3C Worlds - Sweden - Page 2

38KV · 18-08-2004, 08:10 PM

Adam, which day were you in Nynäshamn? I was there from Friday afternoon to Sunday afternoon.
Me and my buddies were invited by the organizer to show our boats.
We did a few turns in the bay at 1.30 pm Saturday afternoon.

Too bad I didnt know you were here.

Should have been fun to meet you and your crew.

Adam · 19-08-2004, 08:42 AM

What a shame - I was only there from early Thursday morning to mid-morning Friday, so only saw the second race. Had to get back home to work on my raceboat for the following weeks race.

We hired a small aluminium boat, 5.2M / 90hp, in Stockholm and took a few days to travel down to Nynashamn, stopping of at couple of the Islands in the evenings. Took a more direct route back. One of the most enjoyable boating trips I have ever done! (even if it was only at 30 mph).

Must say the amount of great boats you see in Sweden far exceeds being in the UK. Also the boats are in better condition than most of ours.

Adam · 19-08-2004, 02:50 PM

Hi Matt
Eventually got back to your post,

Tunnel sides are generally given a few degrees of release angle for the GRP boats, otherwise many of the wooden / Ali cats of previous years often did have vertical sides. The inner strake is mainly to help get the boat lifted and onto the plane where there is often a problem with the large amount of extra wetted surface area with a catamaran when at low speed.
The percentage of aerodynamic lift is a big variable and certainly at times it can be very high – and needs to be to make up for the extra weight involved in building a catamaran. Certainly 60% is possible. Generally the problem with catamarans are the legs where the lift percentage is low – i.e. downwind on a windy day.
The actual sections used are either not aerofoil or at best modified aerofoil sections. This really being due to the long chord lengths and interruptions in the profile due to cockpits, engines etc. I have certainly gone for a large aspect ratio on the tunnel for my cat as I feel this is the best way to go with a relatively big boat. At the same time this also increase the build weight itself, but does give a bit more stability (much of the time).
The wing thickness is certainly influenced by the cockpit but also the length of the tunnel, which if you are trying to get lift from the deck the shape required can result in higher decks. On top of that structural design (also building methods) can then present problems and depth is also required to gain strength efficiently.

All very interesting – and could go for ages without covering everything.

Adam

infoasitappens · 19-08-2004, 06:37 PM

Quote:

Originally posted by Johnson
Your direction change towards cats is quite noticable (ie, every pic a cat) have you completely lost interest in monos?

Adam has posted pics of cats cause thats all there was there apart from the 2 B23s from Britain and the new Ocke.

infoasitappens · 20-08-2004, 09:12 PM

CHECK OUT THE DO IT YOURSELF CRANE AT THE EVENT, WHAT COULD BE EASIER

infoasitappens · 20-08-2004, 09:22 PM

P2 IN WORLDS THOMAS ROUSEN HYDROCAT

Jon Fuller · 23-08-2004, 11:21 AM

Quote:

Originally posted by infoasitappens
P2 IN WORLDS THOMAS ROUSEN HYDROCAT

Hydrocat, or Hydrolift?

Adam · 23-08-2004, 11:22 AM

Quote:

Originally posted by Johnson
Your direction change towards cats is quite noticable (ie, every pic a cat) have you completely lost interest in monos?

Thinking about it - not really true as I'm interested in anything that is new or being developed. As 'info' posted there were not many mono's at the Worlds - but I did post photo's of new Mannerfelt.

It is why I still like the 2 litre class as there is still development. Also why the one design classes do not really do it for me. Sometimes they do give closer racing (not always though) - but very little moves forward once the class is established - and that is not what offshore racing is about to me.

Adam

Jon Fuller · 23-08-2004, 11:24 AM

Couldn't agree more! natural development needed to stay in front (or cheating lol) is how we 'better the breed', and makes things way more interesting.

Yamaha 225 · 09-09-2004, 06:42 PM

They sold the molds to Sweden. the modifyed the deck in the strern to get more vakuum and the steps and other things to make it faster. Hydrocat is therefore the swedish one and they are much better. When I was 10 years old I took my Pioner 235 with 5 hp. Tohatsu over the Oslofjord to go and visit Hydro-Design who was building Hydrolift boats. It was exciting to see the raceboats beside the production sportsboats. Hydrolift went bankrut twice and have now new owner who have started to bulid less sportier boats. What a pitty!

Paul Whittier · 25-04-2006, 06:04 AM

Do Hydrocat and Argo have websites?

Scand · 19-05-2006, 02:50 PM

Try this web site:
http://www.hydrodesign.no/ Look on that last page of the brochure
Argo web site used to be:
http://user.sgic.fi/~argo/
Hope this helps

FrenchPhil · 19-05-2006, 04:29 PM

The Argo website has been down for ages.... I'm sure they have all the work they can handle anyways.

Those Hydrocats are awesome, nice pdf.

Scand · 20-05-2006, 04:10 PM

If I had some spare cash I would get me a CT-22…
http://www.finn.no/finn/boat/object?...16&pos=1&tot=1
Nice V8 outboard….

scottyboy · 20-05-2006, 06:47 PM

Quote:

Originally posted by infoasitappens
Adam has posted pics of cats cause thats all there was there apart from the 2 B23s from Britain and the new Ocke.

So what does the new "Ocke" look like then? Anyone?