Re: Re: what is difficult in building indoor duration

From: Tapio Linkosalo <tapio.linkosalo_at_iki.fi>
Date: Thu, 18 Oct 2012 07:41:19 +0300

On 17.10.2012 23:09, Nick Ray wrote:
> All three use formed fiberglass tubes and carbon layup screw holders.
> The vacuum bagging process alone is cost prohibitive for many people.
> One has to make 6 or 7 composite hubs to break even when compared to the
> cost of buying them from Treger. Maybe someone would like to produce V/P
> kits where the base components are formed and then sent out with
> assembly instructions.
>

You do not need vacuum bagging for producing composite parts. I have had
one for ages, but hate to use it as it takes quite some effort to set up
and keep running while the epoxy sets. Therefore I mostly try to figure
out ways to clamp the components together while the epoxy cures. For
instance, the carbon fork for the VP is made on a simple "male" mold
sanded out of a piece of plywood (rounded top edge) and covered in
packing tape. Onto this I wrap a sandwich of carbon-balsa-carbon between
plastic sheets, put another piece of balsawood on top, then use a length
of rubber band to tie the packet tightly against the mold. Put it to a
warm place to set, then dremel the individual forks out of the longer
piece. Easier to do than to write down.



-Tapio-
Received on Wed Oct 17 2012 - 21:41:26 CEST