Kitfox-List Digest Archive

Fri 07/30/04


Total Messages Posted: 8



Today's Message Index:
----------------------
 
     1. 03:23 AM - SV: Tailwheel Troubles (Michel Verheughe)
     2. 03:37 AM - SV: "P" factor (Michel Verheughe)
     3. 04:12 AM - OT: News from the north (Michel Verheughe)
     4. 04:21 AM - Re: OT: News from the north (Mark Schindler)
     5. 10:38 AM - Re: Kitfox mk1 questions (again) (User)
     6. 05:00 PM - Re: SV: Tailwheel Troubles (Norm Beauchamp)
     7. 06:41 PM - Re: Prop shortening ()
     8. 10:18 PM - Re: Tailwheel Troubles (jimshumaker)
 
 
 


Message 1


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    Time: 03:23:56 AM PST US
    From: Michel Verheughe <michel@online.no>
    Subject: Tailwheel Troubles
    --> Kitfox-List message posted by: Michel Verheughe <michel@online.no> > From: jimshumaker [jimshumaker@sbcglobal.net] > locking out the freewheel release may prevent some inadvertant ground turns. How about this: On a Maule tailwheel, you remove the release plate. You make a hole in the releasing latch casing. You fix a wire to the latch, leaving, of course, the spring in place. You bring that wire through a teleflex (do you call it that?) then through the fuselage, as for the rudder, to the cockpit. On the ground, if you want to free-castor, you pull the wire from the cockpit. Fail-safe: If the wire breaks, the wheel is locked by the spring. My father used to tell me that, when he flew the DC-3, in order to e.g. backtrack, he had to release the locking mechanism, press a pedal and brake, and throttle with the outside engine only. Has anyone ever been thinking of a cockpit-released tailwheel for the Kitfox? Cheers, Michel


    Message 2


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    Time: 03:37:10 AM PST US
    From: Michel Verheughe <michel@online.no>
    Subject: "P" factor
    --> Kitfox-List message posted by: Michel Verheughe <michel@online.no> > From: kurt schrader [smokey_bear_40220@yahoo.com] > The Key phrase Michel is, "a little bit" as 10 degrees > is a little bit of 90 degrees. Oh, I am aware of that, Kurt. It went like this: I learnt about the P-Factor as being a difference of blade pitch. It was easy for me to picture the flow of air of a climbing plane and understand that the pitch, or rather, the AoA of the two blades would be different. Later, discussing with Austin Meyer, he explains that it is not the entire picture and that there is also the fact that one blade travels through the air faster than the other. That one was a bit harder to visualize but I think I got it now. When I wrote about it in my initial posting (which I didn't keep and I can't quote from) I thing I wrote something like "it is also affected by the speed of the air the blades are passing throught." I stand now corrected and I understand I should have wrote: "It is also a little bit affected by the speed of the air ..." Cheers, Michel do not archive


    Message 3


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    Time: 04:12:07 AM PST US
    From: Michel Verheughe <michel@online.no>
    Subject: OT: News from the north
    --> Kitfox-List message posted by: Michel Verheughe <michel@online.no> > From: Torgeir Mortensen [torgemor@online.no] > Hi Michel, > Long time.. long seen.. Hello Torgeir! Indeed, long time no see! In fact, I was about to write to you privately, wondering if everything was ok with you ... or maybe too ok, in the fine summer you have had up north. People, look at the north of Norway. Isn't that far north? Yesterday I read in the paper that somewhere in Finmark (the northern province) the sea temperature was ... 25 degrees Celsius! Wow! While we had a rotten summer (it has changed this last week) in the south, the north had the best they can remember for years. How can water reach 25 C up north? Well, the sun is low on the horizon but ... it doesn't go down at night. A little warming for a long time ... >from this site: > http://www.drag-on-fly.com/B263.html Thanks, Torgeir. A great site. I see there are still words I need to learn! Darn, when will it ever end? :-) Cheers, Michel do not archive


    Message 4


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    Time: 04:21:50 AM PST US
    From: Mark Schindler <mtschindler@yahoo.com>
    Subject: Re: OT: News from the north
    --> Kitfox-List message posted by: Mark Schindler <mtschindler@yahoo.com> I was on Spitzbergen in the middle of August - needless to say polar days to the max - but water temp was absolutly feezing. Mark Michel Verheughe <michel@online.no> wrote: --> Kitfox-List message posted by: Michel Verheughe > From: Torgeir Mortensen [torgemor@online.no] > Hi Michel, > Long time.. long seen.. Hello Torgeir! Indeed, long time no see! In fact, I was about to write to you privately, wondering if everything was ok with you ... or maybe too ok, in the fine summer you have had up north. People, look at the north of Norway. Isn't that far north? Yesterday I read in the paper that somewhere in Finmark (the northern province) the sea temperature was ... 25 degrees Celsius! Wow! While we had a rotten summer (it has changed this last week) in the south, the north had the best they can remember for years. How can water reach 25 C up north? Well, the sun is low on the horizon but ... it doesn't go down at night. A little warming for a long time ... >from this site: > http://www.drag-on-fly.com/B263.html Thanks, Torgeir. A great site. I see there are still words I need to learn! Darn, when will it ever end? :-) Cheers, Michel do not archive ---------------------------------


    Message 5


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    Time: 10:38:25 AM PST US
    From: "User" <paul@wilsonnet.flyer.co.uk>
    Subject: Re: Kitfox mk1 questions (again)
    --> Kitfox-List message posted by: "User" <paul@wilsonnet.flyer.co.uk> > Ray Kurian wrote: > > I realize you're in the UK, and this might not work for you. > > I asked my local Rotax agent and unfortunately it doesn't work for Norway. Thnks for the info., I called the UK Rotax distributor, and as you thought, it is not valid in the U.K. either Paul.


