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Initial cleanup. Wing polishing at Rich's hangar.
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Initial cleanup. Wing polishing at Rich's hangar.
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Fuse laying like a dead fish on my driveway.
Small underbelly repairs. |
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Once there were gouges, now there is Kevlar.
Although not part of the original formula, it should do better than the E-glass it topically replaced. |
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Port wing is 10cm shorter than stbd wing at this moment.
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Stbd wing masked and ready for surgery.
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The hacking commences
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Much later...
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What I found after cutting off the port wingtip.
Solid foam to my disbelief. It was probably just left over pieces, non-structural. They are being removed with a utility blade. |
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The excised tips after being cleaned of remaining foam & glue.
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View of port wing after mutilation.
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View of port wing after mutilation.
Notice the lead ballast glassed into the leading edge. This is done for flutter control. I have seen the same inside ASW-27 wings. |
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View of stbd wing after mutilation.
Notice the lead ballast glassed into the leading edge. This is done for flutter control. I have seen the same inside ASW-27 wings. Also notice that the spar stops about 23 cm short of the actual tip. This is merely an observation and not a problem. |
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Closer view...
Lots of glue overflow which has to be removed for fitting of the new spar structure. This was a pain since they use some pretty serious glue and reaching in was difficult. |
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Good view of the ballast brick.
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Stbd tip with new spar structure and soon-to-be endrib halves.
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Closeup of new spar structure.
It extends about one foot into the wing and is anchored to the top & bottom skins ad well as to the front of the spar to the extent possible. |
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Stbd tip with new spar extension receptacle in place.
The spar extension (receptacle) consists of 1.625-inch OD aluminum (T6 6061, wall = .058) embedded in a 6-bid carbon "box", the whole deal floxed to the top skin, bottom skin and front of existing spar. |
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More of the same.
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The new wingtip gaining shape.
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The new wingtip gaining shape.
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10-cm wingstub I hacked off now has a little spar.
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Detail of wintip stub.
The male portion of the spar extension is also aircraft qual aluminum tubing, 1.5-inch OD, wall = 0.058 (irrelevant).
Simple arithmetic gives .009 clearance. A nice fit! |
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Finished wingtip stub.
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The end of the wing now finished and after test flights.
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The happy pair.
The fit of the aluminum tubing is excellent. It almost looks as if I knew what I was doing :) |
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Reunited again after the surgery.
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Reunited again after the surgery.
The fit is essentially perfect. The cut made in the wing was not at 90 degrees to the wing, but parallel to the fuselage centerline instead. |
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