---------------------------------------------------------- RV-List Digest Archive --- Total Messages Posted Sat 12/20/08: 9 ---------------------------------------------------------- Today's Message Index: ---------------------- 1. 09:04 AM - RV-6A rudder trim tab (thomas sargent) 2. 09:42 AM - Re: RV-6A rudder trim tab (Richard Dudley) 3. 09:42 AM - Re: RV-6A rudder trim tab (Richard Seiders) 4. 09:44 AM - Fw: Re: RV-6A rudder trim tab (Richard Seiders) 5. 10:46 AM - Re: RV-6A rudder trim tab (linn Walters) 6. 10:49 AM - Re: RV-6A rudder trim tab (Rick Galati) 7. 02:33 PM - Re: Re: RV-6A rudder trim tab (jimmy) 8. 03:26 PM - Re: Re: RV-6A rudder trim tab (Larry Bowen) 9. 04:05 PM - Microair Transponder (Al Grajek) ________________________________ Message 1 _____________________________________ Time: 09:04:16 AM PST US From: thomas sargent Subject: RV-List: RV-6A rudder trim tab I am priming things. I gather that most planes have a small rectangle of sheet aluminum glued/taped to the trailing edge of the rudder and this is used to make a tiny trim adjustment to the rudder. I can't find a reference to this in my manual. Can some one advise me of the size of this this and what thickness is usually used for it? Thanks, ---Tom Sargent, RV-6A, almost ready for the color coat. ________________________________ Message 2 _____________________________________ Time: 09:42:08 AM PST US From: "Richard Dudley" Subject: Re: RV-List: RV-6A rudder trim tab Hi Tom, What worked for me was a balsa trailing edge for model airplanes purchased from a hobby shop. I used one about 1" wide attached with double stick foam tape. I started with one about 8" long and finally trimmed it to about 5-6" after several trials. I have seen wedges of various materials, attached in various ways on RVs. I am sure the length needed varies with the individual plane. So, it is an engineering experiment to adjust the length as needed until the plane flies with the ball in the center at cruise speed. It is a separate problem from a heavy wing correction. I used a balsa wedge from the same stick as my final rudder trim and painted it the color of the rudder. The foam tape was still intact after three years and 140 hours. Regards, Richard Dudley ----- Original Message ----- From: "thomas sargent" Sent: Saturday, December 20, 2008 12:01 PM Subject: RV-List: RV-6A rudder trim tab > > I am priming things. I gather that most planes have a small rectangle of > sheet aluminum glued/taped to the trailing edge of the rudder and this is > used to make a tiny trim adjustment to the rudder. I can't find a > reference to this in my manual. Can some one advise me of the size of > this this and what thickness is usually used for it? > > Thanks, > ---Tom Sargent, RV-6A, almost ready for the color coat. > > > ________________________________ Message 3 _____________________________________ Time: 09:42:21 AM PST US From: Richard Seiders Subject: Re: RV-List: RV-6A rudder trim tab Tom, most use balsa wood and size is determined by trial and error. Most I used are about 4 to 7" long by 1.5" wide. After trying in flight and size is determined attach it with JB Weld. and away you go. Dick RV6A > > I am priming things. I gather that most planes have a small >rectangle of sheet aluminum glued/taped to the trailing edge of the >rudder and this is used to make a tiny trim adjustment to the >rudder. I can't find a reference to this in my manual. Can some one >advise me of the size of this this and what thickness is usually used >for it? > >Thanks, >---Tom Sargent, RV-6A, almost ready for the color coat. > > ________________________________ Message 4 _____________________________________ Time: 09:44:54 AM PST US From: Richard Seiders Subject: Fwd: Re: RV-List: RV-6A rudder trim tab Oops. Make that a tapered pc of balsa starting at 1/8" and going to about 1/4" >Date: Sat, 20 Dec 2008 12:42:01 -0500 >To: rv-list@matronics.com >From: Richard Seiders >Subject: Re: RV-List: RV-6A rudder trim tab > >Tom, most use balsa wood and size is determined by trial and error. >Most I used are about 4 to 7" long by 1.5" wide. After trying in >flight and size is determined attach it with JB Weld. and away you go. >Dick RV6A >> >> I am priming things. I gather that most planes have a small >>rectangle of sheet aluminum glued/taped to the trailing edge of the >>rudder and this is used to make a tiny trim adjustment to the >>rudder. I can't find a reference to this in my manual. Can some one >>advise me of the size of this this and what thickness is usually used >>for it? >> >>Thanks, >>---Tom Sargent, RV-6A, almost ready for the color coat. >> >> ________________________________ Message 5 _____________________________________ Time: 10:46:07 AM PST US From: linn Walters Subject: Re: RV-List: RV-6A rudder trim tab Well, I can't really answer your question about the tab size. A fixed trim tab will only be truly effective at one