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FisherTechnik–OecoTech Project 2

July 6th, 2011

The second project offered by the OecoTech kit reuses many of the things we have built during the first project. This time, the plan is to build a Water Turbine. Instead of transforming the energy into motion and stop there, we’ll further convert it to electricity.

To accomplish this, we’ll use the motor provided in the set, and use a simple system to have its drive wheel put into motion by the water’s energy. To verify that the motor is actually producing electricity, we’ll plug-in a LED (Light Emitting Diode).

FisherTechnik–OecoTech Project 2–Water Turbine

One tip for the model to work properly: Do not extend the rubber band making the link between the big wheel and the motor axis to its maximum. It would only create more friction, and possibly make it impossible for a water stream to make the wheel move. In any case, we should always try to build the most efficient system => With the least wasted energy.

In the set, there is also a capacitor (called Goldcap) of 10F, which can hold quite a charge. I tried using it in parallel with the LED, but somehow it did not seem to light up. Maybe having the capacitor induces a voltage drop too consequent for the LED to illuminate.

FisherTechnik–OecoTech Project 1

July 4th, 2011

I have just completed the first project from the FisherTechnik – OecoTech box. This project teaches how to convert water energy into motion. As mentioned in the book, it is not possible to store the energy using the current setup. However, this leads to many ideas. I somehow wish now that I move into a nice house, with a river running through the back of my yard!


Since I can’t keep all the models constructed, as I need the parts to build the other ones (and I wouldn’t have enough space in my appartment to store everything anyway), I took a short video of the sawmill in action.


FisherTechnik–OecoTech Project 1–Sawmill

Off to the next project Sourire