|
|
05-19-2015, 07:52 PM
|
#1
|
Guru
City: South FL
Vessel Name: Oliver
Vessel Model: Nordhavn 47 Hull# 12
Join Date: Apr 2013
Posts: 3,607
|
Mercury Diesel Outboard
__________________
Thanks, Oliver
M/V Oliver
Nordhavn 47 Hull #12
|
|
|
05-19-2015, 08:31 PM
|
#2
|
Guru
City: Victoria TX
Vessel Name: Bijou
Vessel Model: 2008 Island Packet PY/SP
Join Date: Nov 2012
Posts: 5,290
|
Would that push a trawler?
|
|
|
05-19-2015, 10:02 PM
|
#3
|
Technical Guru
City: Wilmington, NC
Vessel Name: Louisa
Vessel Model: Custom Built 38
Join Date: Jan 2014
Posts: 6,194
|
That direct injected, spark ignited, non throttled intake, low compression engine is in thermodynamic terms a meld of the Otto and Diesel cycles. Closer to Otto, really, as the high compression of the diesel cycle has much to do with its efficiency.
I'd like to see the dyno lab reports, but doubt that stuff will leak out. Gut feel is BSFC is comparable to a regular optimax, maybe a touch better.
The big deal is they wanted an OB that burned diesel and jet fuel, they don't want gasoline on ships any more. Too many bad fires.
|
|
|
05-19-2015, 10:06 PM
|
#4
|
Guru
City: South FL
Vessel Name: Oliver
Vessel Model: Nordhavn 47 Hull# 12
Join Date: Apr 2013
Posts: 3,607
|
Quote:
Originally Posted by Ski in NC
That direct injected, spark ignited, non throttled intake, low compression engine is in thermodynamic terms a meld of the Otto and Diesel cycles. Closer to Otto, really, as the high compression of the diesel cycle has much to do with its efficiency.
I'd like to see the dyno lab reports, but doubt that stuff will leak out. Gut feel is BSFC is comparable to a regular optimax, maybe a touch better.
The big deal is they wanted an OB that burned diesel and jet fuel, they don't want gasoline on ships any more. Too many bad fires.
|
Ok the first two pieces of text I have no idea what you said (words to big for me). I did Get the last part, gasoline is too combustible to be on navy ships. I can definelty agree with that.
__________________
Thanks, Oliver
M/V Oliver
Nordhavn 47 Hull #12
|
|
|
05-19-2015, 10:29 PM
|
#5
|
Guru
City: Concrete Washington State
Vessel Name: Willy
Vessel Model: Willard Nomad 30'
Join Date: Oct 2007
Posts: 18,743
|
I personally wouldn't want a diesel OB any more than I'd want a diesel car.
__________________
Eric
North Western Washington State USA
|
|
|
05-19-2015, 10:31 PM
|
#6
|
Technical Guru
City: Wilmington, NC
Vessel Name: Louisa
Vessel Model: Custom Built 38
Join Date: Jan 2014
Posts: 6,194
|
I would not like a diesel OB. But I do like my diesel car!!
|
|
|
05-19-2015, 10:37 PM
|
#7
|
Guru
City: Sydney
Vessel Name: Sojourn
Vessel Model: Integrity 386
Join Date: Oct 2011
Posts: 13,333
|
Quote:
Originally Posted by Ski in NC
I would not like a diesel OB. But I do like my diesel car!!
|
+1. On my first diesel car, and I like it too. Only prior experience,2 diesel rental cars.
A hybrid diesel OB sounds weird.
__________________
BruceK
2005 Integrity 386 "Sojourn"
Sydney Australia
|
|
|
05-19-2015, 11:02 PM
|
#8
|
Guru
City: Marathon, Florida
Vessel Name: Walkabout
Vessel Model: 1989 Sea Ray 380 Aft Cabin
Join Date: Jan 2012
Posts: 521
|
I have often wondered why someone has not produced a diesel outboard. Might be nice to have 15 horse that you could take off the dink and use as a get home motor. They make small diesels now for quads, why not outboards?
I don't care for the idea of a converted gas engine. GM did that in the 80s and pretty much ruined the diesel car market.
|
|
|
05-19-2015, 11:19 PM
|
#9
|
Guru
City: Tampa
Join Date: Oct 2013
Posts: 844
|
Quote:
Originally Posted by manyboats
I personally wouldn't want a diesel OB any more than I'd want a diesel car.
|
Curious, why?
Efficient, safer, and of course probably not this one any more than the new truck diesels, but older diesels can be operated on alternative fuel sources. Lot of pluses for diesel.
|
|
|
05-20-2015, 02:41 AM
|
#10
|
Dauntless Award
City: Wrangell, Alaska
Vessel Name: Dauntless
Vessel Model: Kadey Krogen 42 - 148
Join Date: Jan 2013
Posts: 2,820
|
Umm, a good get home motor.
|
|
|
05-20-2015, 02:44 AM
|
#11
|
Dauntless Award
City: Wrangell, Alaska
Vessel Name: Dauntless
Vessel Model: Kadey Krogen 42 - 148
Join Date: Jan 2013
Posts: 2,820
|
This most be the same
OXE - DIESEL OUTBOARD
|
|
|
05-20-2015, 03:27 AM
|
#12
|
Senior Member
City: Brisbane
Vessel Name: Wine Down
Vessel Model: Riviera 35' FB
Join Date: Dec 2013
Posts: 199
|
Quote:
Originally Posted by manyboats
I personally wouldn't want a diesel OB any more than I'd want a diesel car.
|
OOI, have you driven a modern diesel? I wouldn't have another petrol engined daily driver.
|
|
|
05-20-2015, 05:33 AM
|
#13
|
Guru
Join Date: Oct 2007
Posts: 22,553
|
The driver is the military who wants to cut down on the supply hassle of multiple fuels in the field.
