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Propane or Alcohol Stove?

20K views 61 replies 23 participants last post by  L124C 
#1 ·
I am soon to buy a new stove for the boat. I know the pro's and con's for propane, but would like to hear anyone's comments on the Origo 3000 or 6000 alcohol fueled stove, stove/oven. As far as I know the only downside seems to be they don't burn quite as hot as propane. But I would like to hear of any "real world" experiences of the units. Oh, and the unit would be gimbaled as I have a sailboat.
Thanks
 
#2 ·
I could tell you a story about how my friend's alcohol stove leaked into the bilge of his Pearson 33, then caught on fire when he attempted to light the burner . . . but I won't.

We use propane for our oven/stove and hot water heater and would not change to anything else.
 
#3 ·
Alcohol can be exciting

We had an alcohol stove for a few years. We were advised to take the burner into the cockpit to fuel it before lighting it back in the galley. It was sometimes tricky to tell if it was actually lit. Then I've heard of interesting experiences with the pressurized alcohol stoves.

A few years ago I took a captain's course in the middle of the winter. The instructor had a great story about lighting an alcohol stove and catching himself on fire. He had to jump overboard and immerse more than once to douse all of the flames.

I suppose there are horror stories for CNG (our boat) and propane, but I haven't heard any. I've also seen small butane stoves. It has been said that the difference between propane and CNG is that propane blows up the bilge and CNG blows up the cabin top. Though CNG is much harder to get even in the US, I like the idea that it can at least in theory leak out of the top of the boat instead of lurking in the bilge.

In any case, I don't miss the alcohol stove on our first boat.
 
#5 ·
Thanks, my last stove was pressurized alcohol and I had the thing flare up once or twice, scary. The point of the Origo is that it's not pressurized and touted as the safest way to cook on a boat, I just wondered if anyone out there has experience of them. Else I'll probably go with propane, just not in love with having to build containers for pressurized "bombs" or the option of having them hang of a stantion.
 
#8 ·
I have used an Origo for the past 16 years. I love these stoves, simple, reliable, cheap to run. The stove tops don't appear to heat things any slower than your average marine propane stove. I have not used the oven much and so won't comment. There is a good thread on www.Cruisersforum.com on Origo's. There is also a guy on that same board looking to buy a used pressure alcohol stove.

There are tricks to the Origo like any other stove. I bought one of those small liquid stove fuel bottles with a pour spout at a camping supply place and that greatly simplifies the filling process and makes it bullet proof reliable. Also some burners come with to small an furling indent in the screen. I carefully push the screen down so that the indent is about a 1/4" deep and the size of a quarter and that also simplifies fueling. I use hardware store alcohol which is cheap and does not soot which is not true of the high price stuff that Origo recommends.

For me this is a no brainer. In my life the only sailboats that I personally have known of that have blown up had diesel engines and propane stoves. I can never understand how there are people who refuse to have gasoline engines because of the danger but will calmly live with propane. I have spent too many sleepless night nervously tracking down for propane leaks.

Respectfully,
Jeff
 
#9 ·
Having owned both...there is no contest between propane and alcohol for cooking. Propane is way better. As for risks...I suppose propane poses the greatest risk but this can be managed with good design for tank storage and "sniffer". When you are cooking every day...you appreciate the ease of propane.
 
#10 ·
Propane stoves are generally much better at cooking, and far safer, provided you have a propane fume sniffer on the boat, and take the proper precautions.

Origo stoves, while pretty nice, don't seem to generate as much heat as propane stoves do, and the fuel is a bit more expensive. Alcohol fires are really dangerous since the alcohol can float on top of water and still be burning, and the flames are nearly invisible.
 
#11 ·
There it isn't

sailingdog said:
... Alcohol fires are really dangerous since the alcohol can float on top of water and still be burning, and the flames are nearly invisible.
That would explain my instructor's multiple dunking to douse his flames. He also reported seeing flames under water. Maybe that was the surface on fire.

We've probably all seen a formula race car driver after a crash hopping and rolling around as if on fire but without visible flames.
 
#12 ·
Yup... they're hopping and rolling, because even if they can't see the fire...they can feel the heat...
 
#13 ·
A close friend and I were anchored in our separate boats off Fort Adams 2 seasons ago, to watch the Newport Folk Festival. My wife and our two 20-something kids were on True Blue, close by his 25 y/o Pearson 33, while he and his party guests got pretty wasted during the course of the afternoon.

