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Nose ribs


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Posted

Just noticed that the nose ribs on my wings are about 1/8" taller than the other ribs. Do they have to be sanded down? Lot of sanding.

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Posted (edited)

They should be same height as main ribs - guess someone didn't measure when gluing them in - it should fly OK that way, but shrinking fabric may possibly put enough pressure on them to bend or break them.   The easiest solution that I can think of is to glue some 1/8" thick capstrips on the tops of the main ribs to make everything even.  The nose ribs break very easily - just how do I know that?   I have mended lots of them!   EDMO

Edited by EDMO

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Posted

Yeah, I've got 3 or 4 broken ones. Haven't got that far yet.

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Posted

Was trying to figure out what you were talking about, I'm guessing you mean the false ribs? (the little ones between the big ones)  JImChuk

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Posted

Yes. My assembly manual calls them nose ribs.

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Posted

I had to remove all of my MK IV false ribs (both wings) due to the aluminum leading edge being a real mess. With a heat gun and patience, I was able to remove them all, clean up the spar and then put them back in place. A taut line from wing tip to root made placing them back at the correct height pretty straight forward. And then I replace the aluminum with a thin veneer of plywood.

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Posted

Getting a length of 1" or 1.5" aluminum channel to lay across the ribs makes it really easy to clamp and glue the false ribs into place.

:BC:

 

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