    Message 6


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    Time: 05:00:01 PM PST US
    From: Norm Beauchamp <nebchmp@wcc.net>
    Subject: Re: Tailwheel Troubles
    --> Kitfox-List message posted by: Norm Beauchamp <nebchmp@wcc.net> Good idea Michel. I had taken the plate off , but had to realease the catch if I was turning pushing the acft. by hand. A cockpit release, I like the idea. Norm Michel Verheughe wrote: >--> Kitfox-List message posted by: Michel Verheughe <michel@online.no> > > > >>From: jimshumaker [jimshumaker@sbcglobal.net] >>locking out the freewheel release may prevent some inadvertant ground turns. >> >> > >How about this: On a Maule tailwheel, you remove the release plate. You make a hole in the releasing latch casing. You fix a wire to the latch, leaving, of course, the spring in place. You bring that wire through a teleflex (do you call it that?) then through the fuselage, as for the rudder, to the cockpit. On the ground, if you want to free-castor, you pull the wire from the cockpit. Fail-safe: If the wire breaks, the wheel is locked by the spring. >My father used to tell me that, when he flew the DC-3, in order to e.g. backtrack, he had to release the locking mechanism, press a pedal and brake, and throttle with the outside engine only. > >Has anyone ever been thinking of a cockpit-released tailwheel for the Kitfox? > >Cheers, >Michel > > >


    Message 7


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    Time: 06:41:39 PM PST US
    From: <kirkhull@sbcglobal.net>
    Subject: Re: Prop shortening
    --> Kitfox-List message posted by: <kirkhull@sbcglobal.net> Even if you can cut ALL 3 blades down can you balance the assembly close enough to keep the engine in the airframe? there was an article in the July EAA Sport Pilot about props it might be worth reading. That said I personally would spend the $100.00 to get it done right > --> Kitfox-List message posted by: "Clem Nichols" <cnichols@scrtc.com> > > On a more practical note, any advice about shortening a Warp Drive prop? My last wheel landing was not my best, and I sustained damage to about 3/4 of an inch of the tip of one blade, and a tiny amount to another blade. I spoke with one of the people at Warp Drive about purchasing replacement blades. He thought that shortening the blades by no more than 3/4" would not have any significant effect on performance, and suggested going that route instead. He said the critical part was in cutting the metal leading edge so as to not separate it from the blade. He suggested cutting it (the metal leading edge) half way through from one side and the rest of the way from the other side. I was considering cutting the leading edge with a Dremel rotary tool and using a hack saw to cut the blade proper. Of course I can always send the blades to Warp Drive and have them shortened and balanced for about $100 plus shipping charges. New blades with the metal leading edge would run abou! > t $250 each. Original diameter 70" on an NSI Subaru EA 81 engine. Obviously I don't wish to spend money unnecessarily, but by the same token don't want to risk my life to save a few dollars. Advice appreciated. > > Clem Nichols > >


    Message 8


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    Time: 10:18:50 PM PST US
    From: "jimshumaker" <jimshumaker@sbcglobal.net>
    Subject: Re: Tailwheel Troubles
    --> Kitfox-List message posted by: "jimshumaker" <jimshumaker@sbcglobal.net> Great idea Michel. But it would add weight and work. To make it as useful as you describe in a previous post one need only add practice and skill. Jim Shumaker ----- Original Message ----- From: "Michel Verheughe" <michel@online.no> Subject: SV: Kitfox-List: Tailwheel Troubles > --> Kitfox-List message posted by: Michel Verheughe <michel@online.no> > > > From: jimshumaker [jimshumaker@sbcglobal.net] > > locking out the freewheel release may prevent some inadvertant ground turns. > > How about this: On a Maule tailwheel, you remove the release plate. You make a hole in the releasing latch casing. You fix a wire to the latch, leaving, of course, the spring in place. You bring that wire through a teleflex (do you call it that?) then through the fuselage, as for the rudder, to the cockpit. On the ground, if you want to free-castor, you pull the wire from the cockpit. Fail-safe: If the wire breaks, the wheel is locked by the spring. > My father used to tell me that, when he flew the DC-3, in order to e.g. backtrack, he had to release the locking mechanism, press a pedal and brake, and throttle with the outside engine only. > > Has anyone ever been thinking of a cockpit-released tailwheel for the Kitfox? > > Cheers, > Michel > >




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