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Date:  11-19-2022
Number of Hours:  1.50
Manual Reference:  
Brief Description:  Drill LH Counterbalance

I wasn't feeling well this morning so I didn't get started working until mid afternoon. The plans call for marking the upper rib to tube hole location with a long #40 drill bit and finishing it on a drill press. It was much easier to drill through the steel on the drill press than by hand. It helps to have a V-block to keep everything steady. Once the initial holes are drilled, you open them up to #27 for machine screws and lock nuts.

Everything was reassembled and set up for match drilling the remaining holes in the skin to tube with a #40, then final sizing to #30.

One problem I see is deburring the hole edge inside the tube. I don't really have the double sided deburring tool, so I may have to pause building the ailerons until I can find one.

UPDATE: Just ordered a couple of deburring blades from McMaster-Carr. They should arrive Tuesday.
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Plans call for long screws to attach the rib and tube.  I could've used the next shorter length.

Plans call for long screws to attach the rib and tube. I could've used the next shorter length.

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Nose assembly ready to match drill skin to tube holes

Nose assembly ready to match drill skin to tube holes

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