Today's Message Index:
----------------------
1. 06:09 AM - Re: Rotax 912 S vibration problems with Ivo Prop medium (kitfoxjunky)
2. 08:28 AM - GSC GTA In-Flight on my Series 3 (Andrew Matthaey)
3. 08:38 AM - Re: GSC GTA In-Flight on my Series 3 (Aerobatics@aol.com)
4. 09:11 AM - Re: GSC GTA In-Flight on my Series 3 (Fox5flyer)
5. 10:01 AM - Re: GSC GTA In-Flight on my Series 3 (AMuller589@aol.com)
6. 10:41 AM - Re: GSC GTA In-Flight on my Series 3 (jdmcbean)
7. 11:38 AM - Re: GSC GTA In-Flight on my Series 3 (Andrew Matthaey)
8. 12:40 PM - Re: GSC GTA In-Flight on my Series 3 (Andrew Matthaey)
9. 01:58 PM - Re: GSC GTA In-Flight on my Series 3 (Michel Verheughe)
10. 05:36 PM - Re: Kitfox IV Wing Construction (Jerry Liles)
11. 05:38 PM - Re: GSC GTA In-Flight on my Series 3 (Fox5flyer)
12. 05:50 PM - Re: GSC GTA In-Flight on my Series 3 (Andrew Matthaey)
13. 06:06 PM - Re: GSC GTA In-Flight on my Series 3 (Andrew Matthaey)
14. 06:13 PM - Re: GSC GTA In-Flight on my Series 3 (Fox5flyer)
15. 06:17 PM - Fuel Burn (jareds@verizon.net)
16. 07:06 PM - Re: GSC GTA In-Flight on my Series 3 (Andrew Matthaey)
17. 07:22 PM - Re: Fuel Burn (Andrew Matthaey)
18. 07:53 PM - Re: Fuel Burn (jareds@verizon.net)
19. 09:08 PM - Re: GSC GTA In-Flight on my Series 3 (Paul Seehafer)
20. 09:41 PM - Re: GSC GTA In-Flight on my Series 3 (jdmcbean)
Message 1
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| Subject: | Re: Rotax 912 S vibration problems with Ivo Prop medium |
Serialize complete at 09/27/2005 09:08:23 AM
--> Kitfox-List message posted by: kitfoxjunky <kitfoxjunky@decisionlabs.com>
Thanks for the tip John (McBean). I have been shutting off the mags at
2200-2400, but not pulling the throttle at the same time. Made a big
difference.
Gary Walsh
KF IV Anphib 912S
C-GOOT
www.decisionlabs.com/kitfox
do not archive
Message 2
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| Subject: | GSC GTA In-Flight on my Series 3 |
--> Kitfox-List message posted by: "Andrew Matthaey" <spaghettiohead@hotmail.com>
Alright List - I'm terribly sorry to beat a dead horse here, BUT...
My Kitfox 3 cruises about 70 mph at 5600 RPM on my 582 (3 Blade GSC
Ground-Adj). I nearly always cruise in the low 60's at 5200, however...As
far as 'Fox's go, I know I'm slow - but I'm looking for just a little bit
better cruise performance. My x-country from Maine to Virginia was slow
going this summer ;)
Anyway, GSC says that cruise speed increases an average of 15 mph...I would
be happy as a clam if I could get 85 mph out of my bird, but I'm sure that
15mph number is for a "cleaner" airplane...They have no numbers on what the
prop would do for a model 3, and my research hasn't turned up anything
either.
I asked Rich at GSC if I could purchase the prop and see what it did for
me...another 5 mph is NOT worth an $1800 hit. He basically said that he
didn't want a prop sent back to him because they were hard to sell... I
tried warming him up, saying I'd be the "test-ship" for a GTA prop on a
model 3 Kitfox to no avail.
So, if anybody has any comments or suggestions, I'm all ears! I would love
to cruise at 85 mph, but I don't want to touch the IVO in-flight props...the
brushes just "giving out" make me less than excited about them. Has anybody
had any dealings with GSC about their in-flight prop?
Thanks a million guys!
Andrew
On the road to retirement? Check out MSN Life Events for advice on how to
get there! http://lifeevents.msn.com/category.aspx?cid=Retirement
Message 3
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| Subject: | Re: GSC GTA In-Flight on my Series 3 |
--> Kitfox-List message posted by: Aerobatics@aol.com
In a message dated 9/27/2005 10:30:49 AM Central Daylight Time,
spaghettiohead@hotmail.com writes:
My Kitfox 3 cruises about 70 mph at 5600 RPM on my 582 (3 Blade GSC
Ground-Adj). I nearly always cruise in the low 60's at 5200, however...As
far as 'Fox's go, I know I'm slow - but I'm looking for just a little bit
better cruise performance. My x-country from Maine to Virginia was slow
going this summer ;)
Anyway, GSC says that cruise speed increases an average of 15 mph...I would
be happy as a clam if I could get 85 mph out of my bird, but I'm sure that
15mph number is for a "cleaner" airplane...They have no numbers on what the
prop would do for a model 3, and my research hasn't turned up anything
either.
I asked Rich at GSC if I could purchase the prop and see what it did for
me...another 5 mph is NOT worth an $1800 hit. He basically said that he
didn't want a prop sent back to him because they were hard to sell... I
tried warming him up, saying I'd be the "test-ship" for a GTA prop on a
model 3 Kitfox to no avail.
So, if anybody has any comments or suggestions, I'm all ears! I would love
to cruise at 85 mph, but I don't want to touch the IVO in-flight props...the
brushes just "giving out" make me less than excited about them. Has anybody
had any dealings with GSC about their in-flight prop?
Thanks a million guys!
Andrew
Do you have lift strut fairings etc?
I have a KF 2 and can cruise at 85 normal cruise is 75 at 5,600, 80 at
5,800 using a IVO ground adjustable.
Dave
I hearthe IVO has a better system for the brushes....
Message 4
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| Subject: | Re: GSC GTA In-Flight on my Series 3 |
--> Kitfox-List message posted by: "Fox5flyer" <morid@northland.lib.mi.us>
The greatest thing about the inflight adjustables is that you get the best
of both worlds. Max performance takeoff and max cruise. You don't have to
compromise.
I have no experience with the GSC GTA, but I will say that any cockpit
adjustable prop will give you a much better cruise speed than 70 mph. Of
course this is all depending on drag with the gear and struts the biggest
culprits. IVO has a unit that is long past the beta testing stage. It's
light and from what I hear, fairly reliable. You'll save a lot of gas too
and at today's prices...
Deke
> Alright List - I'm terribly sorry to beat a dead horse here, BUT...
>
> My Kitfox 3 cruises about 70 mph at 5600 RPM on my 582 (3 Blade GSC
> Ground-Adj). I nearly always cruise in the low 60's at 5200, however...As
> far as 'Fox's go, I know I'm slow - but I'm looking for just a little bit
> better cruise performance. My x-country from Maine to Virginia was slow
> going this summer ;)
>
> Anyway, GSC says that cruise speed increases an average of 15 mph...I
would
> be happy as a clam if I could get 85 mph out of my bird, but I'm sure that
> 15mph number is for a "cleaner" airplane...They have no numbers on what
the
> prop would do for a model 3, and my research hasn't turned up anything
> either.
>
> I asked Rich at GSC if I could purchase the prop and see what it did for
> me...another 5 mph is NOT worth an $1800 hit. He basically said that he
> didn't want a prop sent back to him because they were hard to sell... I
> tried warming him up, saying I'd be the "test-ship" for a GTA prop on a
> model 3 Kitfox to no avail.
