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1. 09:31 AM - Re: Re: Use of props (Larry/Cathy Boone)
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| Subject: | Re: Use of props |
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Thanks Paul,
I purchased the 72 inch medium weight. It sounds like I will be in good
shape or at least a good starting place.
----- Original Message -----
From: Paul Seehafer
To: seaplane-list@matronics.com
Sent: Wednesday, April 04, 2007 2:29 PM
Subject: Re: Seaplane-List: Re: Use of props
Larry,
I believe they are 72 inch diameter 3 blade mediums.
Paul
----- Original Message -----
From: Larry/Cathy Boone
To: seaplane-list@matronics.com
Sent: Thursday, March 29, 2007 11:47 PM
Subject: Re: Seaplane-List: Re: Use of props
Do Not Archive
Thanks Paul for sharing your experience and information. Do you
remember the length of their IVO props?
----- Original Message -----
From: Paul Seehafer
To: seaplane-list@matronics.com
Sent: Thursday, March 29, 2007 1:20 PM
Subject: Re: Seaplane-List: Re: Use of props
Larry,
I fly the IVO 3 blade lightweight blade on my amphibious Kitfox 4
with a 912ul. It works very well, but you do have to make sure you use
the stainless leading edge tape or water erosion will destroy the
fibreglass blades. My Kitfox is a bit underfloated, so my prop sees a
lot of water. But the prop handles it just fine with the metal tape
(although you should plan on replacing the tape every year or so as it
tends to crack from the blade twisting a bit in flight)
After flying a Warp prop myself on an amphibious Rans S-7 with a
912s on it, I would agree the Warp drive prop is superior when it comes
to erosion. But I am pretty convinced the IVO prop will outperform the
Warp for thrust. Plus the IVO is lighter, therefore you don't have gear
box issues with it like you might have with the Warp.
If I were you I would just fly the plane using all 3 blades of
that medium IVO. I have three friends flying the medium 3 blade IVO on
912s powered Highlanders that are amphibs, and they all love the prop.
Particularly the power and the smoothness. (fwiw -they previously used
the significantly more expensive sensenich 2-blade ground adjustable
prop designed specifically for the 912uls, but they like the IVO better)
To tell you how well the IVO's perform, get this; My Model 4
amphib (incidentally with only 80 hp) will go 118 mph flat out. Now
remember, that is on floats! (see attached pic) My reduced cruise
speed (5000 rpm) is between 100-105 mph TAS. And it will climb with me
and a full tank of fuel on a warm day at 1400 fpm. I've not found
another combination of engine and prop that will do that on a
floatplane. So I am pretty well sold on the 912 and the IVO
combination. And fwiw - I do have a 912s that I plan on bolting in
place of my 80 hp one of these days. And when I do, I will be
installing an IVO 3 blade medium on that new engine (can seaplane pilots
ever have enough power?) When I have this combination installed you
just might see me out flying alongside my Cessna 180 and 185/206
floatplane buddies <GRIN>
Paul Seehafer
----- Original Message -----
From: Larry/Cathy Boone
To: seaplane-list@matronics.com
Sent: Thursday, March 29, 2007 12:50 AM
Subject: Re: Seaplane-List: Re: Use of props
I would like some opinions,
I have an S5 Kitfox and will be putting a 912ULS on in the near
future. I also purchased an IVO 72" ground adjustable 3 blade, medium
weight. I was thinking of mounting the IVO in the 2 blade configuration
to save weight and hoping to put the plane on floats in the future. Does
anyone have any experience testing the difference in performance between
the 2 and 3 blade configuration?
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