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Those @&$#^ flap position sensors!

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philperry9

Joined: 23 Nov 2011
Posts: 381

Posted: Tue Mar 01, 2016 12:31 pm Post subject: Those @&$#^ flap position sensors!

I've about had all I can handle finding a simple and effective way to mount these Ray Allen POS-12 sensors in the airframe. 



No matter what I do I can't find a good way to mount them where they can travel with the flap system. 



I've been trying to mount them under the flap tube covers on the rear seats mounted to the rear spar area and attached to the tube. 



I've nearly thrown my phone clear across this hangar about 15 times and I've invented cuss words that didn't exist before I took on this (what should be) ridiculously simple task.  



I need some better ideas and photos.   I don't want to scrap this plane because of a $20 sensor but right now I've had all I can handle. 



Thanks for letting me vent and for the ideas gentlemen. 



Phil



Sent from my iPhone

bwestfall

Joined: 22 Oct 2008
Posts: 131
Location: Portland, OR

Posted: Tue Mar 01, 2016 1:15 pm Post subject: Those @&$#^ flap position sensors!

I copied Mark Cooper's install and although I am not yet flying it appears

to be able to go stop to stop w/o issue.  Scroll down to the pictures in the

post below on his blog.



https://myrv10factory.wordpress.com/2012/12/08/first-real-traffic-info-avion

ics-checklists-oxygen-head-unit-illumination-holiday-decorations-flap-positi

on-sensor-onboard-audio-entertainment/



Not knowing how much pain he went through to settle on the mount location

and size of plate I tried to mimic the same size for the aluminum plate

attaching the POS-12 to the hinge as him.  I then attached it to the flap

tube with the adel clamp and held it in place on the rear seat finding the

optimal spot to attach the hinge to the rear seat bulkhead.  Like I said not

flying yet but I can get it to go stop to stop... just barely but it does.



This VAF thread has some other ideas as well

http://www.vansairforce.com/community/showthread.php?t=56927



Ben Westfall

Portland, OR



--

rnewman(at)tcwtech.com
Guest

Posted: Tue Mar 01, 2016 2:01 pm Post subject: Those @&$#^ flap position sensors!

I did the exact same setup for the flap positioning sensor.  Works perfectly well,  4 years in service.   One important note.   You Do Not need to mechanically go end to end with flap travel on the sensor.    In fact you don't want it to, that way you are never putting mechanical stress on the parts.    In the software for whatever flight screen you are using you set up the "limits" as reported by the sensor and those values get mapped to the flap position displayed.   It's just like calibrating the fuel senders.  



Bob Newman

TCW Technologies, LLC

610-928-3420



[quote] On Mar 1, 2016, at 4:11 PM, Ben Westfall <rv10(at)sinkrate.com> wrote:

 

 

 

 I copied Mark Cooper's install and although I am not yet flying it appears

 to be able to go stop to stop w/o issue.  Scroll down to the pictures in the

 post below on his blog.

 

 https://myrv10factory.wordpress.com/2012/12/08/first-real-traffic-info-avion

 ics-checklists-oxygen-head-unit-illumination-holiday-decorations-flap-positi

 on-sensor-onboard-audio-entertainment/

 

 Not knowing how much pain he went through to settle on the mount location

 and size of plate I tried to mimic the same size for the aluminum plate

 attaching the POS-12 to the hinge as him.  I then attached it to the flap

 tube with the adel clamp and held it in place on the rear seat finding the

 optimal spot to attach the hinge to the rear seat bulkhead.  Like I said not

 flying yet but I can get it to go stop to stop... just barely but it does.

 

 This VAF thread has some other ideas as well

 http://www.vansairforce.com/community/showthread.php?t=56927

 

 Ben Westfall

 Portland, OR

 

 

 

 --

flying-nut(at)cfl.rr.com
Guest

Posted: Tue Mar 01, 2016 2:06 pm Post subject: Those @&$#^ flap position sensors!

Somewhere I saw an installation that used an Adel clamp on the flap 

torque tube with the POS-12 mounted to the side of the tunnel.  A tab 

with a row of small holes was attached to the Adel clamp to create an 

arm using it's screw and the holes used to set the travel.  Model 

airplane clevises were used to connect the POS-12 to the tab.

