Lightweight Canoes
Printed From: Yachts and Yachting Online
Category: Dinghy classes
Forum Name: Dinghy development
Forum Discription: The latest moves in the dinghy market
URL: http://www.yachtsandyachting.com/forum/forum_posts.asp?TID=978
Printed Date: 14 Aug 25 at 8:34pm Software Version: Web Wiz Forums 9.665y - http://www.webwizforums.com
Topic: Lightweight Canoes
Posted By: Steve Clark
Subject: Lightweight Canoes
Date Posted: 01 Sep 05 at 6:20pm
Australians and Americans are thinking about revising the class rules for the two sail International Canoe, The AC stays as it is, but the IC minimum weight drops to 50kg ( all in) and the hull shape gets open to restricted development. Pointy sterns, 750mm min beam, 5200mm max LOA. SAil area and seat stay pretty much the same. Does thjis excite any new interest?
|
Replies:
Posted By: Cheeky
Date Posted: 01 Sep 05 at 6:36pm
Interest? I think you have plenty. But you have a hurdle. I reckon most
sailors who haven't sailed one think they can't.
|
Posted By: Isis
Date Posted: 01 Sep 05 at 11:37pm
I have been following this discussion on the canoe forums and I
definantly think this should be the way forward for the class. The AC
revolution seems to be unstopable and those of you who wish to stick to
the 2 sail format must either resign yourselves to living in the ACs
shadow or evolve.
|
Posted By: Black no sugar
Date Posted: 02 Sep 05 at 1:42am
Out of curiosity, how many people sail either type in the UK?
------------- http://www.lancingsc.org.uk/index.html - Lancing SC
|
Posted By: Blobby
Date Posted: 02 Sep 05 at 6:30am
Personally, I can't see the benefit of having different rules for the IC and AC. Yes reducing the weight and opening up the hulls to restricted development is a good idea and would make it more attractive to me, but why go to a different set of rules for one and not the other?
|
Posted By: JimC
Date Posted: 02 Sep 05 at 10:17am
Originally posted by Blobby
but why go to a different set of rules for one and not the other? |
There would presumably be no reason why the AC people couldn't adopt the more open hull rules if they wanted to, but it doesn't seem appropriate that they should have a veto on what the International Class does.
|
Posted By: Isis
Date Posted: 02 Sep 05 at 12:29pm
Again I must note that I have no involvement in the class but from what
ive picked up on the canoe sites the ACs split totaly without any
support from the IC class and there seems to be quite a bit of
bitterness because of this. There are a number of people on both sides
who want to split the class into to totaly seperate factions (as well
as a few determined to keep it united)
I am a big fan of development classes and I think the IC (but possibly
not the AC) belongs as one of these. Having said this though I dont
agree with a lot of the 'experimental' boats with racks/traps etc. The
sliding seat is part of the identity of the class and should not be
lost.
|
Posted By: Stefan Lloyd
Date Posted: 02 Sep 05 at 1:44pm
Originally posted by Steve Clark
The AC stays as it is, but the IC minimum weight drops to 50kg ( all in) and the hull shape gets open to restricted development. |
Pardon my ignorance but am I right in thinking that "AC" is the variant with the kite? If so, what is the logic behind reducing the 2-sail weight only?
|
Posted By: Scooby_simon
Date Posted: 02 Sep 05 at 2:30pm
Originally posted by Stefan Lloyd
Originally posted by Steve Clark
The AC stays as it is, but the IC minimum weight drops to 50kg ( all in) and the hull shape gets open to restricted development. |
Pardon my ignorance but am I right in thinking that "AC" is the variant with the kite? If so, what is the logic behind reducing the 2-sail weight only?
|
Maybe to feed the heavier boats into the AC fleet and then develop the IC fleet to the "new rules"
------------- Wanna learn to Ski - PM me..
|
Posted By: Steve Clark
Date Posted: 02 Sep 05 at 4:11pm
The AC (3 sail vesion) contingent has developed a formula that they regard as highly successful. They do not wish to modify it or to even receive input from the IC sailors. In fact they even have trouble accepting suggestions from AC sailors who aren't from Britian. But they are happy and having fun, so they should be allowed to continue. Great!
