Solomons Island, MD

[Kevin's Post]Over the past few weeks I have been overhauling the genset cooling system. I replaced the raw water pump with a new one with a higher capacity. I took apart the heat exchanger and discovered that the coolant side of the heat exchanger had so much scale built up that it was actually restricting the coolant flow through the heat exchanger. Also, a coating of mineral deposits doesn't do much for your heat transfer either. So, I soaked that in acid for a few minutes and it is good as new (see the before and after pictures). I probably could have stopped right there, but after reading about antifreeze, I learned that antifreeze is actually a pretty bad coolant. It's primary job is to not freeze (hence the name anti-freeze). It is actually a much worse coolant than plain old distilled water. By a lot. In fact, if you can guarantee you'll never see freezing temperatures (which I can) you don't even need antifreeze. But you do need the corrosion inhibitors that the antifreeze provides. So I am now running straight distilled water plus a product called 'water wetter' which provides the corrosion inhibitors (and reduces the surface tension of the water to make it an even better coolant). After all this, the engine on the genset is running about 35 degrees cooler. I don't even think the thermostat is opening up completely at this point.

I have discovered the physical law of 'Conservation of Brokenness'. This law states that upon fixing one thing, something else will either break, or reveal its true state of brokenness. It's uncanny. Every time I declare victory over one problem, within a few hours a new one of equal significance appears. For example, I replaced the water pump on the genset, and the SAME DAY the float switch on the shower sump dies. I replaced the genset coolant, and within a few hours I go to change the oil and oil change pump impeller has stripped all it's vanes and won't pump. Now that the diesel on the genset is working great and can handle a 30 amp load without any effort, the generator (the part of the genset that is attached to the engine and converts rotation to electricity) is overheating and shutting down. So, now that goes to the top of my list of major boat issues. Stay tuned.

Anybody tried out the Google Earth stuff? We haven't heard from anybody who has actually tried it yet.