SailNet Community - View Single Post - Overlapping versus Blade headsails which is quicker ?
View Single Post
post #4 of Old 04-27-2012
Senior Member
RichH's Avatar
Join Date: Jul 2000
Location: Pennsylvania
Posts: 4,543
Thanks: 42
Thanked 257 Times in 243 Posts
Rep Power: 18
Re: Overlapping versus Blade headsails which is quicker ?

Originally Posted by bill@custardpie View Post
OK maybe this is a simplistic question but:

Scenario :

Beat to windward in a Force 3-4, flatish water, standard production 21st century cruiser/racer fractionally rigged


If you have a choice between an overlapping 120% genoa sheeted around the shroud or a smaller say 100% blade jib sheeted to barber haulers inside the shroud.

Lets assume the blade will get you close to the speed the polar diagram predicts. Will you get anything more from the 120% genoa ?

Which do you go for ?
On a frac rig, most probably the blade will result in a faster sail plan output .... and enhanced pointing ability.

Reason: a blade 'can' be sheated INSIDE of the shrouds and without fouling on the spreaders .... and can be more easily adjusted to the defining 'slot open' distance. In F3-4 that 'attack angle' (tack to clew) is probably going to be somewhere on that 10 line offset from the tack.

If the 120 fouls with the spreader .... "no soup for you !"

Of course, you yourself have to do 'trials' with reference to correct 'slot open distance' vs. VMG once you get close to your final decision. When youre in this final stage of optimization, forget any so-called backwinding to the main ... simply finalize your plan based on speedo output and VMG.
RichH is online now  
Quote Share with Facebook
For the best viewing experience please update your browser to Google Chrome