>
> So, if anybody has any comments or suggestions, I'm all ears! I would love
> to cruise at 85 mph, but I don't want to touch the IVO in-flight
props...the
> brushes just "giving out" make me less than excited about them. Has
anybody
> had any dealings with GSC about their in-flight prop?
>
> Thanks a million guys!
>
> Andrew
>
> On the road to retirement? Check out MSN Life Events for advice on how to
> get there! http://lifeevents.msn.com/category.aspx?cid=Retirement
>
>
Message 5
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| Subject: | Re: GSC GTA In-Flight on my Series 3 |
--> Kitfox-List message posted by: AMuller589@aol.com
On our KF V we increased the indicated airspeed 20 mph by installing speed
kit fairings on the lift struts, the interference between the Grove landing
gear and the fuselage bottom, and moving the venturi to upper left Groves gear
position from center of the gear, and moving the cg from far forward to
midrange (saves trim drag). Comparison included same gross weight, temp.,altitude.
etc, engine rpm 47oo, MAP 24.0 on the subaru 2.2 liter with 69 in. IVO ground
adjustable prop. Then we dropped fuel consumption from 8 gph to 5 gph by
installing the fuel pressure regulato from Eggenfellner. This deriches the
accelerator flow that the computer calls for at high MAP automobile throttle
settings.
Message 6
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| Subject: | GSC GTA In-Flight on my Series 3 |
--> Kitfox-List message posted by: "jdmcbean" <jdmcbean@cableone.net>
Andrew,
Lift strut fairings will be one of the biggest gains... If you do not have
them. I'm a dealer for IVO and brushes just "giving out" has not been an
issue. Over 300 hours on mine... and several more on those that I've sold.
Has anybody had any dealings with GSC about their in-flight prop? This was
5 years ago and I have been told GSC has fixed this issue.. after approx 100
hours on a 912S powered Series 6 the thrust bearings started streaking oil
out onto the blades and around the hub.
Fly Safe !!
John & Debra McBean
www.sportplanellc.com
"The Sky is not the Limit... It's a Playground"
-----Original Message-----
From: owner-kitfox-list-server@matronics.com
[mailto:owner-kitfox-list-server@matronics.com]On Behalf Of Andrew Matthaey
Subject: Kitfox-List: GSC GTA In-Flight on my Series 3
--> Kitfox-List message posted by: "Andrew Matthaey"
<spaghettiohead@hotmail.com>
Alright List - I'm terribly sorry to beat a dead horse here, BUT...
My Kitfox 3 cruises about 70 mph at 5600 RPM on my 582 (3 Blade GSC
Ground-Adj). I nearly always cruise in the low 60's at 5200, however...As
far as 'Fox's go, I know I'm slow - but I'm looking for just a little bit
better cruise performance. My x-country from Maine to Virginia was slow
going this summer ;)
Anyway, GSC says that cruise speed increases an average of 15 mph...I would
be happy as a clam if I could get 85 mph out of my bird, but I'm sure that
15mph number is for a "cleaner" airplane...They have no numbers on what the
prop would do for a model 3, and my research hasn't turned up anything
either.
I asked Rich at GSC if I could purchase the prop and see what it did for
me...another 5 mph is NOT worth an $1800 hit. He basically said that he
didn't want a prop sent back to him because they were hard to sell... I
tried warming him up, saying I'd be the "test-ship" for a GTA prop on a
model 3 Kitfox to no avail.
So, if anybody has any comments or suggestions, I'm all ears! I would love
to cruise at 85 mph, but I don't want to touch the IVO in-flight props...the
brushes just "giving out" make me less than excited about them. Has anybody
had any dealings with GSC about their in-flight prop?
Thanks a million guys!
Andrew
On the road to retirement? Check out MSN Life Events for advice on how to
get there! http://lifeevents.msn.com/category.aspx?cid=Retirement
Message 7
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| Subject: | GSC GTA In-Flight on my Series 3 |
--> Kitfox-List message posted by: "Andrew Matthaey" <spaghettiohead@hotmail.com>
Thanks all, I've got the Struts faired, but not covered (basically pieces of
wood shaped and glued to the TE of the struts). No Jury Strut Fariings, and
no Wheel Pants...I've got those big 'ol lawnmower tires too.
Also, I'm trying to make sense of how these in-flight props work with a
2-stroke. I'm a PP with Complex sign-off, but I'm lost with this 582.
Some questions: On climb out, I obviously want max RPM. When I level off,
how do I decide where to set the RPM before increasing pitch, and how does
this affect motor performance/life? Why don't I just keep full throttle and
back-off on the pitch? GSC told me not to do that - but couldn't tell me
why...Is my fuel burn decided by the rpm I select before or after the pitch
is dialed in?
Thanks again!
Andrew
>From: "jdmcbean" <jdmcbean@cableone.net>
>Reply-To: kitfox-list@matronics.com
>To: <kitfox-list@matronics.com>
>Subject: RE: Kitfox-List: GSC GTA In-Flight on my Series 3
>Date: Tue, 27 Sep 2005 11:41:16 -0600
>
>--> Kitfox-List message posted by: "jdmcbean" <jdmcbean@cableone.net>
>
>Andrew,
> Lift strut fairings will be one of the biggest gains... If you do
>not have
>them. I'm a dealer for IVO and brushes just "giving out" has not been an
>issue. Over 300 hours on mine... and several more on those that I've sold.
>
>Has anybody had any dealings with GSC about their in-flight prop? This was
>5 years ago and I have been told GSC has fixed this issue.. after approx
>100
>hours on a 912S powered Series 6 the thrust bearings started streaking oil
>out onto the blades and around the hub.
>
>
>Fly Safe !!
>John & Debra McBean
>www.sportplanellc.com
>"The Sky is not the Limit... It's a Playground"
>
>-----Original Message-----
>From: owner-kitfox-list-server@matronics.com
>[mailto:owner-kitfox-list-server@matronics.com]On Behalf Of Andrew Matthaey
>To: kitfox-list@matronics.com
>Subject: Kitfox-List: GSC GTA In-Flight on my Series 3
>
>--> Kitfox-List message posted by: "Andrew Matthaey"
><spaghettiohead@hotmail.com>
>
>Alright List - I'm terribly sorry to beat a dead horse here, BUT...
>
>My Kitfox 3 cruises about 70 mph at 5600 RPM on my 582 (3 Blade GSC
>Ground-Adj). I nearly always cruise in the low 60's at 5200, however...As
>far as 'Fox's go, I know I'm slow - but I'm looking for just a little bit
>better cruise performance. My x-country from Maine to Virginia was slow
>going this summer ;)
>
>Anyway, GSC says that cruise speed increases an average of 15 mph...I would
>be happy as a clam if I could get 85 mph out of my bird, but I'm sure that
>15mph number is for a "cleaner" airplane...They have no numbers on what the
>prop would do for a model 3, and my research hasn't turned up anything
>either.
>
>I asked Rich at GSC if I could purchase the prop and see what it did for
>me...another 5 mph is NOT worth an $1800 hit. He basically said that he
>didn't want a prop sent back to him because they were hard to sell... I
>tried warming him up, saying I'd be the "test-ship" for a GTA prop on a
>model 3 Kitfox to no avail.
>
>So, if anybody has any comments or suggestions, I'm all ears! I would love
>to cruise at 85 mph, but I don't want to touch the IVO in-flight
>props...the
>brushes just "giving out" make me less than excited about them. Has anybody
>had any dealings with GSC about their in-flight prop?
