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Tru Trak (RV-10) roll servo stop plate

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timrvator(at)comcast.net
Guest

Posted: Sat Jan 31, 2009 1:02 pm Post subject: Tru Trak (RV-10) roll servo stop plate

Tru Trak's RV-10 roll servo installation diagram is at 

<http://www.trutrakap.com/documents/RV10RollInstallation.pdf>.



In the first photo, item "F" is the servo stop plate.  That stop plate 

is held on by two little 6-32 screws, 1/4" long, which only engage about 

one thread (!) into the servo body (due to the short  1/4" length of the 

screws and the AN960-10 washer spacer called out in step F).  I'm not 

very comfortable with this arrangement.  Only a single thread engagement 

(1 turn of the screw) leaves me feeling there's risk of the screw 

stripping and/or backing out and leaving the stop plate not properly 

attached.  I don't like the picture of the stop plate rattling around 

where it can jam the aircraft roll control.



For those who have installed this system and gotten it flying, do you 

find that the stop plate is needed, or does the RV-10's aileron stop 

system keep the servo arm from running up to the stops provided by the 

servo's stop plate?   Have others taken steps to better secure the stop 

plate?



Thanks,



Tim



-- 

Tim Lewis -- HEF (Manassas, VA)

RV-6A N47TD -- 1000 hrs

RV-10 #40059 under construction

ninepapa(at)bendbroadband
Guest

Posted: Sat Jan 31, 2009 6:22 pm Post subject: Tru Trak (RV-10) roll servo stop plate

Tim



Thanks for mentioning this.

I just checked mine and I got two turns on those screws.

Another 1/8" or 1/4" would be better.



As I understand it, the stop plate is there to prevent any part of the 

linkage from going "over center".

This would cause the servo to lockup when it reverses, Not a Good Idea.



Check with Tru Track they might have longer screws.



John H



---

LarryRosen

Joined: 16 Jan 2006
Posts: 415
Location: Medford, NJ

Posted: Sat Jan 31, 2009 7:43 pm Post subject: Tru Trak (RV-10) roll servo stop plate

Tim,

I cannot answer your question, but I looked at my installation (not yet 

flying) and I do not have the roll stop installed.  If you look at Tim 

Olson's installation and he also does not have the roll stop 

<http://www.myrv10.com/N104CD/wing/20041231/RV200412310044.html>,

but Deems does 

<http://www.deemsrv10.com/album/Sec%2020%20Bottom%20Wing%20Skin/slides/DSC02106.html>



Also, I do not have the stop installed on the pitch servo, but Tim Olson 

does 

<http://www.myrv10.com/N104CD/upgrades/20060816/RV200608160109.html>, 

but the Tru Trak RV-10 installation photos do not show it.  Deems does 

not have the pitch control stops installed 

<http://www.deemsrv10.com/album/Wiring/slides/DSC03209.html>



Now I am even more confused than usual.  I guess a call to Tru Trak on 

Monday is called for.



Larry Rosen

#356



Tim Lewis wrote:

 	  Quote: 	
		   



 Tru Trak's RV-10 roll servo installation diagram is at 

 <http://www.trutrakap.com/documents/RV10RollInstallation.pdf>.



 In the first photo, item "F" is the servo stop plate.  That stop plate 

 is held on by two little 6-32 screws, 1/4" long, which only engage 

 about one thread (!) into the servo body (due to the short  1/4" 

 length of the screws and the AN960-10 washer spacer called out in step 

 F).  I'm not very comfortable with this arrangement.  Only a single 

 thread engagement (1 turn of the screw) leaves me feeling there's risk 

 of the screw stripping and/or backing out and leaving the stop plate 

 not properly attached.  I don't like the picture of the stop plate 

 rattling around where it can jam the aircraft roll control.



 For those who have installed this system and gotten it flying, do you 

 find that the stop plate is needed, or does the RV-10's aileron stop 

 system keep the servo arm from running up to the stops provided by the 

 servo's stop plate?   Have others taken steps to better secure the 

 stop plate?



 Thanks,



 Tim

_________________
Larry Rosen
#40356
N205EN (reserved)
<http>

Tim Olson

Joined: 25 Jan 2007
Posts: 2881

Posted: Sun Feb 01, 2009 2:22 am Post subject: Tru Trak (RV-10) roll servo stop plate

Keep in mind that the photos on that first link are from 2004...2  

years before I flew.  Somewhere in early Feb 2006 you should see an  

update where I added the stops, as the new kit of parts came out.   

