15-03-2015, 10:26
Salve
Come dimensionare un JIB4? Un Jib3 é un 80%,troppo grande, e il triangolo di prua è circa 60+sqm
Jib4:
DEVE, DOVREBBE funzionare di bolina larga 60gradi, sotto F8, anche senza randa (terza mano al 50%, ovvero 30+ sqm).
Gli storm jib, o jib5, sono di 12-13 mq ma non servono per manovrare in rotta stretta.
Esiste un buco tra ammainare Yankee65%, trinchetta, e randa3, e poi andare, senza randa, con solo storm jib.... assumo che la trinchetta non bolina, per questo pensavo a un jib4....su strallo anteriore
Qui sotto, i dati... :-) grazie :-) :-)
Today, 08:52
TheThunderbird
Hi everyone!
Boat is a Nauta 54' of Kaufman 1989.
Cutter rig, 23tonnes, in the sail plan I = 22m or 73'.
I got rid of 2furling gear, which I hate.
I plan for an Olympic jib 95%, staysail, yankee 65% storm jib (12sqm, 130sqft)
Question: I feel like I need a JIB 4 for some upwind (60degrees...) in heavy conditions, say F7-8, where the Yankee 65% is too large and less effective...
Some say size is 13.5% of I2 (squared) in so far a storm jib is anything between 3,5 to 5% of I2....but 40+sqm sounds too large to me
In said conditions, 23tonnes displ. 9Tonnes ballast, 8'draft... is there a formula to calculate how large a Jib4 can be?
I mean, the maximum bearable Upwind jib without mainsail, but NOT a storm jib yet...
Thanks
Come dimensionare un JIB4? Un Jib3 é un 80%,troppo grande, e il triangolo di prua è circa 60+sqm
Jib4:
DEVE, DOVREBBE funzionare di bolina larga 60gradi, sotto F8, anche senza randa (terza mano al 50%, ovvero 30+ sqm).
Gli storm jib, o jib5, sono di 12-13 mq ma non servono per manovrare in rotta stretta.
Esiste un buco tra ammainare Yankee65%, trinchetta, e randa3, e poi andare, senza randa, con solo storm jib.... assumo che la trinchetta non bolina, per questo pensavo a un jib4....su strallo anteriore
Qui sotto, i dati... :-) grazie :-) :-)
Today, 08:52
TheThunderbird
Hi everyone!
Boat is a Nauta 54' of Kaufman 1989.
Cutter rig, 23tonnes, in the sail plan I = 22m or 73'.
I got rid of 2furling gear, which I hate.
I plan for an Olympic jib 95%, staysail, yankee 65% storm jib (12sqm, 130sqft)
Question: I feel like I need a JIB 4 for some upwind (60degrees...) in heavy conditions, say F7-8, where the Yankee 65% is too large and less effective...
Some say size is 13.5% of I2 (squared) in so far a storm jib is anything between 3,5 to 5% of I2....but 40+sqm sounds too large to me
In said conditions, 23tonnes displ. 9Tonnes ballast, 8'draft... is there a formula to calculate how large a Jib4 can be?
I mean, the maximum bearable Upwind jib without mainsail, but NOT a storm jib yet...
Thanks