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Ok, I think I've got the idea, but I have another
question. I looked for BID cloth on Aircraft Spruce, but could only find
Crowfoot Weave which they claimed was good for compound curves. Is that
the same thing?
Ed
Ed Anderson
RV-6A N494BW Rotary
Powered
Matthews, NC
----- Original Message -----
Sent: Saturday, May 22, 2004 11:29
PM
Subject: [FlyRotary] Re: Fiberglass
Help!
----- 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
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