Join Date: Feb 2002
Location: Jackson WY
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Re: Older CCA boats with rounded robust overbuilt booms...added boom vang needed?
I am not sure because when I owned a boat there was no vang and when I am on others I am not looking at the attachments just yanking on it when told to do so. But I believe the vang can be as described a simple block set of blocks giving some advantage with a cam cleat to lock it into place or release. What I described so far is simple block and tackle vang. A solid vang is a nice upgrade in terms of it acting to keep the boom perpendicular to the mast, acting just like a topping lift when dropping the sail or reefing leaving eliminating the need for a topping lift, which is nice.
The description of a strap on the boom is fairly accurate. It is usually an aluminum strap or ubolt under the bottom of the boom 1/3 to half way back from the goose neck. The front part of the vang should be a U-bolt or similar near the base of the mast. The angle from the base of the mast to boom will stay the same, while the angle and distance from anywhere else like the coach roof will change as the sail is let out. Putting this line to the toe rail would have it act more like a preventer, which you can use just a simple line for no need for mechanical advantage.
Lazy jacks are much simpler to describe, they a series of small lines led from maybe 2/3 up the mast to 2/3 back on the boom. If you are single or short handed, it helps to capture the sail as its dropped and keep the sail on the boom instead of the side decks or the water. You can then gather and fold the sail later. Some lazy jacks have a way to loosen them and secure them near the mast to prevent them from affecting sail shape when not needed.
West Wight Potter 14 "Lemon Drop"
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Last edited by jephotog; 07-02-2013 at 02:26 AM.
Reason: solid vang info