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  #1  
Old 07-01-2018, 04:40 PM
rvator4twa rvator4twa is offline
 
Join Date: Mar 2005
Location: Dardenne Prairie, MO
Posts: 109
Default Intermittent elevator trim

Had a flight with elevator trim inoperable. Tried a bigger fuse and worked again. After it quit again, I examined the area and discovered the threaded bar between the trim tab and trim motor was catching sometimes on the threads. Used a dremmel to lengthen the slot and problem is solved.
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M71-Greensfield, MO near St. Louis
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  #2  
Old 07-16-2018, 09:02 PM
rvator4twa rvator4twa is offline
 
Join Date: Mar 2005
Location: Dardenne Prairie, MO
Posts: 109
Default Intermittent elevator trim

Thought extending slot for trim tab push rod fixed problem but not for long. According to Gary at Ray Allen, I need a new trim relay and to test it he said when access is available, tap the relay to see if it works. Sure enough. I only have 250 hours on airframe but new replacement relay is beefier.
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Ron Burnett N524RB
RV-6A Lycoming O360 dual EFII
From Subaru changeover.
M71-Greensfield, MO near St. Louis
Dues gladly paid Nov. 2017
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  #3  
Old 07-16-2018, 09:56 PM
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Ironflight Ironflight is offline
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Location: Dayton, NV
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Default

This is a well known problem with older Ray Allen relays. Very common years ago. I think they must have changed the design, becasue I haven’t heard of any recent failures in newer installations.

Paul
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RV-8 - N188PD - "Valkyrie"
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  #4  
Old 07-17-2018, 07:54 AM
rvator4twa rvator4twa is offline
 
Join Date: Mar 2005
Location: Dardenne Prairie, MO
Posts: 109
Default Trim relay

True Paul. I had the relay deck 1 and am installing deck 2 which looks over twice as tall. Expect to not have that issue again.
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Ron Burnett N524RB
RV-6A Lycoming O360 dual EFII
From Subaru changeover.
M71-Greensfield, MO near St. Louis
Dues gladly paid Nov. 2017
Reply With Quote
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