Either right before or right after first flight, I had to redo the  

aileron servo linkages with new parts because the added the stops.  I  

think they had incidents of jammed aileron servos due to linkage  

travelling to far, so they made length changes and hard stops.  I  

would absolutely add the stops.  Although, I don't remember the screw  

length being an issue at that time.  I'd call them and ask how long  

you can use and then report back here for your RV10 buds.

Tim



On Jan 31, 2009, at 9:18 PM, Larry Rosen <N205EN(at)gmail.com> wrote:



 	  Quote: 	
		   



 Tim,

 I cannot answer your question, but I looked at my installation (not  

 yet flying) and I do not have the roll stop installed.  If you look  

 at Tim Olson's installation and he also does not have the roll stop <http://www.myrv10.com/N104CD/wing/20041231/RV200412310044.html 

 >,

 but Deems does <http://www.deemsrv10.com/album/Sec%2020%20Bottom%20Wing%20Skin/slides/DSC02106.html 

 >



 Also, I do not have the stop installed on the pitch servo, but Tim  

 Olson does <http://www.myrv10.com/N104CD/upgrades/20060816/RV200608160109.html 

 >, but the Tru Trak RV-10 installation photos do not show it.  Deems  

 does not have the pitch control stops installed <http://www.deemsrv10.com/album/Wiring/slides/DSC03209.html 

 >



 Now I am even more confused than usual.  I guess a call to Tru Trak  

 on Monday is called for.



 Larry Rosen

 #356



 Tim Lewis wrote:

> 

>

> Tru Trak's RV-10 roll servo installation diagram is at <http://www.trutrakap.com/documents/RV10RollInstallation.pdf 

> >.

>

> In the first photo, item "F" is the servo stop plate.  That stop  

> plate is held on by two little 6-32 screws, 1/4" long, which only  

> engage about one thread (!) into the servo body (due to the short   

> 1/4" length of the screws and the AN960-10 washer spacer called out  

> in step F).  I'm not very comfortable with this arrangement.  Only  

> a single thread engagement (1 turn of the screw) leaves me feeling  

> there's risk of the screw stripping and/or backing out and leaving  

> the stop plate not properly attached.  I don't like the picture of  

> the stop plate rattling around where it can jam the aircraft roll  

> control.

>

> For those who have installed this system and gotten it flying, do  

> you find that the stop plate is needed, or does the RV-10's aileron  

> stop system keep the servo arm from running up to the stops  

> provided by the servo's stop plate?   Have others taken steps to  

> better secure the stop plate?

>

> Thanks,

>

> Tim

>

timrvator(at)comcast.net
Guest

Posted: Sun Feb 01, 2009 6:29 am Post subject: Tru Trak (RV-10) roll servo stop plate

It looks like Tim Olson used the hardware from 

<http://www.trutrakap.com/documents/RV-710RightWing.pdf>.  This setup 

doesn't use the "RV-10 Attach Plate" called out in step "c" of  

<http://www.trutrakap.com/documents/RV10RollInstallation.pdf>. 



Alex De Dominicis told me the RV-10 Attach Plate is essentially a torque 

enhancer for more autopilot authority in rough air.



Tim



-- 

Tim Lewis -- HEF (Manassas, VA)

RV-6A N47TD -- 1000 hrs

RV-10 #40059 under construction



Larry Rosen wrote:

 	  Quote: 	
		   



 Tim,

 I cannot answer your question, but I looked at my installation (not 

 yet flying) and I do not have the roll stop installed.  If you look at 

 Tim Olson's installation and he also does not have the roll stop 

 <http://www.myrv10.com/N104CD/wing/20041231/RV200412310044.html>,

 but Deems does 

 <http://www.deemsrv10.com/album/Sec%2020%20Bottom%20Wing%20Skin/slides/DSC02106.html> 

 Also, I do not have the stop installed on the pitch servo, but Tim 

 Olson does 

 <http://www.myrv10.com/N104CD/upgrades/20060816/RV200608160109.html>, 

 but the Tru Trak RV-10 installation photos do not show it.  Deems does 

 not have the pitch control stops installed 

 <http://www.deemsrv10.com/album/Wiring/slides/DSC03209.html>



 Now I am even more confused than usual.  I guess a call to Tru Trak on 

 Monday is called for.



 Larry Rosen

 #356



 Tim Lewis wrote:

> 

>

> Tru Trak's RV-10 roll servo installation diagram is at 

> <http://www.trutrakap.com/documents/RV10RollInstallation.pdf>.

