Originally Posted by Minnesail
I can see that the colorless flame thing could be an issue. We have a simmer burner on our range that has an almost invisible flame and I have been known to leave it on overnight until my wife notices it the next morning.
It's been a long time since I've taken chemistry, but you'd think you could add something to the fuel to give it a color. Dose it with a little borax or something.
i wonder if the comments about invisible flames refer to Pressure Alcohol stoves? I have heard that before and do believe it... but our Origo flame is Always yellow/Blue and never difficult to see, no matter what height it burns.
As for the invisible problem - yup - it's real and a friend of mine had to abandon a sailboat in Commencement Bay (Tacoma, WA) many decades ago when a sailboat he was crewing on had a galley fire fed by a pressurized alcohol tank. He said that no one saw the spreading flames until the fire was well going and everyone jumped to nearby boats and the boat itself then burned up.
Evidently the fire started with a faulty hose connection on the back of the stove that somehow ignited.
Considering how little attention some folks pay to their galley fuel systems - propane or pressure alcohol - I can imagine how such problems might happen. Scary stuff.
As I said before, the Origo design has merit for it's simplicity and basic safety. Having said all that, NO combustable fuel will ever be 100% safe for all users all of the time.
BTW, don't know if this horse is thoroughly dead yet, but he's not movin' much!