IMPORTANT POINTS ON RIGGING AND TUNING
The Farr 740 Sport was designed as a high performance
go fast one design, trailerable yacht, capable
of winning line honours against similar sized boats and
also able to be highly competitive under J.O.G. rating.
The Sport principle has resulted in a design
fully equipped with current race standards including a
fractional twin spreader rig with running backstays, large
cockpit and complete sheeting adjustment.
With the high level of competition in trailer yachting
events and J.O.G. events it is essential that the Farr
740 Sports like any other yacht must be well prepared.
The following comments are aimed at helping you get the
best out of your Farr 740 Sport and enjoying it to the
maximum.
EQUIPMENT AND BOAT PREPARATION
The following points are important:
1. When attaching stays to chainplates:-
Lower stays - inside hole
Upper stays - forward hole
Intermediate stays - aft hole.
2. Tape all stays together at the bottom otherwise
it is easy to band the rigging screws when lifting the
mast.
3. Drop weight of keel onto trailer when the boat is
being trailed or stored.
4. Lock keel down whilst sailing.
5. When lowering keel, put three turns on winch.
6. Unlock keel before winching keel up.
7. Check and service keel lifting gear regularly.
CORRECT SETTING UP OF MAST AND STANDING RIGGING.
This exercise is quite simple and once done needs only
periodic checking. Firstly the mast must be centred
(set vertical athwartships) from side stay chainplates.
When mast is centred the correct fore and aft rake is
obtained by the following procedure:-
1. Attach measuring tape to a slug slide and attach
slide to the main halyard.
2. Pull the slide up the mast to I which
is 7.560m from deck level (where base of tabernacle
meets the deck). Cleat off halyard to hold tape at this
point.
3. Take tape to aft edge of the aft deck on the centreline
and this should measure approximately 9.160m.
4. When measuring, pull both running backstays on firmly
and let all tension off permanent backstay.
5. Adjust forestay tension until correct rake measurement
is achieved.
We have found that the mast should be set up quite
straight athwartships so that the rig is kept on centreline
when sailing and this means more precise mainsail leech
control. Any mast movement not specifically under the
sail trimmers control (eg. tip fall off) means
uncontrollable changes in sail shape.
We start by setting up the upper stays quite firm and
the lower stays quite tight and tighten the intermediate
stays enough to get the mast straight. The mast should
be dead straight to the hounds with enough tension on
the upper shrouds to prevent the leeward one going slack
(when sailing in 15 knot breeze).
RIGGING.
The mast stays and halyards can all be left in operating
positions once the mast is set up.
As stated before, it is important to tape the three
sidestays together just above the chainplate to prevent
bending the turnbuckles.
Two people can comfortably lift the mast with one pulling
the forestay and the other lifting the mast from a position
on top of the pop-top. Make sure the sliding hatch is
shut or you may loose your footing in the middle of
the lifting operation.
You will find that by easing off the backstays and
permanent backstay, the forestay can be easily attached
to the forestay fittings. (Tape clip into forestay toggle
pin to prevent it catching on things). Pull on backstay
and the rigging of the mast is complete.
SAIL TRIM.
In light air and lumpy water we set the rig up for maximum
power. The genoa leads are set for an even luff break
with the sail leech about 75mm (3 inches)off the spreaders.
Don't pull the halyard up too tight; generate as much
power in the genoa without losing pointing ability!
In these conditions no backstay should be used and the
traveller should be pulled appproximately 150mm (6 inches)
to windward of centreline and mainsheet should not be
pulled on too hard.
The headsail inventory on the Farr 740 Sport comprises
three sails:-
As a guide we have found that in flat water the No.1.
Genoa can be carried in winds up to 15 knots apparent.
This sail is reasonably full and together with the main
at maximum fullness is quite effective in light lumpy
conditions. As we approach the top of the wind range
the mainsail is flattened and the running backstays
tightened to keep the genoa flat. Over 15 knots apparent
we change to the No.2. genoa which is used up to 20
knots apparent with the mainsail quite flat at this
point.
The next step is to reef the No.2. genoa which is carried
up to 25 knots apparent. Before reefing the main we
change to the No.3. and in most conditions we have found
this better than carrying the No.2. with a reef in the
main. We have not had the opportunity to compare keeping
the reefed No.2. and reefing the main with changing
to the No.3. and keeping the mainsail full size, but
we feel that in pointing conditions the No.3. and full
main would be better and in driving conditions the reefed
No.2. and reefed main could be better.