>

> In the first photo, item "F" is the servo stop plate.  That stop 

> plate is held on by two little 6-32 screws, 1/4" long, which only 

> engage about one thread (!) into the servo body (due to the short  

> 1/4" length of the screws and the AN960-10 washer spacer called out 

> in step F).  I'm not very comfortable with this arrangement.  Only a 

> single thread engagement (1 turn of the screw) leaves me feeling 

> there's risk of the screw stripping and/or backing out and leaving 

> the stop plate not properly attached.  I don't like the picture of 

> the stop plate rattling around where it can jam the aircraft roll 

> control.

>

> For those who have installed this system and gotten it flying, do you 

> find that the stop plate is needed, or does the RV-10's aileron stop 

> system keep the servo arm from running up to the stops provided by 

> the servo's stop plate?   Have others taken steps to better secure 

> the stop plate?

>

> Thanks,

>

> Tim

>

Tim Olson

Joined: 25 Jan 2007
Posts: 2881

Posted: Sun Feb 01, 2009 6:29 am Post subject: Tru Trak (RV-10) roll servo stop plate

Here is a link to just before first flight time, when I changed the

linkage and added the stops...they had just come out that week

I think.

http://www.myrv10.com/N104CD/finishing/20060208/index.html

Tim



Larry Rosen wrote:

 	  Quote: 	
		   

 

 Tim,

 I cannot answer your question, but I looked at my installation (not yet 

 flying) and I do not have the roll stop installed.  If you look at Tim 

 Olson's installation and he also does not have the roll stop 

 <http://www.myrv10.com/N104CD/wing/20041231/RV200412310044.html>,

 but Deems does 

 <http://www.deemsrv10.com/album/Sec%2020%20Bottom%20Wing%20Skin/slides/DSC02106.html> 

 

 

 Also, I do not have the stop installed on the pitch servo, but Tim Olson 

 does 

 <http://www.myrv10.com/N104CD/upgrades/20060816/RV200608160109.html>, 

 but the Tru Trak RV-10 installation photos do not show it.  Deems does 

 not have the pitch control stops installed 

 <http://www.deemsrv10.com/album/Wiring/slides/DSC03209.html>

 

 Now I am even more confused than usual.  I guess a call to Tru Trak on 

 Monday is called for.

 

 Larry Rosen

 #356

 

 Tim Lewis wrote:

> 

>

> Tru Trak's RV-10 roll servo installation diagram is at 

> <http://www.trutrakap.com/documents/RV10RollInstallation.pdf>.

>

> In the first photo, item "F" is the servo stop plate.  That stop plate 

> is held on by two little 6-32 screws, 1/4" long, which only engage 

> about one thread (!) into the servo body (due to the short  1/4" 

> length of the screws and the AN960-10 washer spacer called out in step 

> F).  I'm not very comfortable with this arrangement.  Only a single 

> thread engagement (1 turn of the screw) leaves me feeling there's risk 

> of the screw stripping and/or backing out and leaving the stop plate 

> not properly attached.  I don't like the picture of the stop plate 

> rattling around where it can jam the aircraft roll control.

>

> For those who have installed this system and gotten it flying, do you 

> find that the stop plate is needed, or does the RV-10's aileron stop 

> system keep the servo arm from running up to the stops provided by the 

> servo's stop plate?   Have others taken steps to better secure the 

> stop plate?

>

> Thanks,

>

> Tim

>

kdbelue(at)charter.net
Guest

Posted: Sun Feb 01, 2009 9:23 am Post subject: Tru Trak (RV-10) roll servo stop plate

I think it is very important to install the servo stop plates. The  

servo is capable of driving itself too far and get in a position that  

will lock the controls if the plates are not installed. I didn't think  

they were important when I watched the linkage and moved the controls  

to the stops, but when I moved the servo arm itself, I could get it  

into a locked position. Be careful!



