Reply
 
Thread Tools Display Modes
 
Old 08-26-2013, 03:22 PM   #1
Newbie
 
City: Austin, TX
Country: USA
Join Date: Aug 2013
Posts: 2
Diesel Genset (yet another dumb newbe question)

The wife and I are shopping for a Trawler instead a Sea Ray 34 -38 which is the norm found on the lake we are on. We plan to keep it on the lake for a couple of years until we retire and can move it down to the Texas coast. Our ambition is to do the loop.

On the lake, ALL the boats in the circle of friends we plan to raft up to on weekends have cruisers with gasoline gensets. How bad do diesel's smell? I mean or we going to run everyone off or better yet or they going to run us off? Are they a lot louder? I would think maybe so.

Our other thought is to purchase a gasoline 7kw genset and have a 20 gal gas tank installed and then reinstall the diesel on down the road when we move the boat down to the Gulf.

Seems like it makes more since to buy the type of boat we ultimately want instead of buying a cruiser for 2 or 3 years, loose money and then buy a trawler. Mean time we work most of the bugs out of the Trawler and really get to know it.

Any advice or ideas are welcomed!
__________________
Advertisement

__________________
Occasionally/often frustrated; ...never defeated...
B_rad is offline   Reply With Quote
Old 08-26-2013, 03:35 PM   #2
Guru
 
ranger42c's Avatar
 
City: Maryland
Country: USA
Vessel Model: 42' Sportfish
Join Date: Aug 2013
Posts: 3,159
Smaller gas gensets often run at 3600 RPMs and more torque-y diesels tend to run at 1800 RPMs so sometimes (in my experience) diesel is quieter than gas. Sound shields can mitigate direct engine noise, too. Sometimes exhaust noise is exacerbated by poor exhaust outlet placement, and raw water flow (splashing) can be noisy in some implementations, too -- not the gas or diesel question.

Assuming the genset motor is well maintained, your fuel fittings aren't leaking, and you didn't spill diesel on your last filter change... no smell.

If everyone on the raft is running a genset, I would bet no one will notice yours is diesel.

Pay attention to carbon monoxide (CO); the raft's gas gensets can kill you... so ventilation (and mitigating the station wagon effect) is critical. You can more likely run your diesel genset all night (if you and friends can stand listening to any kind of genset all night long).

-Chris
__________________

ranger42c is offline   Reply With Quote
Old 08-26-2013, 03:38 PM   #3
Guru
 
Edelweiss's Avatar
 
City: PNW
Country: USA
Vessel Model: 1976 Californian Tricabin LRC
Join Date: May 2011
Posts: 1,834
If you are buying a diesel boat then stick with a diesel generator. Ease of operation, safety and cost of operation. I don't know what boat you're looking at, but my boat doesn't have the gas fire safety rated equipment (sealed alternators, starters to name a few) in the engine room to support the safe operation of a gas generator. They're not required since it's a diesel. When we raft with another boat, we usually try to keep the exhaust outlets on the opposite side of the raft. But they don't run all the time, produce very little smell and run quiet.

The smell of burned gas isn't very pleasant either and the fumes from a gas engines exhaust contains carbon monoxide (CO) which is quite dangerous on an enclosed boat.

So I would say it's at the very least a draw. But overall I would still favor a diesel anyway.
__________________
Larry B
Careful . . .I Have a Generator and I'm not afraid to use it !
Edelweiss is offline   Reply With Quote
Old 08-26-2013, 03:48 PM   #4
Guru
 
City: Fort Myers
Country: USA
Join Date: Jul 2013
Posts: 956
The diesel smell myth usually comes from gas boat owners. As others have said I find the low rpm diesel gen's a lot quieter.
Marlinmike is offline   Reply With Quote
Old 08-26-2013, 03:55 PM   #5
Senior Member
 
HeyJude's Avatar
 
City: Boerne, Tx
Country: USA
Vessel Name: HEY JUDE
Vessel Model: Kadey Krogen 36 Manatee #46
Join Date: Jan 2011
Posts: 220
B_rad...we're on LT & from 2005 to 2012 had a SeaRay340 with gas gen. in 2011 we bought the only full displacement trawler on LT, a KK36 Manatee, with a diesel gen (same kw) so I've experienced fumes from both & would much rather be downwind of our diesel than the gas. The rpm are half, the noise almost non-existent & the fumes not near as lethal.

