reefing and outhaul loads

Rigging components, external fittings and Sails
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Whimsical
Posts: 370
Joined: Sat Apr 28, 2007 8:01 pm
Location: Fremantle W.A.

reefing and outhaul loads

Post by Whimsical » Fri May 10, 2013 1:30 pm

Anyone have an good idea as to what the loads are on a single line reef and on the outhaul lines. What i need to know is how much pull is needed, in Kgs, to make a decision on how i will do it. A single line pull and not a multi-part purchase.
Main sail area is 50 sq meters but not sure of fabric yet.

Finally
Posts: 217
Joined: Sat Jul 04, 2009 9:24 am
Location: Cairns

Re: reefing and outhaul loads

Post by Finally » Fri May 10, 2013 6:20 pm

I recall that the Harken catalogue had formulae for calculating block loads but I think it was for mainsheet and genoa loads only - not outhauls / reefing.

It might still be a good place to start.

puremajek
Posts: 751
Joined: Thu May 04, 2006 7:36 pm
Location: Brisbane Australia

Re: reefing and outhaul loads

Post by puremajek » Sat May 11, 2013 3:34 pm

Have a feeling the Ronstan 'dog-a-log' has something too. They have a booklet about 1cm thick thats full of bits, but not sure what areas it caters too. I picked up data from it for my steering break limits.
James
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seamad1250
Posts: 19
Joined: Wed Apr 27, 2011 10:46 am

Re: reefing and outhaul loads

Post by seamad1250 » Sun May 12, 2013 8:21 am

Mike,
Think it maybe a bit like the mainsheet question I asked the other night, 2 pretty disparate answers. Other factors like righting moment appear to play a role as well...
http://www.practical-sailor.com/issues/ ... 967-1.html

44c
Posts: 1147
Joined: Tue Aug 08, 2006 5:08 am
Location: Hervey Bay, Qld

Re: reefing and outhaul loads

Post by 44c » Sun May 12, 2013 8:58 am

If it helps, I only have a single-speed size 20 winch for reefing and outhaul. Only use 8mm spectra too. So while I can't be specific, loads aren't high. Main is 55m2.

I've considered fitting a bigger 2 speed reefing winch, but not for more power, I'd just like it to be faster sometimes.

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