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  #1  
Old 06-23-2018, 04:22 PM
dsm8 dsm8 is offline
 
Join Date: Oct 2006
Location: Madison CT
Posts: 45
Default Fiberglass

I am about to order the fiberglass for the canopy fairing. AC Spruce Rutan bidirectional, 8.8 oz. Any thoughts for how much I need?

Thanks
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  #2  
Old 06-23-2018, 05:07 PM
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Piper J3 Piper J3 is offline
 
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Location: Hinckley, Ohio
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Are you planning on doing it just once?
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  #3  
Old 06-23-2018, 06:38 PM
dsm8 dsm8 is offline
 
Join Date: Oct 2006
Location: Madison CT
Posts: 45
Default Fiberglass

Never, but lets say how much fiberglass per attempt.
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  #4  
Old 06-23-2018, 06:48 PM
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tomkk tomkk is offline
 
Join Date: Apr 2014
Location: Port Orange, Fl
Posts: 765
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Section 3 of the KAI says 3 yards. I used less than 2 ...
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  #5  
Old 06-23-2018, 08:52 PM
RFSchaller RFSchaller is offline
 
Join Date: Oct 2010
Location: Phoenix, AZ
Posts: 2,302
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One thing about fiberglass: it is very forgiving. If you donít like the result sand it down and put another layer on. Practice first and learn where to use epoxy, slurry, flock and paste. Donít use Kevlar cloth as it is tough to cut and sand.
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  #6  
Old 06-24-2018, 12:05 PM
DaveWelch DaveWelch is offline
 
Join Date: Mar 2005
Location: Huntsville, AL
Posts: 315
Default Rutan cloth

FWIW, offering my (far from expert) experience...
I also ordered the Rutan cloth from ACS (couldn't find the uni-cloth recommended in the KAI at the time)
The Rutan cloth did a great job accommodating the curves. However that same characteristic made it a pain to keep in shape as you move it from the cutting table to the layup. That stuff just flexes all over the place, changes dimensions, and drove me crazy. Also, the lighter weight didn't build up as much as I'd expected.
I'm not unhappy with the result but I will have to do some filling in some spots while prepping for paint. Probably would have to anyway.
RECOMMENDATION: Save or duplicate the fabric cutting templates in case you need to redo a piece or two.
two-cents,
Dave
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  #7  
Old 06-24-2018, 12:52 PM
redbaron redbaron is offline
 
Join Date: Aug 2013
Location: Lucerne,Ca
Posts: 226
Default Fiberglass much less work

Look at Vikingaircraftengines on line They have completed fiberglass unit for about $250. you only have to glue it place and some minor trimming.
Save our $$ on materials and time.
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  #8  
Old 06-24-2018, 12:56 PM
redbaron redbaron is offline
 
Join Date: Aug 2013
Location: Lucerne,Ca
Posts: 226
Default RV-12

Vikingaircraftengines, look uner sale then RV-12
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  #9  
Old 06-24-2018, 01:29 PM
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DonFromTX DonFromTX is offline
 
Join Date: Oct 2010
Location: La Feria Texas
Posts: 3,758
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I did mine of the 12 I built, but the one I bought had the "Viking Shield" I had heard bad things about it, but it actually looked better and was lighter than the one I made. Sure makes it quick and simple. On the other hand I had made lots of stuff with fiberglass, so it was not intimidating to me
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  #10  
Old 06-24-2018, 09:24 PM
Gandalf Gandalf is offline
 
Join Date: Apr 2008
Location: Medford, OR
Posts: 279
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I am no expert having only done the engine cowling. And do note that there is a big difference in movement if you cut fiberglass cloth at a 45 degree diagonal or along the threads. Also sandwiching wet cloth sandwiched between two pieces of plastic (I cut up a disposable trash bag), rolling off excess with a threaded pin, cutting the sandwich with a roller knife, removing one layer of plastic and laying the cut cloth down over wet layup is a neat trick. The remaining layer of plastic just peels off.

Jeff
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