@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.
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.
so im assuming the boat uses the same thing? and with the boat does it have a propeller or a paddle wheel? if u used a propeller did u have a right angle gear drive or just more pulleys?
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.
@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?
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.
It's just string. Tensioned with jockey pulley and elastic band. with rubber faced pulleys cut into bands from rubber gloves. Goes thro 90 degrees to go back to drive wheel. Check website
@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.
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.
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!
IngmarHendriks 3 months ago
Going down wind, would a standard sail be better than the windmill ?
joekinney 6 months ago
@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.
ZKMX7 6 months ago
@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.
videofizyka 6 months ago
@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.
ZKMX7 6 months ago
so im assuming the boat uses the same thing? and with the boat does it have a propeller or a paddle wheel? if u used a propeller did u have a right angle gear drive or just more pulleys?
ethankern 1 year ago
@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.
ZKMX7 1 year ago
@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?
ethankern 1 year ago
@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.
ZKMX7 1 year ago
now how does the pulley system work? im really interested in this stuff
ethankern 1 year ago
@ethankern
It's just string. Tensioned with jockey pulley and elastic band. with rubber faced pulleys cut into bands from rubber gloves. Goes thro 90 degrees to go back to drive wheel. Check website
ZKMX7 1 year ago
@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.
ethankern 1 year ago
@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.
ZKMX7 1 year ago