February 3, 2021
After much head scratching on why the manual and the drawings did not seem to match up on trimming of the HS-602 forward spar channels I did some searching on the RV-List. The problem stems from the fact that the manual says to trim the flanges off of the channel but to leave the radius on. The plans seem to show that the part of the channel that is left is flat. After some research I figured that the radius was left to leave some extra metal on the channel for rivet clearances. Leave the radius and then flatten it out before bending the spar.
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