Here is a link to the diagram.  4 screws, not 3.

http://l-36.com/winches_pages.php?winch=bar28_stw.htm

I have 7/16 Sta-Set.  3 wraps and the tailer does not slip.  The drums are
smooth aluminum.

Joel

On Mon, Oct 5, 2015 at 12:24 PM, Charles Nelson via CnC-List <
cnc-list@cnc-list.com> wrote:

> If your winches have seen a lot of use, I suggest you have them knurled.
>
> Mine (Lewmar STs #30 and #50) had ~ 15 years of use and I had them
> re-knurled with a simple vertical 'scoring' pattern of 'medium' harshness
> for $30 each. Too much 'harshness' will chew up your line.
>
> They now hold as if new although in a breeze we always use more wraps.
>
> Charlie Nelson
> Water Phantom
> C&C 36XL/kcb
>
> Sent from my iPad
>
> On Oct 5, 2015, at 11:20 AM, Josh Muckley via CnC-List <
> cnc-list@cnc-list.com> wrote:
>
> Knurling is the process by which texture is given to metal.  Usually metal
> handles of wrenches and hammers or other tools will be knurled with a
> cross-hatched pattern.  There are lots of options and harshnesses which can
> be chosen by the machinist.
>
> I'm not particularly familiar with the best line for friction but I would
> start with something cheap like stay-set.  With a little work you can
> probably bury the end nearest the clew.  I probably wouldn't sleeve the
> whole line since it seems you'd loose some or all of the advantage of the
> new high-tech line.  Since the sleeve and original jib sheet will have
> different elasticities I would consider allowing the sheet to "float" at
> the tailing end...just a thought.
>
> The machine shop I use is in Lusby, MD and right around the corner from my
> house.  The guy is extremely knowledgeable and runs a great business out of
> his garage.  He calls the place "Machine Shop".  His name is Harry Langly
> an goes by HL.  Email him at marsurl...@comcast.net or call at (410)
> 326-2001.  Email might be better since he had an accident years ago that
> affects his voice.
>
> Josh
> On Oct 5, 2015 10:30 AM, "David Knecht via CnC-List" <
> cnc-list@cnc-list.com> wrote:
>
>> Hi Josh- great info!
>> On Oct 5, 2015, at 10:08 AM, Josh Muckley via CnC-List <
>> cnc-list@cnc-list.com> wrote:
>>
>> David,
>>
>> The screws which Joel mentioned are, from my experience, a type of cap
>> screw.  You might want to remove them one at a time and lube them with
>> tef-gel, or anti-seeze.  If they get stuck they break.  If they are over
>> torqued they break.  If they are not fully tightened or the springs are old
>> or the line is too small of a diameter then line won't stay in.
>>
>> As long a the above three conditions are met then the problem you are
>> having is with the friction on the drum.  It sounds like those three
>> conditions are met since you only experienced this problem in heavy winds.
>> As mentioned extra wraps should help add friction.  Additionally a machine
>> shop can re-knurl the drum.  You can also add a sleeve to the jib sheet.
>> If you have the crew to do so, try having them not use the self-tailer to
>> winch in on the tacks.  See how much pressure the tailer needs to apply
>> before the winch slips.  The tailer should only have to apply moderate
>> tension.  If they are really pulling you need another wrap (or 2).  If you
>> have 4 or 5 wraps and the winch still slips then you need more friction.
>> Sleeving the sheet is probably a little cheaper and will make the line
>> better on the hand.  You can also do it yourself.  If you still find that
>> it takes 4 or more wraps I would start looking for a machine shop.  I have
>> one in mind if you are interested.
>>
>> We had 4 wraps on the drum so I am thinking friction on the drum.  I
>> don’t know what re-knurling means and don’t know if any shop would know how
>> to do this. Also, I have not found a good machine shop in my area.  What
>> shop did you have in mind?  What would you sleeve the sheet with?  Dave
>>
>> Josh Muckley
>> S/V Sea Hawk
>> 1989 C&C 37+
>> Solomons, MD
>> _______________________________________________
>>
>>
>> Aries
>> 1990 C&C 34+
>> New London, CT
>>
>> <pastedGraphic.tiff>
>>
>>
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-- 
Joel
301 541 8551
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