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English / Scottish 20footer all carbon #164992
01/14/09 04:44 PM
01/14/09 04:44 PM
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waynemarlow Offline OP
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Some time ago I had a link to a ( I think ) Scottish built 20ft catamaran, all carbon and with some novel ideas on snuffers etc, can anyone point me in the general direction as I had a computer failure which lost my list of favourite sites

Thanks

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Re: English / Scottish 20footer all carbon [Re: waynemarlow] #164993
01/14/09 04:47 PM
01/14/09 04:47 PM
Joined: Sep 2004
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+31NL
Tony_F18 Offline
Carpal Tunnel
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Carpal Tunnel

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Re: English / Scottish 20footer all carbon [Re: Tony_F18] #165009
01/14/09 07:37 PM
01/14/09 07:37 PM

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how does it perform?

Re: English / Scottish 20footer all carbon [Re: ] #165012
01/14/09 08:27 PM
01/14/09 08:27 PM
Joined: Feb 2004
Posts: 3,528
Looking for a Job, I got credi...
scooby_simon Offline
Hull Flying, Snow Sliding....
scooby_simon  Offline
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Built in the SE of England; currently "living" at Weston.

There have been a few problems with it and the rig still needs really sorting out; it has potential, but needs a good rig (and it is difficult to beat the developement of the Tornado rig) and so it's still "work it progress".

It LOOKS feckin fantastic up close as it is all carbon!


F16 - GBR 553 - SOLD

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Re: English / Scottish 20footer all carbon [Re: scooby_simon] #165023
01/15/09 12:38 AM
01/15/09 12:38 AM
Joined: Oct 2005
Posts: 951
Brisbane, Queensland, Australi...
ncik Offline
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I see they are offering an option without the integral chute/pod. Anyone got the low-down on that?


Re: English / Scottish 20footer all carbon [Re: ncik] #165025
01/15/09 01:45 AM
01/15/09 01:45 AM
Joined: Jul 2004
Posts: 2,718
St Petersburg FL
Robi Offline
Carpal Tunnel
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St Petersburg FL
I see NO spin pole! Freaking radical.

Re: English / Scottish 20footer all carbon [Re: Robi] #165028
01/15/09 02:47 AM
01/15/09 02:47 AM
Joined: Sep 2007
Posts: 571
Hamburg
Smiths_Cat Offline
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Apart from a aesthetic point of view, why not havinga spin-pole? If I am right teh Shadow has no spin-pole as well.

It looks like a reefable main. On a high performance cat, that is something unusual.

Does anybody knows something about the price? With the current Euro-GBP exchange rate it could be tempting.

Cheers,

Klaus

Re: English / Scottish 20footer all carbon [Re: Smiths_Cat] #165030
01/15/09 03:10 AM
01/15/09 03:10 AM
Joined: Jun 2001
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Australia
macca Offline
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The no pole thing isn't what I would call a success...

other than that its a nice concept but it for sure needs a lot of development


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Re: English / Scottish 20footer all carbon [Re: macca] #165037
01/15/09 09:21 AM
01/15/09 09:21 AM
Joined: Feb 2004
Posts: 3,528
Looking for a Job, I got credi...
scooby_simon Offline
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Originally Posted by macca
The no pole thing isn't what I would call a success...

other than that its a nice concept but it for sure needs a lot of development


Yep; it now has a pole......


F16 - GBR 553 - SOLD

I also talk sport here
Re: English / Scottish 20footer all carbon [Re: waynemarlow] #165049
01/15/09 12:47 PM
01/15/09 12:47 PM
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Tek Kat Offline
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Tek Kat Update
Currently working on removing the chute to save money and improve on the current weight , we have 30kg of carbon in the chute as its structural ,the forstay is attached.

The current Rig has worked well last year but the sail plan can always have further improvements.We will be testing the new
Rig set up soon, it will basically be a soft chute with a pole as a standard F18.

Hope to see you on the water Tek Kat ltd have agreed to run the FAST CAT RACE Round the IOW again this year on 29th 30th 31st May 2009 A bigger and better Event with a Cat Open as well
So if your up for a challenge lets see if any one can take on the Tek Kat this year.

