 | | Re: Serenity, an autonomous NXT-based boat —Ralph Hempel
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| | | (...) Brian, Have you considered using some of those ZNAP flex axles and a LEGO propellor? Ralph (17 years ago, 13-Sep-07, to lugnet.robotics)
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| | | | | Re: Serenity, an autonomous NXT-based boat —Brian Davis
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| | | | | (...) Actually, I haven't thought of that - at least partially because I've never had those axles. But I would think that a vertical axle driving meshed crown gears to drive the horizontal propellor axle, or even an inclined axle that is turned (...) (17 years ago, 13-Sep-07, to lugnet.robotics)
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| | | | | | | Re: Serenity, an autonomous NXT-based boat —Tim McSweeney
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| | | | | | (...) What about paddle wheels? Tim (17 years ago, 13-Sep-07, to lugnet.robotics)
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| | | | | | | | Re: Serenity, an autonomous NXT-based boat —Brian Davis
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| | | | | | (...) Those are a good all-LEGO solution... but they tend to splash. A lot. This isn't fatal, but means either "splash shielding" the electronics (which requires more weight), or making the entire robot bigger (so the splashing wheels aren't close (...) (17 years ago, 13-Sep-07, to lugnet.robotics)
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| | | | | | | | Re: Serenity, an autonomous NXT-based boat —Dennis Williamson
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| | | | | | | (...) Airboat! (17 years ago, 13-Sep-07, to lugnet.robotics)
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| | | | | | | | | Re: Serenity, an autonomous NXT-based boat —Brian Davis
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| | | | | | | | | (...) Good idea, and I should have added that to the list. But a high-thrust LEGO air propeller or fan seems to be even tougher to make than a water propeller. There's been a lot of discussion in the past about LEGO hovercraft, but it's rather hard (...) (17 years ago, 14-Sep-07, to lugnet.robotics)
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| | | | | | | | | Re: Serenity, an autonomous NXT-based boat —Rob Antonishen
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| | | | | | | | OK - Since you beat me to that one how about magnetohydrodynamic propulsion (thought that might be hard with stock Lego :) Or more realistically, how about counter-rotating screw drives, like this one: (URL) be able to make something like it by (...) (17 years ago, 14-Sep-07, to lugnet.robotics)
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| | | | | | | | | | Re: Serenity, an autonomous NXT-based boat —Dennis Williamson
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| | | | | | | | (...) Oars! (17 years ago, 15-Sep-07, to lugnet.robotics)
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| | | | | | | | | | Re: Serenity, an autonomous NXT-based boat —Johan™Strandberg
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| | | | | | | | (...) Oars are nothing but highly asymmetric paddle wheels. Yes, I know, that's a bit simplified, but still splashes a lot unless you have the high amount of control over force curves, blade angle, etc. that an experienced rower has. Just check out (...) (17 years ago, 15-Sep-07, to lugnet.robotics)
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| | | | | | | | Re: Serenity, an autonomous NXT-based boat —Rob Antonishen
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| | | | | | | (...) Airboat? Though I don't know if you could drive a large enough prop fast enough to move you... -Rob A> (17 years ago, 14-Sep-07, to lugnet.robotics)
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| | | | | | | | Re: Serenity, an autonomous NXT-based boat —Matthias Paul Scholz
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| | | | | | Zitat von Brian Davis <brdavis@iusb.edu>: (...) Sails. The motors used to trim them according to the direction and strength of the wind. ---...--- This message was sent using IMP, the Internet Messaging Program. (17 years ago, 14-Sep-07, to lugnet.robotics)
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| | | | | RE: Serenity, an autonomous NXT-based boat —Simon Bogaert
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| | | | (...) I consider the ZNAP flex axles "not good enough" to be put to good use. Another useful item from the ZNAP collection, however, are the wheels. They have a turbine-like shape and from what I remember from past testing in the kitchen sink, they (...) (17 years ago, 13-Sep-07, to lugnet.robotics)
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