>
>Thanks a million guys!
>
>Andrew
>
>On the road to retirement? Check out MSN Life Events for advice on how to
>get there! http://lifeevents.msn.com/category.aspx?cid=Retirement
>
>
Message 8
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| Subject: | GSC GTA In-Flight on my Series 3 |
--> Kitfox-List message posted by: "Andrew Matthaey" <spaghettiohead@hotmail.com>
Alright, sorry guys - let me rephrase my question...I'm sure i'm confusing
everybody here!
Lets say, on Climb-out I'm running 6500. I level off and rpm's jump to 6800.
If I had the in-flight prop, which is more advantageous/economical to do:
Keep the throttle wide-open and increase the pitch to bring engine speed
down to 5500, OR throttle back to bring rpm's down to, lets say, 6500 and
then increase the pitch?
Don't know what to do with the throttle LoL...
Andrew
>From: "Andrew Matthaey" <spaghettiohead@hotmail.com>
>Reply-To: kitfox-list@matronics.com
>To: kitfox-list@matronics.com
>Subject: RE: Kitfox-List: GSC GTA In-Flight on my Series 3
>Date: Tue, 27 Sep 2005 14:37:29 -0400
>
>--> Kitfox-List message posted by: "Andrew Matthaey"
><spaghettiohead@hotmail.com>
>
>Thanks all, I've got the Struts faired, but not covered (basically pieces
>of
>wood shaped and glued to the TE of the struts). No Jury Strut Fariings, and
>no Wheel Pants...I've got those big 'ol lawnmower tires too.
>
>Also, I'm trying to make sense of how these in-flight props work with a
>2-stroke. I'm a PP with Complex sign-off, but I'm lost with this 582.
>
>Some questions: On climb out, I obviously want max RPM. When I level off,
>how do I decide where to set the RPM before increasing pitch, and how does
>this affect motor performance/life? Why don't I just keep full throttle and
>back-off on the pitch? GSC told me not to do that - but couldn't tell me
>why...Is my fuel burn decided by the rpm I select before or after the pitch
>is dialed in?
>
>Thanks again!
>Andrew
>
> >From: "jdmcbean" <jdmcbean@cableone.net>
> >Reply-To: kitfox-list@matronics.com
> >To: <kitfox-list@matronics.com>
> >Subject: RE: Kitfox-List: GSC GTA In-Flight on my Series 3
> >Date: Tue, 27 Sep 2005 11:41:16 -0600
> >
> >--> Kitfox-List message posted by: "jdmcbean" <jdmcbean@cableone.net>
> >
> >Andrew,
> > Lift strut fairings will be one of the biggest gains... If you
>do
> >not have
> >them. I'm a dealer for IVO and brushes just "giving out" has not been an
> >issue. Over 300 hours on mine... and several more on those that I've
>sold.
> >
> >Has anybody had any dealings with GSC about their in-flight prop? This
>was
> >5 years ago and I have been told GSC has fixed this issue.. after approx
> >100
> >hours on a 912S powered Series 6 the thrust bearings started streaking
>oil
> >out onto the blades and around the hub.
> >
> >
> >Fly Safe !!
> >John & Debra McBean
> >www.sportplanellc.com
> >"The Sky is not the Limit... It's a Playground"
> >
> >-----Original Message-----
> >From: owner-kitfox-list-server@matronics.com
> >[mailto:owner-kitfox-list-server@matronics.com]On Behalf Of Andrew
>Matthaey
> >To: kitfox-list@matronics.com
> >Subject: Kitfox-List: GSC GTA In-Flight on my Series 3
> >
> >--> Kitfox-List message posted by: "Andrew Matthaey"
> ><spaghettiohead@hotmail.com>
> >
> >Alright List - I'm terribly sorry to beat a dead horse here, BUT...
> >
> >My Kitfox 3 cruises about 70 mph at 5600 RPM on my 582 (3 Blade GSC
> >Ground-Adj). I nearly always cruise in the low 60's at 5200, however...As
> >far as 'Fox's go, I know I'm slow - but I'm looking for just a little bit
> >better cruise performance. My x-country from Maine to Virginia was slow
> >going this summer ;)
> >
> >Anyway, GSC says that cruise speed increases an average of 15 mph...I
>would
> >be happy as a clam if I could get 85 mph out of my bird, but I'm sure
>that
> >15mph number is for a "cleaner" airplane...They have no numbers on what
>the
> >prop would do for a model 3, and my research hasn't turned up anything
> >either.
> >
> >I asked Rich at GSC if I could purchase the prop and see what it did for
> >me...another 5 mph is NOT worth an $1800 hit. He basically said that he
> >didn't want a prop sent back to him because they were hard to sell... I
> >tried warming him up, saying I'd be the "test-ship" for a GTA prop on a
> >model 3 Kitfox to no avail.
> >
> >So, if anybody has any comments or suggestions, I'm all ears! I would
>love
> >to cruise at 85 mph, but I don't want to touch the IVO in-flight
> >props...the
> >brushes just "giving out" make me less than excited about them. Has
>anybody
> >had any dealings with GSC about their in-flight prop?
> >
> >Thanks a million guys!
> >
> >Andrew
> >
> >On the road to retirement? Check out MSN Life Events for advice on how to
> >get there! http://lifeevents.msn.com/category.aspx?cid=Retirement
> >
> >
>
>
Message 9
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| Subject: | Re: GSC GTA In-Flight on my Series 3 |
--> Kitfox-List message posted by: Michel Verheughe <michel@online.no>
Andrew Matthaey wrote:
> Keep the throttle wide-open and increase the pitch to bring engine speed
> down to 5500
I don't know for sure Andrew, but I have asked myself the same question a while
ago and I think that it works like this: If you have WOT, you carb needle will
be full up, giving all the fuel it can, but at 5,500 RPM, the engine won't suck
so much air and you will run on a rich mixture.
BTW, before the Jabiru I had on my model 3 the same engine and configuration as
you and saw about the same performance. Cruising along at 70 MPH? Why not?
Who's in a hurry to land? :-)
Cheers,
Michel
Message 10
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| Subject: | Re: Kitfox IV Wing Construction |
--> Kitfox-List message posted by: Jerry Liles <wliles@bayou.com>
I get the joke. Used to love listening to Amos and Andy on the radio,
and later watching on TV. Classic comedy, especially in Louisiana where
the original Kingfish came from, Huey P. Long.
Finally got power back today for the second time and am now off the
generator. What a mess.
Les Chambers wrote:
>--> Kitfox-List message posted by: "Les Chambers" <l_chambers@ckt.net>
>
>You know, Amos never got much air time. The whole show was usually just
>Kingfish & Andy.
>
>I didn't remember she was, but that seems likely.
>
>Wonder if Jerry gets the joke? Do you know he's a retired field artillery
>major down in Louisanna somewhere? I sent him a e-mail asking if he's
>keeping his powder dry!
>
>Buster
>
>----- Original Message -----
>From: "david yeamans" <dafox@ckt.net>
>To: <kitfox-list@matronics.com>
>Subject: Re: Kitfox-List: Kitfox IV Wing Construction
>
>
>
>
>>--> Kitfox-List message posted by: "david yeamans" <dafox@ckt.net>
>>
>>Les, Wasn't Saphire Amos's Sister also ?
