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Trim Tab feedback

galt1074

Member
I'd like to ask for some folks to take a look at my elevator/trim tab work here to see if I did this right.
The first picture here is the tabs. I think they came out fine but I'd like more experienced eyes:
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My dimple die put a little bump in the underside...about the time I remembered I have the smaller female die...
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This is the gap that closed up on my after I riveted the hinge to the elevator. Looking for ideas on how to widen this back up. No rubbing right now but I'm guessing there needs to be more gap:
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Finally, two pictures of the underside of the trim tab. Gap at outboard edge and inboard edge. Is this what they are supposed to look like? Plans don't seem to say.
Outboard edge with top edge of tab flush with elevator:
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Inboard edge in full down travel interfering with rivets. Is the travel of the trim tab supposed to go this far. Do I need to modify this in any way?
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Thank you for the help. This is apparently about the point in the build process where the plans start to leave more up to you figuring things out...

Greg
 
Last edited:
I believe the instructions tell you to simple bend the lower trim tab skin sufficiently to prevent interference with the shop heads when the tab moves in the downward direction.

Regarding the gap on the outboard side, plans say min gap is 3/32". I went with the riblet method which allowed me to file the gap open slightly to get the desired fit. Since you bent the tabs, if you need more gap, you'll just need a new piece of hinge and try again with a slightly adjusted alignment.
 
Options

Thanks for the reply. I'm going to explore some other options for fixing the gap between the tab and the elevator but I'll go ahead and get some new hinge in case I can't think of anything more creative.
 
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