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Old 21-04-2010, 02:43 PM
gbeal
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gbeal is offline
 
Join Date: Oct 2004
Location: New Zealand
Posts: 4,346
Not too sure I agree that the sail area is less when you pull it taut, being light (relatively) and with all that "sail" means any wind moves it about. If you are in a total dark area, the truss without would be fine.
If you have a tube ~950 long you are quids in, mine is a tad over 1200mm.
C/F is simple, it is just a poncey fiberglass really. It is a cloth that needs resin, simple as that. In my case I used an old sonotube tube that I parred the outer layers off, reducing the thickness by perhaps 3 - 4 mm, and attached the layer(s) of C/F cloth to the cardboard tube directly.
The cost (here) was about NZ$150 for the cloth, and about $70 for the resin, add more for disposable gloves, sacrificial paintbrushes etc.
CF truss was different, I purchased the 22mm tubing direct and cut it to length as required this being easier than the solid C/F tube.
Gary
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