Hi Macca, yes sheeting angle is important, but the veiw was that just lowering the jib 1.5" made it faster without considering were the sheeting angle is. PS are you sailing this weekend call me tomorrow LOV Mark

goodnight all <img src="http://www.catsailor.com/forums/images/graemlins/wink.gif" alt="" />

Thanks Mark, and goodnight <img src="http://www.catsailor.com/forums/images/graemlins/laugh.gif" alt="" />

I am not taking recognized best practice from the "gods" as gospel, thats how this thread got started after all. <img src="http://www.catsailor.com/forums/images/graemlins/grin.gif" alt="" />
But I am a bit surprised that you are hesitant to post your opinions/views due to different interpretations of your writings. Hope you continue to post here and don't let the "mob" get to you! It's pretty civilized here compared to other forums.

Lowering the jib on the forestay has the same effect as moving the track aft, it opens the slot. It's all relative to the geometry of the jib and the track.

So, Rolf - I think what I have gleaned here is that;

• 1. Fully-battened jibs have a finer entry, but as a result, potentially a narrower performance groove.
  2. Fully-battened jibs hold shape better in certain conditions, and jib-life is somewhat extended.
  3. The lowered tack position (sans furler) can be an advantage if sheeting angle, luff tension and slot are adjusted properly.
  4. Battens in the jib are as critical as battens in the main, and adjustment to tension will be as important (no surprise there).
  5. Mark Laruffa needs to get more sleep.

That sum it up so far?

Sounds like the sum up that I would have concluded.

Dan

hi guys
here is my perhaps unusual take on jibs...
lowering the tack has the the same effect as moving the jib leads aft. this lets the head fall to leeward, opening the top of the slot, but possibly causing leech flutter. all common knowlege.
i sail in strong winds and came up with a fully battened 110%jib that roller furls. the battens are parallel with the luff. it made us point better and stopped leech flutter w/o moving the leads forward. actually, only the bottom batten is full. the other 2 are just very long. i have done sail making and have an industrial machine. this idea is offered for free. i'm not trying to sell jibs here. for our sailing this has been a huge improvement in both sailing performance and ease of jib furling. there photos if intrest is there.
ciao

Roller furling, vertical battens:


Standard on the Hobie Bravo! <img src="http://www.catsailor.com/forums/images/graemlins/shocked.gif" alt="" />

Good point. For this reason I will try a full battened jib but with battens PARALEL TO THE HEADSTAY. It will be like the old Supercat battens, only extended to the foot.
The idea is to gain area and maintain shape while still being able to roll it up.
Anyone tried this? Suggestions and comments are welcome.

John,

I have not concluded on much yet, except on your point 5. <img src="http://www.catsailor.com/forums/images/graemlins/grin.gif" alt="" /> Hope Mark is back tomorrow.

Finer entry? Why is this not possible without full battens? Longer life, perhaps? The low foot.. no big deal in my opinion, as there are more turbulence and less wind further down. But no reason against having the same geometry/outline with or without full length battens.
All in all, with over 600 views on this thread, no reports have been made on superior performance with fully battened jibs. Why? Perhaps becouse there have not been done much testing on it? I dont know, but would dearly like to.



BTW: I asked earlier wether there had been selftacking fully battened jibs before the Tornado. I got an reply by e-mail explaining that the RC-27 had a fully battened jib from the late '80s and the Supercat 22 from '91.

I would love to see those photos please.

Yes, yes, yes..why do roller furling jibs flog???like people who can't find the indicater before turning.
Lip luff..piut a little tension on the jib... why do jibs flog?

Fair comment - To be honest the rig may be some what tighter which I hadn't really considered till now. On the other hand - maybe it was just a good day out. Ask me again tomorrow night <img src="http://www.catsailor.com/forums/images/graemlins/smile.gif" alt="" />



Once again you could be right. I did move the jib sheet up 1 hole on the normal setting though. I don't have enough knowledge to pinpoint exactly what the cause was beyond what I tried and what I observed.

Tiger Mike

Because nothing keeps the traveler from moving inward. The wind pressure can swing it back and forth too.

ah. I understand..self tacker...

pdf attached.
this is the 3rd batten setup on this jib. works for me.

many thanks for that.