T.R | Title | User | Personal Name | Date | Lines |
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866.1 | another theory | MSCSSE::BERENS | Alan Berens | Tue Jun 14 1988 18:34 | 27 |
| Ouch. Glad you weren't more seriously hurt.
The line leading onto a winch should lead slightly upward onto the winch
drum. This ensures that the load on the line pulls the winch drum
downward onto the winch base. There should be a (small) gap between the
drum and the snap ring (circlip) keeping the drum on the winch mainshaft
when the winch is under load. The snap ring isn't, I suspect, strong
enough to keep the winch drum on the mainshaft against a large upward
load. From your description of your accident, I wonder if you pulled
sideways on the halyard between the winch and the halyard exit slot
(assuming internal halyards). Or does the halyard lead down onto the
winch drum? If the snap ring weren't fully seated in its groove, it
might easily slip off, allowing the drum to come off. A fully seated
snap ring should withstand a few hundred pounds of side load. Unless you
grossly distorted the snap ring in removing it, it shouldn't have been
weakened. If the snap ring were fully seated in its groove, and failed,
I would think that you'd see some damage to the groove. If the groove is
undamaged (sharp corner on the upper edge), then I'd guess the snap ring
didn't fully seat. I'd also guess that Barient will claim user error
unless presented evidence to the contrary (which will be hard to find).
The Barient model number indicates (or used to) the safe working load on
the winch. As I recall, the 10P has a plastic drum or at least some
plastic parts. You might want to consider upgrading to a larger, all
metal winch. I'd consider a Barient 10 a tad small for your boat (but
then I am a believer in big winches and little effort).
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866.2 | Contact Barient | CAMELS::MCGARRY | | Wed Jun 15 1988 10:08 | 8 |
|
A friend of mine owns a O'DAY 28 and his mast winch froze, he
contacted Barient and they sent him a new winch at no cost, you
might try contacting them about your incident.
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866.3 | | MILVAX::HO | | Wed Jun 15 1988 10:37 | 11 |
| I recommend sending the entire account in .0 to Barient. As a minimum
you should expect a new winch at no cost. Twelve stitches isn't
a trivial injury and there was potential for more. Barient should
be keenly aware of the potential for litigation here and should
be more than willing to make amends.
It's gotta be worth lots to them not to have .0 appear in the letters
to the editors section of Yachting, Sail, or Cruising World.
- gene ho
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866.4 | Barients are okay | AKOV12::DJOHNSTON | | Wed Jun 15 1988 11:04 | 19 |
| Don't know if this would have prevented the injury, but I always
suggest to friends to remove the winches from the side of the mast
and relocate it to the deck with the halyard running through a turning
block. The expense is minimal and seems to prevent the incidence
of main halyard snafus. Besides getting your face out of the way
it provides a much better grinding position with the body on top
of the winch.
Sounds like a freak accident. We have Barients on Fat Tuesday (albeit
in much larger sizes) and love 'em.
While we're on the subject of trashing bodies on boats, I have a
favorite piece of advice. Try to get in the habit of avoiding putting
your body inside the "vee" formed by a line under load going through
a turning block. This way when the block explodes you will not
be in the way. Sounds stupid until you see it happen. Not pretty.
Dave
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866.5 | | GRAMPS::BAILEY | May the 4 winds blow u safely home | Wed Jun 15 1988 12:31 | 20 |
| RE .4
Good advice on the turning blocks. We had a genoa car blow last
year during one of those late season races when the wind was doing
25 knots and the #3 was cranked in tight. Never even saw the thing
land it went so high. Thank GOD nobody had their body in the way.
And when you look at the car and figure out how it's put together,
all you gotta do is have that little screw in the side back out
and it's gonna blow out on ya.
We also have Barients on WAGS (eight of 'em) and have never experienced
any problems. However, I will tell you that after reading this entry
I'm going to double check the lock rings on every one of them tomorrow
night before we race, just to be on the safe side.
Paranoid ??? Maybe, but it's better than having a failure when
you got the thing under load.
... Bob
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866.6 | Consider reuse fatigue | MENTOR::REG | I fixed the boat; So, who want to ski ? | Wed Jun 15 1988 17:41 | 14 |
|
This is speculation (of course) but you said that you've done
some kind of maintenance on these winches/had them apart. Alan
has already said a snap ring that hadn't been seated completely
could fly out of its groove, however I believe snap rings fatigue
with reuse. I don't know what the recommended reuse count would
be, but I'm sure it would be easy to find out, just a suggestion.
I *_KNOW_* that cotter pins and Nyloc nuts have very low reuse counts,
personally I use 0 for cotter/split pins and 1 for Nylocs, they're
cheap enough, given the cost of everything else we do.
R
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866.7 | more | MSCSSE::BERENS | Alan Berens | Thu Jun 16 1988 00:17 | 19 |
| Barient snap rings come in two sizes (or so the contents of my repair
kit indicate). Assuming that the snap ring fails in shear, a reasonable
guess is that the smaller ring should withstand an 1800 pound load. The
snap ring is quite thin (0.023 inch) and flexible with a fairly large
diameter. It needs to be distorted very little to remove it from its
groove. (Many bearing retaining rings, etc, are quite thick and stiff
and are quite hard to remove without permanently distorting them.) I
would think that it could withstand quite a large number of careful
removals and reinstallations without damage. By the way, on some Barient
self-tailing winches (eg, 10 and 19), the arm that strips the line from
the winch drum is screwed onto the winch mainshaft and thus keeps the
winch drum on the shaft. The snap ring isn't really necessary on these
winches.
