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Registered Member #2431
Joined: Tue Oct 13 2009, 09:47PM
Location: Chico, CA. USA
Posts: 5639
Differences between good fiberglass, and good Carbon fiber.
Does anyone know the differences between good well-made fiberglass and the good well-made carbon fiber? Are these fractional differences noticable/worth-it at our small 18 inch) UAV scale? I know carbon fiber is superior at the large scale as in manned air and space craft.
I want to keep the cost and difficulty down while still coming close to what carbon fiber would be. I've done fiberglass before, but not to much of the carbon fiber.
Registered Member #3414
Joined: Sun Nov 14 2010, 05:05PM
Location: UK
Posts: 4245
If you are having to ask these questions, you will be better off using glass fibre.
You'll probably want 'S' type woven glass (woven rovings)
You need to know exactly what you are doing in order to take advantage of the properties of carbon.
I assume you'll be using a wet lay-up, with epoxy, rather than pre-preg, but you will probably still benefit from vacuum bagging if you have access to a pump.
Registered Member #2431
Joined: Tue Oct 13 2009, 09:47PM
Location: Chico, CA. USA
Posts: 5639
Ash Small wrote ...
If you are having to ask these questions, you will be better off using glass fibre.
I was afraid someone was going to say that.
Ash Small wrote ...
You'll probably want 'S' type woven glass (woven rovings)
like this pic:
Ash Small wrote ...
You need to know exactly what you are doing in order to take advantage of the properties of carbon.
elaborate please...
Ash Small wrote ...
I assume you'll be using a wet lay-up, with epoxy, rather than pre-preg, but you will probably still benefit from vacuum bagging if you have access to a pump.
Yes as I make mostly flat sheet or compression molding for fiber glass.
Registered Member #3414
Joined: Sun Nov 14 2010, 05:05PM
Location: UK
Posts: 4245
Patrick wrote ...
.
Ash Small wrote ...
You need to know exactly what you are doing in order to take advantage of the properties of carbon.
elaborate please...
Ash Small wrote ...
What is this for?
Go here -> , youll see.
I'll elaborate later, for now I'd suggest using glass, with a view to maybe 'moving to carbon' once you've got everything else (electronics, etc) sorted out.
(EDIT: Carbon won't neccesarily make it any lighter, but, if done properly, may make it stronger)
Registered Member #3414
Joined: Sun Nov 14 2010, 05:05PM
Location: UK
Posts: 4245
Patrick wrote ...
Ok that sounds good , pic posted above.
You're on the right lines there, maybe a finer weave/lighter cloth....but get the method 'sorted' using glass before moving to carbon. (Just my 2 cent's worth)
Registered Member #3414
Joined: Sun Nov 14 2010, 05:05PM
Location: UK
Posts: 4245
Patrick wrote ...
Can you give me an american source to buy this kind of stuff, i mostly buy Tap plastics and automotive FG stuff.
I'll look into it tomorrow (I've had a drink or three now), but West Resins might be a good starting point for a google search (I know they do resins, not re-inforcements, but it still might be a good starting point).
Registered Member #2431
Joined: Tue Oct 13 2009, 09:47PM
Location: Chico, CA. USA
Posts: 5639
Ash Small wrote ...
Patrick wrote ...
Can you give me an american source to buy this kind of stuff, i mostly buy Tap plastics and automotive FG stuff.
I'll look into it tomorrow (I've had a drink or three now), but West Resins might be a good starting point for a google search (I know they do resins, not re-inforcements, but it still might be a good starting point).
Registered Member #2939
Joined: Fri Jun 25 2010, 04:25AM
Location:
Posts: 615
I bought some carbon/kevlar tube for my kayak paddle from here They've got all sorts : glass, carbon , kevlar, basalt, and mixed materials. In cloth, tube, etc.
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Differences between good fiberglass, and good Carbon fiber.
