Glen wrote:
> In this step, prior to laying up the outer layer of CF, I will
> put a
> crosshatch of 3/4" wide Vee grooves in the outer layer of foam, and
> then
> fill those grooves with a layer of CF, which would form a grid of
> reinforcing angles UNDER the outer skin when that is applied. It
> seems like
> a reasonable extra bit of work to do for some extra peace of mind.
I had to cut some grooves in the foam to get my wing back to the
exact shape that I wanted after glassing the bottom half. These were
filled with micro and dressed up before I glassed the top. The finish was
beautiful when I got them back from the paint shop. About a month after
it was at the airport in the summer the grooves started to mirror through
the finish and the glass and have never gone away. ( I know you guys had
to have seen them) I wouldn't do anything to that foam underneath the
glass except keep it perfect and undamaged till the glass is on.
> I'm also going to add four 1/4 inch threaded inserts into the
> top of the
> spars (2 front , 2 rear).That allows me to put Eyebolts into the
> wings
> during ground operations and lift them using a boom, thus being able
> to
> load, unload and attach the wings by myself without putting stress
>
Seems like over kill also. I did one insert of a sort under each
wing to thread in a tie down, but at 48 # the wings are only just
awkward. I use a creeper that folds up into a seat with a piece of foam
on it to support the wing for off and on and can just roll it round on
the seat.
Joe Horton, Coopersburg, PA.
[email protected]
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