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  #1  
Old 07-30-2019, 12:37 PM
cofford cofford is offline
 
Join Date: Jan 2015
Location: Maple Valley, WA
Posts: 20
Default Pitch servo installation

I'm installing my pitch servo and noticed that the AN470 rivets shown here interfere with the servo brackets:



I've done a lot of searching and haven't seen this mentioned elsewhere, so am I missing something? A simple solution could be to drill out the AN470s, countersink, and install AN426s. What have others done here?

Thanks,
Casey
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  #2  
Old 07-30-2019, 01:20 PM
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N546RV N546RV is offline
 
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Location: Brookshire, TX
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I went back in my build log to where I installed these brackets, and if I did anything special, I didn't mention it there: https://rv.squawk1200.net/2016/04/01...ervo-brackets/

I'll try to remember to take a look when I get home tonight and see if anything interesting jumps out at me. This part of the fuselage is wide open for inspection right now, so it's an easy thing to check.
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-8 fuselage in progress (remember when I thought the wing kit had a lot of parts? HAHAHAHAHA)
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  #3  
Old 07-30-2019, 01:29 PM
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Wunderon Wunderon is offline
 
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Not sure which servo you have but for the Dynon there was room on mine to put in 5 or 6 -4 rivets without getting into the bellcrank rib.
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  #4  
Old 07-30-2019, 01:32 PM
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fl-mike fl-mike is offline
 
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Garmin mount? The brackets should be aft of those rivets if I recall correctly.

>>>> oops wrong. Hey, I was at work! The bracket is over the brace rivets. I installed the top 470's (longer) through the brackets, rib, and brace.
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Last edited by fl-mike : 07-30-2019 at 08:02 PM.
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  #5  
Old 07-30-2019, 02:06 PM
cofford cofford is offline
 
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Location: Maple Valley, WA
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I'm using a GRT mount. It looks like they are a bit longer than the Dynon mounts...Maybe trimming the mounts a bit is a better solution. Anyone have a picture showing the mount and the rivets in question?

Edit: the Dynon mounts look to be the same length in this photo:



To me, it looks like the pitch servo bracket would be sitting on the AN470 Bellcrank Rib rivets, which would require me to do something about it.

Last edited by cofford : 07-30-2019 at 02:37 PM.
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  #6  
Old 07-30-2019, 07:20 PM
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Wunderon Wunderon is offline
 
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ah I see, yes replacing the 470s with 426 will work. I don’t think I used any of the small 470s in the build.
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  #7  
Old 07-30-2019, 07:51 PM
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N546RV N546RV is offline
 
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As promised, I checked out my build. Since I installed Dynon brackets, I figured I must have done like Wunderon said and just had them not overlap, but...nope, there's definite overlap:



Looking at it edge-on, everything is clearly sitting flush here, as it should be:



I can only assume that I countersunk for flush rivets in those four spots.
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-8 fuselage in progress (remember when I thought the wing kit had a lot of parts? HAHAHAHAHA)
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  #8  
Old 07-30-2019, 08:09 PM
Allan Stern Allan Stern is offline
 
Join Date: Jan 2006
Location: Cape Coral, Florida
Posts: 297
Default Servo brackets

Do you think that the AN 470 rivets go through the servo brackets? The picture does not show an auto pilot servo bracket installed. It only is showing the elevator bell crank brackets. An auto pilot is extra and not part of the plans.


Allan
RV 6A sold
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  #9  
Old 07-30-2019, 08:11 PM
resrob66 resrob66 is offline
 
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Location: Louisville, KY
Posts: 38
Default Pitch servo bracket....Garmin style

I did mine like this.

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  #10  
Old 07-31-2019, 02:00 AM
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rv8ch rv8ch is offline
 
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Location: LSGY
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Default pitch servo installation

Here's how I did it.

http://www.rv8.ch/autopilot-pitch-servo-installation/

I made the bracket a bit longer so that it would be easier to remove the servo if needed. The Dynon instructions were very useful, even though it's a GRT servo. I would also consider buying the Dynon install kit, it's really complete.
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