[C320-list] Tuning Hood jib furling - Sheet lead position

[Scott Thompson]

You will not believe the improvement in performance with that new 
tape-drive sail compared to the OEM 150%!


On 1/7/2012 10:48 AM, Robert E. Sloat wrote:
>
> John-Except for deep running, the angle of attack of your sails to
> apparent wind is the same. Angle of attack is the angle between the
> apparent wind and the chord line of the sail. The angle of the boat to
> apparent wind doesn't generally matter. So the important thing is the
> angle of the sail to apparent wind.
>
> I would start with the halyard at the lower end of tension for the wind
> conditions. More halyard tension moves draft forward. Also consider
> fiddling with the Genoa sheet lead position. Move it aft to increase
> sheeting effects on the lower part of the sail. The lead may be so far
> forward that you are not distributing the load enough on the lower part
> of the Genoa when sheeting it in. If the top leeward telltales on the
> Genoa luff are stalling when you observe your problem then the Genoa
> lead needs to go aft which will allow the top of the sail to fall off a
> little reducing its angle of attack and the bottom of the sail to
> tighten increasing its angle of attack. You want both the top of the
> sail and the bottom to have balanced angles of attacks and the sheet
> lead position is the best way to do this. The leading edge of the sail
> and the furling mechanism should respond to the sheet tension and lead
> positions.
>
> If you don't have the Garhauer E-Z Glide adjustable jib lead blocks
> consider them. I got a set a few weeks after commissioning and it is one
> of the best additions made to the boat.
>
> I leave the furling line loose enough for the tube to rotate as needed.
>
> Good luck with your Genoa. And let us know if this helped. I assume the
> tape drive was built for the boat.
>
> PS-I have a UK tape drive Genoa on order for the upcoming season and am
> getting excited about playing with it and hopefully observing
> improvements over the OEM Catalina 150 that came with the boat.
>
> Bob Sloat
> S/V Savannah Hull 894 (2002)
> ----- Original Message ----- From: <jpmesa at aol.com>
> To: <c320-list at catalina320.com>
> Sent: Tuesday, January 03, 2012 3:33 PM
> Subject: [C320-list] Tuning Hood jib furling
>
>
>
> I am havinga problem getting the front edge of my 1995 Hoodjib furling sail
> to line up right. The front edge ofmy UK tape drive seem to settle in
> atabout 45* angle to the helm which is ok for running and broad reach but
> notwhen I heading up wind. Ican walk forward and twist the furling tube aft
> to line up nicely but as soonas I let go it will fall back to the same
> position. When sailing up wind I tighten the sheet to about an inch or so
> offthe spreader (depending on the wind) butI think I could point a few
> degree higher if I can work out this problems. Anyideas ? I have played
> with my furling line locking it off in different settings but that didn't
> seen to help.
> Thanks John Holokai 2
> PS: Itlooks like the very top of the jib seem to line up OK and then the
> sail twistoff as you follow it further down the tubes.
>

-- 
Scott Thompson
Surprise, #653