"asdf" wrote in
:

a friend of mine has an open canoe made of glass 17 foot 6 inches
long, the boat was made in the early 70's by a neighbour to his own
design, following a conversation about the weight of it over a beer We
have the go ahead to use the hull as a mould. this canoe is ideal but
far too heavy i.e 5mm thick fibre glass. what i need to know is what
reduction in weight could I get by using kelvar or carbon fibre. I am
looking for something that can be loaded on the roof of an european
car by one person easily. one of the lads has an oldtown canoe the
same size. But is a bit to heavy for one person, the boat does not
have to do rapids is used on slow rivers just for fishing ie towed
across lake by a boat that cant go down this river. this is a great
canoe but it needs more people to lift it than can fit in it.
any ideas would be welcome



Checkout the book:


Building Your Kevlar Canoe by James Moran

do a search at amazon for kevlar and youll find it.

--
EvilTwig


"A common mistake people make when trying to design something
completely foolproof is to underestimate the ingenuity of complete
fools."---- Douglas Adams

ET ) writes:

Checkout the book:


Building Your Kevlar Canoe by James Moran

do a search at amazon for kevlar and youll find it.

you can "check out" the book from the Ottawa public library.

the person who mentioned the flexibility is correct. canoes have
tumblehome, ie the top is narrower than the widest point. the hull or
the mould has to flex, I don't know which or how to tell how much.


--
------------------------------------------------------------------------------
William R Watt National Capital FreeNet Ottawa's free community network
homepage: www.ncf.ca/~ag384/top.htm
warning: non-freenet email must have "notspam" in subject or it's returned

(William R. Watt) wrote in
:

ET ) writes:

Checkout the book:


Building Your Kevlar Canoe by James Moran

do a search at amazon for kevlar and youll find it.

you can "check out" the book from the Ottawa public library.

the person who mentioned the flexibility is correct. canoes have
tumblehome, ie the top is narrower than the widest point. the hull or
the mould has to flex, I don't know which or how to tell how much.


--
----------------------------------------------------------------------
-
------- William R Watt National Capital FreeNet Ottawa's free
community network homepage: www.ncf.ca/~ag384/top.htm
warning: non-freenet email must have "notspam" in subject or it's
returned

In Moran's book the ends are left "open" ie un-connected until the boat
is removed from the mold. This adds significantly to the flexibility.

--
EvilTwig


"A common mistake people make when trying to design something
completely foolproof is to underestimate the ingenuity of complete
fools."---- Douglas Adams