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06-01-2011, 08:12 PM
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#21
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Registered User
Location: West Coast of Norway
Occupation: naval architect
Interests: surface piercing props, stepped hulls, air entrapment hulls
Boat name: none
Boat make: PetterTintorera
Engines: Yamaha 90
Cruising area: West Coast of Norway
Join Date: Sep 2005
Location: West Coast of Norway
Posts: 887
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Quote:
Originally Posted by Adam
a couple more photos from yesterday
all coming along very well, deck plans, arrangements, tanks etc all under way too.
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Looks very good. Cant wait too se the rest of the design.
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06-01-2011, 08:13 PM
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#22
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Registered User
Location: West Coast of Norway
Occupation: naval architect
Interests: surface piercing props, stepped hulls, air entrapment hulls
Boat name: none
Boat make: PetterTintorera
Engines: Yamaha 90
Cruising area: West Coast of Norway
Join Date: Sep 2005
Location: West Coast of Norway
Posts: 887
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Quote:
Originally Posted by Techteam
Adam
If you mail me a .stl file I'll do you a 3d print.
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How large can you go with the 3D printer?
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06-01-2011, 08:37 PM
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#23
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member
Join Date: Apr 2004
Posts: 1,036
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Quote:
Originally Posted by Adam
That would go down well!
I've got a 150 E-Tec HO as well ....
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Well I'm sure as an invite or guest appearance it would look good alongside the current approved rage, great for testing, who knows if production = 3 or more built
Great job Adam
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06-01-2011, 09:05 PM
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#24
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Registered User
Country: UK
Location: Windermere
Join Date: Oct 2005
Location: Windermere
Posts: 559
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Quote:
Originally Posted by Scand
How large can you go with the 3D printer?
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X 298mm
Y 185mm
Z 203mm
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07-01-2011, 08:09 PM
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#25
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Registered User
Country: Sweden
Location: Österskär
Occupation: Adman
Interests: Boats, design, advertising, music, movies, boats, boats, boats ;-)
Boat name: Speedy Canoe
Boat make: Aero 21
Engines: Mariner 150
Cruising area: Stockholm archipelago
Join Date: Oct 2007
Location: Österskär
Posts: 131
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I'm in love with this boat so far. Think it looks great!!!
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20-01-2011, 08:31 AM
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#26
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Senior Member
Country: England
Location: Warsash
Occupation: Boat Designer
Interests: sport
Boat name: Santana
Join Date: Mar 2004
Location: Warsash
Posts: 1,836
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Hull now in primer and will soon be ready for the hull mould to be taken off.
Otherwsie much going on with detail design of the deck, structures and fittings.
Also really pleased to say that the first boat has been sold - and will be going abroad.
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20-01-2011, 11:48 AM
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#27
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Registered User
Country: Sweden
Location: Österskär
Occupation: Adman
Interests: Boats, design, advertising, music, movies, boats, boats, boats ;-)
Boat name: Speedy Canoe
Boat make: Aero 21
Engines: Mariner 150
Cruising area: Stockholm archipelago
Join Date: Oct 2007
Location: Österskär
Posts: 131
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Quote:
Originally Posted by Adam
Hull now in primer and will soon be ready for the hull mould to be taken off.
Otherwsie much going on with detail design of the deck, structures and fittings.
Also really pleased to say that the first boat has been sold - and will be going abroad.
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Looks great, and great news. I think I know who it is
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22-01-2011, 09:37 AM
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#28
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Registered User
Country: england
Location: southampton
Occupation: engineer
Interests: lots
Boat make: scorpion 8.1
Engines: 250HO
Cruising area: solent
Join Date: Mar 2004
Location: southampton
Posts: 1,350
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Adam
Whats the advantage of the double chine?
Quote:
Originally Posted by Adam
Just to give a few overall details:
Length overall is 6.66m (21' 10")
Length UIM measured is 6.50m (21' 4")
Beam overall (incl wings) is 2.20m (7' 3")
Hull form is triple ventilated steps with a double chine.
Laminate schedules will be either a light weight lay-up or a very light weight option.
Although based around racing in 3B the boat will be suitable for classes upto 150hp, including OCR etc.
Photos just show the intila hull plug construction and boats will be from full production moulds.
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23-01-2011, 04:20 PM
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#29
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Senior Member
Country: England
Location: Warsash
Occupation: Boat Designer
Interests: sport
Boat name: Santana
Join Date: Mar 2004
Location: Warsash
Posts: 1,836
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Quote:
Originally Posted by glen76
Adam
Whats the advantage of the double chine?
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There are diifferent ways of using the concept - but in this case I use it to keep a narrow running chine width (to inner chine) but with a reasonable more practical width to the outer chine.
By varying the angles and details around the chine I believe it gives me the ability to give a better handling boat and also more potential for keeping a higher average speed, better in the turns etc. In other designs I may use the concept to improve internal space (very useful on RIBs) or improve load carrying etc.
I don't use it as a feature in all designs and the gains are often small - but it can be a useful feature.
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23-01-2011, 10:51 PM
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#30
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Registered User
Join Date: Jun 2007
Posts: 90
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What is the intended powertrain for this design? Looks shallow so I assume an outboard? Why the radius on the rear gunnel's? Looks like water will want to adhere to this and add weight to the running displacement. Lastly, your dead-rise seems more of a radius rather than a linear dihedral, why?
