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Trim indicator

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tdawson-townsend(at)auror
Guest

Posted: Sun Aug 09, 2009 7:42 am Post subject: Trim indicator

All:  

   

Testing the trim (Safety-Trim) and trim indicator (Ray Allen), I got just one lit bar, at the far end of the indicator range. (can’t tell yet whether it’s the “up” or “down” end)  Checking things, somehow I was applying 24 volts to the indictor power!  I fixed that, but the result is the same.    

   

Do you think I “toasted” the indicator and now it will only show that one lit bar at the end of the scale, or is there some debugging I can do between the three signal wires from the trim servo?  I looked for some info from Ray Allen on debugging at that level, without success.  

   

I figure RAC will answer my question on Monday, but thought I would try the list in case anyone has some insight there.  

   

Thanks,  



 TDT  

   

Tim Dawson-Townsend  

40025  

tdt(at)aurora.aero (tdt(at)aurora.aero)   

617-500-4812 (office)  

617-905-4800 (mobile)  

   

      [quote][b]

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rbibb

Joined: 16 Jul 2009
Posts: 37

Posted: Sun Aug 09, 2009 8:11 am Post subject: Trim indicator

You might have fried some of the individual LEDs.  

   

If you apply 12V directly to the indicator input line all LEDs should light.  

   

I don’t have the indicator schematic handy but that is how I recall it is wired.  

   

When you applied 24V you got twice the current going through the elements.  Depending on how long and the current capacity of the diodes they might e OK.  At least one of them is….  

     

Richard Bibb  

972-771-2598  

972-835-5979 mobile  

   

        

  

From: owner-rv10-list-server(at)matronics.com [mailto:owner-rv10-list-server(at)matronics.com] On Behalf Of Dawson-Townsend,Timothy

 Sent: Sunday, August 09, 2009 10:38 AM

 To: rv10-list(at)matronics.com

 Subject: Trim indicator  

  

   

All:  

   

Testing the trim (Safety-Trim) and trim indicator (Ray Allen), I got just one lit bar, at the far end of the indicator range. (can’t tell yet whether it’s the “up” or “down” end)  Checking things, somehow I was applying 24 volts to the indictor power!  I fixed that, but the result is the same.    

   

Do you think I “toasted” the indicator and now it will only show that one lit bar at the end of the scale, or is there some debugging I can do between the three signal wires from the trim servo?  I looked for some info from Ray Allen on debugging at that level, without success.  

   

I figure RAC will answer my question on Monday, but thought I would try the list in case anyone has some insight there.  

   

Thanks,  



 TDT  

   

Tim Dawson-Townsend  

40025  

tdt(at)aurora.aero (tdt(at)aurora.aero)   

617-500-4812 (office)  

617-905-4800 (mobile)  

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       [quote][b]

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rv10builder(at)verizon.ne
Guest

Posted: Sun Aug 09, 2009 4:41 pm Post subject: Trim indicator

Does the trim actually move but the indicator does not?

I went out and tested the POS-12 for my flaps and was able to get the

indicator to move as I moved the trim itself, however it stayed in one

position when the trim was not powered/working.

could be a matter of calibrating it as well, if it's on the EFIS or

other component.

Pascal

On Sun, 2009-08-09 at 11:38 -0400, Dawson-Townsend,Timothy wrote:

 	  Quote: 	
		   All:

 

  

 

 Testing the trim (Safety-Trim) and trim indicator (Ray Allen), I got

 just one lit bar, at the far end of the indicator range. (can’t tell

 yet whether it’s the “up” or “down” end)  Checking things, somehow I

 was applying 24 volts to the indictor power!  I fixed that, but the

 result is the same.  

 

  

 

 Do you think I “toasted” the indicator and now it will only show that

 one lit bar at the end of the scale, or is there some debugging I can

 do between the three signal wires from the trim servo?  I looked for

 some info from Ray Allen on debugging at that level, without success.

 

  

 

 I figure RAC will answer my question on Monday, but thought I would

 try the list in case anyone has some insight there.

 

  

 

 Thanks,

 

 

 TDT

 

  

 

 Tim Dawson-Townsend

 

 40025

 

 tdt(at)aurora.aero 

 

 617-500-4812 (office)

 

 617-905-4800 (mobile)

- The Matronics RV10-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:

http://www.matronics.com/Navigator?RV10-List

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