Projection 762 Help please?

   Tim, 
How big is the kite, what weight are you and what is the size of your #1.
Reducing our spinnaker to 46sqm and re-measuring the sails has brought us down to 0.966.  To compensate for reduction in kite size we have pushed the halyard 600mm higher up the mast - this worked very well for Pink Gin last year and we have also fitted a choker from old halyard point for when it is blowing.
GBR7620R

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garth weaver Send Private Message Find Member's Posts Groupie Joined: 09 Sep 06 Online Status: Offline Posts: 74	Post Options Post Reply Quote garth weaver Report Post Quote Reply Topic: Projection 762 Help please? Posted: 28 Mar 08 at 7:17pm
	Tim, How big is the kite, what weight are you and what is the size of your #1. Reducing our spinnaker to 46sqm and re-measuring the sails has brought us down to 0.966. To compensate for reduction in kite size we have pushed the halyard 600mm higher up the mast - this worked very well for Pink Gin last year and we have also fitted a choker from old halyard point for when it is blowing. GBR7620R

TimC Send Private Message Find Member's Posts Visit Member's Homepage Posting king Joined: 18 Oct 06 Location: United Kingdom Online Status: Offline Posts: 153	Post Options Post Reply Quote TimC Report Post Quote Reply Posted: 31 Mar 08 at 10:07am
	Our new SPA is 45 and our HSA is 17.02 Empty weight is 1308kg Tim
	J92s GBR 9224R "Upstart" twitter.com/upstart_racing

garth weaver Send Private Message Find Member's Posts Groupie Joined: 09 Sep 06 Online Status: Offline Posts: 74	Post Options Post Reply Quote garth weaver Report Post Quote Reply Posted: 31 Mar 08 at 7:32pm
	Thanks Tim, I think you will notice a big difference downwind with the bigger kite. Should make you more comptetive under IRC in medium wind conditions. We are a bit heavier and smaller #1.

TimC Send Private Message Find Member's Posts Visit Member's Homepage Posting king Joined: 18 Oct 06 Location: United Kingdom Online Status: Offline Posts: 153	Post Options Post Reply Quote TimC Report Post Quote Reply Posted: 31 Mar 08 at 9:02pm
	I hope so! Sailmaker thinks so too. I'm looking forward to finding out anyway (first race on sunday). We've always found downwind the hardest work in light airs so this should improve things
	J92s GBR 9224R "Upstart" twitter.com/upstart_racing

Oli Send Private Message Find Member's Posts Really should get out more Joined: 23 Mar 05 Online Status: Offline Posts: 1020	Post Options Post Reply Quote Oli Report Post Quote Reply Posted: 04 Apr 08 at 4:22pm
	could people state their irc handicaps with and without spinnakers and the spin size please, just seeing if there is a basic factor of spin area / point ours is 0.966 0.953 with 38m spin might be complete nosense but im bored at work!
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garth weaver Send Private Message Find Member's Posts Groupie Joined: 09 Sep 06 Online Status: Offline Posts: 74	Post Options Post Reply Quote garth weaver Report Post Quote Reply Posted: 04 Apr 08 at 6:59pm
	I reckon its about .001 point per 2sqm of kite area. At 38sqm your kite seems well underpowered, our IRC numbers are: 0.966 with 46 sqm kite and 0.948 without - no correlation with your figures I am afraid. Probably the best way to optimise a P762 is to get the boat weighed, use 130-140% genoa and 46-48sqm kite with a raised halyard position.

Oli Send Private Message Find Member's Posts Really should get out more Joined: 23 Mar 05 Online Status: Offline Posts: 1020	Post Options Post Reply Quote Oli Report Post Quote Reply Posted: 05 Apr 08 at 9:28am
	hi garth, thanks for the reply. Thats what im trying to find out, i know spinnakers dont mean much in irc and the fact that your spinnaker is alot bigger and you have the same handicap goes some way to shows that. our factor is 2.92m2 per point and yours is 2.55 im liking the idea of a raised haylard more and more, but would need a larger kite to accomplish that.
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chic Send Private Message Find Member's Posts Posting king Joined: 20 Dec 06 Location: Scotland Online Status: Offline Posts: 146	Post Options Post Reply Quote chic Report Post Quote Reply Posted: 05 Apr 08 at 4:06pm
	We're still not planning any IRC races this season so haven't applied for a certificate. 38sqm is the size of our smallest kite - there's a big difference in performance using a bigger one! Garth, if Duncan isn't interested in your kite could you pm me with details of condition etc of your spare kite?? We completely trashed our club racing kite during the first race of the season.. Chic

TimC Send Private Message Find Member's Posts Visit Member's Homepage Posting king Joined: 18 Oct 06 Location: United Kingdom Online Status: Offline Posts: 153	Post Options Post Reply Quote TimC Report Post Quote Reply Posted: 07 Apr 08 at 10:18am
	We are 0.972 with a 45sqm kite, 0.955 without The other projectin at our club rates 0.962 so we're giving them planty of time. Had our first race on sunday (in the snow) and the bigger kite is a massive improvement.
	J92s GBR 9224R "Upstart" twitter.com/upstart_racing

Oli Send Private Message Find Member's Posts Really should get out more Joined: 23 Mar 05 Online Status: Offline Posts: 1020	Post Options Post Reply Quote Oli Report Post Quote Reply Posted: 07 Apr 08 at 5:10pm
	so thats 2.92, 2.55, and 2.64 with an average of 2.70. so if we had a new kite of 46m2 it would roughly be a hit of 3 points. interesting....
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