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Weight of capsized rig #80207
07/14/06 05:50 PM
07/14/06 05:50 PM
Joined: Jun 2005
Posts: 55
Wilmette, IL
Jamie Offline OP
journeyman
Jamie  Offline OP
journeyman

Joined: Jun 2005
Posts: 55
Wilmette, IL
Capsized last weekend solo and had a chance to see if I could right it solo. No go. I was in the mist of trying the garbage bag over the shoulder, but didn't have enough water in it. By then, I had one motorboat, a H16 and the beachstaff jetski offering help, so with a lift of the mast, my experimenting with the bag was over.

After the fact, I'm thinking I probably needed at least 5 gallons of water to make it work.

I'm trying to do the math, but I'm not sure of the weight and moment of a capsized Blade. My guess is 20 Kg at 14 feet. To offset that, I have 138 Lbs at 3 feet. It just seems like I need quite a bit of water at 5 feet to make it work. Anybody know what weight and moment I should be using for the rig?

I'd prefer not to have to install a righting pole, but I definitely need to do something, because on weekdays, no one may see me and it's a long way across the lake.

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Re: Weight of capsized rig [Re: Jamie] #80208
07/15/06 02:33 AM
07/15/06 02:33 AM
Joined: Jun 2001
Posts: 9,582
North-West Europe
Wouter Offline
Carpal Tunnel
Wouter  Offline
Carpal Tunnel

Joined: Jun 2001
Posts: 9,582
North-West Europe

138 lbs body weight (63 kg) ?

You are a light fellow.

I'm more heavy myself but I think 70-75 kg persons can right the F16's with alu masts.

In your case about 5 gallons of water (19 kg) should do it for sure, total 82 kg. I'm guessing that about 3-4 will be sufficient though.

Probably best you can do is get a pully setup and a specilized bag that is easy to fill to the required amount. I refer to other for this as I never needed it. I'm about 85 kg.

Wouter


Wouter Hijink
Formula 16 NED 243 (one-off; homebuild)
The Netherlands
Re: Weight of capsized rig [Re: Wouter] #80209
07/15/06 06:35 AM
07/15/06 06:35 AM
Joined: Mar 2006
Posts: 1,246
Orlando, FL
tback Offline
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tback  Offline
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Joined: Mar 2006
Posts: 1,246
Orlando, FL
I find a canvas bag works best (or a pillow case -- yes it'll leak, but not so quick that you can't use the water within). The plastic garbage bags don't work as well because they'll burst as you pull them over your shoulder with any substantial amount of water.


USA 777
Re: Weight of capsized rig [Re: tback] #80210
07/15/06 08:43 AM
07/15/06 08:43 AM
Joined: Jul 2004
Posts: 2,718
St Petersburg FL
Robi Offline
Carpal Tunnel
Robi  Offline
Carpal Tunnel

Joined: Jul 2004
Posts: 2,718
St Petersburg FL
Quote
The plastic garbage bags don't work as well because they'll burst as you pull them over your shoulder with any substantial amount of water.
Thats right, been there done that. Good thing my body weight can bring it up, but I do need some wind to do so. Jaime, you remember when I capsized at the seminar? Barely enough wind to help me bring the boat up.

Try one of those righting bag rigs or like Terry said a Pillow case.

Re: Weight of capsized rig [Re: Robi] #80211
07/20/06 02:23 PM
07/20/06 02:23 PM
Joined: Dec 2005
Posts: 443
Edmonton, Alberta, Canada
bobcat Offline
addict
bobcat  Offline
addict

Joined: Dec 2005
Posts: 443
Edmonton, Alberta, Canada
Had the opportunity to right my boat a couple days ago. I figured out what I did wrong trying to right the 4.9 this past winter. When I threw the righting line over the hull, I didn't go behind the sidestay. This gave enough pull forward that I couldn't stand on the board for more than 5 seconds.

I repositioned the righting line and after 7.5 seconds of hiking the Blade came back on her feet.

The sad part is I didn't notice it was also on the trailing edge of the upper board. Need to tune that board now <img src="http://www.catsailor.com/forums/images/graemlins/frown.gif" alt="" />

Re: Weight of capsized rig [Re: bobcat] #80212
07/20/06 03:34 PM
07/20/06 03:34 PM
Joined: Jul 2004
Posts: 2,718
St Petersburg FL
Robi Offline
Carpal Tunnel
Robi  Offline
Carpal Tunnel

Joined: Jul 2004
Posts: 2,718
St Petersburg FL
Where did you reposition the righting line?

Re: Weight of capsized rig [Re: Robi] #80213
07/20/06 04:40 PM
07/20/06 04:40 PM
Joined: Dec 2005
Posts: 443
Edmonton, Alberta, Canada
bobcat Offline
addict
bobcat  Offline
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Joined: Dec 2005
Posts: 443
Edmonton, Alberta, Canada
It was all in the throwing over the hull. It is still tied to the mast base. I just now make sure that I throw it aft of the sidestays. Previously, it would have been thrown over at the front beam. I was wondering why I couldn't stay on Rick's boards for long.