In the mean time there are others who maybe didn't agree that the addition of a 23m^2 spinnacher to a restricted sail area class was necessarily the appropriate way to speed up a historicly significant class, and felt that returning to something like the development formula that got us here in the first place was probably a better idea. The only really significant change in the proposal is the reduction in weight made possible by 70 years of material science since the rule was first envisioned. Other old classes, like the I-14 have made similar weight reductions.
The hope is that the ICs performance upwind will become balanced by better off wind speed and more interesting and tactical runs because the boat will be sailed at angles instead of run square. This should be an elegant sailing machine.
SHC
|
Posted By: Stefan Lloyd
Date Posted: 02 Sep 05 at 5:05pm
Originally posted by Steve Clark
Other old classes, like the I-14 have made similar weight reductions. |
Equally, the Merlins have been very cautious about it in order to avoid obsoleting the fleet, and they have been going from strength to strength in the last few years. I don't think there is one formula that works for all classes. You've really got to understand what the sailors in the class get out of it, and what kind of people are realistically likely to come into the class and what they want.
While taking a bit of weight out will certainly make the boats faster, I find it hard to believe it is likely to transform downwind tactics. There again, I've never sailed an IC.
To answer your question: would it attract me to the class? No, it would probably put me off, because I'd want to start in a 2nd-hand boat to get a feel for the class, but those would now be totally outclassed by newer lighter boats.
|
Posted By: Guest
Date Posted: 02 Sep 05 at 5:27pm
Shame to hear that the IC & AC sailors can't work together ...
Peoples loyalty to a class is worse than religion ...
I'd agree with Stefan; dropping the weight by such a large % will make those entering the class in 2nd hand boats even less competitive; and as such would put me off ...
Rick
-------------
|
Posted By: Chris Noble
Date Posted: 02 Sep 05 at 6:06pm
you could run a sort of internal handicap system that all development classes run to make older boats still potentially competitive...
------------- http://www.noblemarine.co.uk/home.php3?affid=561 - Competitive Boat Insurance From Noble Marine
FOR SALE:
I14 2 Masts 2 poles 3 Booms, Foils Kites/Mains/Jibs too many to list.
|
Posted By: Guests
Date Posted: 03 Sep 05 at 5:57pm
Hi guys Not being a canoe sailor i was unaware of the rift between the conventional and the kite guys. I very much like to see development in all classes and i think its great how sailing has evolved within each class over the years. I thought it was great when the canoe opted to have a kite and i also like the boat just as much without it. However maybe this is where the problem emerges, maybe the devolpments are too fast. A 20 kilo drop is a huge amount of weight reduction in one go much like adding the size of kite they did (sorry im not aware of the actual size, looks pretty big tho). I wonder if the people in the class who suggested the weight drop are worried about the class fading in popularity against boats like the int. moth now with hydro's. If this is the case then i think its maybe unwarrented. Ok yes there are boats that seem to be developing quickly but then look at how many years classes like the moth and int 14 and cherub play with the ideas before really making anything of them. Im very much for an overall weight reduction that is being presented but spread it out over the years, make the boats gradually lighter. And to all the Kite guys and conventional guys, stick together! you've got an amazing boat on ur hands but not sticking together is much more likely to put people off the boat than anything else!
|
Posted By: Steve Clark
Date Posted: 04 Sep 05 at 2:36pm
Working at staying together. Many successful marriages require separate bedrooms, particularly for older couples!
SHC
|
Posted By: Chris Noble
Date Posted: 04 Sep 05 at 7:50pm
good example
------------- http://www.noblemarine.co.uk/home.php3?affid=561 - Competitive Boat Insurance From Noble Marine
FOR SALE:
I14 2 Masts 2 poles 3 Booms, Foils Kites/Mains/Jibs too many to list.
|
Posted By: Doug Lord
Date Posted: 05 Sep 05 at 6:49pm
The "Australian and American" proposal also includes wording that -apparently- allows a rudder t-foil (like the 14) but prohibits full flying foils. It seems to me that while the lightening up proposal is a great idea it seems premature to me to ban full flying hydrofoils especially when the numbers show the potential of the lighter boat foiling is greater than the Moth on foils.Perhaps there could be a vote on foils after, say, a year or two trial period on a couple of new boats? What do the rest of you think?
