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

[Robert E. Sloat]

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.