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[rebel-builders] Elevator travel

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Robert Johnson

[rebel-builders] Elevator travel

Post by Robert Johnson » Sun Feb 19, 2012 11:30 am

Hi Charlie: From my experience you would never use even 17 deg. down unless
you plan to fly inverted, however the inspector may a least require what the
manual states. Bob J Rebel 192/731
----- Original Message -----
From: "Charlie Eubanks" <charlie@troyairpark.com>
To: <rebel-builders@dcsol.com>
Sent: Friday, December 22, 2006 9:42 AM
Subject: [rebel-builders] Elevator travel

Rebel builders

I just assembled for the first time the finished horizontal stab and the
elevators. I wanted to see how they looked assembled and check for free
rotation. The "up" elevator travel is free to move well past 45* but the
"down" travel is restricted to 17* due to interference with the bottom leg
of the main (rear) spar (ST-27) and the control horn (CC-43). At this
stage
of assembly HOW MUCH DOWN TRAVEL IS REQUIRED and what is the preferred
solution? Do I grind a small notch in the spar leg or the control horn or
a
little on both?



On the subject of elevator travel. I hope to build light enough to fly
under
the LSA Pilot Rules so when the aircraft is completely assembled what is
the
preferred up and down elevator travel? The only reference I can find in
the
manual is under CONTROL INSTALLATION 20.8 step 16. "Trim opening to allow
25* up and 25* down deflection of elevator".



Merry Christmas to all and Happy Holidays

Charlie E. 802R




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Mike Kimball

[rebel-builders] Elevator travel

Post by Mike Kimball » Sun Feb 19, 2012 11:30 am

Agreed. Unless you want to get that outside loop going you won't need
anywhere near 17 degrees down travel.

Mike

-----Original Message-----
From: mike.davis@dcsol.com [mailto:mike.davis@dcsol.com] On Behalf Of Robert
Johnson
Sent: Friday, December 22, 2006 6:27 AM
To: rebel-builders@dcsol.com
Subject: Re: [rebel-builders] Elevator travel

Hi Charlie: From my experience you would never use even 17 deg. down unless
you plan to fly inverted, however the inspector may a least require what the

manual states. Bob J Rebel 192/731
----- Original Message -----
From: "Charlie Eubanks" <charlie@troyairpark.com>
To: <rebel-builders@dcsol.com>
Sent: Friday, December 22, 2006 9:42 AM
Subject: [rebel-builders] Elevator travel

Rebel builders

I just assembled for the first time the finished horizontal stab and the
elevators. I wanted to see how they looked assembled and check for free
rotation. The "up" elevator travel is free to move well past 45* but the
"down" travel is restricted to 17* due to interference with the bottom leg
of the main (rear) spar (ST-27) and the control horn (CC-43). At this
stage
of assembly HOW MUCH DOWN TRAVEL IS REQUIRED and what is the preferred
solution? Do I grind a small notch in the spar leg or the control horn or
a
little on both?



On the subject of elevator travel. I hope to build light enough to fly
under
the LSA Pilot Rules so when the aircraft is completely assembled what is
the
preferred up and down elevator travel? The only reference I can find in
the
manual is under CONTROL INSTALLATION 20.8 step 16. "Trim opening to allow
25* up and 25* down deflection of elevator".



Merry Christmas to all and Happy Holidays

Charlie E. 802R




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Wayne G. O'Shea

[rebel-builders] Elevator travel

Post by Wayne G. O'Shea » Sun Feb 19, 2012 11:30 am

If you have intentions to fly on skis...then YES you want 25 degrees down if
you can get it.

I just went out and inspected the "fleet" in the hangar. Mine has 25 degrees
down measured at the elevator center line. If you use just the top surface
of the elevator then it would be 30 degrees.

Thanks to Horn placement I didn't need any stab spar modifications. On CYP
though we had to trim about 3/16 deep into the lower spar flange on the end
1/2" or so..... so the horn could swing far enough in for sufficient down
elevator. This trimming isn't going to effect structural integrity...just
don't get carried away!

