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09-01-2020, 06:30 PM
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Join Date: Aug 2019
Location: Western Australia
Posts: 326
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Sold on 08-22-2020
Quote:
Originally Posted by Earl Findlay
The RV has been sold, pending receiving the remainder of the funds on Monday.
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This RV-9A indicated as being sold on 08-22-2020.
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Paul vS (yes I'm also a Van)
Building RV-6A #22320 O-320 FP. Wings and tail complete, working on fuselage
Flying my low-n-slow Aeroprakt A-22 and the aero club's RV-9A while I build
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09-06-2020, 01:53 PM
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Join Date: Sep 2006
Location: (2OK2) OK City, OK
Posts: 381
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"Slow" RV-9A Sold...
So I guess the "problem" has been solved! 
Doug Lomheim
RV-9A FWF Mazda 13B |
09-12-2020, 09:31 AM
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Join Date: Dec 2018
Location: Granada Hills
Posts: 810
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Quote:
Originally Posted by dlomheim
So I guess the "problem" has been solved!
Doug Lomheim
RV-9A FWF Mazda 13B |
Or "inherited" by the new owner.
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2020 Dues paid
N72DJ, RV-12, bought flying. A Blessing in disguise. Thank you Double D!
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09-12-2020, 06:32 PM
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Join Date: May 2008
Location: Brisbane Qld. Aust.
Posts: 2,271
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STATIC ERROR
I had the slowest RV10 in the world once too.......Static error. Once corrected all was normal.
I test flew an RV9A with an IO320 and FP prop (Sensinich-Vans) and at 7-8000' it would TAS 159-160 LOP.
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David Brown
DYNON Authorised Dealer and Installer
The two best investments you can make, by any financial test, an EMS and APS!
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09-26-2020, 06:10 PM
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Join Date: May 2009
Location: chesapeake, va
Posts: 96
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Quote:
Originally Posted by Earl Findlay
I can still make 2700 RPM at altitude though.
Is a 10-12 knot speed penalty usual for a climb prop versus a cruise prop? It sounds excessive, but I really don’t have any information to base that on.
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Absolutely yes, depending on the pitch. I have a Sensenich ground adjustable carbon fiber prop on my -9a. When I set it up initially after talking to Sensenich they gave me a very conservative number for the pitch pin. It climbed like a homesick angel - 2000FPM+, but top end was around 142 true. I also could easily exceed 2700rpm at altitude. Readjusted to more of a cruise pitch and was able to get about 152kts. Adjusted one more time, now I can easily cruise at 155kts true at 2500rpm, and can hit 165kts by going WOT at 8000ft.
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RV-9A Airworthiness certificate Oct 2017,
first flight 11/18/17, testing completed Mar 2018.
Now free to move about the country.
http://dalesrv.blogspot.com
2020 Dues Paid
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09-27-2020, 03:48 PM
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Join Date: Jan 2007
Location: Bay Village, OH
Posts: 885
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I’m with DeltaFox...
I hit 2700rpm at 165 kt true at 8000DA at WOT. I have a few more RPM with leaning. I usually cruise between 2420 and 2450 RPM, seeing 147-150kt true. I consider my current setup a little biased towards climb, but I like it.
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Rick
RV-9A N183RC/90432: tip-up, O320H2, Ellison, Dynon D180, CPi2, Sen GA, at KLPR
RV-8 83718, wing kit, tanks done, with a four year plus plan - on hold due to home move
2011-2020 VAF contributor
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10-11-2020, 09:33 PM
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Join Date: Apr 2005
Posts: 111
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0-320 w/3blade Catto fixed pitch prop.
145 knots 9 gph @ 8500’.
Well short of Vans claims......
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10-12-2020, 01:55 PM
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Join Date: Dec 2010
Location: Vacaville, CA
Posts: 167
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Quote:
Originally Posted by ksouthar
0-320 w/3blade Catto fixed pitch prop.
145 knots 9 gph @ 8500’.
Well short of Vans claims......
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Throttle setting? RPM?
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Andy Simpkinson
RV-9a Subaru engine.
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10-12-2020, 03:28 PM
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Join Date: Jul 2005
Location: Hubbard Oregon
Posts: 9,027
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Quote:
Originally Posted by ksouthar
0-320 w/3blade Catto fixed pitch prop.
145 knots 9 gph @ 8500’.
Well short of Vans claims......
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Quote:
Originally Posted by simpkinsona
Throttle setting? RPM?
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Right
As I posted previously in this thread, when comparing performance #'s, it is impossible to get a meaningful data point from just an RPM.
What if your prop is way under pitch for your airplane? If you are pulling the throttle back well below what would produce a manifold pressure that would equate to 75% power, to keep you RPM at 2600, then your airplane should be slower than the spec'ed max. cruise speed.
I always tell builders to install a manifold pressure gauge even if they are going to have a fixed pitch prop. It makes it quick and easy to set power settings without chasing an RPM and it is useful for knowing what your power output actually is.
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Opinions, information and comments are my own unless stated otherwise. They do not necessarily represent the direction/opinions of my employer.
Scott McDaniels
Van's Aircraft Engineering Prototype Shop Manager
Hubbard, Oregon
RV-6A (aka "Junkyard Special ")
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