>> ----- Original Message -----
>> From: Les Chambers
>> To: kitfox-list@matronics.com
>> Sent: Saturday, September 24, 2005 6:23 PM
>> Subject: Re: Kitfox-List: Kitfox IV Wing Construction
>>
>>
>> --> Kitfox-List message posted by: "Les Chambers" <l_chambers@ckt.net>
>>
>> No, Saphire was the Kingfish's wife.
>>
>> ----- Original Message -----
>> From: "Jerry Liles" <wliles@bayou.com>
>> To: <kitfox-list@matronics.com>
>> Subject: Re: Kitfox-List: Kitfox IV Wing Construction
>>
>>
>> > --> Kitfox-List message posted by: Jerry Liles <wliles@bayou.com>
>> >
>> > Way back when in the last century, Avid, and I presume Kitfox, supplied
>> > a special cleaner to use on the aluminum tubes.
>>
>> > extremely effective method but eventually it no longer met EPA regs.
>>By
>> > the way another name for aluminum oxide is Saphire.
>>
>>
>>
>>
>>
>
>
>-----------------------------------------------
>Scanned by Bayou Internet for all known viruses.
>http://www.bayou.com
>
>
>
Message 11
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| Subject: | Re: GSC GTA In-Flight on my Series 3 |
--> Kitfox-List message posted by: "Fox5flyer" <morid@northland.lib.mi.us>
Andrew, I was just perusing Barnstormers and this popped up. Heck of a
deal. Might just be your ticket--if it's not already sold--so move fast.
Deke
"
IVOPROP . $450 . FOR SALE . 70 inch IVOPROP Ultralight Model Electric
In-Flight Adjustable 3 blade Prop. For engines up to 100 hp. Less than 10
hours of use. . Contact Claude Mcinnis - located Buckley, WA USA .
Telephone: 360-897-8702 . Posted September 15, 2005 .
http://barnstormers.com/cat.php?mode=search&PHPSESSID=74e7c615707f763520a43dcd9d094810
----- Original Message -----
From: "Andrew Matthaey" <spaghettiohead@hotmail.com>
Subject: RE: Kitfox-List: GSC GTA In-Flight on my Series 3
> --> Kitfox-List message posted by: "Andrew Matthaey"
<spaghettiohead@hotmail.com>
>
> Thanks all, I've got the Struts faired, but not covered (basically pieces
of
> wood shaped and glued to the TE of the struts). No Jury Strut Fariings,
and
> no Wheel Pants...I've got those big 'ol lawnmower tires too.
>
> Also, I'm trying to make sense of how these in-flight props work with a
> 2-stroke. I'm a PP with Complex sign-off, but I'm lost with this 582.
>
> Some questions: On climb out, I obviously want max RPM. When I level off,
> how do I decide where to set the RPM before increasing pitch, and how does
> this affect motor performance/life? Why don't I just keep full throttle
and
> back-off on the pitch? GSC told me not to do that - but couldn't tell me
> why...Is my fuel burn decided by the rpm I select before or after the
pitch
> is dialed in?
>
> Thanks again!
> Andrew
>
> >From: "jdmcbean" <jdmcbean@cableone.net>
> >Reply-To: kitfox-list@matronics.com
> >To: <kitfox-list@matronics.com>
> >Subject: RE: Kitfox-List: GSC GTA In-Flight on my Series 3
> >Date: Tue, 27 Sep 2005 11:41:16 -0600
> >
> >--> Kitfox-List message posted by: "jdmcbean" <jdmcbean@cableone.net>
> >
> >Andrew,
> > Lift strut fairings will be one of the biggest gains... If you
do
> >not have
> >them. I'm a dealer for IVO and brushes just "giving out" has not been an
> >issue. Over 300 hours on mine... and several more on those that I've
sold.
> >
> >Has anybody had any dealings with GSC about their in-flight prop? This
was
> >5 years ago and I have been told GSC has fixed this issue.. after approx
> >100
> >hours on a 912S powered Series 6 the thrust bearings started streaking
oil
> >out onto the blades and around the hub.
> >
> >
> >Fly Safe !!
> >John & Debra McBean
> >www.sportplanellc.com
> >"The Sky is not the Limit... It's a Playground"
> >
> >-----Original Message-----
> >From: owner-kitfox-list-server@matronics.com
> >[mailto:owner-kitfox-list-server@matronics.com]On Behalf Of Andrew
Matthaey
> >To: kitfox-list@matronics.com
> >Subject: Kitfox-List: GSC GTA In-Flight on my Series 3
> >
> >--> Kitfox-List message posted by: "Andrew Matthaey"
> ><spaghettiohead@hotmail.com>
> >
> >Alright List - I'm terribly sorry to beat a dead horse here, BUT...
> >
> >My Kitfox 3 cruises about 70 mph at 5600 RPM on my 582 (3 Blade GSC
> >Ground-Adj). I nearly always cruise in the low 60's at 5200, however...As
> >far as 'Fox's go, I know I'm slow - but I'm looking for just a little bit
> >better cruise performance. My x-country from Maine to Virginia was slow
> >going this summer ;)
> >
> >Anyway, GSC says that cruise speed increases an average of 15 mph...I
would
> >be happy as a clam if I could get 85 mph out of my bird, but I'm sure
that
> >15mph number is for a "cleaner" airplane...They have no numbers on what
the
> >prop would do for a model 3, and my research hasn't turned up anything
> >either.
> >
> >I asked Rich at GSC if I could purchase the prop and see what it did for
> >me...another 5 mph is NOT worth an $1800 hit. He basically said that he
> >didn't want a prop sent back to him because they were hard to sell... I
> >tried warming him up, saying I'd be the "test-ship" for a GTA prop on a
> >model 3 Kitfox to no avail.
> >
> >So, if anybody has any comments or suggestions, I'm all ears! I would
love
> >to cruise at 85 mph, but I don't want to touch the IVO in-flight
> >props...the
> >brushes just "giving out" make me less than excited about them. Has
anybody
> >had any dealings with GSC about their in-flight prop?
> >
> >Thanks a million guys!
> >
> >Andrew
> >
> >On the road to retirement? Check out MSN Life Events for advice on how to
> >get there! http://lifeevents.msn.com/category.aspx?cid=Retirement
> >
> >
>
>
Message 12
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|
| Subject: | Re: GSC GTA In-Flight on my Series 3 |
--> Kitfox-List message posted by: "Andrew Matthaey" <spaghettiohead@hotmail.com>
So the trick is to throttle back a little bit after leveling-out and then
increasing pitch? So really, I know exactly how much airspeed I'll gain -
all I have to do is cruise around at 6300 or so, because that is what my
airspeed will be after I dial in the pitch when I get the prop? Am I
correct, or way off LoL!
Thanks...
Andrew
>From: Michel Verheughe <michel@online.no>
>Reply-To: kitfox-list@matronics.com
>To: kitfox-list@matronics.com
>Subject: Re: Kitfox-List: GSC GTA In-Flight on my Series 3
>Date: Tue, 27 Sep 2005 22:55:11 +0200
>
>--> Kitfox-List message posted by: Michel Verheughe <michel@online.no>
>
>Andrew Matthaey wrote:
> > Keep the throttle wide-open and increase the pitch to bring engine speed
> > down to 5500
>
>I don't know for sure Andrew, but I have asked myself the same question a
>while
>ago and I think that it works like this: If you have WOT, you carb needle
>will
>be full up, giving all the fuel it can, but at 5,500 RPM, the engine won't
>suck
>so much air and you will run on a rich mixture.
>
>BTW, before the Jabiru I had on my model 3 the same engine and
>configuration as
>you and saw about the same performance. Cruising along at 70 MPH? Why not?