What do you have on the lake now & good luck with your trawler search.
__________________
HEY JUDE, a 1986 Kadey Krogen 36 Manatee, #46 of 99. After 13 yrs on Lake Travis she's on Clear Lake TX being prepped for coastal cruising.
HeyJude is offline   Reply With Quote
Old 08-26-2013, 05:44 PM   #6
Guru
 
Alaskan Sea-Duction's Avatar
 
City: Inside Passage Summer/Columbia River Winter
Country: USA
Vessel Name: Alaskan Sea-Duction
Vessel Model: 1988 M/Y Camargue YachtFisher
Join Date: Jul 2012
Posts: 3,148
Well you could put this on the bow, wrap a chain and lock around it......

__________________
1988 M/Y Camargue Yacht Fisher
Alaskan Sea-Duction
MMSI: 338131469
Blog: http://alaskanseaduction.blogspot.com/
Alaskan Sea-Duction is offline   Reply With Quote
Old 08-26-2013, 06:22 PM   #7
Guru
 
Codger2's Avatar
 
City: San Diego
Country: US
Vessel Name: "Sandpiper"
Vessel Model: 2006 42' Ocean Alexander Sedan
Join Date: Oct 2007
Posts: 5,420
Quote:
Originally Posted by Alaskan Sea-Duction View Post
Well you could put this on the bow,

I agree that diesel generators are the best but they come at a considerable cost. I'd go (and am going) the Honda EU 2000 route until the type of boat is finalized.
__________________
Codger2

My passion for improving my boat(s) exceeds my desire to constantly cruise them.
Codger2 is offline   Reply With Quote
Old 08-26-2013, 08:26 PM   #8
Guru
 
SCOTTEDAVIS's Avatar
 
City: Vero Beach, FL.
Country: US
Vessel Name: FIREFLY
Vessel Model: Pilgrim 40
Join Date: Nov 2012
Posts: 913
I have heard (please correct me if I'm wrong) but diesels produce a fraction of the carbon monoxide of gas engines and are much safer from that standpoint.
SCOTTEDAVIS is offline   Reply With Quote
Old 08-27-2013, 05:34 AM   #9
FF
Guru
 
FF's Avatar
 
Join Date: Oct 2007
Posts: 16,525
If you eventually plan on long range cruising , with loads of anchoring out , the best plan is to outfit the boat over time so it does not require endless hours of noisemaker.

A good sized batt set and quality refrigeration will allow you to recharge every other day with ships movement from the main engine , with a replacement alternator and v regulator..

If you prefer longer time on the hook, all propane systems will allow weeks to months of independance.

The new Honda inverter noisemakers are able to start an air conditioner and are very quiet with good service life. They can be paralleled if required.
FF is offline   Reply With Quote
Old 08-27-2013, 07:47 AM   #10
Guru
 
Keith's Avatar
 
Vessel Name: Anastasia III
Vessel Model: Krogen 42
Join Date: Oct 2007
Posts: 2,716
Both diesel and gas engines produce CO. Both can be dangerous.
Keith is offline   Reply With Quote
Old 08-27-2013, 09:30 AM   #11
Guru
 
motion30's Avatar
 
Join Date: Jan 2010
Posts: 740
I have found gasoline gensets are much quieter but the C
0 can really do a job on you
motion30 is offline   Reply With Quote
Old 08-27-2013, 09:34 AM   #12
Guru
 
psneeld's Avatar
 
City: Avalon, NJ
Country: USA
Vessel Name: Freedom
Vessel Model: Albin 40
Join Date: Oct 2011
Posts: 15,903
http://www.trawlerforum.com/forums/s...tml#post175759

