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Old 06-01-2011, 08:12 PM   #21
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Quote:
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a couple more photos from yesterday

all coming along very well, deck plans, arrangements, tanks etc all under way too.
Looks very good. Cant wait too se the rest of the design.
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Old 06-01-2011, 08:13 PM   #22
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Adam

If you mail me a .stl file I'll do you a 3d print.
How large can you go with the 3D printer?
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Old 06-01-2011, 08:37 PM   #23
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That would go down well!

I've got a 150 E-Tec HO as well ....
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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Old 06-01-2011, 09:05 PM   #24
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How large can you go with the 3D printer?
X 298mm
Y 185mm
Z 203mm
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Old 07-01-2011, 08:09 PM   #25
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I'm in love with this boat so far. Think it looks great!!!
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Old 20-01-2011, 08:31 AM   #26
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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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Old 20-01-2011, 11:48 AM   #27
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Quote:
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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.
Looks great, and great news. I think I know who it is
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Old 22-01-2011, 09:37 AM   #28
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Adam

Whats the advantage of the double chine?

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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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Old 23-01-2011, 04:20 PM   #29
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Adam

Whats the advantage of the double chine?
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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Old 23-01-2011, 10:51 PM   #30
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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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Old 25-01-2011, 08:12 AM   #31
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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
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
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Old 25-01-2011, 12:09 PM   #32
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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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Old 25-01-2011, 12:26 PM   #33
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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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Old 25-01-2011, 01:20 PM   #34
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Quote:
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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!
Thanks for that, look forward to seeing the finished product
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Old 28-01-2011, 09:11 AM   #35
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Just going through the primers and any fine filling.
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Old 28-01-2011, 02:24 PM   #36
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Just going through the primers and any fine filling.
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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Old 28-01-2011, 02:40 PM   #37
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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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Old 24-02-2011, 05:41 PM   #38
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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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Old 24-02-2011, 05:46 PM   #39
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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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Old 25-02-2011, 07:32 AM   #40
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that is looking very good
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