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Off-boom sheeting

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    Posted: 12 Feb 20 at 8:42am
I've just acquired an elderly 420. The current sheeting arrangement has a single-and-becket block on the traveller (at aft end of c/b case) and two blocks dangling on strops from the boom. That means that the fall of the sheet comes off the boom rather than the more usual lead from the hull. I queried that with the vendor and he said he sailed it that way. It would take quite a bit of surgery to fit a swivel block and jammer so I'm debating whether to stick with what I've got.

The obvious snag is that I could end up losing my grip on the sheet on a reach and having it dangling out of reach. so - anyone used to sailing with an off-boom sheet and how is it best to handle it?
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Sam.Spoons View Drop Down
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Post Options Post Options   Quote Sam.Spoons Quote  Post ReplyReply Direct Link To This Post Posted: 12 Feb 20 at 10:12am
Most Blaze sailors use off the boom, as do many skiffs but with two blocks on the boom how does that work. The Blaze has only a single block halfway along the boom and the remaining tackle at the aft end (one block with becket on boom and another block on the rope traveller) the mainsheet goes from boom to traveller to boom, then along the boom to the ratchet on a mid boom strop and to the helm. The advantage in the Blaze is that you have nothing going from the boom to the cockpit floor in-between the mast/kicker and transom. The skiff guys do it to allow the crew to play the mainsheet upwind (mozzy would explain better). If you have two mid boom blocks that implies that the sheet goes to the cockpit floor and back up again which doesn't make much sense?
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Sussex Lad View Drop Down
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Post Options Post Options   Quote Sussex Lad Quote  Post ReplyReply Direct Link To This Post Posted: 12 Feb 20 at 11:22am
Used off the boom in an old Ent, I couldn't stand aft sheeting and the centerboard case wasn't strong enough for a block.......It worked well. Tie the end of the sheet onto something in the cockpit. The hand drill with minor adjustments is pretty much the same as standard center main.

Edited by Sussex Lad - 12 Feb 20 at 11:28am
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Post Options Post Options   Quote GarethT Quote  Post ReplyReply Direct Link To This Post Posted: 12 Feb 20 at 5:20pm
I'm guessing you can't cleat the main off the boom. Will that be a problem hoisting the kite?
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Post Options Post Options   Quote tink Quote  Post ReplyReply Direct Link To This Post Posted: 12 Feb 20 at 6:16pm
Originally posted by snowleopard

I've just acquired an elderly 420. The current sheeting arrangement has a single-and-becket block on the traveller (at aft end of c/b case) and two blocks dangling on strops from the boom. That means that the fall of the sheet comes off the boom rather than the more usual lead from the hull. I queried that with the vendor and he said he sailed it that way. It would take quite a bit of surgery to fit a swivel block and jammer so I'm debating whether to stick with what I've got.

The obvious snag is that I could end up losing my grip on the sheet on a reach and having it dangling out of reach. so - anyone used to sailing with an off-boom sheet and how is it best to handle it?
You can have a stopper knot and a long mainsheet with the bitter end tied somewhere around the thwart

Tried it in my streaker, loved it be easy to over sheet on a una sail boat, sloop will be better

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Post Options Post Options   Quote Neptune Quote  Post ReplyReply Direct Link To This Post Posted: 12 Feb 20 at 10:21pm
I wouldn’t sail my 300 any other way!
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Sussex Lad View Drop Down
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Post Options Post Options   Quote Sussex Lad Quote  Post ReplyReply Direct Link To This Post Posted: 13 Feb 20 at 9:13am
Originally posted by GarethT

I'm guessing you can't cleat the main off the boom. Will that be a problem hoisting the kite?



Who pulls the kite up on a 420? Suppose it depends how it's rigged.


One thing I forgot to mention earlier is that a ratchet block on the boom is generally bigger than the usual one. It hurts more if it smacks you on the head. Ouch
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Sam.Spoons View Drop Down
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Post Options Post Options   Quote Sam.Spoons Quote  Post ReplyReply Direct Link To This Post Posted: 13 Feb 20 at 9:53am
Photos would help to puzzle out why it's been rigged that way. Rereading the OP it sounds like it's a centre mainsheet and I've never seen one rigged off the boom?
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Sussex Lad View Drop Down
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Post Options Post Options   Quote Sussex Lad Quote  Post ReplyReply Direct Link To This Post Posted: 13 Feb 20 at 10:03am
Just Looked at the class rules and looks like sheeting off the boom is not allowed but if Snowleopard is not doing class events..................
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Post Options Post Options   Quote GarethT Quote  Post ReplyReply Direct Link To This Post Posted: 13 Feb 20 at 12:18pm
Originally posted by Sussex Lad


Originally posted by GarethT

I'm guessing you can't cleat the main off the boom. Will that be a problem hoisting the kite?

Who pulls the kite up on a 420? Suppose it depends how it's rigged.One thing I forgot to mention earlier is that a ratchet block on the boom is generally bigger than the usual one. It hurts more if it smacks you on the head. Ouch


Crew will be messing about with the pole, so helm hoists
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