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Thoughts on rudder trim needed?

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rparigor(at)suffolk.lib.n
Guest

Posted: Sun Jan 21, 2007 6:51 pm Post subject: Thoughts on rudder trim needed?

Our Monowheel XS with a 914 and Airmaster has both short and long wings.

Will have servo trim tab for roll on both.  Will fly short first for a

while.

I was wondering if I could get opinions on rudder trim.



Is it worth it to install inflight adjustable trim?



Or is it possible that somehow we managed to build an airframe where both

sets of wings would need no rudder trim? Flies straight in thermal soaring

mode with long wings, as well as heavy fast short wing flight.



Or if rudder trim is needed it is more of a fuse thing, and if needed a

double sticky tab is all that is needed and would work on both short and

long, and for the most part rudder trim is just not that speed sensative?



If there was a slight difference between short and long, a calibrated by

eyecrometer bend on tab, or added 1/2 of a flettner strip for a given wing

makes the most sense?



Anyone have an inflight adjustable rudder trim that they think is a great

feature? Like have an airplane that at different speeds requires different

rudder trim and being able to adjust just adds to the pleasure of flyin?

If yes what is dimensions of trim tab you use with how much deflection?



Thx.

Ron Parigoris

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gcrowder2

Joined: 09 Jan 2006
Posts: 136
Location: Golden, Colorado USA

Posted: Sun Jan 21, 2007 7:05 pm Post subject: Thoughts on rudder trim needed?

I sure don't need rudder trim on mine.  Flies very straight at all speeds 

with no rudder

trim tab.  When I fly with a 200 lb passenger, I can just rest my left foot 

on the rudder

pedal to counteract small right roll tendency.  For long flights with a 

passenger, I have

a small bolt on rudder trim tab but I haven't even used it in 3 years.  Lots 

of extra

complication for no benefit!



                                                       Glenn



 	  Quote: 	
		  From: <rparigor(at)suffolk.lib.ny.us>

Reply-To: europa-list(at)matronics.com

To: <europa-list(at)matronics.com>

Subject: Thoughts on rudder trim needed?

Date: Mon, 22 Jan 2007 02:48:50 -0000






Our Monowheel XS with a 914 and Airmaster has both short and long wings.

Will have servo trim tab for roll on both.  Will fly short first for a

while.

I was wondering if I could get opinions on rudder trim.



Is it worth it to install inflight adjustable trim?



Or is it possible that somehow we managed to build an airframe where both

sets of wings would need no rudder trim? Flies straight in thermal soaring

mode with long wings, as well as heavy fast short wing flight.



Or if rudder trim is needed it is more of a fuse thing, and if needed a

double sticky tab is all that is needed and would work on both short and

long, and for the most part rudder trim is just not that speed sensative?



If there was a slight difference between short and long, a calibrated by

eyecrometer bend on tab, or added 1/2 of a flettner strip for a given wing

makes the most sense?



Anyone have an inflight adjustable rudder trim that they think is a great

feature? Like have an airplane that at different speeds requires different

rudder trim and being able to adjust just adds to the pleasure of flyin?

If yes what is dimensions of trim tab you use with how much deflection?



Thx.

Ron Parigoris


	


_________________________________________________________________

Turn searches into helpful donations. Make your search count. 

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Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:

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grahamsingleton(at)btinte
Guest

Posted: Mon Jan 22, 2007 9:54 am Post subject: Thoughts on rudder trim needed?

All you need for any trim is a Gurney Flap. Just a short piece of foam 

or balsa stuck under the trailing edge on one side to deflect that 

surface up, (or sideways if rudder)

Do a Google on Gurney flaps.

btw Your elevator trim tab has Gurney flaps both sides to cut through 

the boundary layer.

Graham



GLENN CROWDER wrote:

 	  Quote: 	
		   

 

 

  I sure don't need rudder trim on mine.  Flies very straight at all 

 speeds with no rudder

 trim tab.  When I fly with a 200 lb passenger, I can just rest my left 

 foot on the rudder

 pedal to counteract small right roll tendency.  For long flights with a 

 passenger, I have

 a small bolt on rudder trim tab but I haven't even used it in 3 years.  

 Lots of extra

 complication for no benefit!

 

                                                       Glenn

 

> From: <rparigor(at)suffolk.lib.ny.us>

> Reply-To: europa-list(at)matronics.com

> To: <europa-list(at)matronics.com>

> Subject: Thoughts on rudder trim needed?

> Date: Mon, 22 Jan 2007 02:48:50 -0000

>

> 

>

> Our Monowheel XS with a 914 and Airmaster has both short and long wings.

> Will have servo trim tab for roll on both.  Will fly short first for a

> while.

> I was wondering if I could get opinions on rudder trim.

>

> Is it worth it to install inflight adjustable trim?

>

> Or is it possible that somehow we managed to build an airframe where both

> sets of wings would need no rudder trim? Flies straight in thermal 

> soaring

> mode with long wings, as well as heavy fast short wing flight.

>

> Or if rudder trim is needed it is more of a fuse thing, and if needed a

> double sticky tab is all that is needed and would work on both short and

> long, and for the most part rudder trim is just not that speed sensative?

>

> If there was a slight difference between short and long, a calibrated by

> eyecrometer bend on tab, or added 1/2 of a flettner strip for a given 

> wing

> makes the most sense?

>

> Anyone have an inflight adjustable rudder trim that they think is a great

> feature? Like have an airplane that at different speeds requires 

> different

> rudder trim and being able to adjust just adds to the pleasure of flyin?

> If yes what is dimensions of trim tab you use with how much deflection?

>

> Thx.

> Ron Parigoris

 

 _________________________________________________________________

 Turn searches into helpful donations. Make your search count. 

 http://click4thecause.live.com/search/charity/default.aspx?source=hmemtagline_donation&FORM=WLMTAG 

 

 

 

 

 

 

 


	


-- 

Graham Singleton



Tel: +441629820187

Mob: +447739582005

- The Matronics Europa-List Email Forum -

Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:

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