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Light Wind

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alstorer View Drop Down
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Post Options Post Options   Quote alstorer Quote  Post ReplyReply Direct Link To This Post Posted: 12 Oct 08 at 10:36pm
Originally posted by G.R.F.

Had another drifter today then having drifted out to the line, they very
sensibly abandoned.

As to the sailing heeled point, which also worked well for us on the RS500, it
heels your plate which gives a semi-foiling effect, we used to use it well on
round boards, 'back in the day'. Flat isn't always fast, despite what you
might read in the sailing books, it also, again depending on the particular
hull shape reduces wetted area.


Indeed, but again depending upon the hull shape, heel creates turning motion which has to be c**tered either by slightly off sail trim (jib in a bit too far/main out a bit) or by using a little rudder. Which is, of course, why there's an art to the game. If it was all simple, we'd all be rockstars.
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Post Options Post Options   Quote redback Quote  Post ReplyReply Direct Link To This Post Posted: 15 Oct 08 at 12:22am
I don't think its the hull shape which has much effect.  If you think about the centre of effort and the centre of resistance you'll suddenly realise that when you heel the boat you introduce quite an offset.  No wonder the boat heads up when heeled to leeward!  But in light winds that bit of weather-helm it produces can be an advantage and the increase in wavemaking resistance is slight.
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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: 23 Oct 08 at 11:17pm

Ideal light wind heel is totally hull shape dependant.  On some hulls (eg the laser, the laser 2 and the 3000) you can gain in the light by heeling the boat by about 5 degrees and putting lots of weight forwards.  Sort of "nose down and heeled".  The under water hull shape is then narrow and points diagonally across the boat from the leeward quarter to the bows without causing much unwanted steering - though the boat should crab to windward a bit.

I think the key thing is to accompany the heel with pushing the nose down.

Think it works on a merlin too.  Try it, report back!

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G.R.F. View Drop Down
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Post Options Post Options   Quote G.R.F. Quote  Post ReplyReply Direct Link To This Post Posted: 24 Oct 08 at 9:50am
If it's anything like round boards, which it undoubtedly is, it's about
balance.

Enough nose down to reduce the 'swirl' of the stern but not so much as to
introduce more wetted area of resistance than you have relieved yourself
of at the back works well.

Boats/Boards that are narrower at the nose introduce water line length
with reduced surface area which is why it works. Examples of boat that
are very difficult to do anything with in the light stuff like the L3000 with
it's flat grabby bottom and shallow stern rocker that even with the crew
sat right on the nose, it barely lifts the stern and heeling achieves not a
lot except to help the sail shape.

I should imagine that a merlin rocket would react well to the technique
described, it has a fine entry and rounded bottom, looks one hell of a
pointer, at least the one I saw did, do they vary from boat to boat, are
some 'clinker built' and others not, are their rigs 'open' in design/sail size
shape? Are they not 'river' boats, they must be good low wind performers.

I bet if it's a drifter they'll be heeling them, then at the very quietest
moment when everyone's concentrating their hardest, that guy with the
General Lee will hit the horn..




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tgruitt View Drop Down
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Post Options Post Options   Quote tgruitt Quote  Post ReplyReply Direct Link To This Post Posted: 24 Oct 08 at 10:41am
Yes they are great light wind boats, but quick to their handicap in any wind really. They are all 'clinker' as this is in the rules. I think the rigs have some openness about them, but the most efficient set up and sail size/ratio seems to be what everyone is going for at the moment, so there isn't much difference at all. Merlin sailors, please feel free to correct me...
Needs to sail more...
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Post Options Post Options   Quote Chew my RS Quote  Post ReplyReply Direct Link To This Post Posted: 24 Oct 08 at 10:57am

Whilst the rig rules are fairly open, they all have the same sail shape because that shape gives the most area within the allowable measurement limits.  So the sail shape is not really dictated by efficiency, but rather, by the rules.  They are very beautiful and well refined boats, but not cheap (or light).

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Post Options Post Options   Quote NickA Quote  Post ReplyReply Direct Link To This Post Posted: 24 Oct 08 at 2:27pm

Tipping a V 3000 over 5 degrees works a treat - but you do have to get it at the point of heel at which it is least stable.  Ie where it's narrowest.  Also gives you the opportunity of hooching it back upright again when the wind reappears

Think GRFs old purple monster was probably so heavy nothing would reduce it's wetted area short of filling it with helium!!!

Merlins = handicap bandits supreme, and do those things POINT.. 

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