Re gear failure: It should be obvious, but I'll say it anyway. If a
block or winch or whatever fails under load, don't replace it with an
identical block, etc. Use the next size bigger. If the original failed,
an identical replacement will most likely fail, too.
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866.8 | be careful when assembling! | CADSYS::SCHUMANN | | Thu Jun 16 1988 15:00 | 11 |
| Offhand, (in the absence of any concrete evidence) this accident appears
to be the result of an improperly seated snap ring. Sometimes these rings
will seem to snap into place, but in reality, only one side has snapped
into the groove and the other side is still sitting on the shaft. It is
very important when re-assembling these systems to verify that the
retaining ring is perfectly seated. An audible click is not, by itself,
adequate evidence that the retaining ring is properly seated.
--RS
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866.9 | additional barient experience | TALLIS::RICKARD | | Thu Jun 16 1988 17:25 | 35 |
| A friend of mine had his new Barient 23st fly apart the first time
he had the boat out for a sail, luckily no one was hurt. What really
scared me about that particular accident is that they were using
that winch the previous day to hoist a man aloft to repair the mast
head fitting! I've always insisted on using two winches for hoisting
anyone aloft, one for the bosun's chair and the other attached
to a safety harness worn by the person going aloft. Having a winch
blow apart when I'm 50 feet off the deck is not my idea of a fun
time.
My Barient 23st winches seem to be very sturdy and the retaining
cap is screwed on and only comes off with some amount of force with
a special tool. The first year I took them apart I made the mistake
of taking all the pieces out, cleaning them and replacing them.
I had one piece upside down so the winch didn't work. Since then
I've been very careful to keep as much in place as possible, and
always keep the pieces oriented exactly as they were as I clean
and regrease them.
re .1: I'm glad you were not seriously injured, reading your account
of the incident put some healthy fear into me.
As I've been updating my boat for offshore racing I upgraded almost
all of the blocks with harken big boat blocks. The person responsible
for buying the original equipment for the Freedom 32s is a friend
of mine and gave me a real hard time about overkill. It seems to
me that the forces on those blocks are such that having some extra
strength is good insurance. I've stopped being intimidated by people
that seem to think they know everything and go with my gut, after
all it is I who am ultimately responsible for those stepping onto
my boat. I was appaled at the shackles that were put on the initial
harken blocks, the pins were bent and worn after one year!
Pam
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866.10 | Failure prone by design ? | MENTOR::REG | I fixed the boat; So, who want to ski ? | Thu Jun 16 1988 18:22 | 7 |
|
Hmmmm, if this was due to an incompletely seated or fatigued
snap ring, as we have speculated, then it would seem to be a design
problem. If it CAN BE assembled wrongly, or if repeated disassembly
and reassembly fatigues critical parts, then it is certainly a design
problem.
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866.11 | More on smaller Barient winches | MOORED::GERSTLE | Carl Gerstle | Fri Jun 17 1988 15:00 | 12 |
| I received this input from a non-noting friend ...
I have smaller Barient winches for my halyards. Mine have a push button
release rather than a screw, so if someone was sticking a finger in
they could release it. Then when a load is applied the drum could pull
off. Could something like that have been the cause?
Now its one more thing for the check list!
Bill
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866.12 | Winch Saga Continued | NBC::CARVER | John J. Carver | Tue Aug 02 1988 14:56 | 60 |
| Thanks to everyone for the inputs regarding my winching
accident. Here's whats happened since.....
I contacted Barient in Connecticut (now a part of IMI - International
Marine Industries ?) and, after hearing my story, they were very
nonsupportive about the incident. Basically, the gentleman I spoke
with implied that it HAD to have been my fault; and secondly, when
IMI acquired Barient a couple of years ago they COMPLETELY redesigned
the winch because of previous problems (he didn't elaborate) !
To paraphrase, and without using all the correct part terms,
Barient/IMI believes the "explosion" was caused by the internal
core portion of the winch "freezing" up. As the winch was turned, it
compressed the central core (?) until a point was reached that the
compression factor forced the core outward (since it couldn't turn
or get smaller). The winch will freeze if not properly maintained.
Barient will not consider a design flaw unless I can send them the
winch :>)
The new winches do not have this design flaw.
I had reordered a new replacement winch via Marine Speculators, but
upgraded the order to a all metal 10C version after talking with O'Day,
Isomat (they haven't changed winch size), and considering Alan's comments.
Incidentally, 10P refers to plastic internal parts; 10C to chrome;
and 10A to alloy.
When the winch arrived, I discovered it had five mounting holes
vs. four for the old version. So, I figured I had better order a
new winch pad too. Turned out I didn't need one. Although the holes
didn't match, there was enough "meat" on the existing pads to drill
new holes -- which I had Marblehead Trading Co. perform in case I had
future problems AND since two of their riggers both agreed that
I wouldn't need to replace the pads.
Also, when mounting the winch, Marblehead Trading Co. discovered
that the NEW winch was DEFECTIVE. 3 of the 5 cast mounting holes were
CRACKED. Deciding to examine my other existing winch -- 2 of the
mounting holes were cracked on it as well. So, I ended up returning
the new winch for a replacement AND ordering a second 10C. I will
be returning my old 10P winch to Barient as well - I expect to be told
that it was improperly mounted. Hmmmmm.... what about the new metal
ones with the same problem.....
Just got both winches mounted last week. Got to spend lots of time motoring
around Marblehead the last couple of weeks (Alan, you are NEVER on
your boat :>) ) and raising sails without winches -- building character
I think its called.
The new winches work GREAT !
During all of this, most everyone I've spoken with speaks very highly
of Barient, and defects seem to be VERY rare.........
Thanks again to all.
JC
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