Rhinoceros and Maxsurf for all your boat design needs. Both based on similar mathematical/modelling methods and both fairly intuitive with good help.
Rhino, from McNeel & Assoc, can be downloaded free for 25 saves or prints. Maxsurf, from Formation Design Systems, has a no save demo. Both are unlimited use otherwise.
http://www.rhino3d.com/index.htm
http://www.formsys.com/
Rather than printing from Rhino, you can save some of your 25
saves
by taking a screen shot.
I'm not trying to say anything, I'm just sayin'. . .
Well, what exactly does it mean. Sounds like you wanna say something but your scared to stand behind your words.So you want to design a Hobie 16, is that it?
There weren't anymore
failures
in the Tybee this year than any other. There was a sail failure that had nothing to do with the race or the boat.
And your right ,I have NO sense of humor, just ask anybody.
Todd
I'm not trying to say anything, I'm just sayin'. . .
It's nonsense from the
Sopranos
.
But, screw it! You wanna hear it, here it is. 500 miles is not much of a distance for a sailboat. Dozens, probably hundreds, of monohulls make journeys of many times that distance annually. There is a veritable migration of boats down the eastern seaboard each spring.
I'm not sure what the distance standard over time is but 180 miles in 24 hours rings a bell.
So one interpretation of the Tybee would be that the difficulty is an indicator of the unsuitability of the boats being used.
I'm not saying it isn't difficult or that it doesn't take a lot of skill. I am saying you're using the wrong boat. Hence the design questions.
That's what I wanted.
I don't watch alot of TV anymore. I thought it was regurgitated SA spew. I see it over there alot.My bad.
My take on the right boat for distance racing,the longer it takes the more stuff you break.You can even see this from inside the same fleet.This refers solely to racing.
Cruising a boat to the South with the snowbirds is a whole different cup of tea.With an average speed of 7.5 (the 180 in 24) I'd call that cruising or miserably slow racing. Plus it'd be awfully hard to beach land and launch a monohull. That's where stuff breaks and that's what makes the race more challenging. The point of races like the Worrell, Great Texas, and the Tybee is the fact that the boats are not decked out comfy race boats. Whether or not that makes it
suited
for the race is up to personal interpretation. Since the races were designed around using that type of boat I'd say it is .
What boat do you think would be better? A 16 is going to take considerably longer, which is harder on the boat and crew. If your designing something specifically for that, I'd combine a Nacra-20, a tiger and a Tornado.
Todd
Regarding the Tybee specifically, I think developement would benefit by an
Open Class
with few if any rules regarding design. Because you are launching through surf, the transom hung rudder needs to go away, or fit a couple of robust sweeps so the crew could power out throught the surf (think of the Australian life guard competition where they row a dory through very heavy surf).
something is wrong with my reply screen. can only write short messages.
I have to wonder what a Tornado would have done in this years Tybee with an old style, dead down wind spinnaker? In the cycle of innovation, imagine a modernized square sail, using a carbon spar and HUGE light weight sail.
Open Class
with few if any rules regarding design. Because you are launching through surf, the transom hung rudder needs to go away, or fit a couple of robust sweeps so the crew could power out throught the surf (think of the Australian life guard competition where they row a dory through very heavy surf).
One thing to be aware of is , what you start with you sail with. There is no time to switch things around. As tight as the racing is, every second you lose you will NOT get back.
How about switching a light weight, symmetrical spin for the more robust asymmetrical spin? Not allowed under class rules but allowable in an open developement class.
I know a guy with a 40' cat who launches his spin from a bag! Piece of cake if it's packed right, impossible if packed wrong. A light weight spin for a 20' cat probably would weigh only a lb.
I think a sym. would be a pig on a 20' cat.
In very light air?
But you get my point. An open class would allow the experiment.
Pete,
Maybe this has already been brought up but if not
wasn't the Worrell once run as an open event?
If so, how did that work out?
I think an open category with only a limit of hull length would be a lot of fun for people who feel the need to play around with boats.
Regards,
Phill
It was tried once , and I believe, only one boat finished.
I don't know much about the history of the event, but I agree with you. Encouraging innovation has to be good for the Tybee and sailing in general.
