REFLECTOR: amount of trim
steve korney
s_korney at hotmail.com
Mon Nov 10 18:28:42 CST 2008
John...
I left the brackets on the elevator and just reversed the sparrow strainer, so the brackets are still on the bottom of the elevator.... The old style sparrow strainer had the bracket mounted solid to the elevator and screws held the wing of the sparrow strainer between the brackets....
Best... Steve
Date: Mon, 10 Nov 2008 09:29:55 -0600
From: aminetech at bluefrog.com
To: reflector at tvbf.org
Subject: Re: REFLECTOR: amount of trim
Whole thing.
nmflyer1 at aol.com wrote:
John,
Are you just reversing the airfoil on the sparrow strainer or are you
reversing the whole thing?
Kurt
-----Original Message-----
From: John Dibble <aminetech at bluefrog.com>
To: Velocity Aircraft Owners and Builders list <reflector at tvbf.org>
Sent: Mon, 10 Nov 2008 7:42 am
Subject: Re: REFLECTOR: amount of trim
When installed
per the factory recommendation, the sparrow exerts a downward force on
the elevator, which must be countered by the trim spring. The faster
you fly, the greater the force. That's why you run out of trim at
high speeds (IAS). When reversed, the sparrow exerts an upward force,
working with the trim spring, significantly expanding trim capability.
Actually, at the risk of complicating this, I believe the sparrow,
in the reversed position provides more than the necessary force to overcome
the force of the airstream on the elevator and the trim spring is actually
now exerting a downward force on the elevator, but I don't know how to
prove that.JohnLou Stedman wrote:
Thanks John.
I always like to have friends drop by but. I am a bit confused, why would
I reverse the sparrow? I am not knogleable on that subject.
Lou Stedman
Velocity N7044Q
Olean, NY
----- Original Message -----
From:
John
Dibble
To: Velocity
Aircraft Owners and Builders list
Sent: Monday, November 10, 2008 7:28
AM
Subject: Re: REFLECTOR: amount of
trim
Lou,I had the same problem as you. Right now I'm at the new
Dundee airport 17NK. If you're interested I can stop by and you can
fly with me and see that reversing the sparrow strainer has no effect on
stability.JohnLou Stedman wrote:
Thanks Gary. Mine
is a little different. When I am solo, I don't have enough down trim. I
did a new W&B and found out I need thirty pounds of ballast in the
nose when solo. That helps a lot with needed down trim but I can't help
but think I need some down trim. What model are you flying?
Lou Stedman
Velocity N7044Q
Olean, NY
----- Original Message -----
From:
Gary
Stull
To: Velocity
Aircraft Owners and Builders list
Sent: Sunday, November 09, 2008 10:17
PM
Subject: Re: REFLECTOR: amount of
trim
I have much more up then down trim.
In my case I never need any down trim even flying solo, always some up
trim required.
----- Original Message -----
From:
Lou
Stedman
To: Reflector
Velocity
Sent: Friday, November 07, 2008 5:20
PM
Subject: REFLECTOR: amount of trim
I have looked through my manual
but do not find information on how much up and down trim I am suppose to
have. It does say that the elevator should have 24-26 degrees of down and
20 degrees of up. But it does not mention anything about trim. Can someone
shed some light on this? I have lots of up trim but almost no down trim.
Lou Stedman
Velocity N7044Q
Olean, NY
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