Happy to answer any question
Have a look on the site for news www.tek-kat.co.uk

Re: English / Scottish 20footer all carbon [Re: Tek Kat] #165053
01/15/09 01:23 PM
01/15/09 01:23 PM
Joined: May 2006
Posts: 954
Mumbles Y.C Wales U.K
Mark P Offline
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Mumbles Y.C Wales U.K
Hi Tek Kat
Looking at the above photo the hull has the least amount of rocker I have seen on a 'small' Cat. Do/did you notice a considerable difference with this rockerless design? Or does this boat react so totally differently to a F20/Tornado that it is hard to tell! Hypothetically if you were to re-design the hulls would you increase the rocker or not.
P.S I hope you have a very successful 09 season.


MP*MULTIHULLS
Re: English / Scottish 20footer all carbon [Re: Mark P] #165086
01/15/09 09:24 PM
01/15/09 09:24 PM
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Posts: 951
Brisbane, Queensland, Australi...
ncik Offline
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Could more weight be taken out of the hulls because of the non-existent bridle loads and compensate for the pod weight? I guess 30kg is a lot to take out though...

Re: English / Scottish 20footer all carbon [Re: Mark P] #165087
01/15/09 09:26 PM
01/15/09 09:26 PM
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Posts: 208
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DHO Offline
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What does rocker do for you besides making the boat turn easier?

Re: English / Scottish 20footer all carbon [Re: DHO] #165096
01/15/09 10:23 PM
01/15/09 10:23 PM
Joined: Apr 2002
Posts: 695
Ft. Pierce, Fl. USA
Seeker Offline
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Ft. Pierce, Fl. USA
I am very interested in your comments about the minimal rocker as well...except for smoothly releasing the energy expended from moving a volume of water equal to the weight of the displacement of the boat, and tacking ease, it has always seemed to me that the amount bottom rocker of modern cats have possibly been one of the main factors holding back cat performance from moving forward appreciably.

Regards,
Bob

Re: English / Scottish 20footer all carbon [Re: DHO] #165114
01/16/09 03:07 AM
01/16/09 03:07 AM
Joined: May 2006
Posts: 954
Mumbles Y.C Wales U.K
Mark P Offline
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The more the rocker, the more the hulls can pitch up and down as the bows and stern are like the ends of a see-saw. The more you pitch the slower you go. However, in light winds a bit of rocker can help reduce wetted hull area/drag.
Getting the right amount of rocker for the conditions you are most likely to sail in is therefore key to speed.


MP*MULTIHULLS
Re: English / Scottish 20footer all carbon [Re: Mark P] #165132
01/16/09 10:39 AM
01/16/09 10:39 AM
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Tek Kat Offline
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On the rocker issue we currently believe that the less you have the faster you go but you need some lenght in the hull to achieve this, so as the Tek Kat is 23 foot giving great upwind performance plus adding more depth in the hull this gives bouyancy and and freeboard for bigger waves. On the downwind performance less weight and flat hull will alway be fast.

Currently the A Class is leading the way for hull design but they are missing the most exciting part of sailing the Aysmetic
so a mix of hull design is the way forward, Tek Kat have little rocker achieving ease in the tack plus waterline lenght for upwind performance also bouyancy and deeper stern to push it to the max downwind.


Re: English / Scottish 20footer all carbon [Re: Tek Kat] #165195
01/17/09 08:19 AM
01/17/09 08:19 AM
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waynemarlow Offline OP
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I'm quite interested in your experiment with the central pod, it does clean up the foward area of the hulls to allow minimal windage and clean areas around the front of the hulls ( wires etc ) to recover the chute. It also allows the foward part of the hulls to be much lighter in construction ( less weight in the very end points means a much more balanced platform ).

My question to Tek Kat is what on the water benefits / non benefits have you found from actual testing between the two types.

Thanks and nice design.

Re: English / Scottish 20footer all carbon [Re: waynemarlow] #165224
01/17/09 05:26 PM
01/17/09 05:26 PM
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Tek Kat Offline
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On the issue of not having a bridle as standard cats the advantage has been been very little in practical terms, it has given the boat a unique feature, because you need a chute for the Aystemic it gives it function unlike the tornado that is simply the carbon chute made as light as possible.
The hulls being made from carbon skins on nomex core gives me plenty of room to add volume in the hulls with little weight penalty.


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