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Author Topic: SH....SH...SHARK!!!!  (Read 6722 times)

Subculture

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Re: SH....SH...SHARK!!!!
« Reply #25 on: January 31, 2012, 06:40:43 PM »

Nick's shark 'Dennis the Menace' was featured in an article in MMI magazine some years ago. It didn't have any control over pitch, the thrusters were used to steer the thing via the gills. There was a compressed air ballast system on-board to control depth. It went very slowly anyway, so presumably static forces were adequate to keep the boat level when underway.

With the Nautilus, the problem is intensified with speed. It's the upsweep of the forward rakers that causes the down force on the hull.

How about making a hammerhead shark. If the nose is rubber, you could twist the ends like forward hydrovanes.

unbuiltnautilus

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Re: SH....SH...SHARK!!!!
« Reply #26 on: January 31, 2012, 06:47:51 PM »



How about making a hammerhead shark. If the nose is rubber, you could twist the ends like forward hydrovanes.

They're not real Sharks though, God was having an 'off day' that day surely?
Like your logic :-))
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Subculture

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Re: SH....SH...SHARK!!!!
« Reply #27 on: January 31, 2012, 08:00:39 PM »

Reckon they'd seem real enough if one was nibbling at your pinkies!

silent running556

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Re: SH....SH...SHARK!!!!
« Reply #28 on: January 31, 2012, 09:14:14 PM »

I can't remember the name of the vid but there's one of a diver with a shark that was very controlled and he had it swimming round him in circles, it wasn't doing the head banging stuff at all. i'll have a little nose about.
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Re: SH....SH...SHARK!!!!
« Reply #29 on: January 31, 2012, 09:40:50 PM »

There is this one. http://www.youtube.com/watch?v=Rfi7VIVN0dY&feature=related

Very agile and fast- fitted with rear vanes, cheating but good control. At the end of the day, a shark can bend it's body in a variety of ways that would be difficult to implement in model form.

There's a more cartoon-ish fish on this video. http://www.youtube.com/watch?v=DliEJ8AqcMY&feature=related

Just a warning to those of a sensitive disposition- there are swimmers in shot on these videos!

AL 1

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Re: SH....SH...SHARK!!!!
« Reply #30 on: January 31, 2012, 09:47:22 PM »

oh no not swimmers
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silent running556

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Re: SH....SH...SHARK!!!!
« Reply #31 on: January 31, 2012, 10:07:29 PM »

Aka the menu. O0
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Patrick Henry

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Re: SH....SH...SHARK!!!!
« Reply #32 on: January 31, 2012, 10:41:49 PM »

AKA...victims.
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glendavis1971

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Re: SH....SH...SHARK!!!!
« Reply #33 on: July 31, 2012, 09:56:51 PM »

Hi mate

Just seen your shark problems have you considered ballistics gel which is designed to mimic muscle. You make a plaster cast mould and pour stuff and wait for it to set

Glen
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Subculture

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Re: SH....SH...SHARK!!!!
« Reply #34 on: July 31, 2012, 11:31:00 PM »

I looked that up, says it based on gelatin- won't that go off over time, not to mention is it waterproof?

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Re: SH....SH...SHARK!!!!
« Reply #35 on: August 02, 2012, 03:10:46 PM »

Maybe Plastidip will work for your skin. You could spray that onto a Dacron sheet.   

http://www.caswellplating.com/restoration-aids/plasti-dip/plasti-dip-spray-white-11-oz.html
It is also available in black

Dacron is a sheet that stretches on the bias, often used in membrane roof systems.

I noted that it was suggested to use a latex coating, but these water based materials absorb water in immersion. I think the Plastidip would be better.



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unbuiltnautilus

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Re: SH....SH...SHARK!!!!
« Reply #36 on: August 04, 2012, 10:22:01 AM »

Sharks on hold over the summer, squid to be completed soon, but keep the good ideas coming, this is a bit of an 'out there' project and any input is greatly appreciated :-))
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