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12-22-2016, 07:36 AM
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#21
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Guru
City: Toms River
Vessel Name: V E N T U R E
Vessel Model: 1996 36' Island Gypsy Classic
Join Date: Dec 2009
Posts: 1,361
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1800 4kw Kohler with Yanmar 2gm engine--approx. 500 hours.
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12-22-2016, 08:07 AM
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#22
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Guru
City: Owings, Md
Vessel Name: Graceland
Vessel Model: Mainship 34 MK1
Join Date: Jan 2016
Posts: 1,381
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Installed a 1800 rpm, 2 cylinder, yanmar driven generator in last spring made by Alpha, a small outfit out of Pompano Beach, FL. Less than 100 hours so far. No sound shield and it does vibrate more than a 3 cylinder but it fits the space, is easy to service and appears to be well constructed. It was a new, self install and the company owner's communication was supportive and prompt. The boat and bill's both belong to my father but it was about $7.5k including all supporting systems (fuel system, thru hulls, hoses, electrical) which is a bargain.
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12-22-2016, 08:58 AM
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#23
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Guru
City: Brookline, NH
Vessel Name: Shalloway
Vessel Model: Defever 44, twin Perkins
Join Date: Sep 2013
Posts: 2,260
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Northern Lights, 8K, 1800rpm, 3cyl, 450hrs.
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12-22-2016, 09:52 AM
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#24
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Moderator Emeritus
City: Chicago, IL
Vessel Name: Bay Pelican
Vessel Model: Krogen 42
Join Date: Oct 2007
Posts: 2,993
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Wow, only three have responded with significant hours on their generators. Argues against worrying about whether a 3,600 rpm or 1,800 rpm is the better fit for most boats.
__________________
Marty
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12-22-2016, 11:36 AM
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#25
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Guru
City: Tri Cities, WA
Join Date: Nov 2012
Posts: 4,406
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Westerbeke 15KW, 1500rpm, ~1800 hours
__________________
Mike and Tina
1981 Boston Whaler 13'
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12-22-2016, 11:53 AM
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#26
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Guru
City: Owings, Md
Vessel Name: Graceland
Vessel Model: Mainship 34 MK1
Join Date: Jan 2016
Posts: 1,381
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Quote:
Originally Posted by GFC
Westerbeke 15KW, 1500rpm, ~1800 hours
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It is probably 1800 rpm to provide 60hz unless your boat is wired for 50hz.
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12-22-2016, 11:56 AM
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#27
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Guru
Join Date: Jun 2008
Posts: 5,037
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Westerbeke 4.4 kw (2 cylinder) 1800 rpm, approx. 2400 hours
__________________
Jay Leonard
Ex boats: 1983 40 Albin trunk cabin, 1978 Mainship 34 Model 1
New Port Richey, Fl
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12-22-2016, 12:50 PM
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#28
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Guru
City: Cape May, NJ
Vessel Name: Irish Lady
Vessel Model: Monk 36
Join Date: Dec 2007
Posts: 4,964
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1800 westerbeke 8 BTD 2175 hrs. Approximately 1987 set. Recently pronounced doa with 265-275 psi compression in all three cyl. 50 psi below rebuild spec. Nothing but trouble for me in last 3 years. Gen end was rebuilt in 2013 with less than 100 hrs. Fairly quiet and smooth without enclosure when it ran. Not going WB again. Probably will part-out.
__________________
Archie
Irish Lady
1984 Monk 36 Hull #46
Currently in Cape May, NJ
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12-22-2016, 12:55 PM
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#29
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Guru
City: Duvall, Wa. USA
Vessel Name: Beach Music II
Vessel Model: 2003 Mainship 430 Trawler
Join Date: Aug 2014
Posts: 1,040
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Kohler 8 KW, 1800 RPM, 413 hours. 2003 boat and I've put more hours on it in two years than the two previous owners combined.
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12-22-2016, 01:27 PM
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#30
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Guru
City: Between Oregon and Alaska
Vessel Name: Charlie Harper
Vessel Model: Wheeler Shipyard 83'
Join Date: Jun 2016
Posts: 3,023
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2-14kw @1800 came with the boat. An Onan MDL3 and Perkins 4108. Both with glazed cylinders from light running. Perkins was no problem to overhaul, but Onan wants to sell a new one. I no longer have an electric stove, so planning on dumping the Onan for a much smaller generator. I will never have another Onan/Cummings product because of parts issues.
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12-22-2016, 01:37 PM
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#31
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Guru
City: Campbell River
Vessel Name: Okisollo
Join Date: Apr 2012
Posts: 783
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Hi,
3 cylinder, 1800 rpm, Yanmar 3GMD, 5.5 kw, no sound shield
hours? -- lots (no meter), but quite old.
engine designed (re: da book) for propulsion with raw water cooling,
heat probe 140f, can only find max of 160 or 165f, need 185f yo stop
alarm.
running on same keel cooler as main engine.
vibration and noise, very liveable.