I KNOW there was an open development class in the Worrell 1000 at LEAST two years, and I'm remembering at least three, maybe four. It was fascinating to go to the start beach in Miami every year and look at all the weird designs. Probably still have pictures of them somewhere in my files. The one I remember best was Carl Roberts' design with VERY narrow hulls and a mast that could be canted from side to side.
It was so interesting to see the different ideas that people came up with. However, the development class also made the race more dangerous, because those far-out designs had not yet been tested in extreme conditions -- and, of course, most of them failed the test of the Worrell 1000. (That does not mean some of the innovations were not worth pursuing and perfecting.)
I have always wished that the development class could have continued. Stock boats are relatively boring, though safer. <img src="<>/tired.gif" alt="tired" title="tired" height="15" width="15" />
What evidence backs up your claim that unlimited boat development is good for the event?
Don't we already have classes with rules that allow unlimited development? Why does the Tybee need to be the same way?
The best thing that happened to the event and insured it's survival is the current format. We already have a very small pool of sailors with the desire and wherewithal to get to the line and you want to make it an arms race?
No, what I want to do is find the ignore button. . . quickly.
For the rest of you, my real interest is cruising my Tiki 21, to include the route of the Tybee, not the event itself. To that end I've added a small asymmetrical spinnaker. I had considered some changes to the bridge deck, but have decided against that, at least for now.
What the Tybee people do is up to them.
Yes, where have the ignore button gone? For all my incredible brainpower and forum experience, I can not find it anymore <img src="<>/grin.gif" alt="grin" title="grin" height="15" width="15" />
Go to the profile of the user and click on
Ignore this user.
spinnakers came apart due to some bad glue and people backed up on their rudders in the surf resulting in busted rudder parts. That can happen to any boat. The later isn't really a
boat failure
but a
technique failure
.
While my interest is in the Tiki, I'll bet there would be an interest in a small
blue water
cat. Despite Tiki's proven seaworthiness, Wharram decries it's use off shore and terms it a
coastal trek
design.
Came across this awesome piece of free software:
http://www.delftship.net/delftship/...
DELFTship™Free is a fully functional 3D hullform modeling program perfectly suited for students, home users or anyone else with an interest in ship design. And as the name already implies it's completly free of charge! DELFTship™ uses subdivision surfaces to represent the 3D geometry instead of conventional nurbs. This technique allows for rapidly modeling the most complex shapes in a very flexible way.
I havent installed it yet but it looks really good.
Thats what I used to make that rendering earlier.
And modesty! don't forget your incredible modesty! <img src="<>/smile.gif" alt="smile" title="smile" height="15" width="15" />
Hey, a geek thread, finally !
Pete, if you want to get some amateur or proffessional designing you only need to look into Rhino3D and nothing else (www.rhino3d.com). It is cheap for students and educators, and you can try for unlimited time the Macintosh version, which is still in developement but ok for learning. For some specific marine design calculations Rhino has a plugin called RhinoMarine, but you don't really need it for start. Rhino is extremely precise, fast, easy to learn and well structured, well put together help file and tutorials, very good customer support. It is the best software for designing stuff and very versatile with lots of plugins and very powerfull modelling tools. The basic 2D drawing is really easy to use and easy to learn, while 3d modelling is a brease compared to stuff like Blender, Autocad, 3DSMAX, Maya, and many others. Rhino's layout is intuitive , uncluttered, has command text entry and does not overwhelm the user with a
professional
looking interface that is normally hard to use because it is made by nerds for other nerds, Rhino is designed by coders for students, artists, engineers and normal ppl, not just for computer nerds like other software.
If you need a demonstration just drop by whenever you want and I will provide cold beer and Rhino lessons. And you can also do stuff like this :
http:/
Fortunatelly for me I come from a geek world, that's usefull if you have to work with pc's a lot. Regarding AV's one of the best piece of software for home use is AVAST (www.avast.com free license for home use). AVAST uses less resources , that means it won't slow your pc down as others will, it is updated periodically and very reliable. Another extremely good AV is Kaspersky, but it is too much for home use, I have a friend working for Kaspersky and they recommend AVAST for home use...
Just my 2c
Regards,
Some general questions:
Let's assume I'm trying to get some weight off my Tiki 21 and improve performance at the same time.
What problems are generated by lashing two canoe type hulls together at the gun'l? The idea being to keep trailering width down to the legal max.