Linn



On 3/1/2016 4:11 PM, Ben Westfall wrote:

[quote] 



 I copied Mark Cooper's install and although I am not yet flying it appears

 to be able to go stop to stop w/o issue.  Scroll down to the pictures in the

 post below on his blog.



 https://myrv10factory.wordpress.com/2012/12/08/first-real-traffic-info-avion

 ics-checklists-oxygen-head-unit-illumination-holiday-decorations-flap-positi

 on-sensor-onboard-audio-entertainment/



 Not knowing how much pain he went through to settle on the mount location

 and size of plate I tried to mimic the same size for the aluminum plate

 attaching the POS-12 to the hinge as him.  I then attached it to the flap

 tube with the adel clamp and held it in place on the rear seat finding the

 optimal spot to attach the hinge to the rear seat bulkhead.  Like I said not

 flying yet but I can get it to go stop to stop... just barely but it does.



 This VAF thread has some other ideas as well

 http://www.vansairforce.com/community/showthread.php?t=56927



 Ben Westfall

 Portland, OR



 --

trigo(at)mail.telepac.pt
Guest

Posted: Tue Mar 01, 2016 2:48 pm Post subject: Those @&$#^ flap position sensors!

Phil

 

Don’t feel lonely. I felt the same way a couple of months ago, struggled to find a solution and rested my case. Being doing something else in the meantime.

So, I am glad you asked.

I’m all hears …

 

Thanks

Carlos  

 

 

 

--

cooprv7(at)yahoo.com
Guest

Posted: Tue Mar 01, 2016 3:23 pm Post subject: Those @&$#^ flap position sensors!

This may not really help, but if the thing is causing that much angst perhaps you could skip the sensor altogether.  I use the Mark I eyeball to set the flaps and it works really well.  The RV-10 has such great handling characteristics a few degrees just isnâ€™t going to make a difference.

Marcus



On Mar 1, 2016, at 5:44 PM, Carlos Trigo <trigo(at)mail.telepac.pt (trigo(at)mail.telepac.pt)> wrote:

do not archive

Phil

 

Donâ€™t feel lonely. I felt the same way a couple of months ago, struggled to find a solution and rested my case. Being doing something else in the meantime.

So, I am glad you asked.

Iâ€™m all hears â€¦

 

Thanks

Carlos  

 

 

 

--

kearney

Joined: 20 Sep 2008
Posts: 563

Posted: Tue Mar 01, 2016 4:26 pm Post subject: Re: Those @&$#^ flap position sensors!

Phil



I understand your frustration. If you wish, I'll certainly take your project off your hands at no charge to you!.



Failing that, what I did was mount the POS12 on the foot-well wall using a small length of hinge. I then, as others have, installed an adel clamp to the flap with a tube. The adel clamp had a small L shaped bracket that attached to the POS-12 arm. Very simple and quite similar if not identical to what others did.



The trick was to get the hinge / pos 12 on a place on the foot-well where the full range of the flap movement wouldn't over / under extend the POS-12 arm. This I did by trial and errior. When I had it exactly where I wanted, I used pop rivets to attach the hinge. I used aluminium tape to hole the hinge pin end in place so I could remove easily at a later date if required.



Here are a couple of trial that  may help visualize things.



Cheers



Les

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bill.peyton

Joined: 19 Sep 2010
Posts: 198
Location: St. Louis, MO

Posted: Wed Mar 02, 2016 6:32 am Post subject: Re: Those @&$#^ flap position sensors!

Here is how I did it.  Remember, you do not need full travel of the sensor, so keep the radius as small as possible.  50% travel will do just as well as full travel.  The rods can be purchased at any RC hobby shop.

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_________________
Bill
WA0SYV
Aviation Partners, LLC

bill.peyton

Joined: 19 Sep 2010
Posts: 198
Location: St. Louis, MO

Posted: Wed Mar 02, 2016 6:35 am Post subject: Re: Those @&$#^ flap position sensors!

More Photos

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_________________
Bill
WA0SYV
Aviation Partners, LLC

hotwheels

Joined: 01 Jun 2007
Posts: 240

Posted: Fri Mar 04, 2016 7:42 am Post subject: Re: Those @&$#^ flap position sensors!

Here's what I did... Really simple and flying without issue for several years.



Regards,

Jay

N433RV

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