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Mainsheet route through blocks |
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Jontie999 
Sub Lieutenant 
Joined: 22 December 2022 Location: Bangor Status: Offline Points: 10 |
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 Topic: Mainsheet route through blocksPosted: 17 April 2023 at 19:03 |
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We have just purchased a 2011 400 and are delighted. We notice that she
is not pointing well and are questioning whether the route through the blocks
(no traveller) is correct. A neighbouring owner has told us we are missing a
double block.
I can't
find any diagram in the official web site or manual, nor on this forum. Would
anyone be able to point me to a diagram or provide a photo? The photo below is
the best I can find.
Thank you. Paul  |
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PJ
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PekkaL
Commander 
Joined: 01 January 2005 Location: Finland Status: Offline Points: 80 |
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Posted: 17 April 2023 at 19:48 |
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The starboard block is hidden behind the life raft in the photo, but I would expect there to be a block.
In that case the main sheet should start from the boom attached block's now empty becket, go through the starboard block, then through boom block to port block ... I guess the current set up's purchase ratio (? is this the correct term?) is less than 1:3. Adding the starboard block would double it. I have 371 with the main sheet at the end of the boom with 1:6 purchase ratio, but I've added an additional block that results 1:12 purchase ratio for heavy weather tacking. Your current set up is definitively undersized.
Edited by PekkaL - 18 April 2023 at 12:04 |
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Pekka Leppanen, "Vedette"
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Dogscout
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Joined: 10 July 2017 Location: Wandering About Status: Offline Points: 136 |
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Posted: 17 April 2023 at 23:21 |
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Main sheet blocks on boom - myHanse - Hanse Yachts Owners Forum
What I posted on the 430 forum a few months ago. maybe it will help.
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Adventure awaits
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Jontie999
Sub Lieutenant
Joined: 22 December 2022 Location: Bangor Status: Offline Points: 10 |
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Posted: 18 April 2023 at 08:37 |
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Thank you - much appreciated - will try out at the weekend.
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PJ
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PekkaL
Commander
Joined: 01 January 2005 Location: Finland Status: Offline Points: 80 |
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Posted: 18 April 2023 at 12:10 |
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Additional comment: I disliked the Lewmar blocks Hanse installed: their cheeks are soft plastic which bend easily, and the sheet may end up between the cheeck and the rotating sheavel, potentially damaging both the block and the sheet.
I've changed my Lewmar blocks to Harkens, which also have less friction. After paying for the Harkens I know why Hanse installed Lewmars...
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Pekka Leppanen, "Vedette"
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chrisn
Sub Lieutenant
Joined: 24 July 2017 Location: seattle Status: Offline Points: 15 |
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Posted: 25 April 2023 at 22:52 |
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I connect lines to the end of the boom and run them snatch blocks attached to the rail and to the primary winches. It allows me to pull the boom further into the center than you can accomplish with the main sheet alone and that helps pointing. At 8 knts we can easily sail a 28AWA.
Something else to check is your back stay tension. If your mast is raked it will affect your pointing.
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Jontie999
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Joined: 22 December 2022 Location: Bangor Status: Offline Points: 10 |
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Posted: 26 April 2023 at 08:31 |
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Thank you -- will give it a go.
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PJ
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Issywa
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Joined: 13 April 2022 Location: Seattle Status: Offline Points: 20 |
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Posted: 15 September 2023 at 00:44 |
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Chrisn - I guess my goofing off this summer is why I missed your comments regarding a line off the end of the boom to adjust sail trim. This is exactly what I have been thinking about doing on my 430. 28AWA…. I like it! I find that when I get into the low 30’s, my boat starts to complain. How do you attach the sheets to get far enough outboard? My toe rails are solid aluminum. I’ve considered adding a piece of aluminum machined to fit inside the toe rail and span 3 or so fasteners (hope this makes sense) so I could then drill through the toe rails to attach a block.
I don’t have an adjustable back stay but the pre-bend in my mast is pretty significant. Sailor friends of mine are somewhat in awe of it - having a rigger verify it is on the “ to do” list.
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chrisn
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Joined: 24 July 2017 Location: seattle Status: Offline Points: 15 |
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Posted: 15 September 2023 at 00:54 |
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My boat is a 2010 407e that came with pad eyes and blocks on the rail and aux winches for the gennaker. I run the lines from the end of the boom, through the blocks and to the aux winches.
The setup works well and helps us point. Also allows us to fine tune the main. |
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Martin&Rene
Vice Admiral 
Joined: 06 December 2009 Location: United Kingdom Status: Offline Points: 805 |
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Posted: 15 September 2023 at 12:52 |
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In this thread there is an alternative way of controlling the boom mounting blocks on strops which I know works well.
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Martin&Rene Hanse 341 Dipper Wheel steering, 3 cabin layout, normally based in Scotland
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