Close to 5:00 pm, he decided to cook some food, pumped up his pressurized tank, but was distracted by the encore performance and went up into the cockpit. Apparently, his valve was open before he pressurized the tank - overflowing the burner cup and sending alcohol fuel down into his bilge.

No one knows for sure how much time passed before he attempted to pre-heat the burner. But when he did, the flame ignited the burner and quickly spread down into his bilge. Flames began to melt the fiberglass interior hull and ignited the wood sole, cushion fabric, cabinets and bulkheads. As the hundreds of anchored boat people watched, black smoke & flames were blazing from the ports & companionway, while most of the guests jumped off the boat. The captain and a friend however, stayed onboard and eventually put the flames out with water & flour - only after pulling up every floor board.

The boat was nearly totaled, took 2 years to restore, and is still unfinished. The owner since then, installed a propane system to current ABYC safety standards. Modern alcohol stoves may be safer today, but onboard alcohol as a cooking fuel is still terrifying to me. I have yet to hear about a propane fire in this area, but plenty of alcohol fires occur each year - including one we had on a former boat.
 
#62 ·
Huh?

A close friend and I were anchored in our separate boats off Fort Adams 2 seasons ago, to watch the Newport Folk Festival. My wife and our two 20-something kids were on True Blue, close by his 25 y/o Pearson 33, while he and his party guests got pretty wasted during the course of the afternoon.

Close to 5:00 pm, he decided to cook some food, pumped up his pressurized tank, but was distracted by the encore performance and went up into the cockpit. Apparently, his valve was open before he pressurized the tank - overflowing the burner cup and sending alcohol fuel down into his bilge.

No one knows for sure how much time passed before he attempted to pre-heat the burner. But when he did, the flame ignited the burner and quickly spread down into his bilge. Flames began to melt the fiberglass interior hull and ignited the wood sole, cushion fabric, cabinets and bulkheads. As the hundreds of anchored boat people watched, black smoke & flames were blazing from the ports & companionway, while most of the guests jumped off the boat. The captain and a friend however, stayed onboard and eventually put the flames out with water & flour - only after pulling up every floor board.

The boat was nearly totaled, took 2 years to restore, and is still unfinished. The owner since then, installed a propane system to current ABYC safety standards. Modern alcohol stoves may be safer today, but onboard alcohol as a cooking fuel is still terrifying to me. I have yet to hear about a propane fire in this area, but plenty of alcohol fires occur each year - including one we had on a former boat.
A few questions: If the burner was open, how did he achieve the required pressure when filling the system? Wouldn't happen on my pressurised alcohol stove. I would see I wasn't getting to 20lbs, and know something was wrong. Why didn't he smell the fumes when he entered the Galley to light the stove? This much alcohol in the Salon of a boat is going to have a significant odor. If it doesn't, the alcohol has evaporated already (which it does fairly rapidly). On my stove, you would have to pour at least two gallons of fuel onto the burners to allow it to flow down, fill up the bottom of the oven, overflow the containment pan below the stove, and flow into the bilge. No offense to your friend, but I believe your example is not an indictment of pressurised alcohol stoves as much as it is skippers who don't use common sense. He could have made similar mistakes with Propane, and everyone could have been BLOWEN off the boat! Quite simply, you have to pay attention when working with ANY fuels on a boat. Given the nature of the event and mistakes made, I wonder if the problematic alcohol wasn't in the stove at all, but in the Skipper!:p
 
#14 ·
Propane generally doesn't result in fires...but does result in explosions. There was a thread previously which talked about CNG, which is mostly Methane, Propane and Butane, and Butane is probably the least safe of the gases used in cooking systems... CNG is the hardest to get, and requires a different burner from propane and butane, which can generally be interchanged fairly safely.
 
#15 ·
question: when does a boat sound like a dog ?

answer: when you fill the bilge with alcohol and light the stove -- woof !;)

Sorry I couldn't resist.

TrueBlue, at least it sounds like nobody was hurt in the P33 alcohol fire story and I certainly hope that is the case.

TrueBlue said:
...I have yet to hear about a propane fire in this area, but plenty of alcohol fires occur each year - including one we had on a former boat.
In the propane case it's probably more of an explosion followed by some fire. I use CNG for the galley, but the tank is in the starboard locker which I'm not happy about. I'm planning on moving it to a new much smaller volatiles locker on the port side which is top and bottom vented and glassed out of the interior boat spaces. I carry two of the small coleman propane cylinders in the cockpit for the rail grill. I know that they often can leak after being used but at least the propane can pass down thru the cockpit drains. I'm making a pvc tube to store them on the rail away from some foot level inner cockpit portlights.

