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Propeller

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Glenn Horne

Joined: 10 Jan 2006
Posts: 96

Posted: Mon Aug 23, 2010 8:12 pm Post subject: Propeller

Does anyone on the list have a 3 blade wooden  ,ground adjustable propeller 

 that they would like to  sale     

 Glenn Horne

 Model II

   [quote][b]

WurlyBird

Joined: 16 May 2008
Posts: 207
Location: North Pole, Alaska

Posted: Mon Aug 23, 2010 8:46 pm Post subject: Re: Propeller

There is a 68" GSC hanging in my son's room as a decoration.  That is all I felt it was really good for once I replaced it.  As I said recently in another thread, it is worth every penny and then some to get a bigger ground adjustable prop, I went with a 72" IVO 2 blade.  The 2 blades is more efficient and all around better performer.  What I have been told is that every 2" of diameter is equal to about 10% increase in thrust.  And being able to tune the prop by doing a pattern, landing at the approach end jump out and give it half a crank and try again is infinitely better then the method for adjusting a GSC!

_________________
James
Kitfox 3 / 582 / 70" IVO 2 blade GA
50 hrs on the 582 swapping for HKS 700E and Avid Cowl.

dave

Joined: 22 Sep 2006
Posts: 1382

Posted: Tue Aug 24, 2010 1:43 am Post subject: Re: Propeller

I have tried a bunch of different props on my 582 Kitfox .

I never found much more than a few % difference in performance prop to prop.  Keep in mind that I experimented and tweaked every prop to get max results. 



GSC 68" narrow rip works well.  harder to adjust for some.

Warp 68" SS leading edges square tip my favorite as it near in destructible in water , stones muds gravel and rain.



I have used IVO UL and medium with similar results to both props above.



IVO is a simpler prop to adjust I will say. 



The only way you will get a 10 mph gain is to go from a less that perfect pitch prop to an ideal one.



On 912 Kitfox the IVO does perform much better than a gsc I will  agree

_________________
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gofalke(at)sbcglobal.net
Guest

Posted: Tue Aug 24, 2010 5:32 pm Post subject: Propeller

Propeller for sale.

 72" - 3 blade warpdrive tapertip propeller for sale, with hub to fit Rotax 100 mm (3-15/16" dia) boltcircle, with backplate and 9" nose cone spinner. Has about 350 hrs on it and is in good shape.

 Herb Gottelt

 Mt. Prospect, Ill

 

   From: Glenn Horne <glennflys(at)verizon.net>

To: kitfox-list(at)matronics.com

Sent: Mon, August 23, 2010 8:27:22 PM

Subject: Propeller



   Does anyone on the list have a 3 blade wooden ,ground adjustable propeller 

 that they would like to sale     

 Glenn Horne

 Model II

[quote]==================


[b]

kerrimikehickman(at)aol.c
Guest

Posted: Tue Aug 24, 2010 7:38 pm Post subject: Propeller

Hello Herb, what are you asking.

   Thanks.

   Mike/Colorado

 

 

   

 

 

   --

Guy Buchanan

Joined: 16 Jul 2006
Posts: 1204
Location: Ramona, CA

Posted: Tue Aug 24, 2010 8:21 pm Post subject: Propeller

At 06:31 PM 8/24/2010, you wrote:

 	  Quote: 	
		  Propeller for sale.

72" - 3 blade warpdrive tapertip propeller for sale, with hub to fit 

Rotax 100 mm (3-15/16" dia) boltcircle, with backplate and 9" nose 

cone spinner. Has about 350 hrs on it and is in good shape.

Herb Gottelt

Mt. Prospect, Ill


	


Herb,

         You didn't say which direction it goes. Which way does it go?

Guy Buchanan

San Diego, CA

K-IV 1200 / 582-C / Warp / 500 hrs. and counting

_________________
Guy Buchanan
Deceased K-IV 1200
A glider pilot too.

WurlyBird

Joined: 16 May 2008
Posts: 207
Location: North Pole, Alaska

Posted: Sat Aug 28, 2010 7:22 pm Post subject: Re: Propeller

I can concede that the GSC was less then perfect in pitch when I took it off to put on the IVO, that was the main reason I got the IVO.  Performance was consistent with the GSC from spring to summer to fall and when winter came I just couldn't keep EGTs from pushing 1175-1200 indicated at 5800-6000.  So it was not perfect in pitch.  Where I have to disagree with you is that  there will be marked differences when you start going from three blade to two blade props and start increasing prop diameter. 



 If I remember correctly (this is a crap shoot) 2 blade to 3 blade means greater pitch for the same static thrust which translates to higher cruise speed.  Greater diameter means same pitch gives more static thrust and cruise stays the same.



So it is realistic to see an increase in cruise and climb going from a 68" 3 to a 72" 2.  Also my 10 mph gain was "indicated" and I don't trust my ASI since I can push Vne in level flight at full throttle, doors off.  So it is probably more like 6-7 mph if I calibrated it.

