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Author Topic: Rigging a Preventer  (Read 186 times)

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britinusa

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Rigging a Preventer
« on: September 06, 2019, 10:51:43 AM »

Moving along with my Barber Hauler for the Jib.

Now working on a Preventer, wondering which setup you guys have?

I have all the parts needed, just need to determine the best location for the upper and lower attachments.

Current idea is:
... Line from Aft Boom Bale
... Down to a block by the toe rail abaft the shrouds (1/4" U-Bolt with Backing plate)
... Aft to a cam cleat (already in position) on the outside of the combing.

I would setup a preventer on each side to eliminate need to go forward to attach/remove/swap sides.

Anyone have a pic of their setup?

Paul

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Stu Jackson

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Re: Rigging a Preventer
« Reply #1 on: September 06, 2019, 11:07:11 AM »

A preventer should always be led to the aft end of the boom and then to the bow.  Otherwise, one risks breaking the boom.  This comes from many discussions on cruisers forum from long distance sailors. 
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Stu Jackson, C34 IA Secretary, #224 1986, "Aquavite"  Cowichan Bay, BC  Maple Bay Marina  SR/FK, M25, Rocna 10 (22#) (NZ model)

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Ron Hill

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Re: Rigging a Preventer
« Reply #2 on: September 06, 2019, 06:34:21 PM »

Paul : I can't argue with Stu or the "long range cruisers:", but I took my 4:1 and attached it from the aft bale on the boom to the aft lower shroud turnbuckle.  If you keep that vang cinched up, the boom is solidly in place.  have done it for over 20 years!!

A thought
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Noah

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Re: Rigging a Preventer
« Reply #3 on: September 06, 2019, 06:53:47 PM »

Might consider adding one of these shock absorbers into your preventer system. If you have a loose footed main you could probably wrap it twice around your boom then attach carabiners to a line or block/tackle leading to a strong point forward/athwartship.
https://www.davisinstruments.com/product/shockles/
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Geoffreykwright

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Re: Rigging a Preventer
« Reply #4 on: September 09, 2019, 12:09:32 PM »

I found a like to the Catalina 320 Association website which talks about rigging the preventer from where the block for the mainsheet attaches to the boom (and then forward to the bow).  Seems like a sturdy attachment point.  Would this work, or should it be attached to the aft end of the boom?
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