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the old process of trying to get the flaperon to match the hinges after
the hinges were already on the wing. Also, Anyone building their wings
will be able to use the flaperons to establish the thickness of the aft
shear web more accurately during the wing assembly. The wing jigs left
something to be desired in that regard.
After the production of the plugs and molds I just described for the top sides of the flaperons, there remained the molding of the bottom sides of the flaperons! This seemed like it was going to be a much less challenging task since the bottom is perfectly flat with few complications. Suffice it to say that this did not prove to be true. I am going to spare you the details, but I made the molds from 22 gauge stainless steel. This eliminated all the sanding and finishing that would have been required by conventional methods, but I had a very difficult time getting a company with sophisticated metal fabrication equipment (brake) to bend some very delicate bends for me. Once fabricated, these SS molds were adhered to substantial bases and reinforced. Then they were treated with mold release just as any other mold and proof parts were pulled. As of this writing, we are waiting on a supply of carbon fiber to start the regular and continuous production of these flaperons. They are going to reduce the build time and eliminate one of the biggest chores in building the Glass Goose. They will be a strengthening factor in our program and just one more reason a person can be proud to own a Glass Goose. MAIN GEAR FAIRINGS(sometime
in May)
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nose
to tail will simply be placed on the wing with flox on the bonding flanges!
That’s it! The old days of spending weeks and weeks sculpting and glassing
and doing finish work to create the fairings are no longer necessary. The
molds to make these fairings are quite complex due to the complex shape.
Each mold is actually 2 molds. A right half and a left half that bolt together!
I expect these fairings to be available in about 4 - 6 weeks. These fairings
can be installed on the lower wing before OR after the wing is installed
on the fuselage. Since almost all of the little bit of finish work associated
with these fairings is on the top side of the wing, there are no inconveniences
associated with putting them on after the wing is on the fuselage. The
landing gear must be completely installed on the wing prior to installing
the fairings in order that the fairings can be properly aligned and matched
to the gear legs.
PRE-MOLDED
MAIN GEAR FAIRING(middle of June)
I have received a lot of compliments on my fairings and they are identical as far as the eye can see. It took a LOT of hours and a lot of work to get them that way. I have been wanting to mold these difficult parts for a long time, but other priorities kept that from happening. Also, I kept trying to figure out just HOW to mold them? As a whole, they are a part that has what is called negative draft. That is to say that if you were to lay up a part in a mold of this nature, you wouldn’t be able to get the part out of the mold! Kind of like laying up glass inside a bottle. After the epoxy cured, you couldn’t get the fiberglass out without breaking the bottle. SO, that presented a challenge. I decided that the solution was to mold the fairing in 2 halves. I have done one fairing (the right) so far and it looks very good. The resulting 2 molds when bolted together form the complete fairing. I do not know at this time whether I will bolt the halves together and lay |
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| GLASS GOOSE GAZETTE * ISSUE #17, June 15, 2000 |
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