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Kitfox - how high have you gone ?

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dave

Joined: 22 Sep 2006
Posts: 1382

Posted: Mon May 18, 2009 6:11 pm Post subject: Kitfox - how high have you gone ?

Took mine to  15k today and it was still going. Maybe I take a bottle next time and see higher .  non turbo  582   whoa !! 





I created one here   http://rotaxaircraft.com/forum/viewtopic.php?f=29&t=122



Dave



15,143   my record on that 582 --  



Lets see who got what .

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sourdostan(at)aol.com
Guest

Posted: Mon May 18, 2009 8:52 pm Post subject: Kitfox - how high have you gone ?

My Model IV Speedster with a 912ul (80 hp) goes right up to 18k--no problem. Also helps that I start at 5600 ft. and I'm used to the altitude. 

 

  Stan Specht

  Lakewood , CO

 

 

 --

Tom Jones

Joined: 12 Mar 2006
Posts: 752
Location: Ellensburg, WA

Posted: Tue May 19, 2009 5:38 am Post subject: Re: Kitfox - how high have you gone ?

If I drew the graph from my flight test rate of climb data correctly, the service ceiling with my little engine is just a hair over 12,000.  Some day I'll have a big motor like the rest of you guys. do not archive

_________________
Tom Jones
Classic IV
503 Rotax, 72 inch Two blade Warp
Ellensburg, WA

franicaza(at)yahoo.com.mx
Guest

Posted: Tue May 19, 2009 8:09 am Post subject: Kitfox - how high have you gone ?

Almost 14,000 ft with my Kitfox Classic IV Rotax 912-S in a very turbulent day. I didn´t try to get higher as I was in a cross country.

  

 Franicisco Icaza.

 Mexico City



--- El mar 19-may-09, Tom Jones <nahsikhs(at)elltel.net> escribió:



  	  Quote: 	
		  

De:: Tom Jones <nahsikhs(at)elltel.net>

Asunto: Re: Kitfox - how high have you gone ?

A: kitfox-list(at)matronics.com

Fecha: martes 19 de mayo de 2009, 8:38



 --> Kitfox-List message posted by: "Tom Jones" <nahsikhs(at)elltel.net (nahsikhs(at)elltel.net)>



If I drew the graph from my flight test rate of climb data correctly, the service ceiling with my little engine is just a hair over 12,000.  Some day I'll have a big motor like the rest of you guys. do not archive



--------

Tom Jones

Classic IV

503 Rotax, 72 inch Two blade Warp

Ellensburg, WA





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Guy Buchanan

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

Posted: Tue May 19, 2009 12:40 pm Post subject: Kitfox - how high have you gone ?

At 07:11 PM 5/18/2009, you wrote:

 	  Quote: 	
		  Took mine to  15k today and it was still going. Maybe I take a 

bottle next time and see higher .  non turbo  582   whoa !!


	


Wow, you're good. I can only get mine to 12.5k. Of course, with a 

little mountain wave. . .

Guy Buchanan

San Diego, CA

K-IV 1200 / 582-C / Warp / 300 hrs. and counting



Do not archive

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

MichaelGibbs(at)cox.net
Guest

Posted: Tue May 19, 2009 10:12 pm Post subject: Kitfox - how high have you gone ?

 	  Quote: 	
		  Took mine to  15k today and it was still going. Maybe I take a 

bottle next time and see higher .  non turbo  582   whoa !!


	


My 912S-powered Model IV with Ivo in-flight adjustable prop made it 

to 17,500 (a density altitude of 19,200) and it was still climbing 

300 feet per minute.  The airplane was not instrument capable so I 

had to stop there.



Mike G.

N728KF, Kitfox IV-1200 Speedster

Phoenix, AZ

hlang(at)bluewin.ch
Guest

Posted: Tue May 19, 2009 11:51 pm Post subject: Kitfox - how high have you gone ?

Hello guys

Showing off with lots of altitude make no sense at all. The only real

number is the service ceiling as defined and with MTOM. Sorry to be so

blunt. 



Heinz Lang

Kitfox IV-1200

R582

JetPilot

Joined: 10 Jan 2006
Posts: 1246

Posted: Wed May 20, 2009 1:55 pm Post subject: Re: Kitfox - how high have you gone ?

 	  hlang(at)bluewin.ch wrote: 	
		  Hello guys

Showing off with lots of altitude make no sense at all. The only real

number is the service ceiling as defined and with MTOM. Sorry to be so

blunt. 



Heinz Lang

Kitfox IV-1200

R582 	




I could not disagree more, there are so many differences in Kitfoxes, that maximum altitude will vary greatly.   I don't give (at)#%(at) what some definition somewhere says, the only number important to me is what my plane will actually do...   And its fun to compare the highest altitudes, highest speeds, etc. etc. people have been doing that for a hundred years with their airplanes.  Human nature is to see how high something will actually go, or how fast they can make it go...  When people ask me about my planes, they ask " how high it will go ? ", not some garbage about definitions and service ceilings.   Ever heard of racing, its a popular sport based on maximum performance of machines, not definitions    



Mike

_________________
"NO FEAR" - If you have no fear you did not go as fast as you could have !!!

Kolb MK-III Xtra, 912-S

sourdostan(at)aol.com
Guest

Posted: Wed May 20, 2009 9:53 pm Post subject: Kitfox - how high have you gone ?

Be blunt, but you're missing out! Fly the airplane!

 

 

 --

propellerdesign(at)tele2.
Guest

Posted: Wed May 20, 2009 10:53 pm Post subject: Kitfox - how high have you gone ?

I put in the data for a Kitfox 1200 65 hp in my propeller program, it is 

using a curve for 4-stroke engine when it come to altitude performance, I 

don't know if the 2-stroke is different in loosing power with alt. but any 

way.



where it climb 100 fpm is said to be practical ceiling



assuming it will do 102 mph at sea level WOT, (drag calc) it will reach 

almost 12000´ (Climbing 100 fpm) this at MTOW 1200 lbs.



with TOW 1000 lbs it will reach 16000´  (climb 100 fpm)



with 80 HP (max speed 108.6 mph) it will go to 15000´ at 1200 lb

and 19000´ at 1000 lb



max alt will be 3000 feet higher, (where it "climb" at 0 fpm) it will take 

60 min to climb the last 3000 feet!



this is theory and  it use a standard atmosphere,

and differences in aircraft drag have big influence at alt, where power is 

limited, ( at 15000´ power is 55%)

less drag and there is more power leftover for climb.



Jan

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