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speed difference between tacks

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ellistine View Drop Down
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Post Options Post Options   Quote ellistine Quote  Post ReplyReply Direct Link To This Post Posted: 01 Jun 09 at 1:15pm
Originally posted by Guest#260

Probably going fastest on the tack
which give you more sun

This Sunday it was more a case of which tack gives you
the most cooling breeze!
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Post Options Post Options   Quote ChrisJ Quote  Post ReplyReply Direct Link To This Post Posted: 01 Jun 09 at 4:13pm

Sometimes, the wind can get "stuck" in the sail: too much kicker / mainsheet tension / battern tension / fullness in the sail etc. You don't need much "too much" for the boat to be saiing slower than it could.

Then you tack / gybe, and shake all the wind out, re-sheet, re-angle the boat, pick a wind shift, and get moving again.

Happens ALL the time inland!

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Hector View Drop Down
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Post Options Post Options   Quote Hector Quote  Post ReplyReply Direct Link To This Post Posted: 01 Jun 09 at 5:46pm
Sailing on a lift almost always feels better than a backer.
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NickA View Drop Down
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Post Options Post Options   Quote NickA Quote  Post ReplyReply Direct Link To This Post Posted: 01 Jun 09 at 6:38pm

If it's ALWAYS faster on one side than the other then it isn't tide or direction of chop or "stuck wind" (really ???) surely. 

Probably different length shrouds or lowers (measure them & check which hole in the shroud plate they're in) or failing that a rudder that isn't hung quite vertical or a warped centreboard.  Boat builders aren't always exact in their placement of cleats, blocks and fairleads either

Anything that's not symetric could do it.  Including your crew's legs probably!

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Jon Emmett View Drop Down
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Post Options Post Options   Quote Jon Emmett Quote  Post ReplyReply Direct Link To This Post Posted: 01 Jun 09 at 8:01pm
I would disagree a tack where you are going straight into the chop is often slower than one where the chop is side on.
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Post Options Post Options   Quote Lukepiewalker Quote  Post ReplyReply Direct Link To This Post Posted: 01 Jun 09 at 9:57pm
Rather than 'stuck wind', I would go with 'stalled sail'
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ellistine View Drop Down
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Post Options Post Options   Quote ellistine Quote  Post ReplyReply Direct Link To This Post Posted: 01 Jun 09 at 10:06pm
Originally posted by NickA

If it's ALWAYS faster on one side than
the other then it isn't tide or direction of chop
or "stuck wind" (really ???) surely. 


Probably different length shrouds or lowers (measure
them & check which hole in the shroud plate they're in)
or failing that a rudder that isn't hung quite
vertical or a warped centreboard.  Boat builders aren't
always exact in their placement of cleats, blocks and
fairleads either


Anything that's not symetric could do it.  Including
your crew's legs probably!


I'll start to check but I don't reckon it's always a
port or starboard tack that's quicker (ie boat
problems). I'm pretty sure it varies.

The Sunday just gone it was easier to keep the crew out
on the trapeze one way than the other.

It probably is the tide. Being new to sailing I've been
ignoring it but I suppose I'll have to start paying
attention to it.


Edited by ellistine
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Jon Emmett View Drop Down
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Post Options Post Options   Quote Jon Emmett Quote  Post ReplyReply Direct Link To This Post Posted: 01 Jun 09 at 11:15pm
If it was easier to keep the crew out on one tack than the other it may well be a pressure difference (sailing into/away from more wind). Tidal differences are still relatively gradual.
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hollandsd View Drop Down
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Post Options Post Options   Quote hollandsd Quote  Post ReplyReply Direct Link To This Post Posted: 02 Jun 09 at 1:01pm

sailing at hythe, i find that in certain conditions wiring is much easier on one tack than the other i found this was due to differing angle of the current pushing on the foil, if you get the current pushing the foils the wrong way then the boat feels awful, but if you get it right the gains that can be made are quite supprising.


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Garry View Drop Down
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Post Options Post Options   Quote Garry Quote  Post ReplyReply Direct Link To This Post Posted: 02 Jun 09 at 5:34pm

Checking your mast is straight is relatively easy, for one way look at:

http://www.youtube.com/watch?v=cSyrc3QUssE

- there is no sound worth listening to with this video clip. 

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