Wayne

----- Original Message -----
From: "Charlie Eubanks" <charlie@troyairpark.com>
To: <rebel-builders@dcsol.com>
Sent: Friday, December 22, 2006 9:42 AM
Subject: [rebel-builders] Elevator travel

Rebel builders

I just assembled for the first time the finished horizontal stab and the
elevators. I wanted to see how they looked assembled and check for free
rotation. The "up" elevator travel is free to move well past 45* but the
"down" travel is restricted to 17* due to interference with the bottom leg
of the main (rear) spar (ST-27) and the control horn (CC-43). At this
stage
of assembly HOW MUCH DOWN TRAVEL IS REQUIRED and what is the preferred
solution? Do I grind a small notch in the spar leg or the control horn or
a
little on both?



On the subject of elevator travel. I hope to build light enough to fly
under
the LSA Pilot Rules so when the aircraft is completely assembled what is
the
preferred up and down elevator travel? The only reference I can find in
the
manual is under CONTROL INSTALLATION 20.8 step 16. "Trim opening to allow
25* up and 25* down deflection of elevator".



Merry Christmas to all and Happy Holidays

Charlie E. 802R




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Jesse Jenks

[rebel-builders] Elevator travel

Post by Jesse Jenks » Sun Feb 19, 2012 11:30 am

I've never flown a Rebel, but...
The difference between how much down elevator you need for normal
operations, and how much you might need in some emergency situation could be
the difference between life and death. The example I gave before was getting
rolled inverted by wake turbulence at low altitude, but surely there are
others. What if you forget to secure a heavy load in the baggage area, and
on climbout it slides back, tearing out the flimsy curtain on the way back
to the tail cone? Or maybe you just loaded your CG a little too far back,
knowing it will probably fly fine, only you screw up and get distracted in
the climbout, and get into a spin? Now you'll need every bit of elevator.
Jesse
From: Mike Kimball <mkimball@gci.net>
Reply-To: <rebel-builders@dcsol.com>
To: rebel-builders@dcsol.com
Subject: RE: [rebel-builders] Elevator travel
Date: Fri, 22 Dec 2006 11:54:57 -0900

Agreed. Unless you want to get that outside loop going you won't need
anywhere near 17 degrees down travel.

Mike

-----Original Message-----
From: mike.davis@dcsol.com [mailto:mike.davis@dcsol.com] On Behalf Of
Robert
Johnson
Sent: Friday, December 22, 2006 6:27 AM
To: rebel-builders@dcsol.com
Subject: Re: [rebel-builders] Elevator travel

Hi Charlie: From my experience you would never use even 17 deg. down unless
you plan to fly inverted, however the inspector may a least require what
the

manual states. Bob J Rebel 192/731
----- Original Message -----
From: "Charlie Eubanks" <charlie@troyairpark.com>
To: <rebel-builders@dcsol.com>
Sent: Friday, December 22, 2006 9:42 AM
Subject: [rebel-builders] Elevator travel

Rebel builders

I just assembled for the first time the finished horizontal stab and the
elevators. I wanted to see how they looked assembled and check for free
rotation. The "up" elevator travel is free to move well past 45* but the
"down" travel is restricted to 17* due to interference with the bottom
leg
of the main (rear) spar (ST-27) and the control horn (CC-43). At this
stage
of assembly HOW MUCH DOWN TRAVEL IS REQUIRED and what is the preferred
solution? Do I grind a small notch in the spar leg or the control horn
or
a
little on both?



On the subject of elevator travel. I hope to build light enough to fly
under
the LSA Pilot Rules so when the aircraft is completely assembled what is
the
preferred up and down elevator travel? The only reference I can find in
the
manual is under CONTROL INSTALLATION 20.8 step 16. "Trim opening to
allow
25* up and 25* down deflection of elevator".



Merry Christmas to all and Happy Holidays

Charlie E. 802R




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