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Well, the check valve thing is going to take a while, so I switched to remaking
my vent lines. Here's attempt #1 for today.
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Unfortunately, the last bend was too close to the end of the tubing. I tried
flaring the tube before making this bend, but my bender deformed the flare. That's
OK...the odds of this line fitting perfectly are slim to none, anyway.
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Attempt #2. You can see that the downward leg of the tubing has been extended. I
also shortened the vertical section another 3/8 inch to allow better clearance for accessing
the upper engine mount bolt.
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With some Adel clamps holding it in position, it looks like it should fit pretty well.
I just need to trim the ends a bit.
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About 3/32 off the horizontal leg...
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...and about 1/2 inch off the vertical leg should do it.
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With the ends trimmed and flared, the vent line fit very well except for right
near the lower weldment gusset. There's only about 1/16 inch clearance between the
line and these rivet heads. It's probably enough, but I think I'll make a slight design
change to allow more clearance.
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Attempt #3. Much better!
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Some time later, I made up a mirror image for the left hand side of the fuselage.
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Oddly enough, the horizontal leg needed shortened about 1/8 inch. Weird. Well
no problem since the folks that make tubing cutters put these handy grooves in the
rollers to allow for cutting off just the flare.
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Left side done.
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