Burn Specific fuel consumption, as I remember it from Tech days so long ago, is measured in pounds per brake horsepower per hour. As mentioned by others, it usually is about 0.5 lbs./bhp/hr. Graham Hansen -----Original Message----- From: Robert Gow Sent: Tuesday, October 06, 2015 3:44 PM Subject: Re: Pietenpol-List: Re: Corvair Fuel Burn perhaps 0.5 lbs per hour. that is a typical specific consumption for a piston engine. Original Message From: Kip Gardner Sent: Tuesday, October 6, 2015 16:15 Reply To: pietenpol-list@matronics.com Subject: Re: Pietenpol-List: Re: Corvair Fuel Burn Um, this still doesn't make sense to me: 0.5 gal/hp/hr x 100hp = 50gal/hr? Am I missing something? I would think the burn should the be 0.05gal/hp/hr to get 5gph @ 100hp. Kip Gardner On Oct 6, 2015, at 7:16 AM, tkreiner wrote: > > Uh... > > Make that 0.5 gal / Hp-hr... > > Thanks for pointing out the error in my units, Mike! > > -------- > Tom Kreiner > > > Read this topic online here: > > http://forums.matronics.com/viewtopic.php?p=447715#447715 > > ----- No virus found in this message. Checked by AVG - www.avg.com ________________________________ Message 10 ____________________________________ Time: 05:21:59 PM PST US From: Robert Gow Subject: Re: Pietenpol-List: Re: Corvair Fuel Burn yes forgot to include the "per hp" term. Original Message From: G Hansen Sent: Tuesday, October 6, 2015 20:18 Reply To: pietenpol-list@matronics.com Subject: Re: Pietenpol-List: Re: Corvair Fuel Burn Specific fuel consumption, as I remember it from Tech days so long ago, is measured in pounds per brake horsepower per hour. As mentioned by others, it usually is about 0.5 lbs./bhp/hr. Graham Hansen -----Original Message----- From: Robert Gow Sent: Tuesday, October 06, 2015 3:44 PM Subject: Re: Pietenpol-List: Re: Corvair Fuel Burn perhaps 0.5 lbs per hour. that is a typical specific consumption for a piston engine. Original Message From: Kip Gardner Sent: Tuesday, October 6, 2015 16:15 Reply To: pietenpol-list@matronics.com Subject: Re: Pietenpol-List: Re: Corvair Fuel Burn Um, this still doesn't make sense to me: 0.5 gal/hp/hr x 100hp = 50gal/hr? Am I missing something? I would think the burn should the be 0.05gal/hp/hr to get 5gph @ 100hp. Kip Gardner On Oct 6, 2015, at 7:16 AM, tkreiner wrote: > > Uh... > > Make that 0.5 gal / Hp-hr... > > Thanks for pointing out the error in my units, Mike! > > -------- > Tom Kreiner > > > Read this topic online here: > > http://forums.matronics.com/viewtopic.php?p=447715#447715 > > ----- No virus found in this message. 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