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Re: Leeboards


 

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Andrew:

??? It was my intent to simply drop this, as my poor communication skills seem to have created some ill will here.?? I don't recall suggesting that you had sold your boat or sold it because of the AV panel issue, and reading back over my sent posts, I don't see anything to that effect.??? Where that came from I don't know, nor did I make any suggestion (as you kindly pointed out), that Bernd had sold Pelican for that reason.

??? I did........ and shouldn't have suggested that I suspected that it was at least part of why Pete is selling Oryx, but also that losing Carly off South Africa from Oryx, left it a boat full of memories, and that Pete likes to build boats.? He built Badger, and I think China Moon, and of course Oryx.? What is clear from the three different biplane rigs he has had on Oryx, is that he is not entirely satisfied with the performance of that boat as he built it.??

??? Again, the key is probably in the sharp corner which Bernd emphasizes in his writing about the AV panels where he speaks of adding material AFTER sanding so that he can get rid of the small radius that naturally occurs.??? I haven't seen the plans, but from what you wrote it sounds like this is not emphasized enough, and should probably be an addendum........ assuming it is the cause of your problem with leeway &c.??

??? To me the KD 860 and it's stretched cousins (of which there at least two I know of), is the outstanding design of cats in that size range? for a number of reasons.? An innovative design where the right design choices were made for the right reasons.?? Weather or not the AV panels work as they are supposed to would not change that a lot for me.??

??? Resolving the issue would AV panel issue is important, not because it is a make or break feature, but because innovative technology like this often ends up in the dustbin of history because "it doesn't work", when in fact it actually does work...... at least on Pellican, and presumably on some KD 860's.? If the difference between success and failure of these rests on a small radius left from sanding, then that is something relatively easily corrected during construction, and not so difficult even after the boat has been in the water.?? I would love to see this feature copied...... successfully, by other designers.?

???? The luffboard system as Bernd designed it, offers an excellent retrofit with minimal impact on anything, with the advantage of folding back if it strikes something...... like a centerboard.? It also doesn't require a case built into the interior of the hull like a centerboard or dagger board, or reduce draft like an LAR keel.? If I were building a KD 860, I'd probably incorporate these from the outset, as there are probably circumstances even with the AV panels working, where they would be beneficial.

??? The truth is, that I don't intend to build an 860, or any other cruising boat.? Having built boats before (smaller), I have a good idea of how much work is involved and how much time......... and cost, and at 62, I want to spend my time sailing, not building while I have my health.??? I would love to own one though, but I doubt I will find one in a price range I can afford without breaking my cruising budget, and it remains at the very top of my list of Cats I'd like to own.

??? I apologize again for creating ill will and misunderstanding....... it was not my intent.

??? ??? ??? ??? ??? ??? ??? ??? ??? ??? ??? ??? ??? ??? ??? ??? ??? ??? ??? ??? ??? ??? ??? Howard

On 12/03/2017 04:59 PM, andrewklees@... [k-designs] wrote:

?

Hi Bernd.
Just to clarify. HW implied that I sold my boat (which I have not) because of the AV panels, not your boat! He also implied that is the reason that Pete Hill has his boat for sale.
The rig on my boat is the bigger rig as per the plans. There is nothing in my plans that suggests that the AV panels neaded to be in a different postion when useing the large rig.
MY mainsail is very conservative and is about 30m2 as oposed the 36m2 on the plans and has 3 reef points of 20% of luff lenght each. The jib is 14m2 same size as plans. I also have a smaller jib of about 10m2 for high winds.
I sailed the boat for about 6 months with the AV panels, and not just day sailed, went sailing for weeks at a time. I used every sail combination eg. full main and big jib, full main little jib, 1st reef in main with both jib combinations, 2nd reef and small jib, main only, jib only. Made virtualy no difference to leeway and weather helm. At this stage I was satisfied that there was no glimer of hope with the AV panels and I had to find another solution.
Going for a single dagger board was the solution that suited me best not the only solution.
After installing the daggerboard, it was like sailing a different boat. The helm is neutral all the time and you can let go of the tiller and nothing happens. Upwind performance is as good or better than most other cruising boats, which is good enough for me. Boat tacks buitifully and very occasionally gets stuck in irons which is always my fault not the boats ( tired or distracted). Motoring in windy conditions and or tight turning is a massive improvement.
Interestingly sail combination makes no difference to the helm balance or leeway at all with the dagger board. I can sail on the wind ( may be 50deg) with the code 0 (40+ M2 SAIL) and full main with a totaly neutral helm and 13+ kn boat speed.
In short the boat whent from one that could not sail itself out of a wet paper bag, to a greet little sailer after a relatively small modification.

Having to install a daggerboard was not a disapointment at all for me, and I thoroughly enjoyed the exercise and learnt a lot. I am also glad that I gave the Av panels a go.
I agree that the theory for the AV panels is sound and would have like to have continued to experiment with them, but just wanted to get some quality sailing in. Also around this time I unexpectedly became a parent, and therefore time and funds became limited.
I certainly don't mean any disrespect, my experience with the AV is definately not a decisive test. All I can say to others is the AV panels are easy to build and also easy to cut off, so give them a try and tell us how you fair. In relation to the exercise of building a boat, the AV panel issue is a fairly trivial one.
Cheers.......Andrew.


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