If there is a big lumpy sea we feel that the No.3.
should not be oversheeted and mainsheet should be eased
a little to obtain maximum boat speed through the seas.
It is important to get the boat moving in these conditions
so that the boat can be easily feathered into the gusts
and maximum control over and through the seas can be
obtained. Traveller should be well down in these conditions.
CREW.
For serious racing four people are necessary. The weight
of the crew is not critical although in heavy breezes
every ounce on the windward rail is an advantage and
we have found that five in heavy conditions is advantageous
for on the wind sailing. The crew should be kept as
close together as possible with the foremost crew still
aft of the cabin. The skipper should be aft of the traveller
with the mainsheet hand immediately forward of him so
he can work the traveller and mainsheet. The other two
crew should be as far out to windward and as close as
possible together next to the mainsheet hand. In some
conditions we have found it desirable to carry one crew
behind the skipper. This is particularly so if any extra
ballast is being carried for rating purposes. For reaching
we move the crew aft and try to keep the boat as flat
as possible. In running conditions in light weather
we move crew weight well forward to keep the stern out
of the water. In fresh conditions we move well aft.
When setting spinnakers in fresh conditions remember
to counter the forward hand's weight when he is on the
foredeck.
SAILING DOWNWIND.
When reaching it is very important to sheet the sail
as far outboard as possible. To achieve this we clip
the block with a snap shackle to the outboard sheeting
position for the respective headsails and run a spare
sheet. In most conditions the spinnaker halyard should
be eased about 200mm (8inches). The backstays should
be eased off in lighter conditions and pulled on just
tight as the breeze freshens. When carrying the spinnaker
on a tight run in fresh conditions we get the crew as
far to windward and aft as possible. Have one man working
the mainsheet and the other on the spinnaker sheet.
The helmsman should be steering the boat down in the
puffs and up in the lulls and the crew should be coordinating
with him. Good team work in these conditions can have
remarkable results.
When running, the spinnaker should be trimmed square
to the wind with the clews of the sail level. Keep the
pole as far aft as possible, in heavy winds the halyard
should be pulled right up and the sheets should be pulled
hard down with the barberhaulers. When steering downwind
the goal is to maintain the speed necessary to catch
the waves. As on the reaches work down in the puffs
and up in the lulls.
From a self righting point of view the keel is obviously
most effective in the full down position and we recommend
it be kept in this position. However, in light breezes
running it can be pulled up for improved performance
unless racing rules forbid this tactic. The FARR 740
Sport surfs very easily and every effort to should be
made to catch every wave.
TACKING.
We find it easier to have one person tack the headsail.
This leaves the other two crew free to concentrate on
getting their weight across at the right time.
In conditions heavy enough to have everybody on the
rail one person should prepare the headsail sheet and
just prior to the helmsman dropping the helm he moves
into the cockpit with one hand on the 'old' sheet and
one on the 'new' which has only two turns on the winch.
He also has to make sure that the old sheet is ready
to run free. As soon as the jib starts to luff the jib
man throws off the old sheet and trims the new one with
arms length pull which can normally trim all but the
last 50mm (2 inches). For the final trim he sits on
the high side of the cockpit and uses his legs and lower
back to pull. If the headsail needs to be trimmed any
further the winch can be used giving the boat a little
time to accelerate before being brought too hard on
the wind. Most of the time the winch is only used to
make fine adjustments. We don't cross sheets because
we have found it too messy. We sometimes bring the tail
of the jib up to the windward winch if conditions require
constant trimming on a long leg.
SPINNAKER SETS.
We set from the main hatch and set up the sheets and
halyard on the right side before the start if possible.
We clip the snap shackles together in a way which enables
you to only snap one on to the life-lines before attaching
to the sail and also to enable you to progressively
attach each one to the sail without needing three hands
ie. attach sheet snap shackles to head of halyard snap
shackle. For spinnaker launching we suggest that the
bag (turtle) be clipped on two saddles across the companionway
so the spinnaker can be put back into the bag when it
is dropped.
