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  #1  
Old 07-18-2011, 01:02 PM
rjbob rjbob is offline
 
Join Date: Jun 2010
Location: Anchorage, Alaska
Posts: 116
Default RV-9 on Floats

My friend is having his RV-9 equipped with floats. The installation should be completed in a couple of days...expected to be 07/20/2011.

He asked me to make the initial flight in the aircraft and ferry it to Lake Hood in Anchorage (the work is being done about 60nm north).

Although I've seen one or two posts asking about float equipped RV-9s, I haven't noted any first person answers on the subject.

The plane started out as an RV-9A and, after years of flying as a nose dragger, was converted to a tail dragger 2 months ago. I ferried it from the Lower 48 to Anchorage after the conversion so I know that the plane is a fine example of RVism.

O-360 with a constant speed prop makes it go.

I have read several articles by Eustace but there just ain't that much other info on the subject.

Any ideas or suggestions?

Thank you,
Bob Edison
Anchorage, Alaska
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  #2  
Old 07-18-2011, 01:07 PM
Jerry Cochran's Avatar
Jerry Cochran Jerry Cochran is offline
 
Join Date: Jan 2005
Location: Sherwood, Oregon
Posts: 978
Default

My former partner, Cliff Gerber is the current owner of the float equipped RV-7 and I think has a couple hundred hours in it. His email is:

cliffgerber@comcast.net
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Jerry Cochran
Sherwood, Oregon

RV-7a 707DD Bot from David Domeier 12/01/11
Lycoming IO-360 Catto 3 blade Panel upgrade in progress

RV6a 18XP 1st flite 03/21/07 sold to Dale Walter 10/22/2011
Superior IO-360, Hartzell Blended, GRT/Dynon

Happily "autopaying" DR

"Suppose you were an idiot, and suppose you were a member of Congress; but I repeat myself."

Mark Twain
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  #3  
Old 07-18-2011, 02:28 PM
rjbob rjbob is offline
 
Join Date: Jun 2010
Location: Anchorage, Alaska
Posts: 116
Default

Quote:
Originally Posted by Jerry Cochran View Post
My former partner, Cliff Gerber is the current owner of the float equipped RV-7 and I think has a couple hundred hours in it. His email is:

cliffgerber@comcast.net
Thanks, Jerry!

Email sent.
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  #4  
Old 07-23-2011, 05:07 PM
Av8torTom's Avatar
Av8torTom Av8torTom is offline
 
Join Date: Nov 2009
Location: Yardley, PA
Posts: 1,107
Default Pictures?

Bob,

Would LOVE to see some pictures of the 9 on floats (would that be an RV-9B? ).

Were they amphibious floats?

T.
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RV-9A (empennage completed, both wings completed, working on fuselage finish kit)
N677AT reserved
Looking for an O-320, 160HP
Picture log: http://s271.photobucket.com/albums/j...8tor215/RV-9A/
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  #5  
Old 07-23-2011, 06:33 PM
Mel's Avatar
Mel Mel is offline
 
Join Date: Mar 2005
Location: Dallas area
Posts: 9,722
Default

Quote:
Originally Posted by Av8torTom View Post
Bob,
Would LOVE to see some pictures of the 9 on floats (would that be an RV-9B? ).
Were they amphibious floats?
T.
I believe it would be an RV-9F.
__________________
Mel Asberry..DAR since last century
A&P/EAA Tech Counselor/Flight Advisor
Specializing in Amateur-Built and Light-Sport Aircraft
<rvmel(at)icloud.com>
North Texas (8TA5)
RV-6 Flying since 1993, 175hp O-320, 3-Blade Catto (since 2003)
Legend Cub purchased 12/2017
FRIEND of the RV-1
Eagle's Nest Mentor
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  #6  
Old 07-26-2011, 01:44 PM
agirard7a's Avatar
agirard7a agirard7a is offline
 
Join Date: Aug 2009
Location: Newport, RI
Posts: 593
Default floats.

Very Intersted in seeing these. Do you know who built them?
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Al Girard, Newport, RI
N339AG
RV-9
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  #7  
Old 07-26-2011, 06:29 PM
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aarvig aarvig is offline
 
Join Date: May 2008
Location: KANE, Hugo, Minnesota
Posts: 762
Default

Quote:
Originally Posted by Mel View Post
I believe it would be an RV-9F.
HAR HAR!! Good one Mel!
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Aaron Arvig
RV-9A
Empennage Done
Wings-In Progress
N568AK Reserved
SOLD…but I'll be back
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  #8  
Old 08-11-2011, 12:03 PM
questair questair is offline
 
Join Date: Jul 2007
Location: alaska
Posts: 37
Default RV-9A floatplane

N942P has approx. two hours on 2100 Baumann straight floats. Front struts attach to tube going into front landing gear socket of RV-9 motor mount and rear struts attached to fitting on rear wing attach bolt which was changed to 3/8s. A little adjustment to float placement and throat opening was needed after first flight and all seems good. Might have to put a dorsal fin on bottom of tail, but so far she does not have yaw tendency, but might at low speeds with all the float mass forward of CG. Glad to have 180HP. With RV-9 wing she gets on the step right now and is off the water unexpectedly quick. Using 72" blended airfoil CS, but will likely go to 205 MT eventually. Currently flying test protocols so have no real numbers yet, although have seen 140 mph at 2300X 23" !000 msl and 59f Will post as i go. Q
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  #9  
Old 08-11-2011, 12:54 PM
Joel Medeiros Joel Medeiros is offline
 
Join Date: Dec 2005
Posts: 22
Default You can find picture at link below

http://www.flickr.com/photos/bob_butcher/5989426778/
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  #10  
Old 08-26-2011, 12:43 PM
questair questair is offline
 
Join Date: Jul 2007
Location: alaska
Posts: 37
Default

Have put several hours on the floatplane and out of the 5 hour test mode. Had to move the floats back three inches and lower the rear float strut two inches. It now lands and takes off very smoothly with no bad characteristics whatsoever either in water handling or in flight. So far. Discovered that i had the "38" carb which was good for the high desert in Arizona but a bit too lean at sea level in anchorage. This has resulted in a bit higher CHT and EGT temps then i like. Am having the carb changed to at least a "41" Now showing 140 MPH at 23" 2350 rpm. Temps on # 2 and 3 get to around 430 after climb out and return to around 400 in cruise. four is around 390 and 1 at 370 in cruise. Baffles are good and tight, but will consider leaving a 1/4 " gap at rear of 3 to allow more air to get to the shorter fins on the aft side of that cyl. Carb mod should do most of the fix, however. Plane gets on the step about like a 180 Cub and gets to lift off speed very quickly either flying off level or by slightly raising a wing. Put gross at 1900 which is about 300# less than the 7 on amphibs built by Trey and now owned by Cliff. Empty weight now at 1253#. Using 72" blended airfoil propeller and considering 82" MT CS. But really I am so impressed with the performance may not change props. Have flown with full fuel, me at 240# and 80# in the baggage. Looking forward to the first passenger. Discovered major drawback of low wing floatplane. When it rains, and it does a lot of the time in Anchorage, you and inside gets wet when getting in and out and it is hard to put a dog inside by your self. Other wise no major issues with low wing other than there will be no pulling along side of a dock. More later.
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