REFLECTOR: amount of trim
John Dibble
aminetech at bluefrog.com
Mon Nov 10 09:29:55 CST 2008
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
>> > --------------------------------------
>> >
>> >
>> > ______________________________________________
>> >
>> > To change your email address, visit
>> > http://www.tvbf.org/mailman/listinfo/reflectorVisit
>> > the gallery! www.tvbf.org/gallery
>> > user:pw = tvbf:jamaicangoose
>> > Check new archives:
>> > www.tvbf.org/pipermail
>> > Check old archives:
>> > http://www.tvbf.org/archives/velocity/maillist.html
>> >
>> > ------------------------------------------------
>> >
>> > _______________________________________________
>> >
>> > To change your email address, visit
>> > http://www.tvbf.org/mailman/listinfo/reflectorVisit
>> > the gallery! www.tvbf.org/gallery
>> > user:pw = tvbf:jamaicangoose
>> > Check new archives: www.tvbf.org/pipermail
>> > Check old archives:
>> > http://www.tvbf.org/archives/velocity/maillist.html
>> > ------------------------------------------------
>> >
>> > No virus found in this incoming message.
>> > Checked by AVG - http://www.avg.com
>> > Version: 8.0.175 / Virus Database: 270.9.0/1778
>> > - Release Date: 11/9/2008 2:14 PM
>> >
>> > ----------------------------------------------------
>> > _______________________________________________
>> > To change your email address, visit http://www.tvbf.org/mailman/listinfo/reflector
>> >
>> > Visit the gallery! www.tvbf.org/gallery
>> > user:pw = tvbf:jamaicangoose
>> > Check new archives: www.tvbf.org/pipermail
>> > Check old archives: http://www.tvbf.org/archives/velocity/maillist.html
>> >
>> > ----------------------------------------------------
>> >
>> > Internal Virus Database is out of date.
>> > Checked by AVG - http://www.avg.com
>> > Version: 8.0.175 / Virus Database: 270.8.5/1755 - Release Date: 10/29/2008 5:27 PM
>> >
>> >
>> -----------------------------------------------------------
>>
>> _______________________________________________
>> To change your email address, visit
>> http://www.tvbf.org/mailman/listinfo/reflectorVisit the
>> gallery! www.tvbf.org/gallery
>> user:pw = tvbf:jamaicangoose
>> Check new archives: www.tvbf.org/pipermail
>> Check old archives:
>> http://www.tvbf.org/archives/velocity/maillist.html
>> -----------------------------------------------------------
>>
>> No virus found in this incoming message.
>> Checked by AVG - http://www.avg.com
>> Version: 8.0.175 / Virus Database: 270.9.0/1779 - Release
>> Date: 11/10/2008 7:53 AM
>>
>> --------------------------------------------------------------
>> _______________________________________________
>> To change your email address, visit http://www.tvbf.org/mailman/listinfo/reflector
>>
>> Visit the gallery! www.tvbf.org/gallery
>> user:pw = tvbf:jamaicangoose
>> Check new archives: www.tvbf.org/pipermail
>> Check old archives: http://www.tvbf.org/archives/velocity/maillist.html
>>
>> --------------------------------------------------------------
>>
>> Internal Virus Database is out of date.
>> Checked by AVG - http://www.avg.com
>> Version: 8.0.175 / Virus Database: 270.8.5/1755 - Release Date: 10/29/2008 5:27 PM
>>
>>
> _______________________________________________
> To change your email address, visit http://www.tvbf.org/mailman/listinfo/reflector
>
> Visit the gallery! www.tvbf.org/gallery
> user:pw = tvbf:jamaicangoose
> Check new archives: www.tvbf.org/pipermail
> Check old archives: http://www.tvbf.org/archives/velocity/maillist.html
>
> -----------------------------------------------------------------------
> Instant access to the latest & most popular FREE games while you
> browse with the Games Toolbar - Download Now!
>
> ----------------------------------------------------------------
> _______________________________________________
> To change your email address, visit
> http://www.tvbf.org/mailman/listinfo/reflector
>
> Visit the gallery! www.tvbf.org/gallery
> user:pw = tvbf:jamaicangoose
> Check new archives: www.tvbf.org/pipermail
> Check old archives:
> http://www.tvbf.org/archives/velocity/maillist.html
>
> ----------------------------------------------------------------
>
> Internal Virus Database is out of date.
> Checked by AVG - http://www.avg.com
> Version: 8.0.175 / Virus Database: 270.8.5/1755 - Release Date:
> 10/29/2008 5:27 PM
>
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: http://www.tvbf.org/mailman/private/reflector/attachments/20081110/0c26bc8d/attachment-0001.htm
More information about the Reflector
mailing list