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Centrecase showing the plastic support inserts
for the centreboard. Slots cut in the alloy support sections enable
the inserts to be adjusted, allowing the centreboard to be set up
perfectly vertical and with no sideways slop.
Had to think
long and hard if this arangement to control the centreboard in a
vertical position broke rule D 3.2(c). Decided that a 200 x 20mm
long flat edge was not a rocking point and that, by their mere
presence, prevents the centreboard from rocking anyway.
The
alloy angle sections also stiffen the centrecase capping which thus
does not need bracing back to the cockpit sides.
Compass is
electronic and while "not yet" legal (as from
November 08 they are legal for use in a Finn - yippee) ,
I use one as it has a bigger display, I cant see the numbers too
well on the normal type (being an old fellow with poor eye
sight). Its doen't give me any other competitive advantage
(and they cost no more than a comparable quality standard
compass). |
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Unbelievable how the simple modification of
placing the kicker idler pulley on the boom can make such a
difference to the amount of extra control one gains over the
boom. Pop rivetted an extra hanger on the boom (at an angle), added
a pulley, lengthened the kicker rope and it was done.
With
the extra set up control of a sliding centre board bolt comes the
need to test to see which mast location, leech tension, centreboard
postion versus wind strength and wave pattern works best.
Luckly Dan Slater has provided some starting
postions. Now need to go out and test. |
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Rudder was an old wooden Vanguard model. Trailing
and bottom edges was routered off and replaced with fibreglass. Much
sturdier and workable set up compared with the wooden edges of the
original.
Gudgeons are plastic and screwed into rebated
slots. Carbon fibred over to secure them in place. When using
plastics in these situations there will not be a chemical bond
between the surfaces. To increase the mechanical bond, dimple the
plastic like a golf ball and as the carbon fibre is vacuumed into
place it will follow the contours of the dimpled surface and present
a very strong bond.
Carbon fibre tiller and sleeve keeps the
weight down. Total rudder weight 4.1kg. |
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Completed Finn was measured and ISAF
certified (Finn number 3034). Final weight was spot on the 119 kg
without correctors. Swing was a less then perfect result sitting a
bit higher on the chart than I would have liked but within the
bounds of reason. |
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Things I would do Differently |
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