>Who's in a hurry to land? :-)
>
>Cheers,
>Michel
>
>
Message 13
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|
| Subject: | Re: GSC GTA In-Flight on my Series 3 |
--> Kitfox-List message posted by: "Andrew Matthaey" <spaghettiohead@hotmail.com>
IVO said the Ultralight prop wouldn't work with the 3.47 C-Box...would break
it apart...what do you think? I'd certainly jump on it!
Andrew
>From: "Fox5flyer" <morid@northland.lib.mi.us>
>Reply-To: kitfox-list@matronics.com
>To: <kitfox-list@matronics.com>
>Subject: Re: Kitfox-List: GSC GTA In-Flight on my Series 3
>Date: Tue, 27 Sep 2005 20:37:19 -0400
>
>--> Kitfox-List message posted by: "Fox5flyer" <morid@northland.lib.mi.us>
>
>Andrew, I was just perusing Barnstormers and this popped up. Heck of a
>deal. Might just be your ticket--if it's not already sold--so move fast.
>Deke
>"
>IVOPROP . $450 . FOR SALE . 70 inch IVOPROP Ultralight Model Electric
>In-Flight Adjustable 3 blade Prop. For engines up to 100 hp. Less than 10
>hours of use. . Contact Claude Mcinnis - located Buckley, WA USA .
>Telephone: 360-897-8702 . Posted September 15, 2005 .
>
>http://barnstormers.com/cat.php?mode=search&PHPSESSID=74e7c615707f763520a43dcd9d094810
>
>
>----- Original Message -----
>
>From: "Andrew Matthaey" <spaghettiohead@hotmail.com>
>To: <kitfox-list@matronics.com>
>Subject: RE: Kitfox-List: GSC GTA In-Flight on my Series 3
>
>
> > --> Kitfox-List message posted by: "Andrew Matthaey"
><spaghettiohead@hotmail.com>
> >
> > Thanks all, I've got the Struts faired, but not covered (basically
>pieces
>of
> > wood shaped and glued to the TE of the struts). No Jury Strut Fariings,
>and
> > no Wheel Pants...I've got those big 'ol lawnmower tires too.
> >
> > Also, I'm trying to make sense of how these in-flight props work with a
> > 2-stroke. I'm a PP with Complex sign-off, but I'm lost with this 582.
> >
> > Some questions: On climb out, I obviously want max RPM. When I level
>off,
> > how do I decide where to set the RPM before increasing pitch, and how
>does
> > this affect motor performance/life? Why don't I just keep full throttle
>and
> > back-off on the pitch? GSC told me not to do that - but couldn't tell me
> > why...Is my fuel burn decided by the rpm I select before or after the
>pitch
> > is dialed in?
> >
> > Thanks again!
> > Andrew
> >
> > >From: "jdmcbean" <jdmcbean@cableone.net>
> > >Reply-To: kitfox-list@matronics.com
> > >To: <kitfox-list@matronics.com>
> > >Subject: RE: Kitfox-List: GSC GTA In-Flight on my Series 3
> > >Date: Tue, 27 Sep 2005 11:41:16 -0600
> > >
> > >--> Kitfox-List message posted by: "jdmcbean" <jdmcbean@cableone.net>
> > >
> > >Andrew,
> > > Lift strut fairings will be one of the biggest gains... If you
>do
> > >not have
> > >them. I'm a dealer for IVO and brushes just "giving out" has not been
>an
> > >issue. Over 300 hours on mine... and several more on those that I've
>sold.
> > >
> > >Has anybody had any dealings with GSC about their in-flight prop? This
>was
> > >5 years ago and I have been told GSC has fixed this issue.. after
>approx
> > >100
> > >hours on a 912S powered Series 6 the thrust bearings started streaking
>oil
> > >out onto the blades and around the hub.
> > >
> > >
> > >Fly Safe !!
> > >John & Debra McBean
> > >www.sportplanellc.com
> > >"The Sky is not the Limit... It's a Playground"
> > >
> > >-----Original Message-----
> > >From: owner-kitfox-list-server@matronics.com
> > >[mailto:owner-kitfox-list-server@matronics.com]On Behalf Of Andrew
>Matthaey
> > >To: kitfox-list@matronics.com
> > >Subject: Kitfox-List: GSC GTA In-Flight on my Series 3
> > >
> > >--> Kitfox-List message posted by: "Andrew Matthaey"
> > ><spaghettiohead@hotmail.com>
> > >
> > >Alright List - I'm terribly sorry to beat a dead horse here, BUT...
> > >
> > >My Kitfox 3 cruises about 70 mph at 5600 RPM on my 582 (3 Blade GSC
> > >Ground-Adj). I nearly always cruise in the low 60's at 5200,
>however...As
> > >far as 'Fox's go, I know I'm slow - but I'm looking for just a little
>bit
> > >better cruise performance. My x-country from Maine to Virginia was slow
> > >going this summer ;)
> > >
> > >Anyway, GSC says that cruise speed increases an average of 15 mph...I
>would
> > >be happy as a clam if I could get 85 mph out of my bird, but I'm sure
>that
> > >15mph number is for a "cleaner" airplane...They have no numbers on what
>the
> > >prop would do for a model 3, and my research hasn't turned up anything
> > >either.
> > >
> > >I asked Rich at GSC if I could purchase the prop and see what it did
>for
> > >me...another 5 mph is NOT worth an $1800 hit. He basically said that he
> > >didn't want a prop sent back to him because they were hard to sell... I
> > >tried warming him up, saying I'd be the "test-ship" for a GTA prop on a
> > >model 3 Kitfox to no avail.
> > >
> > >So, if anybody has any comments or suggestions, I'm all ears! I would
>love
> > >to cruise at 85 mph, but I don't want to touch the IVO in-flight
> > >props...the
> > >brushes just "giving out" make me less than excited about them. Has
>anybody
> > >had any dealings with GSC about their in-flight prop?
> > >
> > >Thanks a million guys!
> > >
> > >Andrew
> > >
> > >On the road to retirement? Check out MSN Life Events for advice on how
>to
> > >get there! http://lifeevents.msn.com/category.aspx?cid=Retirement
> > >
> > >
> >
> >
>
>
On the road to retirement? Check out MSN Life Events for advice on how to
get there! http://lifeevents.msn.com/category.aspx?cid=Retirement
Message 14
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|
| Subject: | Re: GSC GTA In-Flight on my Series 3 |
--> Kitfox-List message posted by: "Fox5flyer" <morid@northland.lib.mi.us>
You can add considerably more pitch than that. The 582 will do nicely at
5800 rpm.
Deke
----- Original Message -----
From: "Andrew Matthaey" <spaghettiohead@hotmail.com>
Subject: Re: Kitfox-List: GSC GTA In-Flight on my Series 3
> --> Kitfox-List message posted by: "Andrew Matthaey"
<spaghettiohead@hotmail.com>
>
> So the trick is to throttle back a little bit after leveling-out and then
> increasing pitch? So really, I know exactly how much airspeed I'll gain -
> all I have to do is cruise around at 6300 or so, because that is what my
> airspeed will be after I dial in the pitch when I get the prop? Am I
> correct, or way off LoL!
> Thanks...
