Today's Message Index:
----------------------
1. 04:17 AM - Re: Re: Use of props (Malcolmbru@aol.com)
2. 01:21 PM - Re: Re: Use of props (Paul Seehafer)
3. 09:46 PM - Re: Re: Use of props (Larry/Cathy Boone)
Message 1
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| Subject: | Re: Use of props |
I have always felt that the 2 blade prop will give the best power . but 3
blades offer the most versatility and vibration dampening options. However I
think the nickel impregnated 3 blade warp drive prop is the most durable But
you start getting into problems with inertia and can have clutch problems.
until you put floats under it a 2 blade warp drive will work just fine.
.Malcolm Michigan
************************************** See what's free at http://www.aol.com.
Message 2
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| Subject: | 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?
Message 3
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| Subject: | 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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