Kevin Belue

RV6A

RV10 flying



Sent from my iPhone



On Jan 31, 2009, at 9:18 PM, Larry Rosen <N205EN(at)gmail.com> wrote:



 	  Quote: 	
		   



 Tim,

 I cannot answer your question, but I looked at my installation (not  

 yet flying) and I do not have the roll stop installed.  If you look  

 at Tim Olson's installation and he also does not have the roll stop <http://www.myrv10.com/N104CD/wing/20041231/RV200412310044.html 

 >,

 but Deems does <http://www.deemsrv10.com/album/Sec%2020%20Bottom%20Wing%20Skin/slides/DSC02106.html 

 >



 Also, I do not have the stop installed on the pitch servo, but Tim  

 Olson does <http://www.myrv10.com/N104CD/upgrades/20060816/RV200608160109.html 

 >, but the Tru Trak RV-10 installation photos do not show it.  Deems  

 does not have the pitch control stops installed <http://www.deemsrv10.com/album/Wiring/slides/DSC03209.html 

 >



 Now I am even more confused than usual.  I guess a call to Tru Trak  

 on Monday is called for.



 Larry Rosen

 #356



 Tim Lewis wrote:

> 

>

> Tru Trak's RV-10 roll servo installation diagram is at <http://www.trutrakap.com/documents/RV10RollInstallation.pdf 

> >.

>

> In the first photo, item "F" is the servo stop plate.  That stop  

> plate is held on by two little 6-32 screws, 1/4" long, which only  

> engage about one thread (!) into the servo body (due to the short   

> 1/4" length of the screws and the AN960-10 washer spacer called out  

> in step F).  I'm not very comfortable with this arrangement.  Only  

> a single thread engagement (1 turn of the screw) leaves me feeling  

> there's risk of the screw stripping and/or backing out and leaving  

> the stop plate not properly attached.  I don't like the picture of  

> the stop plate rattling around where it can jam the aircraft roll  

> control.

>

> For those who have installed this system and gotten it flying, do  

> you find that the stop plate is needed, or does the RV-10's aileron  

> stop system keep the servo arm from running up to the stops  

> provided by the servo's stop plate?   Have others taken steps to  

> better secure the stop plate?

>

> Thanks,

>

> Tim

>

timrvator(at)comcast.net
Guest

Posted: Sun Feb 01, 2009 12:49 pm Post subject: Tru Trak (RV-10) roll servo stop plate

Thanks for all the replies.  Good info.



I sent an email to Tru Trak asking about longer screws.  I'll let you 

know what I hear.  The screw max length will be a consideration, due to 

the moving pieces inside the servo that are right behind the screw 

holes.  You can actually see movement of an interior servo part through 

the screw hole.



Thanks,



Tim



-- 

Tim Lewis -- HEF (Manassas, VA)

RV-6A N47TD -- 1000 hrs

RV-10 #40059 under construction



Tim Olson wrote:

 	  Quote: 	
		   



 Keep in mind that the photos on that first link are from 2004...2 

 years before I flew.  Somewhere in early Feb 2006 you should see an 

 update where I added the stops, as the new kit of parts came out.  

 Either right before or right after first flight, I had to redo the 

 aileron servo linkages with new parts because the added the stops.  I 

 think they had incidents of jammed aileron servos due to linkage 

 travelling to far, so they made length changes and hard stops.  I 

 would absolutely add the stops.  Although, I don't remember the screw 

 length being an issue at that time.  I'd call them and ask how long 

 you can use and then report back here for your RV10 buds.

 Tim



 On Jan 31, 2009, at 9:18 PM, Larry Rosen <N205EN(at)gmail.com> wrote:



> 

>

> Tim,

> I cannot answer your question, but I looked at my installation (not 

> yet flying) and I do not have the roll stop installed.  If you look 

> at Tim Olson's installation and he also does not have the roll stop 

> <http://www.myrv10.com/N104CD/wing/20041231/RV200412310044.html>,

> but Deems does 

> <http://www.deemsrv10.com/album/Sec%2020%20Bottom%20Wing%20Skin/slides/DSC02106.html> 

> Also, I do not have the stop installed on the pitch servo, but Tim 

> Olson does 

> <http://www.myrv10.com/N104CD/upgrades/20060816/RV200608160109.html>, 

> but the Tru Trak RV-10 installation photos do not show it.  Deems 

> does not have the pitch control stops installed 

> <http://www.deemsrv10.com/album/Wiring/slides/DSC03209.html>

>

> Now I am even more confused than usual.  I guess a call to Tru Trak 

> on Monday is called for.

>

> Larry Rosen

> #356

>

> Tim Lewis wrote:

>> 

>>

>> Tru Trak's RV-10 roll servo installation diagram is at 

>> <http://www.trutrakap.com/documents/RV10RollInstallation.pdf>.