> Andrew
>
>
> >From: Michel Verheughe <michel@online.no>
> >Reply-To: kitfox-list@matronics.com
> >To: kitfox-list@matronics.com
> >Subject: Re: Kitfox-List: GSC GTA In-Flight on my Series 3
> >Date: Tue, 27 Sep 2005 22:55:11 +0200
> >
> >--> Kitfox-List message posted by: Michel Verheughe <michel@online.no>
> >
> >Andrew Matthaey wrote:
> > > Keep the throttle wide-open and increase the pitch to bring engine
speed
> > > down to 5500
> >
> >I don't know for sure Andrew, but I have asked myself the same question a
> >while
> >ago and I think that it works like this: If you have WOT, you carb needle
> >will
> >be full up, giving all the fuel it can, but at 5,500 RPM, the engine
won't
> >suck
> >so much air and you will run on a rich mixture.
> >
> >BTW, before the Jabiru I had on my model 3 the same engine and
> >configuration as
> >you and saw about the same performance. Cruising along at 70 MPH? Why
not?
> >Who's in a hurry to land? :-)
> >
> >Cheers,
> >Michel
> >
> >
>
>
Message 15
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|
Don Smythe Home <albertaiv@aol.com>
Gecko/20040804 Netscape/7.2 (ax)
--> Kitfox-List message posted by: "jareds@verizon.net" <jareds@verizon.net>
Hi all,
Sad that after almost 2 years of flight I"ve finally gotten
to the point of worrying about a long cross country and my
available fuel. I'd really love some feedback on these
preliminary tests.
582
Fuel Tanks / Burn / Capacity:
Left Tank:
12 (Possibly 13)Gallons Capacity
5 Gal / hr burn avg
2.4 EIS Tac flight time
2:17 hrs Timer flight time
2.5 pints Oil consumed / Tank (Total Oil reservoir unkwn
(Est 4 pints))
Approx 213 Miles at an avg speed of 77 mph gps (calm day)
6000rpm
1 gallons unusable in tank
Message 16
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|
| Subject: | Re: GSC GTA In-Flight on my Series 3 |
--> Kitfox-List message posted by: "Andrew Matthaey" <spaghettiohead@hotmail.com>
Deke, I usually (almost always, actually) cruise my 582 at 5200 - I get low
fuel burn and decent airspeed (63ish). I even flew all the 11 hrs to
Virginia at 5200! But let's say I were to cruies at 6300 tomorrow - and I
get 80 mph...IF were to have an in-flight prop, and I set the throttle at
6300, then dialed in the pitch to bring it down to 5200 or so, would I see
that SAME 80 mph? Because all I'm doing is slowing down the motor...nothing
more, correct?!
Andrew
>From: "Fox5flyer" <morid@northland.lib.mi.us>
>Reply-To: kitfox-list@matronics.com
>To: <kitfox-list@matronics.com>
>Subject: Re: Kitfox-List: GSC GTA In-Flight on my Series 3
>Date: Tue, 27 Sep 2005 21:12:05 -0400
>
>--> Kitfox-List message posted by: "Fox5flyer" <morid@northland.lib.mi.us>
>
>You can add considerably more pitch than that. The 582 will do nicely at
>5800 rpm.
>Deke
>
>----- Original Message -----
>From: "Andrew Matthaey" <spaghettiohead@hotmail.com>
>To: <kitfox-list@matronics.com>
>Subject: Re: Kitfox-List: GSC GTA In-Flight on my Series 3
>
>
> > --> Kitfox-List message posted by: "Andrew Matthaey"
><spaghettiohead@hotmail.com>
> >
> > So the trick is to throttle back a little bit after leveling-out and
>then
> > increasing pitch? So really, I know exactly how much airspeed I'll gain
>-
> > all I have to do is cruise around at 6300 or so, because that is what my
> > airspeed will be after I dial in the pitch when I get the prop? Am I
> > correct, or way off LoL!
> > Thanks...
> > Andrew
> >
> >
> > >From: Michel Verheughe <michel@online.no>
> > >Reply-To: kitfox-list@matronics.com
> > >To: kitfox-list@matronics.com
> > >Subject: Re: Kitfox-List: GSC GTA In-Flight on my Series 3
> > >Date: Tue, 27 Sep 2005 22:55:11 +0200
> > >
> > >--> Kitfox-List message posted by: Michel Verheughe <michel@online.no>
> > >
> > >Andrew Matthaey wrote:
> > > > Keep the throttle wide-open and increase the pitch to bring engine
>speed
> > > > down to 5500
> > >
> > >I don't know for sure Andrew, but I have asked myself the same question
>a
> > >while
> > >ago and I think that it works like this: If you have WOT, you carb
>needle
> > >will
> > >be full up, giving all the fuel it can, but at 5,500 RPM, the engine
>won't
> > >suck
> > >so much air and you will run on a rich mixture.
> > >
> > >BTW, before the Jabiru I had on my model 3 the same engine and
> > >configuration as
> > >you and saw about the same performance. Cruising along at 70 MPH? Why
>not?
> > >Who's in a hurry to land? :-)
> > >
> > >Cheers,
> > >Michel
> > >
> > >
> >
> >
>
>
Dont just search. Find. Check out the new MSN Search!
http://search.msn.click-url.com/go/onm00200636ave/direct/01/
Message 17
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|
--> Kitfox-List message posted by: "Andrew Matthaey" <spaghettiohead@hotmail.com>
That oughta sound good Jared...if you remember way back in the summer I
posted my experience - nearly running both tanks dry on my first x-country
(caught some flak from a couple listers here!).
I found my 582 burned over 5 gph at 5800. I've got 6 gal left tank and 12 or
13 gal right...gives me 3 hrs without a comfortable reserve. Throttling back
to 5200 I've burned under 4 gph - been airborne for over 3 hrs with a good
2.5 left in the tanks (if my bladder could last that long!)
Good luck,
Andrew
>From: "jareds@verizon.net" <jareds@verizon.net>
>Reply-To: kitfox-list@matronics.com
>To: kitfox-list@matronics.com, Don Smythe Home <albertaiv@aol.com>
>Gecko/20040804 Netscape/7.2 (ax)
>Subject: Kitfox-List: Fuel Burn
>Date: Tue, 27 Sep 2005 20:22:33 -0500
>
>--> Kitfox-List message posted by: "jareds@verizon.net"
><jareds@verizon.net>
>
>Hi all,
>Sad that after almost 2 years of flight I"ve finally gotten
>to the point of worrying about a long cross country and my
>available fuel. I'd really love some feedback on these
>preliminary tests.
>
>582
>Fuel Tanks / Burn / Capacity:
>Left Tank:
>12 (Possibly 13)Gallons Capacity
>5 Gal / hr burn avg
>2.4 EIS Tac flight time
>2:17 hrs Timer flight time
>2.5 pints Oil consumed / Tank (Total Oil reservoir unkwn
>(Est 4 pints))
>Approx 213 Miles at an avg speed of 77 mph gps (calm day)
>6000rpm
>
>1 gallons unusable in tank
>
>
Dont just search. Find. Check out the new MSN Search!
http://search.msn.click-url.com/go/onm00200636ave/direct/01/
Message 18
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|
--> Kitfox-List message posted by: "jareds@verizon.net" <jareds@verizon.net>
Thanks andrew. I don't always monitor the list but try to
search topics before posting the same things.
I'm glad my numbers are matching pretty close. I'v had so
many other issues that now it's nice to relax with some of
these tests. Time to enjoy the plane....
I don't know how much oil my reservoir holds but i think its
stock SS for the model 4 but as long as i take my "little
peedeee" along or hang it out the doors there's no stoppin
me on a long trip.
Now that i'm up here in South Dakota i can land about
anywhere in someones pasture or country road to take a break!
