Zoom Zoom - a scientific approach?

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jg01
jg01
VIC
38 posts
VIC, 38 posts
25 Jul 2010 2:17pm
Interesting flat water board from Morrelli and Melvin. Check out the upside down nose at 39 seconds.

These designs remind me of the work a particular Victorian bush mechanic has already built!

Design Notes

The next generation in SUP race board design. The hull shape is optimized for speed. Featuring a unique bow design that penetrates through waves allowing the board to drive and accelerate without pitching the bow and losing forward energy. The peaked deck design functions to shed water for smooth recovery. The tail shape is carved down to minimize wetted surface area in order to avoid excess drag and to increase speed. Available in sizes 12'6 and 14'0




World renowned multi-hull sailboat designers Morrelli and Melvin have stepped into the world of SUP race board design. Utilizing their many years of experience designing record breaking multi-hulls, they are now applying their expertise to a new line of science based race boards that they are building with Boardworks, unlike any other race board design

www.morrellimelvin.com/

boardworkssurf.com/

DavidJohn
DavidJohn
VIC
17570 posts
VIC, 17570 posts
25 Jul 2010 3:25pm
Great vid and great looking board.. Good for flat water but not for DW'ers.. It looks very flat.. Even my Javelin seems to have a bit more rocker than it.

I'm no expert but I'd like to see a better release of water from the tail.. It looks like it drags a little.. I think that's the hard part in design.. I'm also not sure about the foot wells.. Not that you need to move your feet that much it's just nice to know that you can if you want to.. I wonder if water will drain from them or will it feel like you're standing in puddles?

I'd love to try it and see how it compares to my Naish Javelin.. I'd also love to have seen what happened to that lady in the yellow shorts..

Thanks for posting the vid.

DJ

laceys lane
laceys lane
QLD
19804 posts
QLD, 19804 posts
25 Jul 2010 5:15pm
and you can buy my 14dc fw board with the same approach for $1400. mine has a further forward standing centre, and looks to a cleaner water exit. dj, the jav and fw dc have about the same speed. the jav has a bit more glide, but the dc fw has a bit more rocker and can be used for SOFTCORE(as hilly like to see qld'ers) dw runs
cheers
jg01
jg01
VIC
38 posts
VIC, 38 posts
26 Jul 2010 9:50am
The tail design is definitely different. With their boat building back ground, I’m sure their would be some explanation as to why they have such a thing tail.

The water release looks like it is making a mini rooster tail. Is that good or bad?
CMC
CMC
QLD
3954 posts
CMC CMC
QLD, 3954 posts
26 Jul 2010 10:00am
IMO, the board in the vid looks like a 12'6 and the bloke paddling it is far too heavy for the board.

It looks like it slice through the water well for a board that is being submerged. I'd like to see it with someone the right size on it or vid of the 14'.

It looks like a similar concept to Laceys board and that is the fastest thing I have seen. Well worth the $1400 if you're into paddling real quick in flat water...... Or softcore DW.
DavidJohn
DavidJohn
VIC
17570 posts
VIC, 17570 posts
26 Jul 2010 10:16am
CMC said...

IMO, the board in the vid looks like a 12'6 and the bloke paddling it is far too heavy for the board.

It looks like it slice through the water well for a board that is being submerged. I'd like to see it with someone the right size on it or vid of the 14'.



I agree.. It looks a bit like the tail is dragging a bit or he needs to move a bit more up the board slightly which is hard to do with those tight foot wells.. and I don't think a rooster tail is a good thing..

The good thing about the Javelin is that it's such a meaty board so it can be used for such a big range of people from 50kg to 150kg without a problem.

I spent a lot of time testing and helping develop speed and slalom windsurfing boards and was told how important the tail release is and how hard it is to get it right.

DJ

CMC
CMC
QLD
3954 posts
CMC CMC
QLD, 3954 posts
26 Jul 2010 10:24am
That's what Lacey and I also observe about Dales Boards, there is always just a very neat V that trails away cleanly from the tail. There is science in parting of the water from the nose also but that's always going to depend upon the rocker along with the displacement and how it all relates to where the water meets the hull.

The dirtier the water from the tail the more friction. I don't reckon the bloke in this vid could move forward or the nose would be completely under water. It's kind of a bad vid to show how a board would work I reckon.

It is super exciting to have guys like that designing boards though. I have seen some software for designing hulls and they calculate everything from drag, dispkacement and floatation. It's why I think that argument with the 12'6 class is kind of silly. Is it really impossible to design a hull with the technology available that can move as quickly for a big strong bloke than a smaller volume one for a wirey fella?
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