We made our own from carbon.
Weighs next to nothing, has about a one tonne/ton breaking load and is glued
on. It can be beefed up for high load points if required. We also
made some plastic cars to fit on it. Both work extremely well.
Unfortunately the track is tricky to make, so costs $150/m. Probably not
too bad if you consider the cost of alloy track, plus backing plate, plus
fastenings and labour. The cars are $50 each.
----- Original Message -----
Sent: Friday, February 10, 2006 4:54
Subject: [harryproa] Re: Visionarry mast
Did you make your own carbon rcb track or attach one that
can be bought?
--- In email@example.com,
"Rob Denney" <proa@i...>
> > Looks fantastic, Mark has done
an incredibly good job.
> I really hope to see it sailing now
> He most certainly
has. Sailing trials should be next week, all
> Some details:
> Mast length:
> Above deck: 16m/53'
> Diameter at base:
> Diameter at tip: 100mm/4"
> Safety factor: 2.5
Designed weight of bare tube: 119 kgs/262 lbs
> Actual weight of bare
tube: 117 kgs/257 lbs
> Designed deflection with 153 kgs/337 lbs midway
along mast: 178mm/7"
> Actual deflection with 153 kgs midway along the
> Designed tip deflection at capsize: 2.9m/9'8"
Actual deflection at capsize: yet to be established!
> Cost of mast
painted with top and bottom fittings:
> Additional cost for lightweight carbon rcb track bonded
Yahoo! Groups Links