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27-09-2008, 11:34 AM
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#1
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Registered User
Country: New Zealand
Location: Tauranga
Occupation: Boatbuilder
Boat make: Mitchell RecJet 48
Engines: Chevrolet LS364
Cruising area: rivers
Join Date: Dec 2007
Location: Tauranga
Posts: 36
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Hydrobahn Rec Jet 56
This is the new Rec Jet 56 under develpoment and construction. At 5.6m it's a full 800mm longer than the popular Rec Jet 48.
This particular vessel will be powered with a Hamilton Jet 212 jet pump and a GM LQ9 6.0L engine making 440hp. Seating for 5 adults and capable of towing all your toys.
Will eventually be offered in an outboard version (Rec Sport 56) with USCG and CE approvals.
Maybe a little smaller than the offshore power boats, but thought you may be interested as the project moves on.
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30-09-2008, 09:32 AM
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#2
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Registered User
Country: New Zealand
Location: Tauranga
Occupation: Boatbuilder
Boat make: Mitchell RecJet 48
Engines: Chevrolet LS364
Cruising area: rivers
Join Date: Dec 2007
Location: Tauranga
Posts: 36
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Transom and rear panel being fitted...
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30-09-2008, 09:35 AM
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#3
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Registered User
Country: New Zealand
Location: Tauranga
Occupation: Boatbuilder
Boat make: Mitchell RecJet 48
Engines: Chevrolet LS364
Cruising area: rivers
Join Date: Dec 2007
Location: Tauranga
Posts: 36
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foredeck being framed
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01-10-2008, 06:43 AM
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#4
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numbskull
Country: United Kingdom
Location: South
Occupation: none
Interests: none
Boat name: Leviathan
Boat make: Phantom 28
Cruising area: South Coast
Join Date: Mar 2004
Location: South
Posts: 15,959
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Can you tell us some more about that motor please.
rpm, tourque, curves etc.
cheers
jon
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"I Agree with everything you say really!" - John Cooke to Jon Fuller - 26-01-2013
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01-10-2008, 07:07 AM
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#5
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Registered User
Country: Norfolk
Location: Norwich
Interests: Boats,fast cars, fast women
Boat name: Red-Devil
Boat make: Honda 225
Engines: Honda 225 and Yamaha 70
Cruising area: offshore and Oulton Broad
Join Date: May 2008
Location: Norwich
Posts: 17
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Wow, mega boats, look at his web-site can you imagine one of them going up the river in Norwich lol
How much do they cost ?
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01-10-2008, 11:14 AM
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#6
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Registered User
Country: uk
Location: poole
Occupation: retail
Interests: sport and being lazy
Boat make: ring rib
Engines: merc xr2
Cruising area: bournemouth bay
Join Date: Jan 2006
Location: poole
Posts: 1,681
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Don't know anything about aluminium boats, are all aluminium boats built of the same specification ali and is the build process used similar to that of a glass boat, only Adam on this forum as far as I know has built boats in ali, although ali boats around 23' did prove very successful in class 3 racing back in the 80's ... that boat does look like wicked fun could be had on an inland waterway sure as hell would scare the ducks !
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i can na give her any more captain
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02-10-2008, 11:00 AM
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#7
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Registered User
Country: New Zealand
Location: Tauranga
Occupation: Boatbuilder
Boat make: Mitchell RecJet 48
Engines: Chevrolet LS364
Cruising area: rivers
Join Date: Dec 2007
Location: Tauranga
Posts: 36
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Attached is the dyno sheet from GM for the standard LQ9. This one is what Indmar are refering to as the 6.0L ss and is supposed to make 420hp.
Also attached is the dyno sheet for the new LS376/480 which we are looking at using for another client. This makes 480hp out of the box with a factory 12 month warranty. Being all alloy, we have weighed its older brother, the LS2, and including all fluids, alternator, starter but excluding the heat exchanger and exhaust manifolds, weighed in at around 185kg. (weigh a new 350hp Verado <spelling>).
Most aluminium recreational boats are built from the 5000 series of aluminium alloys. These contain higher amounts of magnesium (up to about 4%. This is banned form military vessels after HMS Sheffield was sunk during the Faulklands, it was discovered that the magnesium burned out of the alloy sheet in her upper structure). It is easy to work with, and most common woodworking tools can be used, (skill saw with a TCT blade, HSS drill bits, power plane, band saw, etc...) Construction under 9m is a little backwards to 'normal' boatbuilding in a sense that you create the outer skin first, then place the structure on the inside. Using alloy means we are glorified sheet metal workers, and custom changes are really simple to make and adapt.
