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Bob142 04-06-2016 04:34 PM

Re: Portable Genny
 
If you decide that you need the extra power...I also recommend the 2000 Honda....

Don L 04-06-2016 04:49 PM

Re: Portable Genny
 
Quote:

Originally Posted by fishandships (Post 3426473)
Is it necessary to purchase a portable generator? If so, which would be the best? I heard Hondas are pretty good

No it isn't necessary. The Honda and Yamaha are the best. Don't get one till you have spent time on the boat and know the answer as to whether it is worth getting one for you.

Maine Sail 04-06-2016 05:14 PM

Re: Portable Genny
 
Quote:

Originally Posted by outbound (Post 3428545)
Maine-you live in Maine. I think you mostly cruise N.E. Think that has impact on your (quite educated) choices.

Ah yes where we get even less solar hours and where most boats reside only on moorings.....:wink

I also design and install energy management systems for a living, and do so for world cruisers as well as coastal customers. Many of them, whom I do work for, do not choose to have gensets either in-board or portable and they don't need them. The do just fine with a well designed system even without a generator. I also have a number of customers who leave the fridge running 24/7 on the mooring. While they do have LVD's installed it is pretty rare that they actually trip off at 12.1V / low voltage.

Omatako 04-06-2016 05:17 PM

Re: Portable Genny
 
Quote:

Originally Posted by Melrna (Post 3429121)
We like our Honda. Great for charging batteries when the solar cannot, when we need relief from the heat to put one AC on and run the odd 120 volt equipment. My Honda cost me $800 back on 2008. One can be had for about $1200 now. Inboard diesel generators cost upwards of $10,000-20,000 to put one in. Do the math.

If I had to respond to Outbound's post it would have been exactly the same as yours.

That said, I don't have a Honda gen but have friends that do and it is a good solution for emergency power as well as (as others have said) being great for running power tools aboard.

I went to great lengths "developing" a Fischer Panda gen set to drive two 12v alternators instead of the proprietary alternator. It worked really well on all the tests I did in the workshop. But I abandoned it recently because it was so heavy and had a huge space requirement. Could easily fit two Hondas into the same space and combined they would still be half the weight.

And my mate's Honda makes no more noise than did the FP.

But in the final analysis I agree with other posts, we have found ways to be energy-independent without the need for a gen set. We stripped our shore-power installation out five years ago and use a Xantrex inverter to run the small mains requirement we still have.

travlin-easy 04-06-2016 05:23 PM

Re: Portable Genny
 
I'm seriously considering this one from Harbor Freight, which has lots of rave reviews. The price is right, only 10 pounds heavier than the Honda, half the price, very quiet at 63 db. Inverter Generator - 4.7HP, 2500W Inverter Generator

Now, I have bad lungs from asbestos exposure when I was a kid in the Navy. When the humidity is very high and and the nighttime temperatures are above 80, I find it difficult to sleep because of the difficulty in breathing. That's why I have a heat pump on the boat, but there is a lot of time that I'm not tied to the dock, so the genset will solve this problem. Additionally, I spend most of my time on the water during the week when I have those secluded anchorages to myself. More often than not, there are no other boats within miles of me, so that 63 db engine sound will not be bothering anyone other than myself. Inside the cabin, 63 db is barely noticeable.

A couple years ago, when I sailed down the ICW in October, it was one of the coldest on record. That heat pump would have been a God send to me if I had a genset back then.

As for charging the batteries, no worries - my 100-watt solar panel does a great job of keeping the 4 T-105s topped off, even on cloudy days. However, the genset would be a nice backup, if needed.

The only thing I will have to do is construct a platform on the transom to hold the genset and keep the exhaust fumes out of the cockpit and cabin. That's not a problem. In fact, I may construct a platform that has a cover so the genset can stay in place all the time, and it will also be out of the weather.

All the best,

Gary :cool:

Maine Sail 04-06-2016 05:40 PM

Re: Portable Genny
 
Quote:

Originally Posted by basssears (Post 3429081)
I'll add carbon monoxide as very real hazard to contend with as well. But if you're not in marina may be only reasonable way to run power tools.


I have a US Government inter-agency document, consisting of cooperation between the USCG, National Park Service, National Institute for Occupational Safety & Heath, US Department of the Interior & multiple State agencies, covering boat related CO poisonings. The document runs 45 pages, is absolutely ALARMING. It includes far too many deaths of both children and adults due to gas generator use..

I put the use of these small portable generators, on boats, in the potential for DEATH, category. It's kind of like the guy who has not YET been caught or caused an accident drunk driving.

The real scary thing is the small percentage of boats operating these generators that don't have any CO detector or are using a land based unit and not a marine unit. I can literally count on one hand the number of boats that have Honda's stuffed into a lazarette that actually have a UL Marine Xintex or a Safe-T-Alert CO detector that have been tested to UL Marine standards.

EDITED: To remove potential dual-meaning wording that could be taken the wrong way.

guitarguy56 04-06-2016 06:37 PM

Re: Portable Genny
 
That is sort of unfair Mainesail to indicate this is one for the Darwin Awards.... far more ridiculous things people do on boats that FAR exceeds the use of a simple Honda generator.

