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02-09-2007, 10:55 PM
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#1
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Registered User
Country: england
Location: London
Occupation: Analyst
Interests: Cats, Stamp Collecting, cookery, Reading, Travelling. Ping Pong.
Boat name: Shogun Star*
Boat make: Cigarette Squadron 39
Engines: 1 x yam 25hp 1 x mariner 15hp, 1 8hp sailmate, 1 75 4 stroke, 1 250 merc EFI, 1 2.5merc
Cruising area: solent
Join Date: Aug 2007
Location: London
Posts: 64
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One diesel one petrol one boat
This may seem an outrageous question but I'm new to this inboard lark and just trying to get my head around it:
could you have in a boat one diesel inboard and one petrol inboard side by side running off the two seperate internal fuel tanks?
I have recently put into drivers a cigarette squadron 39' and I'm looking to get rid of the outboard bracket and go inboard.
I dont want to go amazingly fast or spend vast amounts of money. Ideally looking for a robust package with low maintenance which could give me 45knots min. any suggestions comrades?
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02-09-2007, 11:14 PM
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#2
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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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Quote:
Originally Posted by Dictator
This may seem an outrageous question
could you have in a boat one diesel inboard and one petrol inboard side by side running off the two seperate internal fuel tanks?
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Yes, outrageous is the first thing that comes to mind, .....no, hang on, the first thing that comes to mind is, why on earth would this idea even cross a normal persons mind.
Don't be daft!
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"I Agree with everything you say really!" - John Cooke to Jon Fuller - 26-01-2013
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03-09-2007, 01:40 PM
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#3
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BananaShark Member
Country: UK
Location: Salcombe South Devon
Occupation: Racer and builder
Interests: Winning races
Boat name: BananaShark
Boat make: BananaShark 34' Race
Engines: Twin Yanmar BY 260's
Join Date: Mar 2004
Location: Salcombe South Devon
Posts: 4,638
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Maybe if you explained the logic behind the question? What do you hope to achieve?
__________________
Cookee
British Champions! RIB Formula 1 2005
National Speed Record Holder at 90.15 (still)
www.bananasharkracing.com
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03-09-2007, 02:17 PM
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#4
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Registered User
Join Date: Mar 2004
Posts: 6,891
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A boat with performance & handling to match the paint job!
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03-09-2007, 03:51 PM
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#5
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Large member
Country: England
Location: On the farm
Occupation: General Trouble Causer Salterns Boatyard
Interests: Official smartass
Boat name: Seahorse.org
Boat make: a V24 and a SLOW unstable ICE Bladerunner
Engines: 2x300 promax, 320 Volvo
Cruising area: England/France & Med
Join Date: May 2005
Location: On the farm
Posts: 2,681
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Yes it can be done.
It would be very stupid to do so.
About 100 reasons. The engines have mismatched power output and rev ranges, so it would handle like a pig. it would create alternate drag as the speed changed. You could run one at a time, but then the drag of one inop leg would remove all benefit and you would prolly not get onto the plane. The duplication of instrumentation, duplication of partsetc which you whould not need it you had one system. It would cost about double to rig it. The engines required to get 45 knots would be about double that required if you used single fuel.
Thinking of a better way to put it.... No - Stupid idea is the only thing that comes to mind. Why on earth would you even think of something like that?
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03-09-2007, 05:11 PM
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#6
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Registered User
Country: england
Location: London
Occupation: Analyst
Interests: Cats, Stamp Collecting, cookery, Reading, Travelling. Ping Pong.
Boat name: Shogun Star*
Boat make: Cigarette Squadron 39
Engines: 1 x yam 25hp 1 x mariner 15hp, 1 8hp sailmate, 1 75 4 stroke, 1 250 merc EFI, 1 2.5merc
Cruising area: solent
Join Date: Aug 2007
Location: London
Posts: 64
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the thinking was that the petrol would sound good but the diesel be more practical so by fusing them together could maybe get the best of both worlds!
So now this is totally out of the question what is a robust package to go for which wont break the bank?
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03-09-2007, 05:14 PM
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#7
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Registered User
Join Date: Mar 2004
Posts: 6,891
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A pair of Yam 150's?
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03-09-2007, 05:14 PM
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#8
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Registered User
Country: england
Location: London
Occupation: Analyst
Interests: Cats, Stamp Collecting, cookery, Reading, Travelling. Ping Pong.
Boat name: Shogun Star*
Boat make: Cigarette Squadron 39
Engines: 1 x yam 25hp 1 x mariner 15hp, 1 8hp sailmate, 1 75 4 stroke, 1 250 merc EFI, 1 2.5merc
Cruising area: solent
Join Date: Aug 2007
Location: London
Posts: 64
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Quote:
Originally Posted by Matt
A boat with performance & handling to match the paint job!
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dont worry I am currently dealing with this!
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03-09-2007, 08:03 PM
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#9
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Registered User
Country: uk
Location: Romsey
Occupation: Property & Finance
Interests: Salsa
Boat make: Extreme 24
Engines: 454 Mag
Cruising area: Solent
Join Date: Mar 2006
Location: Romsey
Posts: 160
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I dont think you need to get rid of the outboard bracket, just let gravity take its course!
Who on earth rigged that and why?
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03-09-2007, 10:38 PM
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#10
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Large member
Country: England
Location: On the farm
Occupation: General Trouble Causer Salterns Boatyard
Interests: Official smartass
Boat name: Seahorse.org
Boat make: a V24 and a SLOW unstable ICE Bladerunner
Engines: 2x300 promax, 320 Volvo
Cruising area: England/France & Med
Join Date: May 2005
Location: On the farm
Posts: 2,681
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Expensive to run, but better 2x petrol. Small block V8 with a nice deep leg.
