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Old 06-19-2016, 04:53 PM   #1
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Running on plane with genset running ok?

I have a 2004 Pilot 30 II with a Yanmar 315 and Next Gen 3.5kw.
I have never run an extended period of time at cruising speed with the genset running as well. I have only run for maybe an hour or so, and everything was fine.
Do you guys see any problem with running 5 or 6 hours at 17-18 knots while running the genset and air conditioner?
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Old 06-19-2016, 06:20 PM   #2
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none whatever.
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Old 06-19-2016, 06:21 PM   #3
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If sea water through hull and intake are designed right, absolutely no problem running gen on plane. Since it is a production boat from a well known brand, those details should be covered. Just once on plane go look at gen exhaust and make sure it is still spitting water.
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Old 06-19-2016, 06:31 PM   #4
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Do you guys see any problem with running 5 or 6 hours at 17-18 knots while running the genset and air conditioner?
Coming back from Catalina about 6 weeks ago,We were running at 15- 18 knots with the genny running for 5.25 hours with no problems. (I was not using the a/c, however.)
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Old 06-19-2016, 06:37 PM   #5
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It's better to have a reasonable load on the generator. Engines running generators for long hours at light load tend to glaze their cylinders/sleeves. Sometimes in 1000 hours.
Slower turning engines don't suffer from this as much. 1200 rpm engines have less trouble than 1800 rpm, etc.
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Old 06-19-2016, 06:57 PM   #6
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If they are in the same "compartment", keep an eye on ambient temps.
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Old 06-19-2016, 08:24 PM   #7
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I run mine while under way on a regular basis with no issues.
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Old 06-19-2016, 08:30 PM   #8
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An air conditioner going is plenty of load.
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Old 06-19-2016, 10:08 PM   #9
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We always run our generators and we're often on plane and faster than you're talking. They are just more engines and you certainly are running your main engine.
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Old 06-19-2016, 11:00 PM   #10
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Running on plane with genset running ok?

As the Scottish saying goes "A chance would be a fine thing". We have Lehman 120s.
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Old 06-19-2016, 11:37 PM   #11
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Quote:
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I run mine while under way on a regular basis with no issues.
Ditto!
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