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1988 Letter to the Bobcat and Catalac Association from John Lack
A letter from John - with News and Recommendations.
Dear Association Member,
Well, here we are, yet another year flown past and still without the association
spares listing. Whilst I am pleased to report that we have been so busy this
last season, it is not particularly helpful to you, nor indeed of any assistance
to my turnover. My apologies!
As the year aged towards its close, I learnt that a winding up order had been
placed against Catalac Cruising Catamarans Ltd. Lest reprisals be taken, I
understand that this does not affect John Williams, the contracted boat builder.
So again "production" has ceased on the Catalac range.
Whilst we obviously promote and exhibit a strong association to the Catalac and
will continue to do so, we have branched out at a tangent and formed Quay
Rigging Ltd. with the added bonus of being selected Kemp Mast Service Agents,
covering Lymington to Weymouth.
It is sheer coincidence, and certainly not a promotion for Quay Rigging, that my
annual hints and tips should contain a section on rigging, following failure
noted during this last season. If space allows, I have also included a section
describing rigging for the modern yacht, which I hope will prove interesting.
Well, enough of the chatter head down to our findings and comments.
YANMAR ENGINES - A slow trickle of gearbox problems still recur,
associated to slipping between the drive cones. This is normally due to
incorrect connection between the Morse control cable and the gear box lever on
the earlier 7.5 h.p. models, which most of you have. The spring loaded connector
(sprung loaded) should be on the bottom hole of the gearbox lever. We have
encountered many with seized connectors, so please do check yours and make sure
the spring system is free-moving and well greased. The later models have a
rectangular solid connector.
Another cause has been when the controls have been "locked" into forward gear
whilst sailing to "save wear on the shaft and stern gear". You should have it
"locked" in ASTERN. Incidentally, if you are putting the engine into gear
whilst sailing to avoid the "rattle", then you ought to check your cutless
bearings and the state of the packing in the stuffing box.
We noted last season, associated to the age of the installation, that the Yanmar
soft mounts are starting to delaminate, so I would suggest that these are
checked as part of your winter programme. Replacements are not cheap but,
compared to an engine potentially running amok in the engine space, the cost
savings are there!!
Loom connectors are proving another source of unanticipated aggravation. These
are the plug/socket connectors sited adjacent to the port aft engine mount. Lack
of inspection and regular greasing has proved "fatal". Whilst you are down in
the depths, liberally covered in grease, cursing the amount of gear loosely
stowed there, don't forget the bilge pumps and float switches under the engines.
Now is the time to check connections and clear away any accumulated debris.
BREAK-INs..... and the doors of 9 metres seem to suffer worst. Obviously,
there is very little that can be done to stop the dedicated thief but, on the
9M. the addition of a brass hasp and staple fitted to the door and sliding hatch
face, will inhibit the use of a jimmy to spring the door open or fracture the
laminate at the top section, for access to the lock internally.
Derek Oakley of Batticat 11 reported entry to his 8M. via the forward "escape"
hatches, where the s.s. pins to the black nylon hinges were simply pushed out.
Mr. Oakley is considering gluing the pins in, but I consider, without the pivot
facility available to both halves of the hinge, failure may occur to the nylon.
My immediate thought at the time was to fit a further thumbscrew device (as used
to lock these hatches at present) under the hinge end of the hatch. Has anyone
any better ideas please? Since drafting this letter, Mr. Oakley has suggested
that a headed rod with a split ring or pin might at least slow the potential
intruder down enough to make him give up.
STANDING RIGGING FAILURES ... fortunately, no masts down unaided that I
know of, except for one whom I will not name, for fear of embarrassment, but
whom I know well enough for me to pass on to you all for the purpose of
education, DO NOT FORGET TO DO UP THE BOTTLESCREW under the Rotostay
prior to going home reflecting on your achievements in raising the mast
manually. I didn't ask, when required to quote for a new wheelhouse!
The original builders undertook the standing rigging in-house, using a talurit
(copper) swage to compress the wire end onto the wire body, thus holding the s.s.
thimble into place. The wire construction is 1 x 19 and, by the very nature of
the job it ws intended to do, is not at all flexible, (7 x 19 and 7x7 being
those more commonly used for wire\rope halliards, steering wires etc.)
Accordingly, a great deal of unfair strain and misalignment of the separate
strands was "encountered" at the outset. By age process, these tight curves with
the stress put on them are starting to break up, not only the wire strands
themselves but the thimbles are "fracturing" across the body. So please, all of
you, do check yours. Not just at deck level, up aloft as well. Remember, a
replacement mast is now over £1,000, let along the damage it can cause, not only
to the craft, but also to its occupants.
Roll swage is now the best method of "joining" wire to fittings, as described
further on. If in any doubt, please do phone or write for any advice I can give.
John L.
How we earn a living
Amberdell Computer Technologies
Merritt Island, FL