Responsible use of the generator is of course paramount and I as a user of a Honda generator know the use and the hazards.

I would not venture out for more than two days on our boat without the Honda in it's trusty location not only for emergency use but also for pleasure use while off the boat on some remote beach location for electrical needs whatever they may be.

Having the use of the small generator regardless of the make is a personal choice and not one for others to attack or ridicule. I've had mine for over two years and have yet to use it on the boat but have taken it for use camping or during blackouts in our neighborhood.

outbound 04-06-2016 07:55 PM

Re: Portable Genny
 
Will agree every once in awhile nice to run the AC. But otherwise agree with everything Maine says. Respect his verdict as usual.

So it's hot, drizzly and humid with no wind ok to run the Honda outside. Will it keep up with the tv, AC and other toys you use on those dreary days.
So it's nowhere near time to take the AP offline but there's spray, some green water and its rolly poly. Ok to run the Honda on deck.
I don't know if it's safe to run them below deck without considerable planning and I don't know if they are safe to run underway.
Accept I maybe wrong on this one but still think a dedicated diesel unit is safer and more practical.
Back to sanding 2000e. Breaks over.

ReefMagnet 04-06-2016 08:08 PM

Re: Portable Genny
 
It depends on your charging vs power draw differential after considering alternatives.

On our boat with electric refrigeration, soon to be installed 12V watermaker and lots of electrical gadgets and limited space for extensive solar panels and where we avoid using the motor as much as possible we run a Honda 1000 genset to a 50 amp charger for four hours every 3 or 4 days or so to keep the batteries topped up. We rarely use any AC powered equipment so the genset is essentially for charging purposes only. And. if you really do need one, buy the Honda or Yamaha. Most cheap copies are unreliable and NOISY. Noise levels double with every 3 dB increase, so keep that in mind when comparing specs. Our little Honda cannot be heard more than 10 metres from the boat in a breeze and we only ever run it between mid morning and mid afternoon.

As for Darwining oneself off using a portable genset on a boat I'd have to say that if one was that stupid, they'd most likely have Darwin'd themselves off long before being in a position to buy and own a boat in the first place. Not saying it doesn't happen, but I'd guess no more so than people blowing themselves up with gas appliances on board. It doesn't need much common sense to place the generator in a location that eliminates CO poisoning risk to the boat's occupants. If you're planning to run your genset overnight, however, do not run a portable unit.

travlin-easy 04-06-2016 08:34 PM

Re: Portable Genny
 
I don't think it makes a bit of difference whether the exhaust gasses are created by diesel or gasoline - both are just as deadly. Explosive - only if you do something really stupid, like refueling while it's running. Same as refueling an alcohol stove canister right after you put it out - BOOM!

From my point of view, the Darwin award should go to folks that climb to the top of their mast - I wonder how many people have been killed or injured doing that? I suspect it's a fairly long list as well.

I continually read posts about the danger of a gasoline engine on a sailboat, which drives me nuts. There are thousands upon thousands of gasoline powered sailboats in this country, and in more than 60 years of being on the water, I've never seen one blow up or catch on fire. However, I have witnessed three diesel powered boat fires. All but one burned to the water line. A few months ago, on the TV series Deadliest Catch, one of the crab boats had an injector line blow. The entire engine compartment filled with diesel fumes that were so dense, you could barely see more than 10 feet in the lighted compartment. The engineer, was afraid to press the mic key on the intercom, claiming the tiniest spark could have blown the boat to smithereens. He had to wear a SCUBA rig to work on the problem because the gasses were so deadly. They eventually were able to evacuate the diesel fumes using a huge fan that did not have brushes on the fan motor.

I have had an explosive gas detector on my boat since the day I purchased it. It detects all explosive gasses, including the gasses emitted from charging the boat batteries. It works very, very well, and I tested it using a propane cigarette lighter held about 4 feet away and just pressed the trigger enough so the gas would escape, but not ignite. I held it for about 5 seconds and the alarm went nuts. I had to put a switch in the system so I could turn it off when charging the batteries with the onboard charger - the damned thing would fire off in the middle of the night and wake everyone in the adjacent condos.

I just looked at the study Mainsail talked about, and apparently, the vast majority of those deaths occurred when people fired up gasoline generators in their garages, basements and homes during power outages. Here is an exert from that study: ASHRAE Journal, Sept, 2014, Vol.56(9), p.92(4) [Peer Reviewed Journal]
Description: Concerns exist about the hazard of acute residential carbon monoxide (CO) exposures from portable gasoline-powered generators, which can result in death or serious adverse health effects. As of April 23, 2013 and as shown in Figure 1, the U.S. Consumer Product Safety Commission (CPSC) databases contain records of at least 800 deaths (involving 597 incidents) from CO poisoning caused by consumer use of a generator in the period of 1999 through 2012. (1) Typically, these deaths occur when consumers use a generator in an enclosed or partially enclosed space or, less often, outdoors near a partially open door, window or vent. While avoiding the operation of such generators in or near a home would reduce indoor CO exposures significantly, it may not be realistic to expect such usage to be eliminated completely.

All the best,

Gary :cool:


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