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02-20-2017, 08:04 AM
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Join Date: Oct 2006
Location: Garden City, Tx
Posts: 5,147
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I did a climb to 17,500 yesterday to check out my oxygen system after working on the regulator (yes, with a fingertip blood sat checker), I didn't specifically watch the time-to-climb but I was up and back down again in 36 minutes. My home strip is 2700' and I climbed at 1000/min until 10,000', then climbed at 95 knots after that, I was still climbing at 500/min when the autopilot leveled at 17,500.
IO360, Whirlwind prop.
__________________
Greg Niehues - SEL, IFR, Repairman Cert.
Garden City, TX VAF 2020 dues paid 
N16GN flying 700 hrs and counting; IO360, SDS, WWRV200, Dynon HDX, 430W
Built an off-plan RV9A with too much fuel and too much HP. Should drop dead any minute now.
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02-21-2017, 10:09 AM
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Join Date: Apr 2011
Location: Cincinnati, OH
Posts: 2,791
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those are good numbers.
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Steve Melton
Cincinnati, OH
RV-9A, Tip-up, Superior O-320, roller lifters, 160HP, WW 200RV, dual impulse slick mags, oil pressure = 65 psi, EGT = 1300F, flight hours = 800+ for all
Simplicity is the art in design.
My Artwork is freely given and published and cannot be patented.
www.rvplasticparts.com
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02-21-2017, 06:25 PM
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Join Date: Jan 2016
Location: Southwest
Posts: 1,120
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Quote:
Originally Posted by Steve Melton
those are good numbers.
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Steve, your configuration is going to be closer to mine. What do you plan for cruise and what climb rate and speed do you use for everyday missions. Lastly any high altitude speeds and fuel flow?
__________________
John S
WARNING! Information presented in this post is my opinion. All users of info have sole responsibility for determining accuracy or suitability for their use.
Dues paid 2020, worth every penny
RV9A- Status:
Tail 98% done
Wings 98% done
Fuselage Kit 98% done
Finishing Kit 35% canopy done for now
Electrical 5% in work
Firewall Forward 5% in work
www.pilotjohnsrv9.blogspot.com
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02-22-2017, 07:12 PM
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Join Date: Apr 2011
Location: Cincinnati, OH
Posts: 2,791
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Quote:
Originally Posted by PilotjohnS
Steve, your configuration is going to be closer to mine. What do you plan for cruise and what climb rate and speed do you use for everyday missions. Lastly any high altitude speeds and fuel flow?
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I have become slower after painting or I'm loafing the engine more or maybe it's the dreaded paint weight. I plan at 140 kts cruise, normal climb =700 fpm. Fast climb on takeoff at 90kt >2000 fpm when OAT < 3C. On the last flight from Kansas to Cincy at 11.5K my TAS was 139 at 2200 RPM burning 5.7 gph, OAT =1C. On that flight I had a great tailwind (like 50 kts) and burned 21 gal for 600 nm.
__________________
Steve Melton
Cincinnati, OH
RV-9A, Tip-up, Superior O-320, roller lifters, 160HP, WW 200RV, dual impulse slick mags, oil pressure = 65 psi, EGT = 1300F, flight hours = 800+ for all
Simplicity is the art in design.
My Artwork is freely given and published and cannot be patented.
www.rvplasticparts.com
Last edited by Steve Melton : 02-22-2017 at 07:20 PM.
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02-22-2017, 07:24 PM
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Join Date: Jan 2005
Location: SC
Posts: 12,887
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Quote:
Originally Posted by Steve Melton
I have become slower after painting or I'm loafing the engine more. I plan at 140 kts and normal climb =700 fpm. Fast climb on takeoff at 90kt >2000 fpm when OAT < 3C. On the last flight from Kansas to Cincy at 11.5K my TAS was 139 at 2200 RPM burning 5.7 gph, OAT =1C.
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You must be down around 50% power for those speeds? Those numbers exactly match what I saw when I had the O-290 in my -9, only my RPM would be up on the 2600 RPM redline (fixed pitch prop). All that worked out to around 60 - 65% power for that little engine that could.
With the O-360 I typically cruise it at 50 to 55% power which works out to 150 to 155 knots and 7 GPH. Up in the teens, it can burn a much lower fuel numbers while keeping the speed up there.
__________________
Bill R.
RV-9 (Yes, it's a dragon tail)
O-360 w/ dual P-mags
Build the plane you want, not the plane others want you to build!
