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10-10-2006, 08:36 PM
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#1
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Registered User
Country: Essex
Location: Great Stambridge Essex
Occupation: Director Paving company
Interests: Boating/Squash
Cruising area: Essex Marina/crouch southeast coast
Join Date: Sep 2004
Location: Great Stambridge Essex
Posts: 2,033
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1 Engine or 2
Whats the crack does 2 engines really make that much difference?
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10-10-2006, 08:39 PM
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#2
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Registered User
Country: England
Location: Birmingham
Occupation: Scratching
Interests: Big Dinners
Boat name: Never Enough
Boat make: Seaquel 600xs
Engines: 225hp Merc ProMax
Cruising area: Anywhere! I prefer Weymouth
Join Date: May 2005
Location: Birmingham
Posts: 3,232
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Re: 1 Engine or 2
Quote:
Originally posted by Taz
Whats the crack does 2 engines really make that much difference?
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Of course it does!!!! Ask any bank manager...
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I got jumper cables!
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10-10-2006, 09:04 PM
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#3
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Registered User
Country: England
Location: Crayford, Kent.
Occupation: Electrical gezza!
Interests: Petrolhead
Boat name: Wayne Kerr
Boat make: Phantom xl
Engines: Mercury 2.5, 200(ish)
Cruising area: Essex, Hampshire, Mediterranean
Join Date: Sep 2004
Location: Crayford, Kent.
Posts: 1,199
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Re: Re: 1 Engine or 2
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10-10-2006, 09:25 PM
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#4
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Registered User
Location: GOLDEN MILE
Boat name: LILY THE PINK AND TERMINATOR 11
Boat make: PHANTOM 21 AND 20
Engines: 2.5 EFI X 2
Join Date: Mar 2004
Location: GOLDEN MILE
Posts: 2,475
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Re: 1 Engine or 2
Quote:
Originally posted by Taz
Whats the crack does 2 engines really make that much difference?
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Well for a start if one engine breaks you've got another to get you home, No more long tows
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PLEASE DON'T STEAL...THE GOVERNMENT DON'T LIKE THE COMPETITION
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10-10-2006, 09:32 PM
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#5
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Registered User
Country: England
Location: Birmingham
Occupation: Scratching
Interests: Big Dinners
Boat name: Never Enough
Boat make: Seaquel 600xs
Engines: 225hp Merc ProMax
Cruising area: Anywhere! I prefer Weymouth
Join Date: May 2005
Location: Birmingham
Posts: 3,232
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Its double the amount of fuel you need to carry also another 200kgs in weight for the second engine your looking at adding another 320-350kgs to the boat. Double the fuel bill for the day.
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10-10-2006, 09:33 PM
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#6
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Registered User
Country: UK
Location: Weston Super Mare
Occupation: Electrical Engineer
Join Date: Mar 2004
Location: Weston Super Mare
Posts: 6,351
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I would say its worth 15mph top end but the acceleration is awesome.
takes some getting used to though
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10-10-2006, 09:37 PM
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#7
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Registered User
Location: GOLDEN MILE
Boat name: LILY THE PINK AND TERMINATOR 11
Boat make: PHANTOM 21 AND 20
Engines: 2.5 EFI X 2
Join Date: Mar 2004
Location: GOLDEN MILE
Posts: 2,475
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I reckon its worth 20/25 mph and its not double the fuel, with twins you wont work the engines as hard so won't use as much fuel.
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10-10-2006, 09:52 PM
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#8
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hello
Join Date: Mar 2004
Posts: 2,739
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I believe when you take into account the extra weight and drag its the equivalent of a 50% power increase. More stability though!!!
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10-10-2006, 10:08 PM
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#9
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Registered User
Country: Essex
Location: Great Stambridge Essex
Occupation: Director Paving company
Interests: Boating/Squash
Cruising area: Essex Marina/crouch southeast coast
Join Date: Sep 2004
Location: Great Stambridge Essex
Posts: 2,033
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I was more thinking of weight of fuel and engine.. my sunseeker has 2 engines but thats just a big heavy pile of plop..
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10-10-2006, 10:15 PM
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#10
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Registered User
Join Date: Mar 2004
Posts: 6,891
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The formula runs 63mph, tracks as straight as a die and chomps up all the typical solent chop, but can still return 3mpg taking it easy. And the sound is awesom. I like twins...next boat hopefully will have twins too.