Then I'll never forget the story from "Total Loss" (great book !) in the fire section about a British captain with a gasoline inboard engine who said that he pressed the starter button one morning while his wife was making tea and the boat blew up around them. The next thing he remembered is his wife was yelling and hopping around on her uninjured leg, although he couldn't hear her right away. She had only minor injuries and they made it ashore in a smoldering dinghy in time to see the rest of the vessel destroyed (prerequisite for inclusion in "Total Loss").
 
#16 ·
BoatUS insurance just put out a nice book that talks about the different ways boats are lost. A remarkably high percentage sink at the dock.
 
#17 ·
What confounds me is how simple and hot the Origo is and how difficult and cold the pressurized alcohol. Pressurized alcohol is plain stupid. I would even go so far to say they aren't even a heat source, at least it feels that way when trying to boil water. The only problem I have had with the Origo stoves is the quality of fuel. Poor quality fuel causes my eyes to burn a little and require opening up the cabin a bit for some air flow. I would rather keep it closed up on a cool morning. Most people have no experience with non-pressurized stoves like the Origo so tend to be negative about them just because they use alcohol. No propane tanks to mess with and inherently safer than pressurized alcohol or propane.
 
#18 ·
I have used an Origo non-pressurized stove, but prefer the ease and simplicity of propane stoves. For people not used to an Origo alcohol stove, getting the hang of it can be a problem. Propane is far simpler to adjust to, as many have some experience with either natural gas in the home or propane equipment from camping or a backyard barbeque grill.

My main objection to alcohol stoves, including the Origos, is the cost of the fuel and the danger of the fuel source.

It is pretty easy to spill alcohol and not notice it—especially on a moving sailboat, where the angle of heel and boat's motion can easily cause the spill...and the flames are almost invisible, so you might have a small alcohol fire burning in an out of the way place, like having the fuel floating on water, which happens quite frequently, and not notice it immediately.
 
#19 ·
Thank you all for your input. I'm still undecided which way to go, but really appreciate Jeff's comments as they mirror my thoughts/fears on safety. I realize any system is only as safe as the attention given to it, but am attracted to the minimal components of using alcohol. I liveaboard and cooking is important to me. Thanks again everyone.
 
#20 · (Edited)
Who ever it was that said that Alcohol can float on the water clearly does not know a thing about alcohol. Alcohol readily mixes with water and adding water immediately extinguishes it. Geez, I hate seeing misinformation on alcohol.

The alcohol used in stoves is completely different than the methyl alcohol used in race cars and beyond that most race cars that use alcohol use a mixture of methyl and gasoline which is what makes them so volitile and the flames next to invisble.

The story about the burning boat really surprises me. It would take a lot of alcohol to that much damage. More than would normally be present in a normal pressurized stove tank. Any mixture of water and alcohol, except for something approaching straight alcohol will not ignite. (It is my understanding that as little as 12% water content makes alcohol next to impossible to ignite.) so the simple expedient of throwing a couple glasses of water in the bilge should have put the fire out, that is unless other combustible materials were present. A hand pumped flower mister makes a very effective alcohol fire extinguisher. Most of the P-33's originally had gasoline engines so your friend is a really lucky man to still be here.

Speaking of things that actually do go boom in the night, how many of you carry small quantities of mineral spirits or other paint thinners in their cabin's. Just a thought.

Respectfully,
Jeff
 
#21 ·
Jeff_H said:
. . . "The story about the burning boat really surprises me. It would take a lot of alcohol to that much damage. More than would normally be present in a normal pressurized stove tank." . . ."so the simple expedient of throwing a couple glasses of water in the bilge should have put the fire out, that is unless other combustible materials were present. Most of the P-33's originally had gasoline engines so he is a really lucky man to still be here."
Jeff,
His P33 had a new Yanmar diesel and aside from some 1st & 2nd degree burns, he survived to tell the story - many times I might add, since he's my slipmate. I can't answer for Sdog's floating alcohol theory, but as was described in my story, several combustables were involved in the fire as well as ample time for the alcohol to become absorbed in the galley cabinetry before settling in the bilge. I don't know the size of the tank, but I would suspect it held at least a qt, enough to cause significant damage to a boat's cabins.
 