Andrew Matthaey wrote:
> --> Kitfox-List message posted by: "Andrew Matthaey" <spaghettiohead@hotmail.com>
>
> That oughta sound good Jared...if you remember way back in the summer I
> posted my experience - nearly running both tanks dry on my first x-country
> (caught some flak from a couple listers here!).
>
> I found my 582 burned over 5 gph at 5800. I've got 6 gal left tank and 12 or
> 13 gal right...gives me 3 hrs without a comfortable reserve. Throttling back
> to 5200 I've burned under 4 gph - been airborne for over 3 hrs with a good
> 2.5 left in the tanks (if my bladder could last that long!)
>
> Good luck,
> Andrew
>
>
>
>>From: "jareds@verizon.net" <jareds@verizon.net>
>>Reply-To: kitfox-list@matronics.com
>>To: kitfox-list@matronics.com, Don Smythe Home <albertaiv@aol.com>
>>Gecko/20040804 Netscape/7.2 (ax)
>>Subject: Kitfox-List: Fuel Burn
>>Date: Tue, 27 Sep 2005 20:22:33 -0500
>>
>>--> Kitfox-List message posted by: "jareds@verizon.net"
>><jareds@verizon.net>
>>
>>Hi all,
>>Sad that after almost 2 years of flight I"ve finally gotten
>>to the point of worrying about a long cross country and my
>>available fuel. I'd really love some feedback on these
>>preliminary tests.
>>
>>582
>>Fuel Tanks / Burn / Capacity:
>>Left Tank:
>>12 (Possibly 13)Gallons Capacity
>>5 Gal / hr burn avg
>>2.4 EIS Tac flight time
>>2:17 hrs Timer flight time
>>2.5 pints Oil consumed / Tank (Total Oil reservoir unkwn
>>(Est 4 pints))
>>Approx 213 Miles at an avg speed of 77 mph gps (calm day)
>>6000rpm
>>
>>1 gallons unusable in tank
>>
>>
>
>
> Dont just search. Find. Check out the new MSN Search!
> http://search.msn.click-url.com/go/onm00200636ave/direct/01/
>
>
>
>
>
>
>
Message 19
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|
| Subject: | Re: GSC GTA In-Flight on my Series 3 |
--> Kitfox-List message posted by: "Paul Seehafer" <av8rps@tznet.com>
Andrew,
Here are a few copies of previous posts regarding IVO prop performance...
Paul Seehafer
+++++++++++++++
Subject: IVO Prop
Any of the Listers that could offer an opnion regarding the electrical
IVO
prop?
Regards
Hugo
+++++++++++++++
Gary Algate wrote:
I have the 72" Electric IVOPROP on my lite2 582 and it is probably the
single most effective addition I've made. With the GSC Ground adjustable
prop I was consistently changing pitch as the weather changed and
whenever I achieved the best pitch performance setting for the hot humid
summers here I was then chasing high EGT's on descent.
With the IVO you always have the best possible pitch setting for all
conditions. I am now a little faster in cruise, a great deal faster on
take off performance and use less gas. Another great feature is the
ability to go to a really fine pitch setting on final to increase the
descent rate without increasing speed, the roll out is also
significantly reduced.
Am I happy?
Yes.
Gary Algate
Lite2/582
KFII/618
+++++++++++
Hi, Folks
Happy New Year.
As I've installed the IVO propeller, some might like to know my exp. so
far.
It's an IVO 66", yes- 66", IVO recommended 68" - but I'll found that
this was pretty much on the edge for this kind of gear box, so I've
decided to use the same diameter as before (with GSC) 66".
The propeller type is: UL366Q (made the 8 of July 2002).
This blades is the same as used on their in-flight adjustable system, so
with this kind (yr.2002 mfd.) of blades upgrade is easy.
I've learned about this propeller from a friend flying trikes and alike.
I've noticed the ease of adjusting this propeller, just one (big)
counter nut to loosen, then adjust the center screw and retighten the
counter nut. All in all very easy to do, and the prop. is in perfect
balance all the time.
The first run up was remarkable, no unbalance and very smooth, I've
later learned that; this is the trade mark of IVO.
Well, the prop was delivered with the three blades, three (lets call em)
hub washers, then the counter nut and the adjustment screw. Sure, there
were six 8 mm bolts also ( 8 mm is a little more than 5/16"), thou
without locking wire hole.
According to the install instruction, the thick washer (1/2") has to be
mounted against the engine flange, next is the blades, the thin threaded
plate (3/8") with the preinstalled adjustment screw and finally the six
mounting screws.
Are you following? I've said three "hub washers" and the installation
called for only two! Well the extra plate was of the 1/2" size. As the
bolts length obviously included the extra "hub" washer, an e-mail to IVO
revealed that this extra washer was needed when you had an A or B
(Rotax) gearbox. If you look at the engine flange on those kind of gear
boxes, you'll see there is a pipe stub extending some in the center of
this flange.
To avoid conflict during adjustment (be able to adjust the set screw
fully in without touching this stub and limiting the adjustment span)
they added this extra "hub" plate. So there will be two "hub" plates to
the engine flange, then the blades and so on..
However, as there was no conflict with this stub in my setup, there was
no need for three "hub" plates. Anyhow, I had to use all the "hub"
plates to fill out for the bolt lengths.
As there were no need for the "out" spacing of the propeller, I mounted
one (1/2") "hub" plate, then the blades, next the second (1/2") "hub"
plate, then the threaded (3/8") "hub" plate with the adjustment screw
installed and finally the six propeller bolts.
Without any idea about the pitch angle, I used the built in pitch, yes
installed it so that all the adjustment arms are unmodified by the
adjustment screw then fasten the counter nut. (Forgot to mention the
propeller bolt torque, the required torque is 200 inch. lbs.)
The first run up with full throttle ended at 5850 RPM, much to low - but
I could not hold my fox with the brake !? First time this happened.
After two or maybe three more adjustments/run ups, I've finally ended up
with 6150 RPM.
Well, how good is this propeller?
Here is a brief before and after test:
With the old GSC propeller:
Test made at 2000' at 20 deg. C (68 deg. F) and 1020 hpa (mb). MTOW:
811 lbs.
5200 RPM CAS 59 Mph
5500 RPM CAS 63 Mph
6000 RPM CAS 72 Mph.
With the IVO propeller:
Test made at 1000' at 14.5 deg. C (58.1 deg. F) and 1012 hpa (mb)
MTOW: 722 lbs.
5000 RPM CAS 64 Mph
5200 RPM CAS 67.5 Mph
6800 RPM CAS 85.5 Mph (full power)
Now it's time to do some math:
The idea is to find out how much power is needed to go at 67.5 Mph. By
using this method, we can figure a drag graph for our Fox, or rather
find out the most economical cruise speed for our craft.
The relation between the delta power and delta speed in the power of
three is well known.
So here is the equation:
P2/P1=(V2/V1)
3 ):
We rearrange and have: P1=P2/(V2/V1)
3 Then insert some numbers..
P1= 47 (Kw)/ (85.5 Mph/67.5Mph)
3=47 (Kw)/(1.267)
3=23.127 Kw
To se how much power in percent used to get 67.5 Mph speed, we have:
N=(P1/P2)*100=(23.127/47)*100=49.205~ 49 percent of the avail is needed
to cruise at 67.5 Mph under the present met. Conditions.
Compare your slide position to this result.
By sampling more speeds and just fill in the numbers, you'll find the
minimum in the drag/speed relations for your Kitfox to determine the
best economical cruising speed.