|
Posted By: Stefan Lloyd
Date Posted: 05 Sep 05 at 7:45pm
Originally posted by Doug Lord
What do the rest of you think? |
I think this board has a very different atmosphere to Sailing Anarchy and I'd rather keep it that way. Anyone who has followed SA will understand what I mean. You have already posted at length on this subject in Steve's thread there and the debate has descending to the usual "yah-boo" mudslinging. While you personally seem quite civil, hijacking other people's threads to ride personal hobby-horses - in your case foils - invites this kind of response. Please don't start it here.
|
Posted By: Doug Lord
Date Posted: 05 Sep 05 at 7:59pm
Actually, while I like foils I have been interested in the IC for over thirty years and love the class. Mr. Clark has posted his proposal-to one degree or another- on SA, boatdesign.net, the IC forum and this forum. Since he did not mention the rudder t-foil -and attendent restrictions- part of the proposal on any opening post and only in his second post on SA I thought it was -and is -an important question.
If it is hijacking a thread to raise an important and somehow overlooked part of a major class rule change then so be it. I don't think it is because I'm trying hard to understand the thinking on this proposal and I believe that the thread cannot be properly understood without the knowledge of what ELSE is on the table in this "Australian and American" draft rule change.
|
Posted By: Isis
Date Posted: 05 Sep 05 at 8:43pm
I personaly cant see the IC, let alone the AC fairing too well on
foils... Even if they are light enough to be flown I cant see you
getting enough fore-and-aft movement to have much effect on pitch
whilst sat on the end of the sliding seat.
Anyone who has seen the moths when they let the foil break the surface
of the water will know about the crash landings they experiance. Being
sat on the end of a plank is not somewhere id like to be when that
happens.
The canoe already has a reputation for being too hard to sail for most
people, adding foils will just discourage more people from joining the
class.
But back on topic now....
|
Posted By: Chris Noble
Date Posted: 05 Sep 05 at 8:44pm
guys, i dont think its a case of "hijacking" anyway on a forum, yeh sometimes more than one related thread pops up, but it could be from two entirley different stances, if you dont want to contribute then dont....
------------- http://www.noblemarine.co.uk/home.php3?affid=561 - Competitive Boat Insurance From Noble Marine
FOR SALE:
I14 2 Masts 2 poles 3 Booms, Foils Kites/Mains/Jibs too many to list.
|
Posted By: Steve Clark
Date Posted: 05 Sep 05 at 9:34pm
It's a legitimate question to ask whether or not there will be proscriptions against Hydrofoils.
In the 4 international classes in which I am active , there is one( A Cat) that bans hydrofoils outright; one ( I-14) that limits their total surface area; one (IC) that prescribes that the daggerboard be capable of being withdrawn so as to not project below the hull; and one ( C Cat) that makes no procription except that foils must not stick out beyond the max beam.
So there seems like quite a range of options. Only recently have Canoes started experimenting with rudder foils, and results have been pretty mixed. Both boats with the option to sail with rudder foils at this year's world championship elected to use conventional rudders. Both were nicely done by front teir competitors (Ellis and Virtue), so it has to be admitted that what works in one class doesn't necessarily work in another or that it takes more than one shot at it to get it right. My own impression is that the IC suffers from a low Sail Area/ Wetted Area Ratio, and and functionally doubling the rudder area is hard to pay for with reduced wave drag on a boat that has very little wave drag to start with.
There has been discussion of hydrofoils in the class, and most feel they would not be successful at the current class minimum weight. Some feel that a fully foiling IC would be extrordinarily difficult to manage, stating that they find the boat hard enough to sail as it is and feeling that going full foiling will intimidate more sailors than it attacts. The cost of foiling systems is also seen as a major problem. So, those of us responsible for trying to draft new rules which offer a significant advance in performance without adding greatly to the cost of the boat or making it an order of magnitude more complex or difficult to sail, elected to put a single horizontal limit in place, and to extend the rule that requires the withdrawal of the daggerboard to be extended to the rudder as well. This is a practicality and safety issue that insists that the boats remain trolly worthy and don't require being cpasized at the end of the ramp before sailing away.
This is a median position. It may be a shame that we do not feel it is appropriate at this time to allow for full foiling ICs in the new rule, but that is what we feel is most acceptable to the class at large. I can appreciate Mr Lord's enthusiasm for hydrofoil sailing, but he isn't a Canoe sailor or a Canoe owner and doesn't have any stake in the future of the Canoe class. I am in the exact opposite position, having competed internationally in the class for 27 years, built over 50 canoes, and organized two World Championships.
