Hi

Due to low winds in the summer evening. (3-8 knots) <img src="http://www.catsailor.com/forums/images/graemlins/frown.gif" alt="" />

I am planning to put a reaching kite on my boat for evening fun sailing. <img src="http://www.catsailor.com/forums/images/graemlins/smile.gif" alt="" />

Wouter has said it is not possible to do this inside the class rules on another forum, so I should go for as big as possible, unless anybody can say a reacher is ok an F16.

bye

Making an efficient reacher/code 0/hooter within our class rules would be difficult in my opinion. As long as you understand that you can not sail under the F16 handicap rating with such a sail, I think it is very cool of you to try it out.
What sailmaker do you plan to use? Will you reinforce your bowsprit and other elements to avoid breaking something?

John,

What Rolf says; just get an truly optimized one and forget about F16 class rule compliance. It is for recreational sailing anyway, right ? Outside of events regulated by F16 class rules ?

If you try to make it compliant then you'll be spending a considerable amount of money for a considerably suboptimal sail and where is the fun in that ?

Wouter

John,

You may want to wait for the final results at the Olympic Tornado regatta before deciding to purchase a code-0 (hooter)

http://www.catsailor.com/forums/sho...er=155359&Main=154579#Post155359

That is when you looking to increased light wind perform in an upwind and downwind sense over just reaching back and forth.

Wouter

Or go two snuffers with two kites <img src="http://www.catsailor.com/forums/images/graemlins/grin.gif" alt="" /> <img src="http://www.catsailor.com/forums/images/graemlins/grin.gif" alt="" />

Will be interesting to see what Lovell and Ogeltree have to say after the games. Apparantly they have not had success with the sail so far.

John,

Please read this section of the class relues regarding how to measure a Spi.

Box rule

And in particular:

There is nothing stopping a F16 sailor sporting a code zero with a straight luff.......you just need to make sure the half girth is 75% of the foot.......therefore if you take 400mm off the luff, you will need to add to the leech.

400mm of extra leech round (roach) is no that much over a 7500mm leech.? <img src="http://www.catsailor.com/forums/images/graemlins/shocked.gif" alt="" />

How deep you have the sail designed will be the key.!! <img src="http://www.catsailor.com/forums/images/graemlins/laugh.gif" alt="" />

For a code 0 I would think 400mm in addition to what was already there was rather a lot to add?? Extra cloth in the leech dont add much performance wise in current kites in my opinion.
Perhaps oversize the foot to compensate and get a straighter or even hollow leech? Have not played with the numbers though.

If you are rec sailing, why would you care about going max upwind? If I was to spend a buch of money on something, I would want to make it as versitile as possible, which means class legal so I could use it to race, if and when I did. The current spin set up on the F16s allows for a pretty high aspect sail. This will go to weather relatively high compared to a lot of other designs, especially in lightish air. A close reach with the spin is a great ride.

Personally I believe a Code-0 or hooter will only work well with a concave leach (arc-ed towards the luff). As it won't have enough air pressure or draft to keep open a convex leech (prevent leech fluttering).

Oversizing the foot won't help here either as then the 75% girth will become larger as well.

Only thing you can do it oversize the leech and thus shortening the foot and moving the girth measurement to lower in the sail hoping that it will make 75% ofthe (shorter) foot length there. However this will make it a very sensitive sail to sheeting changes.

In my personal opinion trying to make a true code-0 work within the 75% girth rule is a waste of money and time. For good upwind performance it will need to resemble the shape of a jib and that sail has only a 50% girth measurement. The difference between that and 75% is just to much to overcome by some trick.

Of course there is no point in throwing out most of the code-0 benefits (if any) by forcing it to adhere to the 75% rule. Will be much better to just go fully non-compliant and get a proper code-0 or just forget about the whole thing and get a flat cut assymmetric that allows you to reach if not to sail upwind.

It is better to have all of one thing then a bit of nothing of both.

Wouter

Hi all,

I can you only encourage to add such a sail to your boat. From my expierence I can tell you you will love it. I have a hooter of about 14m² (stated in the manual, but I have never measured), not very flat and certainly not applicable to the mid girth rule.
In these light wind conditions (below 8kts) you can still have fun (e.g. sailing on one hull) and you can point surprisingly high. I really run circles around the T of my friend than. As soon as the wind gets stronger, you can't point anymore, independent how flat the sail is, because the sheet loads are too high (at least for me) and the heeling moment is too strong. Hence I think the most important parameter to look for is sail area. Ones this is fixed, you can think about curvature etc.
My hooter is cross-cut from light dacron, so it keeps about the shape if you point. The sail can be trimmed by its halyard (coarse) and the main sheet (fine). Because it furles, the shape is certainly not perfect for pointing (some crinkles, if the wind is light), but trimming changes the speed by 1% and concentrating on flying one hull and sheeting by 20%.
If the wind is stronger it behaves exactly like a spinnaker, however, boats with bigger spi can sail deeper at same speed at here trim and shape seem to be more important.

In one sentance: No more boring light wind days.

Cheers,

Klaus

Agreed, code 0 seems to fit in with the Mozzie rules,

21.1 The spinnaker pole shall be attached to the centre of the main beam, and shall be fixed in a fore and aft position.

21.2 No part of the spinnaker pole or its fittings may extend more than 3030 mm from the front of the main beam. 21.3 The head of the spinnaker shall not be hoisted more than 6380 mm from the top of the main beam. 21.4 The maximum luff length shall be 6950 mm.

21.5 The maximum foot length shall be 3500 mm.

Darryn
Mozzie
1782

Agreed that extra on the leech is not desirable, but the only way you can use the benefit of a relative straight luff code zero while being f16 compliant.



Dont forget the 75% rule is relative to the foot...the longer the foot the longer the 1/2 measurement!