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wingtips

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bob88

Joined: 24 Feb 2013
Posts: 99

Posted: Wed Nov 12, 2014 3:34 pm Post subject: wingtips

I'm noticing that my wingtips extend about 3/8 inch beyond the trailing edge of the aileron. Is this by design? If not, will there be structural issues related to trimming it back? ALSO, if I sand the protruding seam flush along the outboard edge of the wingtip, will that cause a structural concern?

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bill.peyton

Joined: 19 Sep 2010
Posts: 198
Location: St. Louis, MO

Posted: Thu Nov 13, 2014 6:33 am Post subject: Re: wingtips

It is not unusual to have to modify the trailing edge of the wingtip.  What many of us have had to do is to split the trailing edge in order to get proper alignment. Before you get started, follow the alignment procedure in the IM for the flaps and ailerons.  If the wing tip does not line up with the trailing edge of the aileron, and it is already installed, the carefully split the trailing edge a allow it to line up.  I used a hack saw blade to carefully separate the halves. Line them up then cleco it in place with some temporary clecos to re-attach the upper an lower halves.  Fill in the trailing edge with a slurry of thickened epoxy.  After it sets up, you can finish off the wing tip flush with the aileron.

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_________________
Bill
WA0SYV
Aviation Partners, LLC

rv6lynch(at)embarqmail.co
Guest

Posted: Thu Nov 13, 2014 6:57 am Post subject: wingtips

put a ratchet strap

around the trailing edge of wing tip and leading edge of wing at the rib to 

make sure you have a good fit before you start cutting anything



bob

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bill.peyton

Joined: 19 Sep 2010
Posts: 198
Location: St. Louis, MO

Posted: Thu Nov 13, 2014 7:47 am Post subject: Re: wingtips

As Bob just posted, and let me also emphasize that the wing tip should be installed prior to adjusting the trailing edge

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Bill
WA0SYV
Aviation Partners, LLC

bob88

Joined: 24 Feb 2013
Posts: 99

Posted: Thu Nov 13, 2014 11:27 am Post subject: Re: wingtips

Actually I did use the strap idea and got perfect alignment. Problem is purely a length issue. I guess if others have cut the trailing edge and put it back with some flox I can do as well.

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rene(at)felker.com
Guest

Posted: Thu Nov 13, 2014 11:58 am Post subject: wingtips

I had to adjust both of mine to make them better.  One more than the other.

To help line it all up I used a piece of angle Al off of the aileron to get

it all lined up. 



Rene'

801-721-6080

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bob88

Joined: 24 Feb 2013
Posts: 99

Posted: Thu Nov 13, 2014 12:40 pm Post subject: Re: wingtips

Then a question for Rene...if the only adjustment needed is length, and not alignment, is it necessary to split the wingtip or is there enough structure there to just cut off about 3/8 inch? Can't tell by looking.

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rene(at)felker.com
Guest

Posted: Thu Nov 13, 2014 1:42 pm Post subject: wingtips

One side had a little twist in it that I did not notice until I had mounted

it and it was too long.  So I cut to length and then built up and sanded

strength.  The trailing edge was solid. The other one was longer, I think

because I did not mount it as far forward as I could.  When I looked at it I

decided not to split it, but to cut it even and then looked at what was

remaining and found that one side had plenty of material but the other did

not.  On the "bad" side I cut out a small section, filled it in completely

and the laid in some cloth.  Then filled and sanded to make it smooth.



I am not a glass guy, this was done based on advice I got from a glass

expert I worked with at the time.  



Rene'

801-721-6080

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