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Old 16 March 2005, 12:38   #61
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Quote:
Originally Posted by codprawn
How many variables can you have on a deep V hull of a certain length and beam?

Surely it is a case of someone trying to reinvent the wheel?

I would have thought that one reason for so many similar hulls is down to modern CAD programs - in a similar way so many modern cars look the same as they have been styled in the wind tunnel.
I disagree with you pretty strongly on this!

There are many variables and they need to be integrated into what is trying to be achieved with a particular design. At the same time engines, structures, tubes etc etc evolve - so this all has to be taken into account with the design process.
So no it is not trying to re-invent the wheel. Many RIBs may look similar but there can be fairly significant changes that are not obvious to all.

With regards to CAD programs they do not design the craft - it may make it easier to draw a basic hull - but if you are really designing you will be in control of the data going in and the data coming out. There is no simple way that a program that designs your boat - unless you are using existing data from a previous or stock design. The designer is still in control of interpretating all data to make sure that the craft produced is suitable for its requirements.

It is a very complex path - unless you are off course copying (re-inventing the wheel).
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Old 16 March 2005, 12:48   #62
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Quote:
Originally Posted by Adam Younger
This really sums up why the whole case of splashing is so offensive to Designers.

Adam
Adam, it's Probably a stupid question, but out of interest who do you use to mould your ribs?

And going back to the "is it or isn't it" question, surely the correct thing to do if it's proven to be a splash, is Mr Leeway publicly destroying the mould of his rib. After all, surely no self respecting ribber would be interested in buying one if it's proven to be a fraud.
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Old 16 March 2005, 14:12   #63
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Quote:
Originally Posted by Adam Younger
I disagree with you pretty strongly on this!

There are many variables and they need to be integrated into what is trying to be achieved with a particular design. At the same time engines, structures, tubes etc etc evolve - so this all has to be taken into account with the design process.
So no it is not trying to re-invent the wheel. Many RIBs may look similar but there can be fairly significant changes that are not obvious to all.

With regards to CAD programs they do not design the craft - it may make it easier to draw a basic hull - but if you are really designing you will be in control of the data going in and the data coming out. There is no simple way that a program that designs your boat - unless you are using existing data from a previous or stock design. The designer is still in control of interpretating all data to make sure that the craft produced is suitable for its requirements.

It is a very complex path - unless you are off course copying (re-inventing the wheel).

I still say that with all the designs that have gone before coming up with a truly NEW design is not easy.

Just read an article where Regal boats are being sued by someone who patented a stepped hull design in 1990 - Regal claim that by adding a few strakes and modifying the profile it is a NEW design - mmmm!!!

To take matters further stepped hulls were quite common in powerboat racing in the 30s and seemed to originate in Seaplane floats and flying boat hull - why I didn't think of it sooner when I have flown in a few seaplanes I don't know - just look at a Shorts sunderland for example!!!
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Old 16 March 2005, 14:25   #64
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whats the deadrise on a phantom?? is it a constant v?? does that info compare to leeways statistics....??
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Old 16 March 2005, 14:32   #65
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Quote:
Originally Posted by gtflash
whats the deadrise on a phantom?? is it a constant v?? does that info compare to leeways statistics....??
GT, as far as I know, Phantoms are a warped V, but Jonny will certainly know...

Can I just add that Leeway has certainly come in with a splash announcing his new RIB design!
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Old 16 March 2005, 15:13   #66
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I find myself Quite often looking at Spray rails and thinking what the Fkk am I doing in the water again!
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Old 16 March 2005, 15:30   #67
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Classic!

Quote:
Originally Posted by Rogue Wave
I find myself Quite often looking at Spray rails and thinking what the Fkk am I doing in the water again!
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Old 16 March 2005, 15:33   #68
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You can well believe that ws the biggest splash the IOW has seen for a while!
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Old 16 March 2005, 16:55   #69
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sorry i have not read all the thread as i got bored.....

take a look at this.......

it could also be a picton like this boat maybe?
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Old 16 March 2005, 17:14   #70
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can we keep this thread going as im getting lots of advitising and orders are coming in fast
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