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14 October 2014, 21:05
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#1
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Member
Country: UK - England
Town: Looe
Make: Delta
Length: 4m +
Engine: Mercury
Join Date: Apr 2004
Posts: 1,409
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Sneaky pics optimax Diesel engine.
 
Should be fun! Boat built but ribcraft as the demo platform for the engine.
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14 October 2014, 21:35
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#2
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RIBnet admin team
Country: Ireland
Length: 4m +
Join Date: Feb 2008
Posts: 14,898
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14 October 2014, 22:30
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#3
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Member
Country: UK - England
Town: Wild West
Boat name: No Boat
Make: No Boat
Length: under 3m
Join Date: Jan 2008
Posts: 5,306
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Quote:
Originally Posted by Turbodiesel
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Looks good...and smaller than I'd have thought...Be interesting to compare performance and economy figures against petrol powered 6.8!
Testing this week I hear 
Looks like a Big Prop!!
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A clever Man learns by his mistakes..
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14 October 2014, 22:50
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#4
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Member
Country: UK - England
Town: Wakefield
Boat name: Bouncer
Make: Redbay Stormforce
Length: 6m +
Engine: 2x Honda 100 Hp
MMSI: 235025718
Join Date: Jun 2009
Posts: 4,177
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Wonder how much torque it kicks out
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14 October 2014, 22:51
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#5
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Member
Country: UK - England
Town: Southampton
Boat name: Hissing Sid
Make: Ross Smith Cobra
Length: 6m +
Engine: 200HP Optimax
MMSI: 235038046
Join Date: Jun 2002
Posts: 3,804
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Looking forward to seeing the results.
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14 October 2014, 23:28
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#6
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RIBnet admin team
Country: UK - Scotland
Boat name: imposter
Make: FunYak
Length: 3m +
Engine: Tohatsu 30HP
MMSI: 235089819
Join Date: Sep 2005
Posts: 11,627
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Would it be going too far to describe this as potentially the biggest change in small boat engines in a decade?
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14 October 2014, 23:56
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#7
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Member
Country: UK - England
Town: London/Oxford
Make: Ribcrafts
Length: 5m +
Engine: 150hp/2x115hp
MMSI: 235090215
Join Date: Oct 2002
Posts: 2,250
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Quote:
Originally Posted by willk
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Those are not diesel's they are the JP optimax engines - Mercury Government Sales | Technology
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15 October 2014, 10:05
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#8
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Member
Country: UK - England
Town: Wild West
Boat name: No Boat
Make: No Boat
Length: under 3m
Join Date: Jan 2008
Posts: 5,306
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Quote:
Originally Posted by Poly
Would it be going too far to describe this as potentially the biggest change in small boat engines in a decade?
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As you say...potentially (If it's any good)..For sure!..Coiuld be a real Gamechager!
__________________
A clever Man learns by his mistakes..
A Wise Man learns by other people's!
The Road to HELL ..is Paved with "Good inventions!"
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15 October 2014, 10:18
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#9
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Member
Country: UK - England
Town: Mighty Penryn
Boat name: Little Joe.
Make: Avon Searider
Length: 4m +
Engine: Honda BF50
Join Date: Aug 2005
Posts: 8,872
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Quote:
Originally Posted by Maximus
....Coiuld be a real Gamechager!
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Shame we can't run 'em on red. 
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15 October 2014, 10:23
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#10
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RIBnet admin team
Country: Ireland
Length: 4m +
Join Date: Feb 2008
Posts: 14,898
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Quote:
Originally Posted by Mollers
Shame we can't run 'em on red. |
We could run them on "Green" however - interesting indeed!
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15 October 2014, 10:25
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#11
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Member
Country: UK - England
Town: Mighty Penryn
Boat name: Little Joe.
Make: Avon Searider
Length: 4m +
Engine: Honda BF50
Join Date: Aug 2005
Posts: 8,872
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Quote:
Originally Posted by willk
We could run them on "Green" however - interesting indeed!
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Chip oil, with 3000 shite hawks in tow. 
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15 October 2014, 10:27
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#12
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RIBnet admin team
Country: Ireland
Length: 4m +
Join Date: Feb 2008
Posts: 14,898
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Quote:
Originally Posted by Mollers
Chip oil, with 3000 shite hawks in tow. |
Chip oil?
