|
|
|
----- Original Message -----
Sent: Saturday, May 22, 2004 9:14
AM
Subject: [FlyRotary] Re: Fiberglass
Help!
Hi Ed, One easy way that I use is to place the cloth between
two pcs. of plastic sheeting (drop cloths from Home Depot) add the resin to
the cloth, then squegee using a pc. of plastic or body filler squeegees work
good. This way you can see when the glass wets out and you can squeegee the
excess resin off to the side if the sheet to save weight. Remove one side of
the plastic to apply so you don't get it all over you. It is also easy to cut
to size using a Fiskars rotary cutter, just take a marker and lay out the
shape you want, cut it and there it is with little mess. For ducts, 8 oz.
unidirectional cloth should be about right. Fred
Hi, Ed....Fred is right....doing the layups between plastic will allow
you to squeege out unnecessary resin and save weight. As far as the
cloth, bidirectional is nice, but S-glass has a finer weave, is much stronger
and lighter. I have used it almost entirely on my SQ2000. Paul
Conner
At 09:51 AM 5/22/2004, you wrote:
Ok, you
fiberglass types. I need some guidance. I can (and have) slapped resin
on glass cloth and obtained a functional (if heavy) item. However, I
am about to start work on my new radiator ducts and I would like to do
better. My ducts will be approx. 4"x4" at the inlet and approx. 9"x10"
at the core. There might be as much as 1 psi pressure on the walls (if
I should ever be so lucky to go that fast).
There a some semi compound curves at the corners of the
duct as it slopes inward from the top and bottom from the core to the
inlet.
I need your
recommendation about the weight and weave of the cloth. I have
previously used the cloth tape as it was easy to manage, but it required
several layers and it is a bit heavy. Like I said functional but not
pretty nor light.
I would like
your guidance on how best to apply the sheet to the mold. In the past, I
basically wrap the foam mold in duct tape and the lay resin on it followed
by raps of the cloth tape and more resine. I am told that using sheet
rather than the tape and first laying it out on aluminum foil to wet it and
then cut it in sizes say to fit a side of the 4 side foam mold with a bit
for overlap with the adjacent sides was one way to
go.
Any suggestions would be
appreciated.
Ed
Ed
Anderson
RV-6A N494BW Rotary Powered
Matthews,
NC
|
|