Copyright © 2012 By Farrier Marine Page 32
FARRIER MARINE
fail.
Beam
Compression Pad must fill this gap
Hull
Upper Folding Strut
This would not cause a serious beam problem as the
beams then simply move inboard to bear against the hull
again. The boat is not threatened structurally. However,
repairing an U.F.S. mounting point is difficult and expen-
sive.
The plastic compression pads should be full width of
the beam and bear evenly against both beam and hull to
avoid any point loading. These pads should be checked
periodically and adjusted or replaced if necessary.
BEAM BOLTS
These should always be in place and tightened be-
fore going sailing. Otherwise the Upper Folding Struts
can again be overloaded as above, due to the beam inner
end being forced up slightly by sailing loads.
It is also possible, but unlikely, for a Beam bolt to gall
and seize in a bolt pad, which can prevent you from
folding up the boat. If this happens, then you can still fold
up the boat by simply releasing the bolt pad nuts from
inside, or cutting off the Beam bolt head. To avoid this,
keep the threads well lubricated with a Teflon grease.
WINGNETS
Take care not to step near the inner ends of the nets
on the sides next to beams where lashing cannot be used
in order to allow easy folding. Your foot may go through
this gap. This area can be lashed if you wish, but should
you forget to undo when folding, the eyelets in the nets
will be pulled out.
Beams have been improved on later designs such
as F-22, F-32 and F-33, to where their join flanges cover
this gap, making it much harder to step through.
Any humming can be reduced or eliminated with a little
fine tuning by filing or sanding the trailing edge of the foil
concerned as follows:
30° or smaller
Better
Good
Better if
The bottom left shape is probably the easiest to
achieve in practice, and the least likely to be damaged.
SHROUD OR STAY TENSIONERS
When leaving the boat for any length of time with
floats extended, the shroud/stay tensioners (if used)
should be let off. If not, the high tension could slowly bend
the boat, due to 'creep' characteristics. This rule applies
to all boats with adjustable backstays.
When initially setting up, stays with such tensioners
must be adjusted to be just long enough to reach chain-
plate. There will then only be a small deflection when the
tensioners are applied. Avoid the shrouds being too long
as the resulting large deflection will put too much load on
the tensioners, and this could put the mast at risk.
RIGHT
WRONG
Too much load on
tensioner - could slip
or fail causing loss of
mast
Too much
deflection,
tighten shroud
turnbuckle
Shroud
turnbuckle
adjusted for
minimum
deflection
Low load on
tensioner
When sailing offshore, or for long periods, it is best and
safest to fully tension the cap shrouds with the turnbuck-
les, so there is no reliance on the tensioners.
COMPRESSION PADS
These are fitted to the ends of the beams, to eliminate
any gap or movement between the beam ends and the
pads in the hull.
Do not omit or remove
these pads, as this would
cause the high compression loads in this area to be
directed through the Upper Folding Struts, which are not
designed to be strong enough for such loads. They are
designed for folding loads only, and the end mounts may
Wingnet gap and lashing to beam is completely covered on
this F-33, making the nets safer. But still take care.
Содержание F-22
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