Is carbon monoxide a problem with diesel engines? Usually not, although any engine, including diesel, produces CO when combustion is incomplete. Diesel (compression ignition) engines run with an excess of air and often produce less than 1200 ppm CO. When diesel fuel is burned incompletely or when overloaded and over-fueled (rich mixture), diesel engines will produce high concentrations of CO. Diesels usually pollute the air with particulates and nitrogen oxides, not CO.

http://www3.abe.iastate.edu/human_house/aen206.asp


While usually less of a risk...still a risk....
psneeld is offline   Reply With Quote
Old 08-27-2013, 11:40 AM   #13
FF
Guru
 
FF's Avatar
 
Join Date: Oct 2007
Posts: 16,525
Simplest is to install a davit on the rear and hang the noisemaker up out of the way.

A modern quality gas unit will not wake the anchorage and the rotten ethanol fuel hassles easily handled with OB 6 gal gas tanks as the supply.

Plug it in with your std power hose and no complex costly electric switching is required.
FF is offline   Reply With Quote
Old 08-27-2013, 12:29 PM   #14
Guru
 
Alaskan Sea-Duction's Avatar
 
City: Inside Passage Summer/Columbia River Winter
Country: USA
Vessel Name: Alaskan Sea-Duction
Vessel Model: 1988 M/Y Camargue YachtFisher
Join Date: Jul 2012
Posts: 3,148
Wow! Had this been posted on another boat website (Who says Sea Ray Owners are snobs) they would have attacked the OP when even mentioning a honda genny. They would state he would be dangerous to himself, the crew and anyone within 100 miles! I think I will like being part of the slow boat crowd....
__________________
1988 M/Y Camargue Yacht Fisher
Alaskan Sea-Duction
MMSI: 338131469
Blog: http://alaskanseaduction.blogspot.com/
Alaskan Sea-Duction is offline   Reply With Quote
Old 08-27-2013, 12:52 PM   #15
Master and Commander
 
markpierce's Avatar
 
City: Vallejo CA
Country: USA
Vessel Name: Carquinez Coot
Vessel Model: 2011 Seahorse Marine Coot hull #6
Join Date: Sep 2010
Posts: 10,262
I'd be more concerned with being left behind in the wakes of your Sea Ray friends than the sound/smell of your diesel genset.

__________________
Kar-KEEN-ez Koot
markpierce is offline   Reply With Quote
Old 08-27-2013, 01:03 PM   #16
Newbie
 
City: Austin, TX
Country: USA
Join Date: Aug 2013
Posts: 2
Quote:
Originally Posted by markpierce View Post
I'd be more concerned with being left behind in the wakes of your Sea Ray friends than the sound/smell of your diesel genset.
Not too worried about being left behind. At over 5 bucks a gallon on the lake, they won't be at the lake as often to hear or smell anything...besides, the wife sort of likes the privacy.
__________________
Occasionally/often frustrated; ...never defeated...
B_rad is offline   Reply With Quote
Old 08-27-2013, 01:42 PM   #17
TF Site Team
 
Pau Hana's Avatar


 
City: Seattle, WA
Country: Good Ol' US of A!
Vessel Name: Pau Hana
Vessel Model: 1989 PT52 Overseas Yachtfisher
Join Date: Aug 2012
Posts: 1,647
Go diesel and be done with it. Our 12kw is quiet- the only thing you hear outside is the water outlet. Inside, there's a low rumble, but nothing that precludes normal conversation.
__________________

__________________
Peter- Marine Insurance Guru & tuna fishing addict!

1989 52' PT Overseas yachtfisher
Pau Hana is offline   Reply With Quote
Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off





All times are GMT -5. The time now is 01:41 AM.


Powered by vBulletin® Version 3.8.8 Beta 4
Copyright ©2000 - 2017, vBulletin Solutions, Inc.
Search Engine Optimization by vBSEO 3.6.0
Copyright 2006 - 2012