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Subject: fuel use for sailboats
From: Cruising sailboats and powerboats have very different ideas on fuel use and the needs of the sailboat are rarely addressed. For example, most powerboaters are very concerned about the overall cost of the fuel they use primarily because they use a LOT of fuel. Cruising sailboats are not terribly concerned about the overall cost of their fuel because they will always use a small amount. Most sailboats have a smaller engine for their displacement than a powerboat because their primary power is supplied by free wind. However, fuel use (hp/liter or hp/ounce) and overall power sometimes are important for a sailboat. A long distance cruiser can only carry a small amount of fuel and if he has a long period of no or contrary wind, he might want to be able to motor for a long time with little regard for the cost of the small amount of fuel. He might consider it rreasonable to pay a premium for a fuel that was formulated to produce more more power for ounce of fuel burned even if that fuel was twice as expensive as conventional fuel. So, are fuel additives available that would effectively increase the hp/ounce of fuel burned even if they greatly increase the overall fuel cost? Would octane boosters help (or cetane boosters)? A related issue is that most sailboats have a fairly small engine intended only to get the boat up to hull speed in calm water. Putting in a larger engine would be considered wasteful because then the boat would have to always carry around that heavier engine even when it wasnt needed. Is it possible to temporarily increase the power outpuit of a small engine by some means, perhaps a blower, a turbo or even using NOS? This might give the sailboat the ability to better motor off a lee shore in strong winds, motor against a strong running tide, etc. I am primarily interested in times when it is a safety issue, not for convenience so potential engine damage might be acceptable. Any ideas? Subject: fuel use for sailboats From: (Parallax) I am very aware of the limitations on hull speed. What I mean is that sometimes an engine that will enable you to achieve hull speed in calm water will only allow you to do half in wind or current. The idea is to get more power to achieve nearly hull speed for short time when conditions are such that you would otherwise be going slow. I rarely buy my diesel at a marina as I dont ever seem to be near a marina. Normally, I buy fuel and carry it to my boat. In this case, getting a NOS canister would be reasonable. I agree, NOS simply adds extra oxygen allowing more fuel to be burned thus producing more power. Although I have used starting ether when I lived in WY in winter, I do not think it adds any power, it is simply an easily ignited gas to get the motor turning. I am also aware of what octane does and I simply used it as an example of an additive. My question is, are there additives available, sucha s long chain hydrocarbons that would give more power than just gas even though the additive might be very expensive These are two of the funniest troll posts I have read in a long time. LMAO Hell, he even sucked jaxas in. LOL Capt. Bill |
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