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03-09-2007, 10:43 PM
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#11
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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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Quote:
Originally Posted by verytricky
Small block V8
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In a 40 footer??? you're keen.
__________________
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"I Agree with everything you say really!" - John Cooke to Jon Fuller - 26-01-2013
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04-09-2007, 12:32 AM
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#12
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Large member
Country: England
Location: On the farm
Occupation: General Trouble Causer Salterns Boatyard
Interests: Official smartass
Boat name: Seahorse.org
Boat make: a V24 and a SLOW unstable ICE Bladerunner
Engines: 2x300 promax, 320 Volvo
Cruising area: England/France & Med
Join Date: May 2005
Location: On the farm
Posts: 2,681
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300hp x 2 with less weight... Should get 45 knots unless its a crap hull.?
Or knot?
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05-09-2007, 05:08 PM
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#13
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Registered User
Country: england
Location: London
Occupation: Analyst
Interests: Cats, Stamp Collecting, cookery, Reading, Travelling. Ping Pong.
Boat name: Shogun Star*
Boat make: Cigarette Squadron 39
Engines: 1 x yam 25hp 1 x mariner 15hp, 1 8hp sailmate, 1 75 4 stroke, 1 250 merc EFI, 1 2.5merc
Cruising area: solent
Join Date: Aug 2007
Location: London
Posts: 64
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Quote:
Originally Posted by verytricky
300hp x 2 with less weight... Should get 45 knots unless its a crap hull.?
Or knot?
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I think this sounds the way to go! Why a deep leg? What is the best leg to go for in this situation? Duo v single prop? There seem to be some good deals on US ebay what do you reckon?
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05-09-2007, 05:46 PM
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#14
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Registered User
Country: UK
Location: South Coast
Interests: Boats/Cranes
Boat make: Revenger 29 RIB
Engines: Illmor V10/625hp.
Join Date: Oct 2005
Location: South Coast
Posts: 247
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Pair of Chevy crate engines 415hp a piece,on bravo's.
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05-09-2007, 06:14 PM
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#15
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Registered User
Country: UK
Join Date: Jun 2006
Posts: 1,237
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Alternatively you could sell it on to someone who knows what their doing with boats.
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05-09-2007, 06:43 PM
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#16
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Registered User
Country: Scotland
Location: Kirkcudbright
Interests: Boats n Lambrettas
Boat make: Boatless
Join Date: Mar 2004
Location: Kirkcudbright
Posts: 978
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Quote:
Originally Posted by Turnip1
Alternatively you could sell it on to someone who knows what their doing with boats.
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05-09-2007, 11:20 PM
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#17
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Member
Country: northern ireland
Location: tyrone
Occupation: wall and floor tiler
Interests: boats boats boats
Boat name: the black devil
Boat make: 27ft fletcher zingaro
Engines: 2004 vm motori 300
Cruising area: lough neagh
Join Date: Dec 2005
Location: tyrone
Posts: 30
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what about a pair of vm\mercruisers\cummins300hp diesel with bravo 3 legs would make a real beauty and plenty of noise too with straight tru exhausts try www.coastalrides.co.uk
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06-09-2007, 01:36 PM
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#18
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Registered User
Country: england
Location: London
Occupation: Analyst
Interests: Cats, Stamp Collecting, cookery, Reading, Travelling. Ping Pong.
Boat name: Shogun Star*
Boat make: Cigarette Squadron 39
Engines: 1 x yam 25hp 1 x mariner 15hp, 1 8hp sailmate, 1 75 4 stroke, 1 250 merc EFI, 1 2.5merc
Cruising area: solent
Join Date: Aug 2007
Location: London
Posts: 64
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Quote:
Originally Posted by Turnip1
Alternatively you could sell it on to someone who knows what their doing with boats.
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Is that an offer?
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06-09-2007, 01:38 PM
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#19
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Registered User
Country: england
Location: London
Occupation: Analyst
Interests: Cats, Stamp Collecting, cookery, Reading, Travelling. Ping Pong.
Boat name: Shogun Star*
Boat make: Cigarette Squadron 39
Engines: 1 x yam 25hp 1 x mariner 15hp, 1 8hp sailmate, 1 75 4 stroke, 1 250 merc EFI, 1 2.5merc
Cruising area: solent
Join Date: Aug 2007
Location: London
Posts: 64
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Quote:
Originally Posted by Gordon McMath
Pair of Chevy crate engines 415hp a piece,on bravo's.
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Gordon are these big block or small blocks. I was looking on ebay in the states recently! Seems there is some good stuff over there! What can you offer me?
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06-09-2007, 01:41 PM
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#20
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Registered User
Country: england
Location: London
Occupation: Analyst
Interests: Cats, Stamp Collecting, cookery, Reading, Travelling. Ping Pong.
Boat name: Shogun Star*
Boat make: Cigarette Squadron 39
Engines: 1 x yam 25hp 1 x mariner 15hp, 1 8hp sailmate, 1 75 4 stroke, 1 250 merc EFI, 1 2.5merc
Cruising area: solent
Join Date: Aug 2007
Location: London
Posts: 64
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Just wondered what packages you think I should go for as you seem to know your stuff? Is the duoprop system the way to go? is a volvo leg compatible with a mercruiser engine?
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