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07-10-2008, 08:46 AM
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#8
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Registered User
Country: New Zealand
Location: Tauranga
Occupation: Boatbuilder
Boat make: Mitchell RecJet 48
Engines: Chevrolet LS364
Cruising area: rivers
Join Date: Dec 2007
Location: Tauranga
Posts: 36
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Here is a short clip from one of our boats operating in North Carolina
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07-10-2008, 12:51 PM
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#9
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Registered User
Location: Bournemouth
Join Date: Mar 2004
Location: Bournemouth
Posts: 391
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I like the fact that kid at the front is leaning on the console and prime position to be launced off the front or out the back.
I guess if it had tubes round the side it would be fine.
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You can never go fast enough...
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14-10-2008, 07:11 PM
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#10
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Registered User
Country: New Zealand
Location: Tauranga
Occupation: Boatbuilder
Boat make: Mitchell RecJet 48
Engines: Chevrolet LS364
Cruising area: rivers
Join Date: Dec 2007
Location: Tauranga
Posts: 36
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Unfortunately customers come first, so progress has been delayed with their new machines and a move to a larger workshop.
Thought I'd post some pics of my old boat going up and down one of the local rivers...
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23-10-2008, 08:48 AM
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#11
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Registered User
Country: New Zealand
Location: Tauranga
Occupation: Boatbuilder
Boat make: Mitchell RecJet 48
Engines: Chevrolet LS364
Cruising area: rivers
Join Date: Dec 2007
Location: Tauranga
Posts: 36
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Managed to get a spare couple of days on the boat this week. Got the new design gauge fascia done and in. Start with the pump and engine shortly.
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20-12-2008, 06:54 AM
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#12
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Registered User
Country: New Zealand
Location: Tauranga
Occupation: Boatbuilder
Boat make: Mitchell RecJet 48
Engines: Chevrolet LS364
Cruising area: rivers
Join Date: Dec 2007
Location: Tauranga
Posts: 36
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Time for my boat again...
Interior finnished fabrication, front vents in the foredeck
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24-12-2008, 11:46 PM
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#13
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Registered User
Country: New Zealand
Location: Tauranga
Occupation: Boatbuilder
Boat make: Mitchell RecJet 48
Engines: Chevrolet LS364
Cruising area: rivers
Join Date: Dec 2007
Location: Tauranga
Posts: 36
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the dramas of the engine cover are over... seem to have made a career out of these, just in need of a little more welding and grinding, then some bling stuff for assembly...
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05-01-2009, 07:41 AM
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#14
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Registered User
Country: New Zealand
Location: Tauranga
Occupation: Boatbuilder
Boat make: Mitchell RecJet 48
Engines: Chevrolet LS364
Cruising area: rivers
Join Date: Dec 2007
Location: Tauranga
Posts: 36
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seat sliders finnished... now it's time for the tear down and paint...
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05-01-2009, 09:55 AM
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#15
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numbskull
Country: United Kingdom
Location: South
Occupation: none
Interests: none
Boat name: Leviathan
Boat make: Phantom 28
Cruising area: South Coast
Join Date: Mar 2004
Location: South
Posts: 15,959
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That work is superb! Lovely styling too.
Great to see people that can work with metal like that. (I used to work in the aircraft industry, so have seen some nice ally work)
__________________
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"I Agree with everything you say really!" - John Cooke to Jon Fuller - 26-01-2013
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06-01-2009, 12:01 PM
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#16
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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: 1,838
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Very much agree with Jon's comments. Actually may have a contact who could be interested in having a boat built - do you build to other peoples design?
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06-01-2009, 06:16 PM
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#17
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Registered User
Country: New Zealand
Location: Tauranga
Occupation: Boatbuilder
Boat make: Mitchell RecJet 48
Engines: Chevrolet LS364
Cruising area: rivers
Join Date: Dec 2007
Location: Tauranga
Posts: 36
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Most of our work is customised around a base package. We have built a few boats designed by others before, so another shouldn't be any dramas.
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24-01-2009, 10:06 PM
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#18
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Registered User
Country: New Zealand
Location: Tauranga
Occupation: Boatbuilder
Boat make: Mitchell RecJet 48
Engines: Chevrolet LS364
Cruising area: rivers
Join Date: Dec 2007
Location: Tauranga
Posts: 36
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managed to get some paint on the underside of the hull this week, have been interupted with a couple of raceboats that need building and repair.
First tiime I've sprayed this type of system (base/clear) so am happy with the result.
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24-01-2009, 10:50 PM
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#19
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/280
Country: Uk- Cambridge/Hertfordshire
Location: Hometown: Hertfordshire
Occupation: Retail Manager
Interests: Motorsport
Join Date: Feb 2008
Location: Hometown: Hertfordshire
Posts: 469
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Nice colour choice
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27-01-2009, 06:12 PM
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#20
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Registered User
Country: New Zealand
Location: Tauranga
Occupation: Boatbuilder
Boat make: Mitchell RecJet 48
Engines: Chevrolet LS364
Cruising area: rivers
Join Date: Dec 2007
Location: Tauranga
Posts: 36
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got the boat rolled over awaiting topside paint prep...
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