Ted
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12-22-2016, 01:38 PM
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#32
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Guru
City: New England and Canada to Florida
Vessel Name: Tadhana
Vessel Model: Helmsman 38 Pilothouse
Join Date: Jul 2011
Posts: 596
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Onan Model MDKBH 5kW. Turns at 2900 rpm. That is correct, 2900 rpm. 8 seasons old, and 756 hours. Boat engines 8 years and 2800 hours. https://powersuite.cummins.com/PS5/P...ets/a-1475.pdf
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12-22-2016, 06:04 PM
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#33
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Guru
City: Bellingham WA
Vessel Name: Hatt Trick
Vessel Model: 45' Hatteras Convertible
Join Date: Nov 2016
Posts: 1,973
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Northern Lights 5kw, 1800 rpm. 10 years service, 1500 hours . No problems. Quieter without a sound shield than the old Onan I removed that had one.
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12-22-2016, 06:09 PM
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#34
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Senior Member
City: Tasmania
Vessel Model: Old Town Loon
Join Date: Jul 2015
Posts: 218
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11.5 kva Onan. 6 months old with 120 hrs on it and she runs at 1500rpm for 50 Hz.
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12-22-2016, 07:07 PM
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#35
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Senior Member
City: Baytown, Texas
Vessel Name: Islander
Vessel Model: Prairie 36
Join Date: May 2013
Posts: 290
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I have an Onan MDJE 7.5 kw paint shaker with 2500+ hours that still runs well. I do need to put some new mounts under it though to quell some of the vibes. Oh forgot to say, 1800rpm.
Kevin
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12-22-2016, 07:23 PM
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#36
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Senior Member
City: Gustavia
Vessel Name: Soler Fox
Vessel Model: Selene 62
Join Date: Apr 2016
Posts: 339
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A lot of Low RPM generator good ..
I notice really bing difference of noise (vibration frequency) form 1500 and 1800RPM
I really dont like high RPM get set, this is too much RPM for diesel engine.
I notice not so many hours on generators.
I love generator with Yanmar motor
Hugues
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12-22-2016, 07:27 PM
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#37
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Guru
Join Date: Jun 2014
Posts: 1,274
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Quote:
Originally Posted by 101TUG
A lot of Low RPM generator good ..
I notice really bing difference of noise (vibration frequency) form 1500 and 1800RPM
I really dont like high RPM get set, this is too much RPM for diesel engine.
I notice not so many hours on generators.
I love generator with Yanmar motor
Hugues
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Some diesels are happy running at 3600 rpm's. I once saw a Fischer Panda powered by a Farymann 2 cylinder diesel that had in excess of 5000 hours on it. The owner said it was an original engine and that it ran fine!
Bruce
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12-22-2016, 07:52 PM
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#38
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Senior Member
City: Gustavia
Vessel Name: Soler Fox
Vessel Model: Selene 62
Join Date: Apr 2016
Posts: 339
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Quote:
Originally Posted by Bruce B
Some diesels are happy running at 3600 rpm's. I once saw a Fischer Panda powered by a Farymann 2 cylinder diesel that had in excess of 5000 hours on it. The owner said it was an original engine and that it ran fine!
Bruce
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This panda need to go to museum that the only one I head running good for 5000H
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12-22-2016, 11:28 PM
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#39
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Senior Member
City: La Conner
Join Date: Jan 2013
Posts: 120
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Survey/ Generator who is 1800 and who is 3600RPM
7.5 MDJE. Est hours of 9000. Been looking for a new one over 15 years. Keeps running strong so why replace? Also use a Honda Eu2000. 900 hours on it in two years
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12-23-2016, 09:22 AM
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#40
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Guru
City: Carefree, Arizona
Vessel Name: sunchaser V
Vessel Model: DeFever 48 (sold)
Join Date: Apr 2008
Posts: 10,186
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Quote:
Originally Posted by Bay Pelican
Wow, only three have responded with significant hours on their generators. Argues against worrying about whether a 3,600 rpm or 1,800 rpm is the better fit for most boats.
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I quite like the idea of "low" genset hours. On vessels most of us are own it shows a well thought out on engine alternator, solar panels, inverters and battery system combination. We normally run the 1800 RPM genset about 1/3 of the hours as the mains. Now if I had a +70 footer carrying a crowd the genset hours would be way up there, likely matching or exceeding the mains.
Of course for those who sit at the docks the hours will be understandably "low" on both the mains and genset.
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