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 Post subject: maast rotation
PostPosted: Sun Feb 10, 2008 5:42 pm 
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Site Rank - Deck Hand

Joined: Sun Feb 03, 2008 5:42 pm
Posts: 24
at the base of the mast there is a small pin that that slides through the mast and a metal clip to keep the mast from rotating.. Am i supposed to have the pin in while i am sailing or not?.because today i was sailing without it and it bent my (ring-ding) on the boom where it slides ton the mast track?


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 Post subject:
PostPosted: Sun Feb 10, 2008 6:04 pm 
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Joined: Wed Jul 18, 2007 7:33 pm
Posts: 299
Location: Lindale, Texas
The pin is for stepping the mast only. The pin should always be removed while sailing. Just do not forget to re-insert the pin when you begin lowering the mast. I almost did that one time and realized it before I lost the mast. I shudder to think what would have happened had I lowered the mast any more.


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 Post subject:
PostPosted: Sun Feb 10, 2008 6:18 pm 
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Joined: Sun Jan 08, 2006 1:20 pm
Posts: 418
Location: West Maui
ET Hobie guy wrote:
I shudder to think what would have happened had I lowered the mast any more.

Old mast - Big BOOOONNNNGGGGGGG!!

New mast - New CompTip to replace the shattered one.

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 Post subject:
PostPosted: Tue Feb 12, 2008 10:32 am 
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Joined: Mon Mar 19, 2007 7:55 pm
Posts: 34
Location: Coopersburg, PA
Personally, while sailing, I take the entire "ring ding" assembly off so it doesnt interfere with the mast base. And boy do I have a story to tell about forgetting to put the pin back in. Please bear in mind that this was about 2 years ago when I was first learning how to rig up my boat.

Well I brought the boat home all proud and dandy, and began to rig her up just to get a feel for her. The boat was on the trailer and still attached to the car (i was afraid it would tip) and I followed the instructions to raise the mast and get everything rigged up. After a bit of tinkering, I thought I would try my hand at lowering the mast by myself because I singlehand pretty often. Well, either its not in the instruction manual, or I completely missed it, but I forgot to put that pin in the hole. So I released the forestay, and slowly began to lower the mast, completely oblivious that the little pin was still dangling there. Everything was going well for my first time I thought, until all of a sudden the mast base slipped out of the step and fell with a crash to the ground. I was very very very lucky however, and when i told my other buddies they didnt believe me, but it just so happened that this day was garbage collection day, and it just so happens that my garbage is located directly behind my boat, and it also just so happens that I have a LOT of garbage. Well down came the mast, and up went the garbage, everywhere. Now this scared the poop out of me so I inspected the mast to the best of my ability at the time and called up a friend to get another opinion. Well after he died of laughter upon arrival, he told me that I got lucky and didnt have any damage besides a scratch here and there, and boy was i relieved.

So, moral of the story: PUT YOUR PIN IN....or keep your garbage behind your boat, but i would trust the former much more

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~vinny


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 Post subject:
PostPosted: Tue Feb 12, 2008 10:32 pm 
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Joined: Thu Jul 27, 2006 5:26 pm
Posts: 598
Location: Norman, OK
I hate to admit it but I have dropped a mast or two, my unmentionable boat didn't have a captive mast base, and sure enough it was hard to raise and lower alone, but I did manage to do it. But I dropped it twice, both times onto grass but still it scared it.

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Nacra 5.2 "Elsies"
Hobie 14T, "Blazin" I guess I am keeping her!


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 Post subject:
PostPosted: Sat Feb 16, 2008 10:39 am 
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Joined: Wed Apr 25, 2007 9:28 am
Posts: 54
Location: Switzerland, Europe
How can I stop the mast from turning?

For example if i'm out on the lake, and theres no wind, the waves start turning the mast, really doesn't sounds nice, when the mast hits the stoppers.

Nice Weekend
Chriss

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1994 HC16


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 Post subject: Why Mast Rotation?
PostPosted: Tue Feb 26, 2008 8:23 am 
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Site Rank - Deck Hand

Joined: Wed Dec 19, 2007 8:24 pm
Posts: 14
Location: Portsmouth, NH
Most sailboats have fixed masts. I am curious why the masts on Hobie cats are designed to rotate. Is this for racing purposes? Do catamarans from other manufacturers have this capability?

Thanks for the insight!

Bill

1981 H16


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 Post subject:
PostPosted: Tue Feb 26, 2008 8:43 am 
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Joined: Fri Jul 07, 2006 9:40 am
Posts: 952
Location: Dallas, TX
Most real cats have rotating masts. Even some monohulls have them.

A rotating mast gives improved laminar flow over the leading edge of the sail. Especially important at higher speeds. Turbulence at the leading edge is BAD.

Brian C


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 Post subject:
PostPosted: Tue Feb 26, 2008 9:22 am 
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Joined: Mon May 09, 2005 10:25 am
Posts: 4268
Location: Jersey Shore
>>How can I stop the mast from turning?

>>For example if i'm out on the lake, and theres no wind, the waves start turning the mast, really doesn't sounds nice, when the mast hits the stoppers.


Your best bet is probably to either install a boom vang to hold the boom over and keep the mast rotated, or simply tighten the mainsheet a little. If your boom has two mainsheet hangers, mount the main blocks on the back hanger- when you tighten the mainsheet, the boom will push forward and keep the mast rotated one way. Or, if all else fails, have someone sit on the boom.

I suppose you could stick the mast step pin in, but you would want to be sure you removed it before actually sailing otherwise you would risk breaking the hinge when the mainsheet is tightened.

sm


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 Post subject:
PostPosted: Wed Mar 12, 2008 7:48 pm 
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Joined: Sat Sep 16, 2006 7:57 am
Posts: 68
Location: Virginia
Atthe 81 nationals in REALLY light wind, people were using the vang as a mast rotator, wrapping it around the windward side of the mast, and hooking it to the downhaul cleat, then tensioning it. IN a broiad reach or downwind, it kept the mast from banging around.

In a sloppy sea/ light wind, it kept the mast on a 16 from rotating, and it substantially quieted the rig , making it alot faster. I'm talking 2-3 knot windspeed.

Hope that helps.

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Raced extensively as a kid (against Matt Bounds!!), just bought a 20 year old 16 and am refurbishing it.

Sail # 21888


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