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06-23-2018, 04:22 PM
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Join Date: Oct 2006
Location: Madison CT
Posts: 68
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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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06-23-2018, 05:07 PM
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Join Date: Nov 2014
Location: Hinckley, Ohio
Posts: 2,056
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Are you planning on doing it just once? 
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Jim Stricker
EAA #499867
PPL/ASEL 1970 - Sport Pilot since 2007
80 hrs Flying Aeronca Chief 11AC N86203
1130 hrs Flying 46 Piper J-3 Cub N6841H
Bought Flying RV-12 #120058 Oct 2015 with 48TT - Hobbs now 618
LSRM-A Certificate 2016 for RV-12 N633CM
Special Thanks... EJ Trucks - USN Crew Chief A-4 Skyhawk
MJ Stricker (Father & CFI) - USAAF 1st Lt. Captain B-17H
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06-23-2018, 06:38 PM
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Join Date: Oct 2006
Location: Madison CT
Posts: 68
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Fiberglass
Never, but lets say how much fiberglass per attempt.
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06-23-2018, 06:48 PM
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Join Date: Apr 2014
Location: Port Orange, Fl
Posts: 931
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Section 3 of the KAI says 3 yards. I used less than 2 ...
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Tom
Port Orange, Fl
EAA #51411
RV-12 N121TK ELSA #120845; first flight 06/10/2015; 700 hrs as of 02/2020
RV-12 N918EN ELSA #120995 Eagles Nest Project; first flight 05/18/2019
SPA Panther N26TK; First Flight 03/13/2020
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06-23-2018, 08:52 PM
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Join Date: Oct 2010
Location: Phoenix, AZ
Posts: 2,818
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One thing about fiberglass: it is very forgiving. If you don?t like the result sand it down and put another layer on. Practice first and learn where to use epoxy, slurry, flock and paste. Don?t use Kevlar cloth as it is tough to cut and sand.
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06-24-2018, 12:05 PM
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Join Date: Mar 2005
Location: Huntsville, AL
Posts: 426
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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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Dave
RV12 N951DZ
First Flight 9/23/16!
No paint yet. Working on a scheme with John Deere colors or accents.
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06-24-2018, 12:52 PM
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Join Date: Aug 2013
Location: Lucerne,Ca
Posts: 272
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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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06-24-2018, 12:56 PM
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Join Date: Aug 2013
Location: Lucerne,Ca
Posts: 272
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RV-12
Vikingaircraftengines, look uner sale then RV-12
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06-24-2018, 01:29 PM
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Join Date: Oct 2010
Location: La Feria Texas
Posts: 3,822
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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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06-24-2018, 09:24 PM
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Join Date: Apr 2008
Location: Medford, OR
Posts: 287
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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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