UAV, drones , are the first consideration , which is good as weight is a dirty word.
The use of spark ignition reduces the loads enough so gas engine construction , and weights can be had.
IF the air police can be satisfied spark ignition and diesel will be in competition for the daily driver.
The use of lighter OR heavier fuel than diesel means there might be some price competition.
|
|
|
05-20-2015, 05:39 AM
|
#14
|
Guru
City: Ft Pierce
Vessel Name: Sold
Vessel Model: Was an Albin/PSN 40
Join Date: Oct 2011
Posts: 28,155
|
Quote:
Originally Posted by READY2GO
I have often wondered why someone has not produced a diesel outboard. Might be nice to have 15 horse that you could take off the dink and use as a get home motor. They make small diesels now for quads, why not outboards?
I don't care for the idea of a converted gas engine. GM did that in the 80s and pretty much ruined the diesel car market.
|
There have been a few around for many years.
Yanmar was one...but excruciatingly heavy for the hp.
|
|
|
05-20-2015, 08:25 AM
|
#15
|
Guru
City: San Diego
Vessel Name: Circuit Breaker
Vessel Model: 2021..22' Duffy Cuddy cabin
Join Date: Oct 2007
Posts: 6,691
|
Quote:
Originally Posted by manyboats
I personally wouldn't want a diesel OB any more than I'd want a diesel car.
|
Use your imagination.....all the advantages of having one, safe, available anywhere, fuel on board. Not to mention that with a simple plumbing job, connected to your diesel tank, you have a possible "get home" power source with (almost) an inexhaustible supply of fuel. How about a "diesel station" on your boat for feeding the dinghy? No, the advantages of a diesel OB are many.
__________________
Done with diesel power boats! Have fallen in love with all electric!
|
|
|
05-20-2015, 08:42 AM
|
#16
|
Guru
City: South FL
Vessel Name: Oliver
Vessel Model: Nordhavn 47 Hull# 12
Join Date: Apr 2013
Posts: 3,607
|
If we ever get a bigger boat the dinghy will have one, since it uses the same fuel as he mothership that'll be great! No more carrying gas around.
__________________
Thanks, Oliver
M/V Oliver
Nordhavn 47 Hull #12
|
|
|
05-20-2015, 09:31 AM
|
#17
|
Technical Guru
City: Wilmington, NC
Vessel Name: Louisa
Vessel Model: Custom Built 38
Join Date: Jan 2014
Posts: 6,194
|
Carrying gas is a PITA, no doubt. But a diesel outboard is going to be HEAVY and LOUD. Unless they can do some magic to fix those two issues, I'll put up with a gasser dink.
|
|
|
05-20-2015, 09:52 AM
|
#18
|
Guru
City: Concrete Washington State
Vessel Name: Willy
Vessel Model: Willard Nomad 30'
Join Date: Oct 2007
Posts: 18,743
|
Re the diesel car;
I drove a 2012 Jetta diesel automatic for a day as a loaner car. Amazing car and a lot of the diesel negs were almost gone. But there you have it in the word "almost". Never imagined a diesel would be that fast and quiet. But the gas car was quieter and more powerful. I later bought a Jetta turbo gas. It got almost the millage of the diesel and was better in all other respects. There's no point in buying a diesel unless it's actually better. Kinda like the Prius .. not cost effective.
Got tired of the harsh ride, noise, lack of space inside and even shifting the stick shift. Traded the Jetta in on a very comfortable Honda Accord w the CVT transmission. Seamless power even if a little less than the Jetta. Without having to orchestrate the road speed/engine speed and shifting I'm free to just drive w both hands on the helm and as a result drive even faster all the time instead of just when I "get on it". And the details like a bit of friction added so when opening the door it dosn't spring back at you. It's a superior car IMO.
__________________
Eric
North Western Washington State USA
|
|
|
05-20-2015, 10:37 AM
|
#19
|
Guru
City: South FL
Vessel Name: Oliver
Vessel Model: Nordhavn 47 Hull# 12
Join Date: Apr 2013
Posts: 3,607
|
I like diesels for heavy work load applications such as towing or heavy equipment. I've been very impressed with fords Eco boost. Dad has a expedition with the 3.5 liter twin turbo Tons of power.
Here's an application where i prefer the diesel power.
__________________
Thanks, Oliver
M/V Oliver
Nordhavn 47 Hull #12
|
|
|
05-20-2015, 10:59 AM
|
#20
|
Guru
City: Concrete Washington State
Vessel Name: Willy
Vessel Model: Willard Nomad 30'
Join Date: Oct 2007
Posts: 18,743
|
Either of those two vehicles diesels Oliver?
My little blue car has a slipping clutch so not much power but more than an air cooled VW .. I think. The Honda has plenty of power. 180hp I think.
Re the thread a 4 stroke gas OB is too heavy so a diesel would be unthinkable. The Yanmar OB was ridiculously heavy and noisy. Very expensive too.
__________________
Eric
North Western Washington State USA
|
|
|
|
|
Thread Tools |
Search this Thread |
|
|
Display Modes |
Linear Mode
|
Posting Rules
|
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts
HTML code is Off
|
|
|
|
» Trawler Discussions |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|