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Michel Fabic tearing topic

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dave

Joined: 22 Sep 2006
Posts: 1382

Posted: Thu Dec 28, 2006 2:20 pm Post subject: Michel Fabic tearing topic

Michel,



I just in from 2.5 hours flying today in total.

I mentioned that i was doing airstarts  after gliding the Kitfox and I 

thought about you today so I went up and shut off mags and slowed to about 

40 ias   till the prop stopped.     Then came this bright idea  *** oh yeah 

BRIGHT !!

well why not do some stalls and take off the headset to hear the sounds you 

described before and all i heard was the air leaks !!   I did about half 

dozen stalls  -- all  power off and mags too  !!  some steeper than others 

and I just get a shudder and a mush for the most part.  Now once you put 

nose down  just after you break the stall  I do get a bit of a THUD from the 

rear........  I am guessing it the disturbed air on top of wing washing onto 

the tail ?



Maybe if I hear air leaks then i have some taping and sealing to do some 

time ?



Hope that helps you and it was fun........

Dave

---

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Michel

Joined: 10 Jan 2006
Posts: 966
Location: Norway

Posted: Fri Dec 29, 2006 11:34 am Post subject: Michel Fabic tearing topic

On Dec 28, 2006, at 11:20 PM, dave wrote:

 	  Quote: 	
		   well why not do some stalls and take off the headset to hear the 

 sounds you described before and all i heard was the air leaks !!


	


That would certainly be a good way to find out where the sound is 

coming from, Dave. However, I have a problem. One year ago, I was 

talking to this list about dead-stick landing and after I was told that 

I never tried it after doing it with my instructor, I was told that I 

should. Then I obeyed and I did, and I enjoyed it. In fact, each time I 

am alone and the weather is stable, I land dead-stick. A while ago, I 

told that to the Jabiru Engine list. There, I got the opposite 

reaction. I was told that it was dangerous to cut out a perfectly 

running engine and that I could try dead-stick with the engine at idle.

Now, I am confused and I don't know if I should or I should not.



Cheers,

Michel



do not archive

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Kitfox 3 - Jabiru 2200

dave

Joined: 22 Sep 2006
Posts: 1382

Posted: Fri Dec 29, 2006 11:46 am Post subject: Michel Fabic tearing topic

Only conern that I personally would have on the Jabiru is that it is air 

cooled and potential shock cooling could certainly be a possibility.  Do you 

use a winter front in colder temps ?



Dead sticking is just gliding and we all fly gliders , powered gliders.  So 

to each his own but your glide will  most likely be further with prop 

stopped that with it at idle or windmilling.   And I know that mine will air 

start  with at least 90 mph of airpseed so even if the starter fails that is 

an option.  Other option is to land, so I guess  you should pick a spot with 

lots of places where you could land if needed.   Also If you try an air 

start you will needa good pitch down and will likley lose at least 500 feet 

trying it so do it at least a few thousand feet up.



I think you will be surprized at all the air noise, does this mean that is 

air drag that could be cleaned up ?

If you see the end of the one movie I did http://www.cfisher.com  at the 

very end  i dead sticked in and you can hear the air as I fly by.

Dave



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roncarolnikko(at)hotmail.
Guest

Posted: Fri Dec 29, 2006 5:46 pm Post subject: Michel Fabic tearing topic

Ah Michel    I always try to learn from others then do as I feel 

comfortable.   If I had not thought outside the box I would not be flying 

airplanes at all.  As long as you feel safe and comfortable then don't let 

the timid ruin your fun.   Wilbur and Orville did'nt.   Now the debate is 

on!  Ron NB Ore  do not archive

 	  Quote: 	
		  From: Michel Verheughe <michel(at)online.no>

Reply-To: kitfox-list(at)matronics.com

To: kitfox-list(at)matronics.com

Subject: Re: Michel Fabic tearing topic Date: Fri, 29 Dec 2006 

20:33:48 +0100

On Dec 28, 2006, at 11:20 PM, dave wrote:

>well why not do some stalls and take off the headset to hear the sounds 

>you described before and all i heard was the air leaks !!

That would certainly be a good way to find out where the sound is coming 

from, Dave. However, I have a problem. One year ago, I was talking to this 

list about dead-stick landing and after I was told that I never tried it 

after doing it with my instructor, I was told that I should. Then I obeyed 

and I did, and I enjoyed it. In fact, each time I am alone and the weather 

is stable, I land dead-stick. A while ago, I told that to the Jabiru Engine 

list. There, I got the opposite reaction. I was told that it was dangerous 

to cut out a perfectly running engine and that I could try dead-stick with 

the engine at idle.

Now, I am confused and I don't know if I should or I should not.

Cheers,

Michel

do not archive

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Michel

Joined: 10 Jan 2006
Posts: 966
Location: Norway

Posted: Sat Dec 30, 2006 3:25 pm Post subject: Michel Fabic tearing topic

On Dec 29, 2006, at 8:46 PM, dave wrote:

 	  Quote: 	
		   Only conern that I personally would have on the Jabiru is that it is 

 air cooled and potential shock cooling could certainly be a 

 possibility.  Do you use a winter front in colder temps ?


	


Shock cooling is also my concern, Dave, and that's why I only do 

dead-stick landings as full-stop landings and never touch-and-go. In 

the winter, I remove the oil cooler. That's what my Jabiru agent told 

me they were doing in Norway. But I still have a rather cool CHT and 

oil so I intend to build a cowl flap. I already did that last year but 

without any success. The air outlet was much smaller but the quantity 

of air passing was just as great, only faster. Now, I am playing with a 

different idea, inspired by Lynn's "sliding valve" and I think I am 

going to try it as soon as the weather (that a synonym for my wife!  

permits it.



Cheers,

Michel



do not archive

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