Hope this helps,
Mac Davis, Kelpie, WWP19#804, Aripeka, Fl
-----Original Message-----
From: Eric Pederson <eric@winternet.com>
To: wwpotter <wwpotter@tscnet.com>
Date: Monday, April 12, 1999 10:52 AM
Subject: Re: Man Overboard
>- - - - - - - - - - - - - - - - - - - - - - - - - - -
> West Wight Potter Website at URL
> http://www.lesbois.com/wwpotter/
>- - - - - - - - - - - - - - - - - - - - - - - - - - -
>It has been rumored that JBlumhorst@aol.com said:
>>
>> This procedure might even damage a P119; I don't know if the P19
gooseneck is
>> strong enough to survive long enough to get the MOB on board. The boom
is, I
>> think even if it does bend a little, but maybe not the gooseneck
>
>Hmmm... I'm considering beefing up my topping lift to 1/4" specifically to
>support MOB recovery using the boom. I hadn't considered the sheer force
>on the gooseneck, but, with the lifting tackle attached near the end of
>the boom (maybe right at the topping lift attachment), and the boat heeling
>with the weight of the MOB, I'd think the vast majority of the force would
>be straight down. That downward force would be taken by the topping lift,
>not the gooseneck. I'm very curious about your experiment with the spare
>boom.
>
>> I was talking to a girlfriend of mine with thirty years cruising
experience
>> yesterday. She has a 4:1 block and tackle on a heavy-duty velcro strap
that
>> she keeps in the cockpit. (It's like the one sailmakers give you for the
>> clew of a loosefooted mainsail; you could hoist a grand piano with it)
>
>Correct me if I'm wrong, but lifting my 225 lb self with a 4:1 arrangement
>would require 56.25 lbs of force, right? We experimented this weekend with
>the mast raising tackl, which gives 3:1. I secured one end to an overhead
>tree branch and the other end to me. My wife tried to hoist me off the
>ground, and had a difficult time of it. The 3:1 purchase would have needed
>75 pounds of force. I'm going to rig a 4:1 to see if it seems good enough
>for her, but I think 5:1 might be the way to go.
>
>Of course, the triple block with cam cleat needed for one end of the 5:1
>system is not cheap. If 4:1 works well, I'm may just get one of those
>Garhauer vang kits for the purpose.
>
>--
>Eric L. Pederson
>P-19 #970, Necessity
>Bloomington, MN