REFLECTOR: elevator cuff was Brake authority

[Chuck Jensen]

Ron,
 
Thanks for the cuff description, I can visualize what you were
describing but since I don't have any, I was just curious.  I was
suffering from cuff-envy until I realized it was fashionable not to have
'em.
 
P.S.  Nice looking paint and trim job on the bird.  Now that its all
painted up, I'm surprised you haven't found anything that you want to
change!
 
Chuck Jensen 
 
 -----Original Message-----
From: reflector-bounces at tvbf.org [mailto:reflector-bounces at tvbf.org] On
Behalf Of Ron Brown
Sent: Monday, June 11, 2007 10:41 AM
To: Velocity Aircraft Owners and Builders list
Subject: Re: REFLECTOR: elevator cuff was Brake authority


Chuck,
 
Don't have a picture - but I can describe them.  It was a C shaped piece
that was installed on the leading edge of the Elevator - which reduces
the gap between the back of the canard and the elevator such that when
the elevator is down, the gap is reduced from what it would be if the
cuff wasn't there.
 
It was installed on the inner half, span wise of the elevator.
 
Ronnie   

	----- Original Message ----- 
	From: Chuck Jensen <mailto:cjensen at dts9000.com>  
	To: Velocity Aircraft Owners and Builders list
<mailto:reflector at tvbf.org>  
	Sent: Monday, June 11, 2007 10:10 AM
	Subject: Re: REFLECTOR: elevator cuff was Brake authority

	Does anyone have a photo of the "cuffs" that are being
discussed.  I'm not sure I've ever seen the cuffs on the Velo.  You're
welcome to email directly.
	 
	Chuck Jensen 
	 
	 -----Original Message-----
	From: reflector-bounces at tvbf.org
[mailto:reflector-bounces at tvbf.org] On Behalf Of Laurence Coen
	Sent: Friday, June 08, 2007 12:39 PM
	To: Velocity Aircraft Owners and Builders list
	Subject: Re: REFLECTOR: elevator cuff was Brake authority
	
	
	Al,
	 
	The way I understand it, the elevator cuffs were one of three
things done to address the deep stall problem.  Your current main wing
was redesigned and the canard was shortened.  The cuffs are no longer
needed.  They were a modification for existing Velocities at that time.
I received cuffs with my kit but never installed them.  Their purpose is
to increase the stall speed of the elevator which would explain your
high stall speed.
	 
	Larry Coen
	N136LC

		----- Original Message ----- 
		From: Al Gietzen <mailto:ALVentures at cox.net>  
		To: 'Velocity Aircraft Owners and Builders list'
<mailto:reflector at tvbf.org>  
		Sent: Thursday, June 07, 2007 11:34 AM
		Subject: Re: REFLECTOR: Brake authority


		 

		I concur with Larry - 10KIAS makes a big difference.

		My canard stalls at 60KIAS with just me, 65KIAS with

		two people up front.

		 

		I still have about half the width of the elevator cuff
on the elevators. It gives a very gentle pitch-buck at stall, I've never
felt a lack of elevator authority; and I never have full aft stick on
landing.  However; would removing the rest of the cuff reduce the stall
speed?

		 

		I have my ground idle set to about 500 RPMs (Lyc

		IO-540 with two mags) which is pretty much as slow as

		it will run

		 

		My engine idle is about 850; that's about 210 rpm on the
prop.

		 

		Al

		
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