Windmill Driven Cart windmill driven car

Testing my windriven cart on the sands - mostly directly into the wind

Category:

Science & Technology

Tags:

• Wind
• Turbine
• cart
• model.
• Windmill
• driven
• model

[joekinney]

Going down wind, would a standard sail be better than the windmill ?

[ZKMX7]

@joekinney Downwind is easy and, as you say, a standard sail might be better. This one is all about going upwind directly, which can't be done with any other method.

[videofizyka]

@ZKMX7

But directly downwind faster than wind is not that easy. At least not on water. When will you build a DDWFTTW boat? With all your experience with directly upwind you would have a good chance achieving it.

[ZKMX7]

@videofizyka Thanks for your confidence! I have done a few tests but they didn't look promising. It may be possible, but I haven't got there yet.

[IngmarHendriks]

This might interest you: youtube.com/watch?v=wrro4MxNr7­Y

It is basically the same thing as you bade but then BIG and its an international race event!

[ZKMX7]

@ethankern

I meant you could make a small model maybe. Anyway, later you may be able to make one and then you will have all the information. It's all on the website.

[ethankern]

@ZKMX7 I would love to make a full sized one but I don't really have access to those kinds of mattereals. And I have a ton more questions. I've just mainly been scribbling things down in a note book. Like what might work and what might not and I really like having someone that's done this before and can say yeah this would work.

[ZKMX7]

@ethankern

I don't think paddlewheels would work as well. Wern't paddlewheels overtaken by props more than 100 years ago? Just think why that was. The six-speed prop is not a bad idea, but unsuitable for small models. If you have ideas, why don't you make one yourself? It's not too difficult.

[ethankern]

@ZKMX7 do u think it might be more efficient with a paddle wheel, i mean it might even be easier to have the pulleys link up to it. could u also take like the gears from a bike so u cold have like a six speed prop?

[ZKMX7]

@ethankern

No gear drive. With these small models a gear drive soaks up too much power. Might by ok with a big man-carrying one. You are right there is a big propeller under the water on the boats.