From: "Daniel Armstrong" <daniel.armstrong@...>
Date: Monday, September 1, 2003 5:41 AM
Subject: Re: [BugHLG] Some silly questions...
Date: Monday, September 1, 2003 5:41 AM
Subject: Re: [BugHLG] Some silly questions...
Carbon fibre is black in colour, fibreglass is normally white. Carbon fibre
is considerably stronger than fibreglass and more expensive
weight-for-weight.
The engineer's theory of bending shows that, when used as a spar, a tube can
carry almost the same weight as a solid rod for a substantial weight saving.
If you sand a carbon rod you should get a fine black powder (don't breathe
it in), with fibreglass it will normally be a fairly coarse white powder
with what appears to be little fibres in it.
Regards
Dan
> This question has been bugging me a long time and I have been too
> embarrassed to ask. What is the difference between carbon fiber and
> fiberglass? I can I tell? Which one is heavier? Is tube better than
> solid rod for wing spar? I guess it must be lighter and more rigid? I
> suspect my solid rod spar is actually fiberglass although I don't
> know enough to tell.
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