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speed difference between tacks |
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ellistine 
Really should get out more 
Joined: 06 Mar 08 Online Status: Offline Posts: 762 |
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 Topic: speed difference between tacksPosted: 01 Jun 09 at 1:15pm |
This Sunday it was more a case of which tack gives you the most cooling breeze! |
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Guest
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Joined: 21 May 04 Location: United Kingdom Online Status: Offline Posts: 0 |
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Posted: 01 Jun 09 at 12:40pm |
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Probably going fastest on the tack which give you more sun
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ellistine
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Joined: 06 Mar 08 Online Status: Offline Posts: 762 |
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Posted: 01 Jun 09 at 12:14pm |
Doh. And I even bought your book 
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Jon Emmett
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Joined: 15 Mar 04 Location: United Kingdom Online Status: Offline Posts: 988 |
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Posted: 01 Jun 09 at 12:11pm |
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Eeek equal shroud length that is a whole can of worms... bent foils etc. etc.
The tide in the harbour is significiant and not really something I could get into in a forum post! |
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ellistine
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Joined: 06 Mar 08 Online Status: Offline Posts: 762 |
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Posted: 01 Jun 09 at 12:00pm |
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Jon, you've spent a lot of time in Portland Harbour,
what tidal effects are typical there? I perhaps wrongly assumed it would only really be noticeable near the entrances and perhaps near Ferry bridge. |
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Scooby_simon
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Joined: 02 Apr 04 Location: United Kingdom Online Status: Offline Posts: 2415 |
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Posted: 01 Jun 09 at 11:58am |
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Tide would be top of the list Are your shrouds the same length and thus mast vertical? Mast bent? |
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Wanna learn to Ski - PM me..
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Jon Emmett
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Joined: 15 Mar 04 Location: United Kingdom Online Status: Offline Posts: 988 |
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Posted: 01 Jun 09 at 11:53am |
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There are always pressure difference/current dfferences... The faster you are going the sooner you will get into the different conditions.
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JimC
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Joined: 17 May 04 Location: United Kingdom Online Status: Offline Posts: 6662 |
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Posted: 01 Jun 09 at 11:39am |
That's almost always tide... |
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ellistine
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Joined: 06 Mar 08 Online Status: Offline Posts: 762 |
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Posted: 01 Jun 09 at 11:16am |
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Possibly. I'll have a look at that next time.
Presumably it has to be the water or the boat, there's nothing odd about the wind that I don't know about? It seems to happen downwind too with the kite up. You can be drifting along going nowhere and then throw in a jibe and your off! |
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Jon Emmett
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Joined: 15 Mar 04 Location: United Kingdom Online Status: Offline Posts: 988 |
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Posted: 01 Jun 09 at 11:00am |
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You are probably more lined up with the chop on one tack than the other.
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