We prefer to carry the spinnaker pole on the main boom
so the boom topping lift and downhaul can be permanently
attached. As you approach the mark the forward hand
sets the pole after placing the guy in the parrot's
beak - as he does this the topping lift is pulled up
to a premarked position and when the pole is attached
to the mast the downhaul is pulled on tight. Once you
are abeam of the mark and bearing off one crew stands
up and pulls the halyard while the other crew member
makes sure the spinnaker is thrown clear of the hatchway.
The skipper pulls the guy in quickly whilst the forward
hand ensures the pole does not come aft.
The most common mistake is not to pull the guy around
a little before the halyard goes up which causes the
kite to twist and hang up under the headsail when it
is eased. Keep the headsail sheeted until the spinnaker
is pulled around.
SPINNAKER TAKEDOWN.
Before takedown make sure you are all ready for the
next leg of the course. This will probably be an on
the wind leg - halyards up, cunningham on, outhaul on.
When approximately two boat lengths from the mark we
let the halyard go making sure it is free to run. This
lets the spinnaker blow away from the boat and not drag
against the headsail. At the same time ease the after
guy right off. Someone already has the other sheet and
begins gathering the sail into the hatchway the moment
the other guy is released. When done properly the sail
should stay clear of the headsail leads and sheets so
the headsail sheet should be running over the top of
the pole in front of the topping lift so that when the
topping lift is let off and the outboard end drops you
can immediately tack even with the spinnaker pole still
on the mast.
JYBING.
When jybing, 'end-for-end' the pole. The most important
things to remember are to square the pole as you bear
off and to ease the old sheet slightly as soon as the
inboard end of the pole is taken off the mast. As the
bow swings through the wind the new guy should come
to the forward hand and be attached to the pole pushed
out and attached to the mast in one quick motion.
While the forward hand is jybing the pole one crew
looks after the main, grabbing all the sheet in one
handful and throwing the boom over as the pole is attached
to the mast. The other crew attend to the guy and sheet
with easing the new/old sheet and trimming the new sheet.
The skipper looks after the runners.
In fresh conditions we have found it easier to jybe
the spinnaker first and gybe the main as soon as the
parrot's beak is on the mast. This allows the forward
hand to come aft and help with the completion of the
jybe. It is essential that the new sheet is not over
eased and also that the whole operation is carried out
as quickly as possible to avoid the spinnaker twisting
around the forestay. In fresh conditions it may pay
to keep the headsail up to avoid the twisting.
KEEL.
If the boat is to be used in open water conditions,
as a boat of this type will tend to be, it is essential
that the keel should be in its down position and locked
at all times. The practice of raising keels when sailing
downwind whilst being acceptable when racing in reasonable
conditions with an experienced crew is not a concept
that should be encouraged in family sailing or with
less experienced crews; it is done at the owner's risk.
This is a quote from the original papers and lifting
the keel isn't allowed in races now; as far as I know?
RUNNERS.
The runners are a simple but very necessary part of
the in-line spreader rig. Don't get confused by them
and be prepared to use them a lot because they allow
tremendous control of the mast and sail shape.
The runner system comprise an 8:1 purchase with a fine
adjustment and a course adjustment.
Tacking
When tacking we recommend that the course adjustment
be cleated and only the fine adjustment be worked by
the skipper, ie. when going into the tack the skipper
lets go the cleat and pulls on the new runner as he
goes through the tack. This takes a little getting used
to but we have found it can be done quite efficiently.
It is important to mark both course and fine adjustments
so you know where you are pulling it on to each time.
On the wind in a good breeze we have found that the
runners should be pulled on hard.
When bearing off make sure the course adjustment is
eased so the main can be eased.
Downwind:
The windward runner and the permanent backstay can
be eased off when running downwind in light to moderate
winds to enable the mast to lean forward a reasonable
amount. In fresher breezes don't ease them off too far
as they are all that is holding the mast up.
Jybing:
When jybing it is just as important to let go the old
runner as it is to get on the new one because it is
critical that the mainsail be allowed to ease right
out when you come out of a jybe. Before jybing we pull
in as much of the new runner as possible so there is
only three or four feet (about a metre)to pull up as
the main goes across. In light to moderate conditions
we have found the skipper can comfortably handle the
runners but in fresh conditions, it is desirable to
have another crew concentrating only on getting the
the new runner in.
Remember, there is a permanent backstay holding the
rig up so concentrating on a tidy jybe rather than only
on the runners is important. We suggest some practice
in moderate conditions is best so you are prepared for
the fresh weather jybing.
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