#22 ·
Just for the record, I was not doubting the veracity of your story. I was just surprised by the extent of the damage. Back in the pressure alcohol days, I had a couple alcohol fires and they were easily extinguished so was more than a little surprised to hear the extent of the damage. Most of the older pressure alcohol stoves held much less than a quart, with my old Homestrand holding just about a pint. Exept for the really old ones, by the 1970's alcohol stoves had a catch pan that held nearly as much as the tank. Because alcohol evaporates so quickly even soaking into the fabrics and down into the bilge like that is a little surprising. I don't doubt the story at all, but is quite different than my experiences. Given the gents state of sobriety, I almost wonder whether he didn't leave the alcohol container open and spill it's contents as well.

Jeff
 
#23 ·
He and his crew were inebriated, to say the least. They set a very bad example that day and I am sure he has constrant remorse over the event. What surprises me the most is he regularly crews on Courageous, US28, which just won the 12 meter regatta last month. I always respected his judgement until that bout with stupidity.

I am sure modern alcohol stoves are very safe, giving proper respect and maintenance by the users - typical for all flamable fuels, liquid or gaseous.
 
#24 · (Edited)
Jeff_H said:
Who ever it was that said that Alcohol can float on the water clearly does not know a thing about alcohol. Alcohol readily mixes with water and adding water immediately extinguishes it. Geez, I hate seeing misinformation on alcohol.
Float was the wrong word to use. The issue was brought up in a case study in BoatUS's book Seaworthy, where an owner had tried to put out an alcohol stove by pouring water on the flames, and the water only diluted the alcohol, but not sufficiently to put it out.

Adding water does not immediately extinguish alcohol fires, if not enough water is used. The water then carried the still burning alcohol down and behind the stove and the hull caught on fire from the burning alcohol. The story is on page 89 of the book. Alcohol will generally still burn until it is below 40% or so by volume. Most alcohols, including ethanol burn with little color to the flames.

Denatured alcohol, which is probably what you use, is mostly ethanol with a bit of methanol mixed into it. The MSDS clearly states the following for extinguishing alcohol fires.

Extinguishing Media: Use water spray, CO2, alcohol-type or universal-type foams, or
dry chemical. Water may be ineffective.

Please note that it clearly states that WATER MAY BE INEFFECTIVE.

That said...non-pressurized stoves, like the Origo, the OP is asking about, are far safer than the older pressurized stoves. However, alcohol does present its share of dangers, as do any flammable liquids on a boat. I do have a few solvents on-board, but they are stored in a water-tight/air-tight container and I don't open the container unless I've brought it up to the cockpit or on deck as a general rule.

One point about the dangers of alcohol stoves had more to do with their unfamilar practices, rather than the dangers of the fuel itself. Lighting a propane or butane stove is something that is probably fairly familiar for most sailors, especially if they have a gas stove or barbeque grill at home. Lighting an alcohol stove is not.
 
#25 ·
Alcohol

I Got A Good Deal On My Boat Because Of Alcohol. The Previous Owners "friend" Was Using A Single Burner Origo And Caught Herself And The Boat Interior On Fire. Witnesses Said She Saw The Headliner On Fire And Didn't Realize That She Was Also On Fire. She Jumped Overboard And Bystanders Pulled Her Out And Extinguished The Fire. The Story Is That There Was More Alcohol In Her Than In The Stove. I Have Converted To Propane With Sniffers And Properly Vented Tanks, But Am Still Very, Very Careful. Stoves And Firearms Don't Mix Well Together.
 
#26 · (Edited)
volatile inventory

Jeff_H said:
...Speaking of things that actually do go boom in the night, how many of you carry small quantities of mineral spirits or other paint thinners in their cabin's. Just a thought.

Respectfully,
Jeff
We banished such things from the cabin from the beginning, except for the lamp oil in the hanging Weems & Plath brass lantern that we lifted from our first boat several years ago. To refill the oil is brought from home and then returned.

When I was growing up we had a nasty basement fire when lawn mower parts were being cleaned with gasoline in a coffee can on the workbench. When the hot water was turned on upstairs the fumes flashed back from the instant hot water gas furnace ten feet away and pretty soon half of the basement was on fire. Even the hamsters and guinea pigs had to be evacuated, but the house was saved. I lost a dozen model rocket parachutes hanging 30 feet away from the flames. That left quite an impression on me with respect to volatiles.

Maybe the proof of the Tequilla in the cabin liquor cabinet is high enough to be flamable but that needs to be aboard to maintain crew morale ;)
 
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