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10-10-2006, 11:24 PM
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#11
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Registered User
Country: UK
Location: Thorpe Bay
Occupation: IT Director, www.lighthouseit.co.uk
Interests: Boats, Surfing & Snowboarding
Boat name: Isabella / Cool Runnings II / Bella / Sea Pup / Sea Dog / Speedy II / Bernico F3
Boat make: Colvic 35 Suncruiser / Bernico F3 / Phantom 16 / Zodiac 420 YL / RIB / Apollo 9
Engines: 2 x Perkins Sabre 225ti / Mercury Pro XS /Mercury Pro XS 115/ Tohatsu 2.5 / Mercury 25 / Mercury 50
Cruising area: Thames Estuary / River Crouch / Salcombe
Join Date: Jun 2004
Location: Thorpe Bay
Posts: 932
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Re: 1 Engine or 2
Quote:
Originally posted by Taz
Whats the crack does 2 engines really make that much difference?
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2 has got to be the coolest, I would have loved a ride in the P23 with twin EFI's on it!
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Loving the Spitfire with a 25HP Mercury
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11-10-2006, 12:47 AM
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#12
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Registered User
Country: USA
Location: Michigan
Interests: Going way fast
Boat name: Plain Vanilla
Boat make: Cougar, US1, 46'
Engines: 3 blown 572's
Cruising area: Lake Michigan
Join Date: Dec 2005
Location: Michigan
Posts: 78
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Well, if two is good, three is great.
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11-10-2006, 07:11 AM
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#13
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Registered User
Country: New Zealand
Location: Auckland
Occupation: Construction Manager
Interests: Offshore Powerboat Racing
Boat name: NZ Privateer
Boat make: 29ft Catamaran
Engines: 2 x Mercury 300X
Join Date: Dec 2004
Location: Auckland
Posts: 214
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make sure you have rh and lh gearboxes or bloody strong arms
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11-10-2006, 05:26 PM
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#14
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Senior Member
Country: England
Location: Watford
Occupation: Private Hire Company
Interests: Boats Cars women and wine
Boat name: The Bandit & The Bandit1
Boat make: Revenger San Marino & Hunton Rib
Engines: For sale Twin 225 Opti's
Cruising area: The Solent
Join Date: Mar 2006
Location: Watford
Posts: 298
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The Revenger San Marino which has a hull length of 25'' had a 200 efi on. The boat pulled about 52 mph. Most of the time it was driven between 45 and 50 so was running 5500rpm. Ive now got twin 225 opti. Ok so these engines are more efficient but normal running 45 to 50 and there only pulling 3000-3500 revs. It seems as though its using less gas but having never checked the MPG can't say for sure.
Top end well we don't have the right props but been told it should pull 75-78 when we find the right props (and driver)
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11-10-2006, 05:51 PM
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#15
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Registered User
Boat make: Phantom 23
Join Date: Mar 2006
Posts: 1,693
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dude the transom isnt straight on the 700, how are you gona get 2 engines on ?
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11-10-2006, 06:19 PM
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#16
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Registered User
Join Date: Mar 2004
Posts: 5,724
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Quote:
Originally posted by PuppiesBalls
dude the transom isnt straight on the 700, how are you gona get 2 engines on ?
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the transom is wide enough for twins @ 19" centres.
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11-10-2006, 07:11 PM
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#17
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Registered User
Join Date: Mar 2004
Posts: 6,891
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What's the closest you can (reasonably) run a pair of twins with alien cowls?
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11-10-2006, 07:25 PM
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#18
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Registered User
Country: Essex
Location: Great Stambridge Essex
Occupation: Director Paving company
Interests: Boating/Squash
Cruising area: Essex Marina/crouch southeast coast
Join Date: Sep 2004
Location: Great Stambridge Essex
Posts: 2,033
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Quote:
Originally posted by Gav
the transom is wide enough for twins @ 19" centres.
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I sure well hope so or thats one hell of a gold bracket hanging off the back!!!!
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11-10-2006, 07:27 PM
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#19
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Registered User
Country: Essex
Location: Great Stambridge Essex
Occupation: Director Paving company
Interests: Boating/Squash
Cruising area: Essex Marina/crouch southeast coast
Join Date: Sep 2004
Location: Great Stambridge Essex
Posts: 2,033
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Quote:
Originally posted by waybomb
Well, if two is good, three is great.
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Do you pull the fuel tanker behind?
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11-10-2006, 07:43 PM
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#20
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Registered User
Country: England
Location: Crayford, Kent.
Occupation: Electrical gezza!
Interests: Petrolhead
Boat name: Wayne Kerr
Boat make: Phantom xl
Engines: Mercury 2.5, 200(ish)
Cruising area: Essex, Hampshire, Mediterranean
Join Date: Sep 2004
Location: Crayford, Kent.
Posts: 1,199
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Fuel prices across the "pond" ain't nothing like they are here. Thanks Gordon Brown
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