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#Post#: 1615--------------------------------------------------
Re: Alunimum wings for diy 75
By: lynx wind Date: February 22, 2014, 8:59 am
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That looks fantastic! That little bit of TE return wont bother
anything. How easy is this to form?
#Post#: 1616--------------------------------------------------
Re: Alunimum wings for diy 75
By: sut Date: February 22, 2014, 9:06 am
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Easy !! total time to make it was 1 1/2 hrs and that included
making the formers and gluing, so if you had the metal bent
(TE) and formers made I would say 15 minutes or less
I don't like using goop but it does hold ! it seems to skin over
to fast and then have a tendency to make seams thicker, but I
will get use to it
#Post#: 1846--------------------------------------------------
Re: Alunimum wings for diy 75
By: sut Date: March 23, 2014, 7:48 am
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I made another set of wings for my diy 75 with the fold on the
trailing edge and they came out good, I think they are stronger
than the ones I made with out it. The fold on the trailing edge
for some reason seems to make keeping the twist out of them a
little bit harder !but may be when I cut the aluminum I was out
of square or didn't get the edge without the fold all the way in
to the fold. After the glue (goop) dried I cant take and bend or
twist the wing with my hands they are strong.
#Post#: 2222--------------------------------------------------
Re: Alunimum wings for diy 75
By: happygolucky Date: April 12, 2014, 8:54 pm
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very nice job you make it look easy..great video.. :)
#Post#: 2224--------------------------------------------------
Re: Alunimum wings for diy 75
By: lynx wind Date: April 12, 2014, 11:21 pm
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SUT showed us how to make these blades in the parking lot of the
restaurant where we had lunch. It took him just a few minutes,
including time to explain the steps he has mastered. First step
is the TE fold which he makes with a bending tool he fabricated.
Then a fold over of the airfoil, press and tuck back in the TE.
Very impressive how he has made this so easy. Then he showed
us how with a slightly different technique you can achieve an
asymetric airfoil. The material he uses comes in several
prefinish colors.
#Post#: 2225--------------------------------------------------
Re: Alunimum wings for diy 75
By: lynx wind Date: April 12, 2014, 11:22 pm
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More pics from our meetup
#Post#: 2266--------------------------------------------------
Re: Alunimum wings for diy 75
By: sut Date: April 15, 2014, 11:05 am
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Ok gave gutter seam sealer time to dry (48 hrs) and its a no go!
the TE was easily separated and still not dry ! it stuck to the
wood real good and have not been able to get it off with out
destroying the piece of aluminum but I would think that the seam
sealer is probably still wet under it also. They never called it
glue so looks like its still goop as a best bet so far
#Post#: 2268--------------------------------------------------
Re: Alunimum wings for diy 75
By: happygolucky Date: April 15, 2014, 11:37 am
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i do not mean to but in.. an hope i'm not, out of line.. but how
about eliminate the glue for a silicone sealer... an a
interlock system approach just an idea! use apposing grooves
that interlock say like siding an a crimp tool? on the (
crimp grove approach in a few places so they lock like siding..)
i now you are probably looking for a seamless look
or a stove pipe interlock system modified ...i think you
understand
HTML http://www.google.st/patents/US1138402
#Post#: 2273--------------------------------------------------
Re: Alunimum wings for diy 75
By: lynx wind Date: April 15, 2014, 2:18 pm
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@Happy,
Yes, the type of seam you are talking about is super solid.
We are trying to minimize work, cost and also the drag from any
perturbance on the airfoil. What SUT has developed is superb
and offers 12 sqin of area that can be adhered with GOOP
adhesive. The forces acting on this area are sheer force and
will easily handle the very slight amount. The force acting on
this joint will actually be pulling it hard together, not apart.
#Post#: 2293--------------------------------------------------
Re: Alunimum wings for diy 75
By: sut Date: April 16, 2014, 8:20 am
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@ HGL I didn't take your idea as an insult and no apology is
needed I understand your just trying to help . That's the way I
came up with the Idea to make the wing that as of right now good
and simple to make by the average person.
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