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 furler line size - help pls		  New Topic  Topic Locked
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hinmo
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Initially Posted - 01/13/2009 :  11:46:13  Show Profile
During my brief ownership, I noticed the rolling furler line size was wrong. I have the stock CDI roller furler on my 1983 Cat25. Does anyone know the length and diameter of the line used on these.

(the replacement that is on there is oversized and jams easily)

thanks
"Kukla" '83 FK,SR
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Dave Bristle
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Djibouti
10005 Posts
Response Posted - 01/13/2009 :  13:06:40  Show Profile
That depends on the sail size. Maybe your P.O. replaced the headsail with a bigger one. If your line is 1/4" (too big for most furlers our size), step down to 3/16 or 5/32. Or you could remove the core from the forward third of the line... (De-coring is tricky but doable--check any book or article on splicing, since removing some core is part of the process.)
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hinmo
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Response Posted - 01/13/2009 :  17:54:28  Show Profile
De-coring?
I was going to strip the old entirely and add new line.
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delliottg
Former Mainsheet C250 Tech Editor

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Response Posted - 01/13/2009 :  18:44:18  Show Profile  Visit delliottg's Homepage
You could also go with some Spectra in very thin diameter. Expensive, but not horribly so. De-coring the line isn't that difficult.
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Dave Bristle
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Djibouti
10005 Posts
Response Posted - 01/13/2009 :  20:58:17  Show Profile
High-tech rope isn't required here--this is not a stretch-inducing application. Sa-set is plenty good, and de-coring the forward end of a furler line is not terribly uncommon. (With no core, the line has much lower stretch resistance, but it doesn't really matter.)
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hinmo
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Response Posted - 01/14/2009 :  02:37:45  Show Profile
whats de-coring mean?
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britinusa
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Response Posted - 01/14/2009 :  06:38:22  Show Profile  Visit britinusa's Homepage
The process of de-coring a line is easy, only do this if you are sure the strength of the de-cored line is sufficient for your needs.

Cut the end of the line if there is any whipping in place to free the inner core of the line.

From the end of the line, slide the outer braid covering away from the end, this will cause a hump in the outer covering.

Roll that hump away from the end of the line as far as the amount you wish to de-core.

Now open the braid at the hump by separating it's threads so that you can pull out the inner core.

Now the the inner core is protruding from the outer braiding, you can cut the inner core and withdraw it from the end of the line.

The hump will easily roll forwards and resume it's original shape but slightly thinner.

Paul
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mlg3733
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Response Posted - 01/14/2009 :  09:06:45  Show Profile
CDI Manual recommends 3/16 or 5/32.
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Dave Bristle
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Djibouti
10005 Posts
Response Posted - 01/14/2009 :  09:22:46  Show Profile
De-coring: (This may be essentially what Paul described...)

Bend the rope sharply at the point where you want to cut the core to remove it. Then carefully part the outer cover and pry the core through the opening you've created--just far enough to be able to cut the core, which can then be pulled out from the end of the line.

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(This is more of a loop than you need.)

The partially de-cored line will then flatten as it wraps around the furler drum, allowing a larger diameter line (with core) for handling in the cockpit.

But a simpler solution would be to buy a smaller diameter standard double-braid rope such as Sta-Set. Also make sure you maintain light tension on the furler line as you unfurl the sail, so it wraps snugly and evenly on the drum. (A glove is recommended for this purpose.) Also check that the line is feeding perpendicularly to the drum so it doesn't tend to bunch toward the top or bottom as it winds on.
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Jefffriday
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Response Posted - 01/14/2009 :  12:11:05  Show Profile
I use a 1/4 inch line on my Sea-flex, works just fine.
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Sloop Smitten
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1181 Posts
Response Posted - 01/14/2009 :  12:39:03  Show Profile
Well I use the line supplied by CDI and, though manageable, I would liken furling the sail to starting a lawn mower with no handle attached to the starter rope. I think I will upgrade to a 5/16" or 3/8" and try the decoring mentioned. Thanks for pointing it out.
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Dave Bristle
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Djibouti
10005 Posts
Response Posted - 01/14/2009 :  20:56:01  Show Profile
Joe, let us know how it works for you... This is not something I've done--just an approach I've heard about.
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hinmo
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248 Posts
Response Posted - 02/19/2009 :  02:51:13  Show Profile
Folks - going with 1/4 inch diameter. Does anyone have a length?
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Dave Bristle
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Djibouti
10005 Posts
Response Posted - 02/19/2009 :  10:08:52  Show Profile
Depends on the sail. (More turns needs more line.) I'd guess the foot-length of the sail plus the distance from the drum to the cockpit plus a few feet for handling. I always go long and have some to cut off and use for miscellaneous stuff--much better than coming up short.
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mlg3733
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118 Posts
Response Posted - 02/19/2009 :  10:13:13  Show Profile
I use a Seaflex furler and have 35 ft of line.
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dlucier
Master Marine Consultant

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Virgin Islands (United Kingdom)
7583 Posts
Response Posted - 02/19/2009 :  10:18:46  Show Profile
If the old furler line is of the correct length, simply remove and measure it.
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