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Catalina/Capri 25/250 Sailor's Forums

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how to rig a preventor

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JimB517
Past Commodore

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USA
3285 Posts

Initially Posted - 06/30/2003 : 13:00:10

see reply to Arlyn's comment, below

Edited by - jimb517 on 06/30/2003 13:07:20

Edited by - jimb517 on 06/30/2003 16:14:25

Edited by - on

Arlyn Stewart
Master Marine Consultant

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USA
2980 Posts

Response Posted - 06/30/2003 : 13:29:53

Jim, I'm slightly familiar with Dana Point and Newport Beach... very nice area for sailing.

Ok...to your whisker pole questions. I'm not sure of the suitability of a spinnaker pole for whisker pole use... so will leave that to someone else.

A whisker pole doesn't require a topping lift. The outboard end is made to either the clew, the bowline loop of the sheet or the sheet itself sliding along the sheet up to the clew. The inboard end of course made to the mast eye you described forward on your mast. The pole should rig aproximately level. When used, the sheet is snugged firm so that boat motion isn't hammering things around. If the clew is not positioned correctly... then ease the sheet and adjust the length of the pole and retighten the sheet.

Running wing and wing without a whisker pole would be difficult without use of a preventer. While everyone on the board knows I love bungee... I hadn't thought of using it on a preventer and likely wouldn't...

Arlyn C-250 W/B #224
<img src="http://www.stewartfam.net/arlyn/rr.jpg" border=0>
N/E Texas and Great Lakes

[url="http://www.cox-internet.com/arlynstewart/"]Arlyn's C250 Mods n Cruisin Stories[/url]

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JimB517
Past Commodore

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USA
3285 Posts

Response Posted - 06/30/2003 : 15:52:44

I'm going to replace the bungee preventer which ran from the middle of the boom to the lifelines. The PO used it and showed it to me during our sea trial. In yesterday's fresh breeze it stopped the gybe, but stretched out alarmingly.

How do you rig your preventer and what does it attach to? I have a slide with an eye running on the genoa track forward of the genoa sheet block.

<img src="http://www.indiscipline.org/cat25/pictures/icon.jpg" border=0>Indiscipline 1978 FK #398

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Arlyn Stewart
Master Marine Consultant

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USA
2980 Posts

Response Posted - 06/30/2003 : 16:40:39

Several ways to do it. A couple are; use a snap shackle on the boom vang... uncleating from the mast, make the vang to to the rail or a stanchion base. Use line on the end of the boom to block on the rail and then bring the line back to a cleat.

I use the vang method.

Whichever used... it should be quickly releasable

It should not be used in a strong wind... it could lead to a knock down or something breaking and an unexpected runaway boom.

Arlyn C-250 W/B #224
<img src="http://www.stewartfam.net/arlyn/rr.jpg" border=0>
N/E Texas and Great Lakes

[url="http://www.cox-internet.com/arlynstewart/"]Arlyn's C250 Mods n Cruisin Stories[/url]

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Champipple
Master Marine Consultant

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USA
6855 Posts

Response Posted - 06/30/2003 : 17:02:05

We use the snap shackle on the boom vang method. We take it off the mast and clip it to the stanchion base.

In heavy wind we do one of two things - When not racing, everyone on board stay in the cockpit seated below the height of the boom and we try not to sail by the lee ever. I highly suggest this method if you are out in heavy winds on a pleasure sail. (and don't have a easily releaseable vang.)

Unfortunately, if you are racing keeping your head below the boom is not always possibly. It is at this time we have some one "sit" (lean against) on the boom and hold it out. I really want to clarify exactly what this person, usually the foredeck crew, is doing while holding out the boom.

While racing, the spinaker trimmer is usually standing in a position that could (would) put him in jeopardy if we accidentally gybe. The person holding the boom is not there to make sure we don't gybe, that would require Herculean strength. Their job is to keep the boom from swinging from the wave action, and in the event of a full and accidental gybe, to give the crew a couple of seconds warning. After the warning they "curl around" the front of the mast inside the shrouds. It is really important that whomever does this task understands their function. We had a guy 4 years ago that thought his only goal in life was to hold the boom and protect the crew at all costs. Another boat picked him out of the water, broken leg and all, wind shift shot him a good 20 to 30 feet from our boat. (another story for another post)

DW

D. Wolff - "The Flying Wasp" #401 sr/sk
Chief Measurer C-25/250 National Assn.
<img src="http://www.flags.com/dreamimages/Flags/measurer.jpg" border=0>

Edited by - Duane Wolff on 06/30/2003 17:03:05

Edited by - on

JimB517
Past Commodore

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USA
3285 Posts

Response Posted - 06/30/2003 : 18:53:07

what does it mean "sail by the lee" ?

By the way, my vang has a snap shackle and could be released from the base of the mast and relocated to a stanchion base easily. The line is led aft through a line organizer and through a cam cleat. It's not long enough, but that can be taken care of.

<img src="http://www.indiscipline.org/cat25/pictures/icon.jpg" border=0>Indiscipline 1978 FK #398

Edited by - jimb517 on 06/30/2003 18:57:44

Edited by - on

Derek Crawford
Master Marine Consultant

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USA
3324 Posts

Response Posted - 06/30/2003 : 21:11:17

Jim - to "sail by the lee" means to sail when you have the wind blowing over the side of the boat on which the mainsail is set. It's very condusive to an accidental jibe...<img src=icon_smile_dissapprove.gif border=0 align=middle> as the wind can easily shift to the back of the mainsail.
Derek

<img src="http://im1.shutterfly.com/procserv/47b3dc30b3127cce942c608d6f1e0000001010" border=0>
TRFK#2262"This Side Up"

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