Now, I am confident that once the dust settles and we are sailing lighter boats, some of our intrepid members will put hydrofoils under the IC and will see what happens. At that point we certainly can review our position and take action if necessary.
I hope this answers the question of hydrofoils civily and completely. I hope the answer and rationale is acceptable to all.
SHC
|
Posted By: Doug Lord
Date Posted: 06 Sep 05 at 12:16am
Great response Steve; thanks. Would it be possible to allow foils by not banning them as long as they meet the criteria of not sticking below the hull when retracted and for a finite time like two years to give enough time to evaluate whether or not they're good for the class-and then vote up or down?
Maybe foilers during this period could race with other boats on some sort of handicap basis?
|
Posted By: JimC
Date Posted: 06 Sep 05 at 12:45pm
It will be - as ever - down to what the folks with boats and votes want to vote for. If 500 foiler enthusiasts round the world were to build ICs over the next three months, get them measured and registered and join the association doubtless it could have an effect on what the voting passes!
In my experience the best way of getting a new concept that requires a rule change in a box rule class is to for some one who is a member of that class and participating widely to modify a boat with the experiment and let folks sail it. Then if it gains wide acceptance it will go through sooner or later, if not then it won't.
|
Posted By: Chris Noble
Date Posted: 06 Sep 05 at 5:09pm
Prime example being the Moth there
------------- http://www.noblemarine.co.uk/home.php3?affid=561 - Competitive Boat Insurance From Noble Marine
FOR SALE:
I14 2 Masts 2 poles 3 Booms, Foils Kites/Mains/Jibs too many to list.
|
Posted By: 2wiresorseat
Date Posted: 15 Sep 05 at 6:03pm
Is a super skinny, lightweight, moth hull harder to sail with foils
than without? Is it just the foil that makes it so difficult or is it
the tiny hull?
|
Posted By: Chris Noble
Date Posted: 15 Sep 05 at 7:28pm
the lowriders are much harder to sail than a foiling moth, as its supposed to be fairly easy to learn once you know how to sail an ordinary moth, however if you cant sail an ordinary moth, then good luck to you trying a foiling moth first time out.
------------- http://www.noblemarine.co.uk/home.php3?affid=561 - Competitive Boat Insurance From Noble Marine
FOR SALE:
I14 2 Masts 2 poles 3 Booms, Foils Kites/Mains/Jibs too many to list.
|
Posted By: JimC
Date Posted: 15 Sep 05 at 7:36pm
Originally posted by 2wiresorseat
Is a super skinny, lightweight, moth hull harder to sail with foils than without? Is it just the foil that makes it so difficult or is it the tiny hull?
|
I don't sail a Moth, but I know lots of the guys. Its a bit difficult to tell, because unless you can sail a lowrider to a reasonable standard you'll never get up on foils... The typical foiler Moth is not supposed to be the most difficult Moth of all time to sail. Some find that when they have a lowrider sussed they can manage a foiler without too much extra hassle, and find the boat easier up on the foils. Others have more trouble. Wind conditions make a huge difference, shifty and gusty is loads trouble from what I hear.
|
Posted By: Doug Lord
Date Posted: 15 Sep 05 at 7:43pm
I haven't sailed a Moth but I have sailed my own 16' foiler with about the same beam to length ratio as an IC and 80% more SA. It doesn't work right yet and as a singlehander is a handfull.I believe that when some of the nit picking problems are corrected it will be a piece of cake for any competent sailor. That's my assesment based on no previous monofoiler experience and about an hours time on a Rave foiler.
The url below is very interesting reading from a guy who just took up Moth sailing after a seven year absence from any high performance boat sailing. One sentence of his ,here paraphrased, is that
sailing a Moth lowrider is hard and sailing a Moth foiler is "#$%$ing hard". That sentiment seems to be shared by a number of Moth sailors. I've talked to a couple of guys deeply involved in Moth foiling who say that while it is very difficult to learn to sail a low rider Moth the
transition to foiling is a piece of cake. So there are different opinions about the subject in different parts of the world.
Take the time to read the folowing article-it is very well done:
http://culnane.navidat.com/dc/moth/frame.jsp?url=/dc/moth/pr j/DiamondFoil/index.jsp
|
|