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Windkiller 07-05-2011 06:36 PM

Boom Vang vs Boom furling?
Hi there
I have a Crown 18 , essentially a slightly smaller Cal 20 with a centerboard
It didn't come equipped with a boom vang
However it does have the interesting feature of being able to roll up the main on the boomit kind of ratchets around, the sheet attaches at the end

I did attach a boom vang but of course this makes the roller boom arrangement unworkable ( i didn't think it through but I can remove it)

my questions are
Has any one here used a rolling boom main furler and do they work well ?

Is a boom vang a more practical thing to have than a roller furling main?

i really like the idea of being able to reef easily

RJesser 07-05-2011 07:14 PM

com-pac 23
I have a similar system on my com-pac 23. The boom rolls to reef the main. I'm not real fond of it. I've been told that this was an 80's main reefing system on some of the smaller boats. It is easy enough to convert to a traditional reefing system if you modify or buy a new main. Or you may be able to find a used main with traditional reef points (I did). Then you can keep your boom vang.

CaptainForce 07-05-2011 07:25 PM

I have a roller reefing boom on my '73 ketch, but I never liked the resulting sail shape. I think your best choice would be to keep the vang and reef with a simple "jiffy" system by pulling down a slab. Take care and joy, Aythya crew

Windkiller 07-05-2011 09:04 PM

Hmm Cool
The only time I was in conditions that warranted reefing, it was at the end of the day and I was pooped(tired haha) so I just dropped all sail and Seagulled to my camping place so i've only tried it in the yard right setting the boat up for the first time, the boom seemed to hang down at the end quite a bit when it was rolled up ,The Vang seems to help and there was a very sturdy point at the base of the mast to hook it to, perhaps i'll look into getting some reef points sewn in or do it myself
Any other opinions would be appreciated too

nolatom 07-05-2011 09:33 PM

Agree roller reefing (common in 60s and '70s)----Bad, you never get any real outhaul and sail is too vertically creased, and too baggy for the breeze you reefed for.

Having a vang----------------------------------------Good

Having jiffy or "slab" reefing-------------------------Good. You'll need to see your sailmaker though, to put in the cringles and reinforce the cloth in way of them and along the "new" foot. And of course the boom hardware and cheek blocks to make the aft jiffy line work

ulferlingsson 07-21-2011 08:35 AM

Keep the vang, convert the main to traditional reefing (and install blocks at the end so you can reef it quickly from the mast, or, even more lazily, from the cockpit if you have pulled down all lines).

On my previous boat, a Havsfidra from 1974, the boom could be rolled with a winch handle, and the attachment for the vang was an enforced hole shaped as a keyhole under the boom. It was surely the best compromise possible, as you could use the vang but only when not reefed, and you could relatively easily reef even in hard wind. However, the sail shape gets lousy, so I bought a new sail with full length battens, and installed 2 reefs, with quick-reefing blocks on the boom. One thousand per cent better.

On my present boat you roll reef by pulling the boom out and twisting it in 90 degree increments. Idiotic. I tried it once and it took WAY too long to take in a reef, plus as usual the shape of the sail gets too baggy, so you end up getting too much healing and too little sailing. In other words, it doesn't contribute to increasing the feeling of having the boat under control in hard wind. I will install the same kind of reefing on this boat ASAP, and a vang, since it is rather important if you ever want to sail down wind... ;)

PS. I seem to recall back in the days that they tried to place some conical shaped filler so that the curve in the bottom of the main would be decreased when rolled up on the boom, but I guess it didn't solve the problem, because the system seems abandoned now. Or maybe it was the rolling mast that killed it. But really, traditional reefing as on modern racers is surely the best. Lines and blocks only.

tweitz 07-21-2011 04:06 PM

Roller reefing was an awful system, almost universally used in the '60's and until what we called jiffy reefing came along. It was possible to use a boom vang on a jiffy reefed sail, however. You used a device that was called a reefing claw, basically looking like a circle with an opening. A line was run from the point on the claw opposite the opening, and there were rollers of some kind on either side of the opening to minimize chafe on the sail. Look up reefing claw for an illustration.

luck66 07-26-2011 07:27 PM

Keep the vang, boom furling gives bad sail shape. my 1967 cascade has boom furling which i've never used. and yes i can reef when i want to.

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