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dave

Joined: 22 Sep 2006
Posts: 1382

Posted: Mon Oct 09, 2006 8:09 am Post subject: Videos

Hi Guy,



What  did you think of that video I posted last week ?

I have been away, yet  it has been downloaded a few hundred times and yet no 

one has responded

I surely hope it will be of some help for you to get your Kitfox flying with 

excellent short field performance.

I did that basically for you to show you how  3 other simular planes perform

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wingnut

Joined: 11 Jan 2006
Posts: 356

Posted: Mon Oct 09, 2006 8:54 am Post subject: Re: Videos

 	  Quote: 	
		  What did you think of that video I posted last week ? 	




Could you pleas post some details for the uninformed? Where would I download this video?



-Luis

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smokey_bear_40220(at)yaho
Guest

Posted: Mon Oct 09, 2006 10:33 am Post subject: Videos

Well Dave,



If no one else says so, I liked them enough to keep 

on my computer.  



I timed the takeoffs as best as I could to compare to

mine, since I don't know the distances from your vid. 

My S-5 takes about 8 seconds to lift off normally.  I

haven't tried any really short field techniques yet. 

Mostly afraid my NSI will pull it over on its nose, if

I push the power up too much before brake release. 

That 8 seconds puts me about where your first plane

was in the vid and between the other 2.  Couldn't

really tell where the Avid lifted off due to the tree.



Thanks for the vid,



Kurt S.



--- Dave <dave(at)cfisher.com> wrote:



 	  Quote: 	
		   Hi Guy,

 

 What did you think of that video I posted last week?

 I have been away, yet it has been downloaded a few

 hundred times and yet no one has responded

 I surely hope it will be of some help for you to get

 your Kitfox flying with excellent short field

 performance.

 I did that basically for you to show you how 3

 other simular planes perform 


	


 	  Quote: 	
		   Dave


	


__________________________________________________

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Guy Buchanan

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

Posted: Mon Oct 09, 2006 1:18 pm Post subject: Videos

At 09:09 AM 10/9/2006, you wrote:

 	  Quote: 	
		  What  did you think of that video I posted last week ?


	


I liked the video, if only because it's great to see Kitfox's in action!



I just got back to minimum weight configuration, after doing all my gross 

weight testing. I like Kurt's idea of comparing timing so I think I'll give 

that a try. I went out and paced the field to make sure I wasn't screwed up 

in my calculations and re-assured myself that there's no way I'm getting 

off in 200' without a serious headwind or some flaps or both; and you're 

doing it on grass!



I downloaded the JC Propeller software to see if I could optimize my prop 

and it wants me to increase my pitch to 13 degrees at the tip so I may try 

that. That's certainly not going to decrease my takeoff roll, though it 

might increase my cruise. One thing that's strange, though, is that the 

software doesn't think I should have much of a speed variation between a 

cruise at 65hp / 6500rpm and 58hp / 5800rpm. To me the variation should be 

linear with rpm, so that if I run 92mph at 6500 I will see 82mph at 5800.

Guy Buchanan

K-IV 1200 / 582-C / Warp / 100% done, thanks mostly to Bob Ducar.

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

wingnut

Joined: 11 Jan 2006
Posts: 356

Posted: Mon Oct 09, 2006 1:38 pm Post subject: Re: Videos

Got to see the video in question by looking up Dave's history. Very cool. Can't wait to try out some grass fields in my area. 



 	  Quote: 	
		  

To me the variation should be linear with rpm, so that if I run 92mph at 6500 I will see 82mph at 5800. 	


Perhapse this is because wind resistance is not linear with speed.

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dave

Joined: 22 Sep 2006
Posts: 1382

Posted: Mon Oct 09, 2006 4:19 pm Post subject: Videos

Hi ,

I put a link up last week of a video we did of three Planes last week here 

http://www.cfisher.com/kitfox/coffeebreak.wmv



Here is original mesage..........



---

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dave

Joined: 22 Sep 2006
Posts: 1382

Posted: Mon Oct 09, 2006 4:59 pm Post subject: Videos

Guy,



I get about 6100 static and 6800   WOT



I went  for breakfast this am about   45 mins each way  right near  Sarnia, 

Ontario -- ( That is Across River from Port Huron, Michigan. )

I average about 86-87 mph TAS at 5800 rpm and that about 18 litres a hour 

( about 4.5 US gals)



I Took off in 5 to 7 knot head wind and was airbourne in about 75 to 100 

feet solo with 12 gals gas on board .



I don't think a higher static rpm will improve much but even if it did  then 

you might be too fine in cruise ands have to deal with high EGTs....

Sure you can play with jetting etc but the gain will be small.



I will  try to get some more videos done later this fall and if we get 

enough guy to  do it maybe make a deent clip on many kitfoxes flying.  ?

Dave

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