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Nifty way to rig a preventer

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bbriner
Captain

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349 Posts

Initially Posted - 10/09/2005 : 12:46:03

I can't take credit for this, but I think it's pretty nifty so I thought I'd pass on. This is how Paul on "Sparky" did it, which I copied.

It's pretty simple. Put a spring clip on the mast end of the vang (assuming a non-rigid vang). When you want to go dead-downwind - or by-the-lee for wing-on-wing sailing - unclip the vang from the mast and move it forward to the stanchion base. Clip it on there and tighten the vang. Pretty easy.... just be sure to unclip it before gibing!!

Bill B
Wind Dancer
#4036 84 SR/FK
San Francisco Bay

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Derek Crawford
Master Marine Consultant

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USA
3321 Posts

Response Posted - 10/09/2005 : 13:45:45

"or by-the-lee for wing-on-wing sailing"
Bill - you don't need to sail by the lee for wing-on-wing sailing.
The optimum spot for the wind is off the weather corner of the transom. You will find that not only is it safer, but much faster!

Derek

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bbriner
Captain

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349 Posts

Response Posted - 10/09/2005 : 14:03:48

Derek
Certainly without a preventer I would never do it. I wouldn't even suggest it; it is terribly unsafe to crew and rig. However with a preventer the possibility of an accidental gibe is hugely reduced so it is possible and may be advantageous since by so doing you can keep the winged-out jib full much more easily. I don't know about the speed differences since I haven't bothered to measure the differences at the same time, but when I have done it I know was going faster than I was without it because I was catching up to others that normally I would not.

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allencl
Navigator

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USA
143 Posts

Response Posted - 10/10/2005 : 00:30:32

I would add that, for any conditions except light air, rigging a preventer from the vang attachment point on the boom can put a lot of load on your line and / or stanchion base- I broke mine doing it this way. Much less force is acting on a preventer rigged from the aft / outboard end of the boom to a bow cleat. This is the only way I will run mine now. Food for thought!

Cheers,

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Frank Hopper
Past Commodore

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Pitcairn Island
6776 Posts

Response Posted - 10/10/2005 : 07:50:34

I sail by the lee all the time. It is my usual way of sailing wing on wing. I have never used a preventer and never come close to an accidental gybe. I sail on a lake and we do not forget what we are doing while on a tack. I can imagine sailing longer tacks would create situations where vigilance could suffer. Our rigs are pretty small and I would be surprised if anyone could suffer much damage from a gybe unless it was really honk'n and if that is the case I don't recommend sailing by the lee!
(Derek, it doesn't surprise me that my way is slow, you kicked my but!)

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bbriner
Captain

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349 Posts

Response Posted - 10/10/2005 : 11:09:37

Chris
Yeah, I was actually wondering about that. Definitely food for thought. My thinking was that this set-up would be safe if one is **very careful** not to get too far 'on the lee' - that could cause a violent (accidental) gibe. That would put too much strain on everything - especially in very high wind. I'm thinking this setup is maybe ok for light air only. If the wind is too strong with large wind waves (yesterday on SF Bay it was that way) the little C25 gets tossed around a lot and the danger for an out of control round-up or broach becomes quite high (sometimes I have to use two arms on the tiller and I'm no weakling!). I think your approach to get the preventer out farther on the boom through a block on the bow is the right way to go. In those conditions though I usually stick to a deep broad reach. I have no idea what the polars look like on a C25 but there is more speed and less danger that way I think.

Thanks for the input..

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PZell
Admiral

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USA
548 Posts

Response Posted - 10/10/2005 : 15:11:15

Hi Bill, I was out there Friday to watch the Blue Angels and it was honking pretty good (100% jib & 1st reef main) about 30 mph winds and bumpy. What I will often do also for a preventer is pass a dock line over the end of the boom and cinch it up thru the eye and then lead the end through something convenient like the cabin top hand holds a bit forward and then back to the opposite side to tie it off on a cleat or winch. That works well in rolly conditions to keep the boom from flapping around.

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Stu Jackson C34
Admiral

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844 Posts

Response Posted - 10/10/2005 : 17:18:57

Don't Use the Stanchion!!!!

Use one of the shrouds, they're made for those loads. We do that on our C34, but have a rigid vang. So instead, we have a long cunningham line lead back to the cockpit. We detach the snap shackle from the cunningham line thru the cringle and put it on a mast tang (mainsheet connection) and then run the bottom snap shackle to the shroud base. Works great comin' down the estuary. The Fleet Week show yesterday was awesome. I've seen many, but this was the best. I sailed out the GG Bridge, then hove to at the south tower and gently slipped sideways all the way to Point Blunt. Great day.

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bbriner
Captain

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349 Posts

Response Posted - 10/14/2005 : 10:10:29

It seems that some replies to this thread were lost.. very strange.

Stu - Were you at the Catalina Rendevous on Angel Island? We were there only for one day (Saturday). If you were there, I'm sorry we didn't get a chance to meet.

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