Slip along with KY Jelly

[catmandoo]

Do you think if I plastered my hulls with KY jelly boat would go faster /forums/images/graemlins/smile.gif

 

[snowleopard]

daft b****r. it's water-soluble!!!

 

[aran01]

Oh really and how do you know ? /forums/images/graemlins/ooo.gif

 

[tugboat]

Bearing in mind what it is used for, it's hardly going to be epoxy-based, is it? /forums/images/graemlins/grin.gif

 

[BobE]

No,
But in the 60's the Olympic classes, FDs in my case, looked closely at exuding something called, I think, polyetheleneoxide ( Shortened to Polyox)..
It is a long, very long, chain polymer which if exuded in light weather from the bows of the boat extended the area of laminar flow significantly... And of course at these low speeds skin friction becomes the major drag factor...I think the problem of the increased wetted area due to the weight of the polymer made the idea unfeasable! Then of course it was made up into the surface coating of the hull and as I remember that was when "exotic" materials were banned.
Sorry to be serious but I just thought you should weigh the KY first !! /forums/images/graemlins/confused.gif
Cheers Bob E...

 

[catmandoo]

To be serious too I recall some time ago someone used a double hull with the outer one full of small holes and injected air into it to reduce the coefficient of friction . Problem I suppose is how to get the air there without a compressor using the forward motion of the ship . I also read somewhere that the clinker built hulls on Viking longships trapped air in the grooves and achieved the same effect

 

[Colin_S]

I would try drilling thousands of tiny holes in the hull, seal all the doors and windows, fit a big f-off compressor on the deck piped inside the cabin and turn it on. The resulting flow of air over the hull should dramatically reduce friction and give you your desired increase in speed.

 

[aitchw]

Same effect achieved with a 'shark skin' textured hull, also banned.

 

[cameronke]

Dont they call that a hovercraft?

Regards
Cameron

 

[Rowana]

What's KentuckY jelly ?? /forums/images/graemlins/confused.gif /forums/images/graemlins/confused.gif

 

[Colin_S]

Only until you turn off the compressor - then it's a submarine......

 

[catmandoo]

Yes but what about the extra weight of the compressor and power source not to mention the wind resistance .

 

[jimi]

Why not try water repellent silicone gel to minimise friction? The top laser guys wipe the hull with soap detergent .

 

[catmandoo]

What's KentuckY jelly ??

------------------------------------------------------------------------

Cheap alternative to KY Jelly , obtained from frying pans of Kentucky fried chicken

 

[Sybarite]

Venturi slots?

 

[Goodge]

What about hydrofoils to lift boat clean out of the water, like the Moth dinghies are now doing ?

 

[catmandoo]

Solution must involve low energy input to get lift perhaps wave energy as a starter

 

[Barry777]

Will someone answer the question.....I'm also dying to know what it is. Have I led a sheltered life?

 

[BobE]

Yes It's used during what used to be my favourite occupation....Ho Hum
Cheers Bob E..

 

[BobE]

Nah.. Extra drag in light airs....Try filling your bouyancy bags with helium and just let em down before the finish!! Some of you sailors really ought to join the AYRS then you'd get the "Catalyst" journal which is interesting if you want to sail fast...
BTW Have you seenthe nice pic of E Mc with the RN on the team ellen site??
Cheers Bob E