SC86 - Easley, SC
www.repucci.com/bill/baf.html
Last edited by N941WR : 02-22-2017 at 07:53 PM.
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02-22-2017, 07:32 PM
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Join Date: Apr 2011
Location: Cincinnati, OH
Posts: 2,791
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Quote:
Originally Posted by N941WR
You must be down around 50% power for those speeds? Those numbers exactly match what I saw when I had the O-290 in my -9, only my RPM would be up on the 2600 RPM redline (fixed pitch prop).
With the O-360 I typically cruise it at 50 to 55% power which works out to 150 to 155 knots and 7 GPH. Up in the teens, it can burn a much lower fuel numbers while keeping the speed up there.
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11.5K my TAS was 139 at 2200 RPM burning 5.7 gph, OAT =1C
Calculated by my spreadsheet, to memory of MP =20 Hg = 54% power.
And... I don't drive as fast as I used to. Maybe there's a correlation.
__________________
Steve Melton
Cincinnati, OH
RV-9A, Tip-up, Superior O-320, roller lifters, 160HP, WW 200RV, dual impulse slick mags, oil pressure = 65 psi, EGT = 1300F, flight hours = 800+ for all
Simplicity is the art in design.
My Artwork is freely given and published and cannot be patented.
www.rvplasticparts.com
Last edited by Steve Melton : 02-22-2017 at 07:48 PM.
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02-23-2017, 07:33 AM
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Join Date: Oct 2006
Location: Garden City, Tx
Posts: 5,147
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Quote:
Originally Posted by N941WR
With the O-360 I typically cruise it at 50 to 55% power which works out to 150 to 155 knots and 7 GPH. Up in the teens, it can burn a much lower fuel numbers while keeping the speed up there.
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I like to cruise high, in the midteens usually, and typically I will see the same TAS of 150-155 on fuel burn of 6.4-6.6.
__________________
Greg Niehues - SEL, IFR, Repairman Cert.
Garden City, TX VAF 2020 dues paid 
N16GN flying 700 hrs and counting; IO360, SDS, WWRV200, Dynon HDX, 430W
Built an off-plan RV9A with too much fuel and too much HP. Should drop dead any minute now.
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02-23-2017, 08:28 AM
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Join Date: Jan 2005
Location: SC
Posts: 12,887
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Quote:
Originally Posted by airguy
I like to cruise high, in the midteens usually, and typically I will see the same TAS of 150-155 on fuel burn of 6.4-6.6.
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Some time back I posted this.
159 knots @ 5.2 GPH. Not bad at all! I love the -9 wing!
__________________
Bill R.
RV-9 (Yes, it's a dragon tail)
O-360 w/ dual P-mags
Build the plane you want, not the plane others want you to build!
SC86 - Easley, SC
www.repucci.com/bill/baf.html
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02-23-2017, 09:44 AM
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Join Date: Oct 2006
Location: Garden City, Tx
Posts: 5,147
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Quote:
Originally Posted by N941WR
Some time back I posted this.
159 knots @ 5.2 GPH. Not bad at all! I love the -9 wing!
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Ok, you might win bragging rights on that one for now - but just let me get my injector orifices (orificii?) dialed in and we'll play a little...
In any case, I get asked all the time what kind of efficiency I get and I normally respond with "I flight plan 160 knots true at 8 gph." More than once I've been called a liar straight to my face. I just shrug my shoulders and smile, it's not my job to make believers out of the spam-canners.
__________________
Greg Niehues - SEL, IFR, Repairman Cert.
Garden City, TX VAF 2020 dues paid 
N16GN flying 700 hrs and counting; IO360, SDS, WWRV200, Dynon HDX, 430W
Built an off-plan RV9A with too much fuel and too much HP. Should drop dead any minute now.
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02-23-2017, 09:45 AM
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Join Date: Jan 2016
Location: Southwest
Posts: 1,120
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Thanks
Thanks for the data; great stuff
__________________
John S
WARNING! Information presented in this post is my opinion. All users of info have sole responsibility for determining accuracy or suitability for their use.
Dues paid 2020, worth every penny
RV9A- Status:
Tail 98% done
Wings 98% done
Fuselage Kit 98% done
Finishing Kit 35% canopy done for now
Electrical 5% in work
Firewall Forward 5% in work
www.pilotjohnsrv9.blogspot.com
Last edited by PilotjohnS : 02-26-2017 at 12:25 AM.
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