
03-29-2010
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Junior Member
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Join Date: Nov 2009
Posts: 16
Rep Power: 0
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Hey guys,
Glad you started this thread. I've been running on waste vegetable oil for years (in my cars). Now that I'm looking at a sailboat with a diesel motor in it, I can't help but consider converting it to run on WVO also.
Many people look at a WVO conversion with a time-to-cost-equilization perspective. By that I mean that they do the math to find out how long it would take to recoup their investment based on the cost savings of the cheaper (or free) fuel.
That's a valid way to look at it for sure. However, there are plenty of other ways to look at it also. Idealists who sail partly because they don't want to live a heavy carbon-based life hate to have to turn on the engine and use fossil fuels at all. I know of people who install oars on their sailboats for this reason. WASTE vegetable oil is basically carbon neutral, and I often get it free from pizza joints and Chinese restaurants. Gotta love that when Diesel is over $3.00 per gallon.
It's much more financially worth while for me to use WVO in my cars since I often drive a thousand miles in a month. How many hours do you use your boat's diesel engine though?
So, if I get this boat that I'm interested in, I'll be considering converting the engine. Based on the two car conversions I've done so far, I know that it won't cost $1,500 as quoted above. One can do a proper installation himself for probably $500 to $800. I wouldn't want to buy a kit anyway, as they are not custom designed for the marine application. Better to design and implement the system myself.
For the marine environment, my main concern would be having enough space in the engine compartment for the added hoses and valves!
I've also built a biodiesel reactor (appleseed type), and I've made biodiesel instead of using waste vegetable oil. You can either convert the engine to use straight oil or convert the oil to be used in an unconverted diesel engine. Making biodiesel is way more labor intensive than using straight vegetable oil, but if you have a good source of pre-made WASTE-VEGETABLE OIL SOURCED biodiesel, then that's the easiest by far. Then you can go carbon neutral with your sailboat without having to convert the engine.
If you get biodiesel that's made from newly harvested vegetable oil that was grown specifically to make biodeisel then the carbon neutrality no longer exists as it uses way more energy to create biodiesel from new vegetable oil (seed to fuel) than it does to make it from waste vegetable oil (dumpster to fuel). Good luck finding it though. Around here we can get it in 5-gallon fuel cans at various mini-marts. If you get biodiesel at the pump then your 90% likely to be buying the bad new vegetable oil sourced biodiesel. DONT BUY IT!
Still, to do it, I would think you'd do it for idealist reasons, not financial ones. I hate using fossil fuel and contributing directly and personally to global warming. I'm partly looking to cruise for this reason.
Kristopher Sprockett
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Sailing an Islander 37' sloop south to Florida.
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