Global economic situation for liveaboard cruising yachties

Heinz, Nice to hear from you again, I always liked to read your posts, very informative (usually anthow, others are just responses to "tools".......)

 

I played doctor with a Colombian does that count and I payed no postage at all, she was here for an education anyway. We both graduated but we had to really study each other hard.

 

That is not completely correct, it depends! NG can have the same (or almost the same) calorific value than the LPG mixes! Depends on the source of NG and the mix of LPG. In Europe are at least 20 car models with NG, complying with the rules. (OTS, not tinkered)

Regards
Richard

 

Proud of your achievements Boston, a real graduate in the old world sense...I do think however that it may now be time to wash your hands.....

 

cleanliness is next to godliness and that girl was of the tall Spaniard persuasion so getting a little dirty was just the thing after a day of classes

Diego's pictures of Chile are spectacular by the way

 

....yes they are, it is nice to see pics of areas where people actually CARE about their environment...

 

Hey!

 

That is interesting, most all discussions I have read put it around 40% (memory?!) down on good LPG.

 

10 – 14 kWh/kg for NG -The higher the pure Methan content the better.

12,9 kWh/kg for the common Propan / Butan mix.

But, and I assume that is the source of your information, the density of LPG at a given pressure is higher.

 

The talk has been of mileage and power, I guess that is in a conventionally setup engine with no mods for gas. I know I have had to work at getting the mileage up in my car, certain things seem to be a little more critical when running Autogas, petrol, apparently, is more forgiving.

 

I have driven the Australian produced "Ford Taxi" version of the Falcon with a 4litre? straight six, which came from the manufacturer lpg/gas/whatever ready and still had petroleum capability tank (severely reduced luggage space) - no discernible difference in casual driving - tried it for about an hour some years ago in a mostly urban setting... The owner claimed significantly more miles per $ on that fuel, including the additional cost difference of the vehicle...

 

Openly talking of skulldugery...

My the times they are a changing!

 

you have never seen anything till you have seen the diesel I just finally got registered start up on a cold day

smokes out the whole neighborhood

definitely needs new glow plugs
and there is no way I can drive it with it doing that
I swear you could not see the neighbors house through the smog that belched out of that thing
for about five minutes

got it for a shot of whiskey cause my friend who owned it says no one can make it run
( a challenge if I ever heard it ) so he tells me if I can get it running I can just drive it right the F%^$ off his property
I had it running in about a day and he signed the tittle over a shot

course then I loaned it back to him and he ( a college professor and doctorate in chemistry ) puts gas in it ( a diesel ) so I had to clean out the whole fuel system fir a second time but whatever

originally when I was getting it running after it sat for a year or two I started it on straight motor oil but I did not realize the starting temp would make such a huge difference in the initial burn efficiency

on a cold day that thing starts like a freight train

 

Mas, Zed,

ALL these cars sold here are burning both! Petrol and gas, no matter if they are designed for LPG or CNG.
BUT a LPG car does not run on NG and vice versa (you cannot even fill the tank with the wrong stuff).

Power IS a tad below petrol on both systems. Mileage is substantially below petrol due to the low (relatively) calorific value of the gasses.

When you have some 150 cows and a proper biogas plant, all you need is a compressor and you can run a NG car on pure methan.

The russian NG has about 89% Methan, other proveniences only 65 - 70 so, you might be right, that your net mileage comes out at only 40% of a comparable petrol car.

The power loss though is not so remarkable in everyday use.

Regards
Richard

 

They can run 20 to 40% down on petrol for mileage depending on the setup (injected or mixer + state of tune). The typical vapor injection setup will use some fuel when power is required so you don't notice any drop in power but really they are cheating as its not all LPG! The liquid injection systems can deliver slightly more power than petrol (quantum leap for LPG really!) and will deliver 10 to 20% less mileage than petrol depending on the cars ECU + its all LPG, no cheating! Tank size is the only real problem and therefore range is the main issue, I have a toroidal tank that replaces the spare so I have lost no space but I get around 46ltrs usable fuel out of a 60 ltr tank. Cars like utes can get good tankage under the tray but alas... I don't want a ute. The liquid system can be setup to be dedicated so in theory you could replace the cars petrol tank with more LPG storage. In practice they are not offering dedicated fit's, probably wise at this point in time!