I like the original design
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25-01-2011, 08:12 AM
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#31
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Senior Member
Country: England
Location: Warsash
Occupation: Boat Designer
Interests: sport
Boat name: Santana
Join Date: Mar 2004
Location: Warsash
Posts: 1,836
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Quote:
Originally Posted by Boatless-Again
What is the intended powertrain for this design? Looks shallow so I assume an outboard? Why the radius on the rear gunnel's? Looks like water will want to adhere to this and add weight to the running displacement. Lastly, your dead-rise seems more of a radius rather than a linear dihedral, why?
I like the original design
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Just to answer your points quickly:
- Yes, definitley for outboard power. For 3B class really looking at the 115hp engines, but for other classes a 150 would be a great option and will look at a 200hp route for race and pleasure. So much depends on where the boat is being used and type of racing.
- The radius is a mixture of strength and aerodynamics. The boat will be running too clear for water adhereing to this surface to become a problem. Again with the double chine it helps in deflecting all spray - and the height of the wing and radius section is comfortably clear of the inner chine.
- The deadrise is actually made up of three different surfaces at gradually increasing angles: pad - main deadrise - outer deadrise. This probably gives the illusion of a radius. However there is also a very small amount of offset camber added to the main deadrise section, which again adds strength and also improves efficiency a touch.
Regards
Adam
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25-01-2011, 12:09 PM
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#32
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Registered User
Country: Guernsey
Occupation: Postie
Interests: Heavy Heavy Metal
Boat name: Slayer II, Slayer, Pen15
Boat make: Phantom 19G-R, Bernico F2 Extreme, Ring 15
Engines: Evinrude 115HO, Yam 90
Cruising area: Channel Islands
Join Date: Aug 2009
Posts: 1,460
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Interesting stuff!
When you say camber, do you mean that like in the snowboarding term meaning the opposite to rocker?
Have you got any pics of the deck or renderings of the boat?
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25-01-2011, 12:26 PM
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#33
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Senior Member
Country: England
Location: Warsash
Occupation: Boat Designer
Interests: sport
Boat name: Santana
Join Date: Mar 2004
Location: Warsash
Posts: 1,836
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Yes , camber (in transverse direction) is similar to rocker actually - puts a touch of curvature into the surfaces. The amount on this hull is very small though. Many reasons for it and it is not a symetrical camber.
I had hoped to generate some 3D renderings showing the deck - but to be honest time is against me and the project is moving along very quickly. For the moment I attach a simple 2D image from a proposal drawing - giving an indication of the deck for the tandem deck. Things have changed a bit with the final hull and deck lines though!
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25-01-2011, 01:20 PM
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#34
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Registered User
Country: Guernsey
Occupation: Postie
Interests: Heavy Heavy Metal
Boat name: Slayer II, Slayer, Pen15
Boat make: Phantom 19G-R, Bernico F2 Extreme, Ring 15
Engines: Evinrude 115HO, Yam 90
Cruising area: Channel Islands
Join Date: Aug 2009
Posts: 1,460
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Quote:
Originally Posted by Adam
Yes , camber (in transverse direction) is similar to rocker actually - puts a touch of curvature into the surfaces. The amount on this hull is very small though. Many reasons for it and it is not a symetrical camber.
I had hoped to generate some 3D renderings showing the deck - but to be honest time is against me and the project is moving along very quickly. For the moment I attach a simple 2D image from a proposal drawing - giving an indication of the deck for the tandem deck. Things have changed a bit with the final hull and deck lines though!
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Thanks for that, look forward to seeing the finished product
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28-01-2011, 09:11 AM
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#35
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Senior Member
Country: England
Location: Warsash
Occupation: Boat Designer
Interests: sport
Boat name: Santana
Join Date: Mar 2004
Location: Warsash
Posts: 1,836
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Just going through the primers and any fine filling.
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28-01-2011, 02:24 PM
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#36
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Registered User
Join Date: Nov 2010
Posts: 176
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Quote:
Originally Posted by Adam
Just going through the primers and any fine filling.
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Thats looking good i will be down on friday to av a look ,going to take RODDERS out for a few beers ,may see you on sat ,
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28-01-2011, 02:40 PM
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#37
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Senior Member
Country: England
Location: Warsash
Occupation: Boat Designer
Interests: sport
Boat name: Santana
Join Date: Mar 2004
Location: Warsash
Posts: 1,836
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Sounds good - think Rod deserves a beer or two!
I should be along on Saturday - see you then
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24-02-2011, 05:41 PM
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#38
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Senior Member
Country: England
Location: Warsash
Occupation: Boat Designer
Interests: sport
Boat name: Santana
Join Date: Mar 2004
Location: Warsash
Posts: 1,836
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Photo of the hull mould now complete - with plug ready for the deck forming.
Much progress with various sub-components underway, fittings from tanks to trailers organised etc.
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24-02-2011, 05:46 PM
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#39
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Senior Member
Country: England
Location: Warsash
Occupation: Boat Designer
Interests: sport
Boat name: Santana
Join Date: Mar 2004
Location: Warsash
Posts: 1,836
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And one more - from bow looking aft. Gives an idea of the forward deadrise angles - but does not show all the hull features or the steps as the mould outer surface covers over much.
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25-02-2011, 07:32 AM
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#40
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Registered User
Country: spain
Occupation: naval architect
Interests: boats,bikes,cars
Boat name: prra
Engines: 2.0L
Join Date: Mar 2010
Posts: 13
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that is looking very good
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