_________________
James
Kitfox 3 / 582 / 70" IVO 2 blade GA
50 hrs on the 582 swapping for HKS 700E and Avid Cowl.

Kitfox_Sed

Joined: 13 Jun 2007
Posts: 6
Location: Northern Illinois

Posted: Wed Sep 01, 2010 5:53 pm Post subject: Re: Propeller

Glenn,



I've got a 66" 3 blade GSC ground adjustable available.  I got it with my Model III with B gearbox.  It's never been run and is in great shape.



-- Paul S

Glenn Horne

Joined: 10 Jan 2006
Posts: 96

Posted: Thu Sep 02, 2010 5:52 am Post subject: Propeller

Thanks Paul,

 Already got one. Sorry.

GLENN

Kitfox  _Sed" <prsedlac(at)gmail.com>

To: <kitfox-list(at)matronics.com>

Sent: Wednesday, September 01, 2010 9:53 PM

Subject: Re: Propeller

 	  Quote: 	
		   



 Glenn,



 I've got a 66" 3 blade GSC ground adjustable available.  I got it with my 

 Model III with B gearbox.  It's never been run and is in great shape.



 -- Paul S





 Read this topic online here:



 http://forums.matronics.com/viewtopic.php?p=311026#311026

pchristensen10(at)austin.
Guest

Posted: Thu Sep 02, 2010 7:25 am Post subject: Propeller

Glen,

     I'd be careful using a GSC prop if it is very old.  The have an "age     date" as well as hours in service limit.  I had the following     experience a couple years ago on a prop that to this day looks like     it was never used.  Date 4/5/2008.

     

     "Dear friends,

      

     Well it turns out I'm lucky to be         alive.  I was late leaving Buckeye, AZ and flew more that 6 hrs         yesterday and had to land in Deming, NM because sun was about to         set.  This morning while doing a walk around on my Kitfox III         ,before the final leg home, I found that the blades were loose         (3 blade ground adjustable GSC prop).   One blade was so loose I         turned it by hand.  It had an annual the day I bought by a         Phoenix Kitfox guru.  I suspect it must have been loose when I         left AZ but I never checked as it was not on my checklist.  Of         course my instructor always had me check the 172's prop when I         was getting my bi-annual but I did not think to do that since         the motor on the Kitfox had not been run since the annual 4 days         earlier.

      

     What saved my life, I am sure, is         that the prop was overpitched and all I could get was 4200 rpm.          The Rotax 912 is supposed to get better than 5500 rpm and has a         gear reduction.  Because I am such a skilled pilot, (read         stupid) I accepted the performance reduction in the interest of         getting home.  I'm sure that if the prop had turned up to 5500         rpm I would not need an aircraft in order to fly.  Well assuming         I made it to heaven.

      

     Thank the Good Lord for looking         after us fools."

      

      

     Pete

     

     

     On 9/1/2010 8:53 PM, Kitfox_Sed wrote:     [quote]        	  Quote: 	
		  --> Kitfox-List message posted by: "Kitfox_Sed" <prsedlac(at)gmail.com> (prsedlac(at)gmail.com)



Glenn,



I've got a 66" 3 blade GSC ground adjustable available.  I got it with my Model III with B gearbox.  It's never been run and is in great shape.



-- Paul S





Read this topic online here:



http://forums.matronics.com/viewtopic.php?p=311026#311026



	
     [b]

daphne53932

Joined: 28 Jul 2011
Posts: 4
Location: Hagerstown, MD 21740

Posted: Fri Jul 29, 2011 11:28 am Post subject: Re: Propeller

 	  Kitfox_Sed wrote: 	
		  Glenn,



I've got a 66" 3 blade GSC ground adjustable available.  I got it with my Model III with B gearbox.  It's never been run and is in great shape.



-- Paul S 	
 	  Quote: 	
		  

Do you still have the prop for sale?

How much?

301-797-1875

joeboyle1(at)verizon.net

daphne53932

daphne53932

Joined: 28 Jul 2011
Posts: 4
Location: Hagerstown, MD 21740

Posted: Fri Jul 29, 2011 11:42 am Post subject: Re: Propeller

 	  WurlyBird wrote: 	
		  There is a 68" GSC hanging in my son's room as a decoration.  That is all I felt it was really good for once I replaced it.  As I said recently in another thread, it is worth every penny and then some to get a bigger ground adjustable prop, I went with a 72" IVO 2 blade.  The 2 blades is more efficient and all around better performer.  What I have been told is that every 2" of diameter is equal to about 10% increase in thrust.  And being able to tune the prop by doing a pattern, landing at the approach end jump out and give it half a crank and try again is infinitely better then the method for adjusting a GSC! 	


Do You want to sell it?

joeboyle1(at)verizon.net

301-797-1875

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