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-   -   Autopilot Stop Bracket? (https://vansairforce.net/community/showthread.php?t=85617)

D&M Dan 04-26-2012 11:46 AM

Autopilot Stop Bracket?
 
Has anyone mounted the autopilot stop bracket that came with the rear servo (aileron)? I looks pretty generic and no matter what position we place it in, it does not come close to actually stopping anything.
We can't seem to find any instruction specific to the 12 model.

Bill_H 04-26-2012 12:29 PM

I did not. They are not specified in the RV-12 plans - that's the overriding consideration. I could find no pictures of them being installed on anyone's plane.

DFlyer 04-27-2012 11:48 AM

The autopilot stop bracket is a backup safety device to make sure that the servo arm can never go over-center. In actual installation and use the servo arm should not touch the bracket. The aircraft control surface stops are the primary limits.

-Robert
Dynon Marketing

david.perl 10-10-2015 08:54 AM

I was just watching the really neat new dynon skyview videos in youtube, one of them being about fitting the servo stop bracket. If the primary control surfaces are preventing the servo getting anywhere near to an over centre condition, i cant envisage a situation when the servo ever would, unless a control rod has come adrift, in which case the servo over centering is the least of my worries. Or am i missing something here?

rvbuilder2002 10-10-2015 10:11 AM

Quote:

Originally Posted by david.perl (Post 1020635)
Or am i missing something here?

No, you are not.

joedallas 10-10-2015 10:54 AM

Garmin GSA 28 servos
 
Does anyone know if there is a kit for installing Garmin GSA 28 servos in the brackets that were for the Dynon Servos

Joe Dallas

rvbuilder2002 10-10-2015 11:30 AM

Quote:

Originally Posted by joedallas (Post 1020653)
Does anyone know if there is a kit for installing Garmin GSA 28 servos in the brackets that were for the Dynon Servos

Joe Dallas

I think they both mount the same and can use the same bracket.

Phantom30 10-10-2015 12:24 PM

Quote:

Originally Posted by rvbuilder2002 (Post 1020659)
I think they both mount the same and can use the same bracket.

There is a minor modification required to the mounting brkts which is covered in the plans.

BobTurner 10-10-2015 01:14 PM

Quote:

Originally Posted by david.perl (Post 1020635)
I was just watching the really neat new dynon skyview videos in youtube, one of them being about fitting the servo stop bracket. If the primary control surfaces are preventing the servo getting anywhere near to an over centre condition, i cant envisage a situation when the servo ever would, unless a control rod has come adrift, in which case the servo over centering is the least of my worries. Or am i missing something here?

Yes you are.
Loss of a control rod does not not mean loss of control. You have 2 ailerons; and the elevator can be controlled with the pitch trim. But if something is jamed over center at one end of the range of motion, only a parachutte will save you.

rvbuilder2002 10-10-2015 02:03 PM

Quote:

Originally Posted by BobTurner (Post 1020676)
Yes you are.
Loss of a control rod does not not mean loss of control. You have 2 ailerons; and the elevator can be controlled with the pitch trim. But if something is jamed over center at one end of the range of motion, only a parachutte will save you.

True, but with the RV-12 control system it is impossible for an over center situation on the autopilot servos to occur.

joedallas 10-10-2015 03:47 PM

is there a servo kit
 
is there a Garmin servo kit
I can't find it on van's site

Joe Dallas


Quote:

Originally Posted by Phantom30 (Post 1020667)
There is a minor modification required to the mounting brkts which is covered in the plans.


Phantom30 10-10-2015 05:44 PM

Quote:

Originally Posted by joedallas (Post 1020687)
is there a Garmin servo kit
I can't find it on van's site

Joe Dallas

Joe...what you need is plans section 44B-1 thru 44B-06. You need part F-00072 to know where to modify existing brackets (grind off in an arc)....easy to do.

The pitch servo rod is different....Dynon is 6-1/4", Garmin is 6-3/16"

There is a wiring change....2 new wires are run from avionics bay to pitch servo plug to replace 2 that get taped off. Hope this helps.

Edit...I got mine from Vans when I ordered my G3X package...give them a call.

joedallas 10-10-2015 05:55 PM

Thanks
 
Thanks

I will call Monday

Joe D




Quote:

Originally Posted by Phantom30 (Post 1020709)
Joe...what you need is plans section 44B-1 thru 44B-06. You need part F-00072 to know where to modify existing brackets (grind off in an arc)....easy to do.

The pitch servo rod is different....Dynon is 6-1/4", Garmin is 6-3/16"

There is a wiring change....2 new wires are run from avionics bay to pitch servo plug to replace 2 that get taped off. Hope this helps.

Edit...I got mine from Vans when I ordered my G3X package...give them a call.


joedallas 10-11-2015 07:28 AM

drawings 44B-1 thru 06
 
I looked on vans web site for drawings 44B-1 thru 06. and could not find them.

Does any have a link to these drawings

Thanks

Joe Dallas




Quote:

Originally Posted by Phantom30 (Post 1020709)
Joe...what you need is plans section 44B-1 thru 44B-06. You need part F-00072 to know where to modify existing brackets (grind off in an arc)....easy to do.
Edit...I got mine from Vans when I ordered my G3X package...give them a call.


JerryH 10-11-2015 07:33 PM

Send Van's support an email and they will email the file to you.

rvbuilder2002 10-12-2015 09:52 AM

Quote:

Originally Posted by rvbuilder2002 (Post 1020678)
True, but with the RV-12 control system "That has been built correctly"it is impossible for an over center situation on the autopilot servos to occur.

I am updating this post based on new info...

Apparently at least one builder has made, and then installed a servo pushrod of an incorrect length and then complained of a problem with the control system not working properly.

It is difficult to understand how this could occur since the PAP has a complete control system check procedure, along with an autopilot calibration procedure that requires that the control stick be moved to all extremes of control travel....:rolleyes:


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