>>

>> In the first photo, item "F" is the servo stop plate.  That stop 

>> plate is held on by two little 6-32 screws, 1/4" long, which only 

>> engage about one thread (!) into the servo body (due to the short  

>> 1/4" length of the screws and the AN960-10 washer spacer called out 

>> in step F).  I'm not very comfortable with this arrangement.  Only a 

>> single thread engagement (1 turn of the screw) leaves me feeling 

>> there's risk of the screw stripping and/or backing out and leaving 

>> the stop plate not properly attached.  I don't like the picture of 

>> the stop plate rattling around where it can jam the aircraft roll 

>> control.

>>

>> For those who have installed this system and gotten it flying, do 

>> you find that the stop plate is needed, or does the RV-10's aileron 

>> stop system keep the servo arm from running up to the stops provided 

>> by the servo's stop plate?   Have others taken steps to better 

>> secure the stop plate?

>>

>> Thanks,

>>

>> Tim

>>

>

>

Tim Olson

Joined: 25 Jan 2007
Posts: 2881

Posted: Sun Feb 01, 2009 1:11 pm Post subject: Tru Trak (RV-10) roll servo stop plate

And again, just so people don't get confused, no, when I built it

BEFORE flying by a couple years, there hadn't been such a torque

enhancing plate.  But, the week or so before I flew, they sent me

the parts and it all got changed out.  So yes, today, and ever since

first flight, I've had the torque enhancing plate.  That's the

problem with reading a book....if you don't read to the end, you

don't know what totally happened.



Shows the day I modified the aileron servo:

http://www.myrv10.com/N104CD/finishing/20060208/index.html



I've never had the opportunity to fly without it.



Tim



Tim Lewis wrote:

 	  Quote: 	
		   

 

 It looks like Tim Olson used the hardware from 

 <http://www.trutrakap.com/documents/RV-710RightWing.pdf>.  This setup 

 doesn't use the "RV-10 Attach Plate" called out in step "c" of  

 <http://www.trutrakap.com/documents/RV10RollInstallation.pdf>.

 Alex De Dominicis told me the RV-10 Attach Plate is essentially a torque 

 enhancer for more autopilot authority in rough air.

 

 Tim

Tim Olson

Joined: 25 Jan 2007
Posts: 2881

Posted: Sun Feb 01, 2009 1:39 pm Post subject: Tru Trak (RV-10) roll servo stop plate

One thing to consider if they won't let you go with longer screws

is  using loctite on them once you fix it in a position you are

happy with.  It would be better than having it come apart.



Tim Olson - RV-10 N104CD - Flying



Tim Lewis wrote:

 	  Quote: 	
		   

 

 Thanks for all the replies.  Good info.

 

 I sent an email to Tru Trak asking about longer screws.  I'll let you 

 know what I hear.  The screw max length will be a consideration, due to 

 the moving pieces inside the servo that are right behind the screw 

 holes.  You can actually see movement of an interior servo part through 

 the screw hole.

 

 Thanks,

 

 Tim

LarryRosen

Joined: 16 Jan 2006
Posts: 415
Location: Medford, NJ

Posted: Tue Feb 03, 2009 10:12 am Post subject: Tru Trak (RV-10) roll servo stop plate

I spoke with Zack from Tru Trak today.  The control stop is not 

necessary on the RV 10 pitch servo because of the way the torque 

enhancer works.  You will not be able to lock up the servo.

However, it is part of there recommended install for the roll servo.  

They do want the screws to be as short as practical.  If they are too 

long they will ride against a gear inside the servo.  But, one thread is 

too short.  The screw is a 6-32.

I will need to look through my parts bins to see if I have the control 

stop for the roll servo.  Otherwise TT will send one out to me.

Thanks everyone for bringing up this topic.  I will now know of a 

mistake that I can easily correct.  Better now than when it is to late.

Larry

Tim Olson wrote:

 	  Quote: 	

 One thing to consider if they won't let you go with longer screws

 is  using loctite on them once you fix it in a position you are

 happy with.  It would be better than having it come apart.

 Tim Olson - RV-10 N104CD - Flying

 Tim Lewis wrote:

> 

>

> Thanks for all the replies.  Good info.

>

> I sent an email to Tru Trak asking about longer screws.  I'll let you 

> know what I hear.  The screw max length will be a consideration, due 

> to the moving pieces inside the servo that are right behind the screw 

> holes.  You can actually see movement of an interior servo part 

> through the screw hole.

>

> Thanks,

>

> Tim

>

_________________
Larry Rosen
#40356
N205EN (reserved)
<http>

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