My last boat had the righting line strung under the tramp.

Re: Weight of capsized rig [Re: bobcat] #80214
07/21/06 03:23 PM
07/21/06 03:23 PM
Joined: Jun 2005
Posts: 55
Wilmette, IL
Jamie Offline OP
journeyman
Jamie  Offline OP
journeyman

Joined: Jun 2005
Posts: 55
Wilmette, IL
Neglecting that you are bigger than I, what is more important: A. leaning off the hull at a angle that is almost parallel to the water or B. leaning off the daggerboard, but not being as good of an angle as you can get off the hull?

Re: Weight of capsized rig [Re: Jamie] #80215
07/23/06 10:30 PM
07/23/06 10:30 PM
Joined: Dec 2005
Posts: 443
Edmonton, Alberta, Canada
bobcat Offline
addict
bobcat  Offline
addict

Joined: Dec 2005
Posts: 443
Edmonton, Alberta, Canada
I couldn't get the mast past horizontal when standing only on the hull, no matter how low I was hiked out.
Standing on the boards provided a lot more gratification. I think a lot of that is just the fact that you are standing on a lever that is trying to rotate the upper hull to vertical (bringing the mast with it. The lower hull defines the axis of rotation. Standing on the hull has no rotational effects.

Re: Weight of capsized rig [Re: bobcat] #80216
07/23/06 11:15 PM
07/23/06 11:15 PM
Joined: Jun 2001
Posts: 1,449
P
phill Offline

veteran
phill  Offline

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P

Joined: Jun 2001
Posts: 1,449
Folks,
I would advise against standing on the cenreboard.
Regards,
Phill


I know that the voices in my head aint real,
but they have some pretty good ideas.
There is no such thing as a quick fix and I've never had free lunch!

Re: Weight of capsized rig [Re: Jamie] #80217
07/24/06 03:54 PM
07/24/06 03:54 PM
Joined: Sep 2005
Posts: 893
W
waynemarlow Offline
old hand
waynemarlow  Offline
old hand
W

Joined: Sep 2005
Posts: 893
From my limited experiance at a mere 90 kilos its not the weight of the mast /sail that is the problem, but the stiction of the sail to the water. Dead smooth water, almost no wind, my Stealth is a bitch to right, about 5 knots of wind and the smallest of a ripple and its a doddle. Any clues on how to break this stiction as the mast comes up to about 300mm from the water and then the sail just seems glued to the water.

Different idea here, in landrover pull me out of the mud situations we all use a great big bunchy line ie little baby 4 wheel drive sets off as fast as he can with very short bungy line getting tighter, the bungy finally says enough is enough and then stops the baby 4 x 4 but at this point the pulling power is about 4 times that of the baby 4 x 4 on its own. Now we could use the same philosphy here. Tie a bungy off and then lean back gaining momentum until you stop just short of the water, I bet the pulling power is probably twice that of just leaning on a rope. Has anybody tried it <img src="http://www.catsailor.com/forums/images/graemlins/cool.gif" alt="" />

Re: Weight of capsized rig [Re: waynemarlow] #80218
07/24/06 04:02 PM
07/24/06 04:02 PM
Joined: Feb 2005
Posts: 1,382
Essex, UK
Jalani Offline
veteran
Jalani  Offline
veteran

Joined: Feb 2005
Posts: 1,382
Essex, UK
The early windsurfer rig 'pull up' lines were stretchy polyester and I found them comfortable and easy to use. Although I do recall that once the sail overcame the 'stiction' it came out of the water pretty quick. By contrast, when on holiday last year in Greece, the uphauls on the boards available were all prestretch. I know I'm getting older, but I had a hell of a time trying to pull up a 6.0m sail!!

Your post, Wayne, has just given me a 'eureka' moment - now I think I know why it was so difficult compared to what I remember <img src="http://www.catsailor.com/forums/images/graemlins/grin.gif" alt="" />


John Alani
___________
Stealth F16s GBR527 and GBR538
Re: Weight of capsized rig [Re: Jalani] #80219
07/24/06 05:57 PM
07/24/06 05:57 PM
Joined: May 2003
Posts: 4,451
West coast of Norway
Rolf_Nilsen Offline

Carpal Tunnel
Rolf_Nilsen  Offline

Carpal Tunnel

Joined: May 2003
Posts: 4,451
West coast of Norway
John,

when windsurfing I assume you let the sail 'slide' forwards a bit just as you startet applying tension to the uphaul? I find it much easier to get the sail ut again with that little slide in the beginning, if it is not windy enough to waterstart.


When righting the T, we let loose downhaul, mainsheet and traveller. This makes it very much easier to get the process started as the main sheds water easier/faster.


Moderated by  Damon Linkous, phill, Rolf_Nilsen 

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