certain airspeed ..... and is usually set for the cruising speed most used. I'm building a -10, and am going through the 'trim tab' scenario as we speak. There's been a few emails with pictures etc. on the -10 list about bungee (spring) trim systems .... some folks are really creative. I don't like those solutions, so I'm going to attach a hinged tab to the trailing edge of the rudder and move the tab with a model airplane servo. I'm in the process of creating the servo controller with a 555 timer in pulse width modulation mode. Linn do not archive thomas sargent wrote: > > I am priming things. I gather that most planes have a small > rectangle of sheet aluminum glued/taped to the trailing edge of the > rudder and this is used to make a tiny trim adjustment to the > rudder. I can't find a reference to this in my manual. Can some one > advise me of the size of this this and what thickness is usually used > for it? > > Thanks, > ---Tom Sargent, RV-6A, almost ready for the color coat. > > ________________________________ Message 6 _____________________________________ Time: 10:49:39 AM PST US Subject: RV-List: Re: RV-6A rudder trim tab From: "Rick Galati" Tom, A few years ago, I installed this simple wedge now sold by Avery. Trim its length in 1/8" increments and test fly until you are happy with the performance. Can be epoxied into place. My wedge is attached to the rudder with double sided carpet tape, works fine. http://www.averytools.com/pc-118-112-rudder-trim-tab.aspx Read this topic online here: http://forums.matronics.com/viewtopic.php?p=220318#220318 ________________________________ Message 7 _____________________________________ Time: 02:33:25 PM PST US From: "jimmy" Subject: Re: RV-List: Re: RV-6A rudder trim tab Why would you not want to use a small spring attached to the proper rudder pedal? Jimmy 8A ----- Original Message ----- From: "Rick Galati" Sent: Saturday, December 20, 2008 12:49 PM Subject: RV-List: Re: RV-6A rudder trim tab > > Tom, > A few years ago, I installed this simple wedge now sold by Avery. Trim > its length in 1/8" increments and test fly until you are happy with the > performance. Can be epoxied into place. My wedge is attached to the > rudder with double sided carpet tape, works fine. > > http://www.averytools.com/pc-118-112-rudder-trim-tab.aspx > > > Read this topic online here: > > http://forums.matronics.com/viewtopic.php?p=220318#220318 > > > ________________________________ Message 8 _____________________________________ Time: 03:26:23 PM PST US From: "Larry Bowen" Subject: Re: RV-List: Re: RV-6A rudder trim tab I tried that. Spring amount that was good at cruise was way too much at low speeds. I changed it out for the wedge. On 12/20/08, jimmy wrote: > > Why would you not want to use a small spring attached to the proper rudder > pedal? > > Jimmy > > 8A > ----- Original Message ----- > From: "Rick Galati" > To: > Sent: Saturday, December 20, 2008 12:49 PM > Subject: RV-List: Re: RV-6A rudder trim tab > > >> >> Tom, >> A few years ago, I installed this simple wedge now sold by Avery. Trim >> its length in 1/8" increments and test fly until you are happy with the >> performance. Can be epoxied into place. My wedge is attached to the >> rudder with double sided carpet tape, works fine. >> >> http://www.averytools.com/pc-118-112-rudder-trim-tab.aspx >> >> >> >> >> >> >> Read this topic online here: >> >> http://forums.matronics.com/viewtopic.php?p=220318#220318 >> >> >> >> >> >> >> >> >> >> > > -- -- Larry Bowen Larry@BowenAero.com http://BowenAero.com ________________________________ Message 9 _____________________________________ Time: 04:05:38 PM PST US From: Al Grajek Subject: RV-List: Microair Transponder I hav a Microair T2000SFL Transponder for sale. $1500 with harness! jetjocal@gmail.com ------------------------------------------------------------------------------------- Other Matronics Email List Services ------------------------------------------------------------------------------------- Post A New Message rv-list@matronics.com UN/SUBSCRIBE http://www.matronics.com/subscription List FAQ http://www.matronics.com/FAQ/RV-List.htm Web Forum Interface To Lists http://forums.matronics.com Matronics List Wiki http://wiki.matronics.com Full Archive Search Engine http://www.matronics.com/search 7-Day List Browse http://www.matronics.com/browse/rv-list Browse Digests http://www.matronics.com/digest/rv-list Browse Other Lists http://www.matronics.com/browse Live Online Chat! http://www.matronics.com/chat Archive Downloading http://www.matronics.com/archives Photo Share http://www.matronics.com/photoshare Other Email Lists http://www.matronics.com/emaillists Contributions http://www.matronics.com/contribution ------------------------------------------------------------------------------------- These Email List Services are sponsored solely by Matronics and through the generous Contributions of its members.