No, Irish MGO is green, not red, naturally!
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15 October 2014, 10:30
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#13
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Member
Country: UK - Scotland
Town: north ayrshire
Boat name: charlie girl
Make: S/R5.4/regal3760
Length: 10m +
Engine: Suzukidf70 2x6lp 315
Join Date: Jul 2009
Posts: 3,985
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Quote:
Originally Posted by Mollers
Shame we can't run 'em on red. |
No reason you can't run on red just need to install a heating system if you want to legally declare 60/40 split
Then again if it's trailered who knows where you bought the fuel or whether you paid the duty on it
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15 October 2014, 10:33
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#14
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Member
Country: UK - England
Town: Fareham
Boat name: Red Dog
Make: Porters Renegade
Length: 6m +
Engine: 150 HP Yamaha
Join Date: May 2010
Posts: 610
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A diesel that runs up to 6000 RMP, impressive!!
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15 October 2014, 11:26
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#15
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Member
Country: UK - England
Town: Mighty Penryn
Boat name: Little Joe.
Make: Avon Searider
Length: 4m +
Engine: Honda BF50
Join Date: Aug 2005
Posts: 8,872
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Quote:
Originally Posted by willk
Chip oil?
No, Irish MGO is green, not red, naturally!
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Ah, tawt you meant bio chip fat smelly stuff.
Wasn't changing the colour of fuel oil big business over your way a few years back?
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15 October 2014, 16:41
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#16
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Member
Country: UK - England
Town: Gillingham Dorset
Boat name: Green Marlin
Make: Quickilver
Length: 5m +
Engine: 90hp Mariner
Join Date: Jul 2012
Posts: 293
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I'm assuming these are a two stroke smoker?
Interesting if so & the fact they run on just about anything oily seems a good idea. Jet A1 is apparently quite cheap...
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15 October 2014, 17:07
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#17
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Member
Country: USA
Town: CA
Make: Zodiac RIB-P
Length: 7m +
Engine: Suzuki 250
Join Date: Aug 2010
Posts: 1,235
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Sneaky pics optimax Diesel engine.
A Google search says these have been around for 10 years. The one page I read had a response from the engine guy saying to run them on regular ultra low sulphur diesel.
Oops. Said they can burn diesel in a pinch or for a short time. It was a Mercury blog. Having trouble with the phone pasting the link.
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15 October 2014, 17:38
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#18
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Member
Country: UK - England
Town: Sidmouth
Boat name: Various
Make: Avon, Ribcraft
Length: 4m +
Engine: Mercury 40, Honda 50
Join Date: Nov 2012
Posts: 266
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I wonder how heavy it is compared to a normal petrol outboard...
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15 October 2014, 19:06
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#19
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Member
Country: UK - Scotland
Town: Glasgow
Boat name: stramash
Make: Tornado
Length: 5m +
Engine: Etec 90
Join Date: Feb 2006
Posts: 5,090
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Modern diesel tech is so advanced, the weight difference is narrowing all the time, apart from low end torque and fuel variety, kinda makes me wonder why they see it as worthwhile ... ? top SUV's aren't seeing much difference in consumption between 3.0 diesels, and larger petrols .. 0-60 stats are similar too, petrols cheaper ofcourse, which balances the better diesel mpg .. so what do we have ? better torque,economy, simpler electrics ?
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15 October 2014, 19:34
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#20
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Member
Country: UK - England
Town: Sidmouth
Boat name: Various
Make: Avon, Ribcraft
Length: 4m +
Engine: Mercury 40, Honda 50
Join Date: Nov 2012
Posts: 266
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There were diesel engines being fitted to aircraft 5–10 years ago, but I'm not sure what's happening now: the main manufacturer went bust.
Fuel consumption and availability were supposed to be the big benefits, but they weren't catching on all that well. Presumably they managed to make them at least somewhat light-weight, and maybe diesel outboards could benefit from similar engineering.
Nitrous oxide emissions are nasty, though. I wouldn't be too surprised to see higher fuel duty for diesel if it continues to be a problem in London. That or higher VED for diesel cars.
Diesel's a bit safer to handle, though. Does that affect how easy it is to get a boat coded?
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Eastern Thunder
Northern Exposure 5
