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Author Topic: Leadouts over/under  (Read 2659 times)

Offline RogerGreene

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Leadouts over/under
« on: November 18, 2014, 07:46:35 AM »
What is the aerodynamic thought about having the leadouts over/under i.e. Bob Palmer's Thunderbird. Where up is on the bottom and down is on the top. I would make each adjustable, horizontally.

Any thought?

Roger 
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Online Paul Smith

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Re: Leadouts over/under
« Reply #1 on: November 18, 2014, 02:16:30 PM »
It seems like a good idea if your style involves hanging the plane from one line in extreme manovers.  If you hang by one line it would be nice to have the lines come out together.  But if you fly with tension on both lines I do not see any benefit from the up or down line being fore or aft.

I like to have the leadouts places so there is little or no bending and/or binding action on the leadout guides.
Paul Smith

Offline RogerGreene

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Re: Leadouts over/under
« Reply #2 on: November 19, 2014, 07:51:44 AM »
Thanks Paul.
Fly Stunt <><
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USAF Veteran 1962-66 SAC
Life is 10% what happens to you and 90% of how you react to it. FAA #FA3RFLPAN7

Offline Brett Buck

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Re: Leadouts over/under
« Reply #3 on: November 19, 2014, 09:43:57 AM »
It seems like a good idea if your style involves hanging the plane from one line in extreme manovers.  If you hang by one line it would be nice to have the lines come out together.  But if you fly with tension on both lines I do not see any benefit from the up or down line being fore or aft.\

  You don't have to hang the airplane on one line. The same effect, to a lesser degree, happens any time you deflect the controls. Any time the controls are deflected, there is more tension on one line than the other, so the force applied to the leadout guide, it any, it higher on the "active" line.


    Brett

Offline Steve Helmick

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Re: Leadouts over/under
« Reply #4 on: November 25, 2014, 06:22:43 PM »
A certain 11 time NATS (and 1 time World) Champion used over/under leadouts on at least his first 4-cycle "PW-51 Mustang". But nothing since. That tells me all I need to know. He does use individual leadout adjusters for front/back, and says that makes a difference. I have no hope of ever being able to tell, but would probably do it anyway.  H^^ Steve
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Offline RogerGreene

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Re: Leadouts over/under
« Reply #5 on: November 26, 2014, 11:24:08 AM »
Thanks Steve, I will incorporate them on this winters build.

Roger
Fly Stunt <><
AMA 435R
USAF Veteran 1962-66 SAC
Life is 10% what happens to you and 90% of how you react to it. FAA #FA3RFLPAN7


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