Looking for photos of rudder control horn pls.

Bartman

Bartman

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Hi all,

Looking for photos of the fabric at the base of the rudder around the rudder control horn. I'm wondering if the fabric is fit up onto the control horn or if it's cut around it and reinforced with a patch. Since my Citabria has been sold I can't just go to the hangar and look to see how things are done! :mad:

Thanks!
 
Is this the area you are looking for?
 

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Ed,

Thanks for the picture! I can't tell what's going on there though, is the fabric brought down onto the horn or is it cut tight to the horn and there's a fillet of some sort under the paint? it kind of looks like a double patch on the fabric where the horn comes through, doesn't it?
 
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I dunno, wish I had a better picture. I think the fabric is slit and extends onto the horn just a bit. Yes, looks like a patch or two.
 
I normally cut a slit, then allow some glue on the ragged edge. Before final shrinking, a reinforcement patch, again just slitted and glued, will keep the fabric from shrinking away from the arm. Best is canvas or "sail" Dacron. I don't know what the factory does, but we have two locals with factory fabric. I can look.
 
I believe the covering specifications reference a drawing that shows the location of all tapes and patches.
 
Bob Turner said:
I normally cut a slit, then allow some glue on the ragged edge. Before final shrinking, a reinforcement patch, again just slitted and glued, will keep the fabric from shrinking away from the arm. Best is canvas or "sail" Dacron. I don't know what the factory does, but we have two locals with factory fabric. I can look.
Click to expand...
Thanks Bob, I'd appreciate that. The heavier fabric as a reinforcing panel sounds like a good idea but I'll probably see if anyone is around this week that knows for sure. I bought all of my covering supplies from ACA so I thought maybe there'd be a patch in the box but there isn't.
 
Hiperbiper said:
I just glued a small flap of the fabric to both the top and bottom of the rudder horn.
Done correctly no reinforcement is needed.
Chris
Click to expand...
You took a straight piece, folded it down the center and glued it to the horn and the fabric top/bottom on each side?
 
Checked a factory Dec this afternoon. No fold or anything exotic - just a single overlay of 102 fabric. The slit meets the horn, but does not curl outward for more glue surface. I think the aircraft was 1993 - early metal spar, showing leading edge bumps. Otherwise a nice aircraft.
 
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