Remember, all numbers to be used for realistic measurements must be done
under exactly the same conditions.
Yes, I'm very satisfied with my IVO propeller.
BTW, here is the link to IVO prop web site:
http://www.ivoprop.com/
Torgeir.
+++++++++++++++++++
I love the heck out of 'em...I ran a Warp square tip for 100 hours and
switched to the IVO. At the same static RPM, I got a little better climb and
picked up 7 mph in cruise. The IVO flex is recommended for the pulse
frequencies of the 2 stroke Rotax...
Steve Cooper
USUA BFI A67315
Avid Mark IV
618/Tailwheel
++++++++++++++++++++
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| Subject: | GSC GTA In-Flight on my Series 3 |
--> Kitfox-List message posted by: "jdmcbean" <jdmcbean@cableone.net>
If you decide to "jump on it" make sure it is for a tractor and not a
pusher and left turning for the 582. I have only heard not to use the light
prop on the 3:1 gear boxes... but there are a few out there running that as
well.
Fly Safe !!
John & Debra McBean
www.sportplanellc.com
"The Sky is not the Limit... It's a Playground"
-----Original Message-----
From: owner-kitfox-list-server@matronics.com
[mailto:owner-kitfox-list-server@matronics.com]On Behalf Of Andrew Matthaey
Subject: Re: Kitfox-List: GSC GTA In-Flight on my Series 3
--> Kitfox-List message posted by: "Andrew Matthaey"
<spaghettiohead@hotmail.com>
IVO said the Ultralight prop wouldn't work with the 3.47 C-Box...would break
it apart...what do you think? I'd certainly jump on it!
Andrew
>From: "Fox5flyer" <morid@northland.lib.mi.us>
>Reply-To: kitfox-list@matronics.com
>To: <kitfox-list@matronics.com>
>Subject: Re: Kitfox-List: GSC GTA In-Flight on my Series 3
>Date: Tue, 27 Sep 2005 20:37:19 -0400
>
>--> Kitfox-List message posted by: "Fox5flyer" <morid@northland.lib.mi.us>
>
>Andrew, I was just perusing Barnstormers and this popped up. Heck of a
>deal. Might just be your ticket--if it's not already sold--so move fast.
>Deke
>"
>IVOPROP . $450 . FOR SALE . 70 inch IVOPROP Ultralight Model Electric
>In-Flight Adjustable 3 blade Prop. For engines up to 100 hp. Less than 10
>hours of use. . Contact Claude Mcinnis - located Buckley, WA USA .
>Telephone: 360-897-8702 . Posted September 15, 2005 .
>
>http://barnstormers.com/cat.php?mode=search&PHPSESSID=74e7c615707f763520a43
dcd9d094810
>
>
>----- Original Message -----
>
>From: "Andrew Matthaey" <spaghettiohead@hotmail.com>
>To: <kitfox-list@matronics.com>
>Subject: RE: Kitfox-List: GSC GTA In-Flight on my Series 3
>
>
> > --> Kitfox-List message posted by: "Andrew Matthaey"
><spaghettiohead@hotmail.com>
> >
> > Thanks all, I've got the Struts faired, but not covered (basically
>pieces
>of
> > wood shaped and glued to the TE of the struts). No Jury Strut Fariings,
>and
> > no Wheel Pants...I've got those big 'ol lawnmower tires too.
> >
> > Also, I'm trying to make sense of how these in-flight props work with a
> > 2-stroke. I'm a PP with Complex sign-off, but I'm lost with this 582.
> >
> > Some questions: On climb out, I obviously want max RPM. When I level
>off,
> > how do I decide where to set the RPM before increasing pitch, and how
>does
> > this affect motor performance/life? Why don't I just keep full throttle
>and
> > back-off on the pitch? GSC told me not to do that - but couldn't tell me
> > why...Is my fuel burn decided by the rpm I select before or after the
>pitch
> > is dialed in?
> >
> > Thanks again!
> > Andrew
> >
> > >From: "jdmcbean" <jdmcbean@cableone.net>
> > >Reply-To: kitfox-list@matronics.com
> > >To: <kitfox-list@matronics.com>
> > >Subject: RE: Kitfox-List: GSC GTA In-Flight on my Series 3
> > >Date: Tue, 27 Sep 2005 11:41:16 -0600
> > >
> > >--> Kitfox-List message posted by: "jdmcbean" <jdmcbean@cableone.net>
> > >
> > >Andrew,
> > > Lift strut fairings will be one of the biggest gains... If you
>do
> > >not have
> > >them. I'm a dealer for IVO and brushes just "giving out" has not been
>an
> > >issue. Over 300 hours on mine... and several more on those that I've
>sold.
> > >
> > >Has anybody had any dealings with GSC about their in-flight prop? This
>was
> > >5 years ago and I have been told GSC has fixed this issue.. after
>approx
> > >100
> > >hours on a 912S powered Series 6 the thrust bearings started streaking
>oil
> > >out onto the blades and around the hub.
> > >
> > >
> > >Fly Safe !!
> > >John & Debra McBean
> > >www.sportplanellc.com
> > >"The Sky is not the Limit... It's a Playground"
> > >
> > >-----Original Message-----
> > >From: owner-kitfox-list-server@matronics.com
> > >[mailto:owner-kitfox-list-server@matronics.com]On Behalf Of Andrew
>Matthaey
> > >To: kitfox-list@matronics.com
> > >Subject: Kitfox-List: GSC GTA In-Flight on my Series 3
> > >
> > >--> Kitfox-List message posted by: "Andrew Matthaey"
> > ><spaghettiohead@hotmail.com>
> > >
> > >Alright List - I'm terribly sorry to beat a dead horse here, BUT...
> > >
> > >My Kitfox 3 cruises about 70 mph at 5600 RPM on my 582 (3 Blade GSC
> > >Ground-Adj). I nearly always cruise in the low 60's at 5200,
>however...As
> > >far as 'Fox's go, I know I'm slow - but I'm looking for just a little
>bit
> > >better cruise performance. My x-country from Maine to Virginia was slow
> > >going this summer ;)
> > >
> > >Anyway, GSC says that cruise speed increases an average of 15 mph...I
>would
> > >be happy as a clam if I could get 85 mph out of my bird, but I'm sure
>that
> > >15mph number is for a "cleaner" airplane...They have no numbers on what
>the
> > >prop would do for a model 3, and my research hasn't turned up anything
> > >either.
> > >
> > >I asked Rich at GSC if I could purchase the prop and see what it did
>for
> > >me...another 5 mph is NOT worth an $1800 hit. He basically said that he
> > >didn't want a prop sent back to him because they were hard to sell... I
> > >tried warming him up, saying I'd be the "test-ship" for a GTA prop on a
> > >model 3 Kitfox to no avail.
> > >
> > >So, if anybody has any comments or suggestions, I'm all ears! I would
>love
> > >to cruise at 85 mph, but I don't want to touch the IVO in-flight
> > >props...the
> > >brushes just "giving out" make me less than excited about them. Has
>anybody
> > >had any dealings with GSC about their in-flight prop?
> > >
> > >Thanks a million guys!
> > >
> > >Andrew
> > >
> > >On the road to retirement? Check out MSN Life Events for advice on how
>to
> > >get there! http://lifeevents.msn.com/category.aspx?cid=Retirement
> > >
> > >
> >
> >
>
>
On the road to retirement? Check out MSN Life Events for advice on how to
get there! http://lifeevents.msn.com/category.aspx?cid=Retirement
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