Robotics : 19611


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Subject:	Re: "real" LEGO Hovercraft ? (with/without batteries/RCX "onboard")
Newsgroups:	lugnet.robotics
Date:	Tue, 26 Nov 2002 15:58:37 GMT
Original-From:	Chris 'Xenon' Hanson <xenon@3dnatureIHATESPAM.com>
Reply-To:	xenon@3dnature[Spamcake].com
Viewed:	2398 times

Marco Correia wrote: > 3) Is there a LEGO-only way to generate enough air flow (pressure) ? > One solution to "trap" the air underneath the unit is to build a LEGO > framework (as light as possible) and then use plastic film (that used to > keep vegetables fresh etc) to create something like the bottom of an > hovercraft. > ...I'm going to make some tests at home, but I don't think it'll work. But > at least I tried :) I'd be interested in knowing how this works. The ZNAP green helicopter set (which I got three of last year at $9 each!) had some little round turbine-like parts, basically a ducted fan. Never tried them out to see if they're actually aerodynamically functional, but if they were, you could put them in vertical ducts, driven by the ZNAP flexible drive shafts to float the skirts. Ground effect vehicles require quite a bit of power-to-weight, and I'm not sure if this will fly. I suspect you'd have to cheat and use a more powerful motor/rotor combination than pure Lego can offer. > mc. Chris - Xenon -- Chris Hanson | Xenon@3DNature.com | Life is too short to fold socks! New World Construction Set 6 Demo Version!: http://www.3DNature.com/demo/ "There is no Truth. There is only Perception. To Perceive is to Exist." - Xen

Message has 2 Replies:

		RE: "real" LEGO Hovercraft ? (with/without batteries/RCX "onboard")
Hi Chris, :) (...) I have that set. That was one of the first tests I did when I got it. It's my only ZNAP set. I bought it because of the motor, the flex and those wheel/"turbine". From what I remember, it doesn't work that well. It's too tiny. It (...) (21 years ago, 26-Nov-02, to lugnet.robotics)

		Re: "real" LEGO Hovercraft ? (with/without batteries/RCX "onboard")
(...) Actually they don't. You can create a hovercraft that will lift an ordinary adult (say <200lb US) using nothing more than a half sheet of plywood, a 1/4HP vacuum cleaner motor, a shower curtain, some tape, a bunch of 1" washers to keep the (...) (21 years ago, 26-Nov-02, to lugnet.robotics)

Message is in Reply To:

		"real" LEGO Hovercraft ? (with/without batteries/RCX "onboard")
Ok, so we have the 4, 3 and 2 (LegWay :) wheel bots... and the 8, 6, 3, 2, 1(?) leg BOTs. ...but, what about a 0 (zero) Wheel / Leg Bot ? Ok, there's the pseudo-flying bots :)) but, apart from some trials with blimps (helium balloons?) and (...) (21 years ago, 26-Nov-02, to lugnet.robotics)

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