 | | Re: "real" LEGO Hovercraft ? (with/without batteries/RCX "onboard")
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(...) 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 (...) (23 years ago, 26-Nov-02, to lugnet.robotics)
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| | Re: "real" LEGO Hovercraft ? (with/without batteries/RCX "onboard")
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(...) That was the SRN1 - the worlds first working full-sized hovercraft - which (amazingly) didn't have a skirt. You can see a picture of it here: (URL) Steve Baker ---...--- HomeEmail: <sjbaker1@airmail.net> WorkEmail: <sjbaker@link.com> HomePage (...) (23 years ago, 27-Nov-02, to lugnet.robotics)
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| | Re: Polling sensor values with wait_event
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Thomas, You are mostly correct. However, keep in mind that tasks with the same priority get checked in turn. The first task in the priority chain does not get undo precedence over the others in the same priority level. Example: Tasks A, B and C all (...) (23 years ago, 27-Nov-02, to lugnet.robotics.rcx.legos)
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| | Re: "real" LEGO Hovercraft ? (with/without batteries/RCX "onboard")
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(...) Basic LCAC design. The air that drives the skirt is -not- derived from the direction fans but rather from the turbine input plenums (those babies will suck as much air in just a few 10's of sec. as goes through your entire house in year). If (...) (23 years ago, 27-Nov-02, to lugnet.robotics)
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| | Re: "real" LEGO Hovercraft ? (with/without batteries/RCX "onboard")
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A ducted fan approach may work. Ducted fan hovercraft have one or two big fan blades on the back that push the craft forward, but a duct takes some of the air and uses it to fill the skirt. This is probably the "lightest" design approach. Direction (...) (23 years ago, 27-Nov-02, to lugnet.robotics)
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| | Re: A Really Cool MOC - Air Powered Air Propelled
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This thing is ABSOLUTELY super cool. Indeed a challenge to beat. Will probebly run a few inches more with the slick tires from set 8422. Hm, also eye-catching color-scheme :-) Klaas (...) (23 years ago, 27-Nov-02, to lugnet.robotics, lugnet.technic)
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| | Re: Helicopter was Re: Newbie has an idea
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(...) You are welcome. (...) I did a fair amount of experimenting on the rotor blades. I also tried the RDS insect wings (though I only had two) and I did have limited success. I couldn't think up a way of mounting them that will keep them at a (...) (23 years ago, 26-Nov-02, to lugnet.robotics)
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| | Re: technic turntable mould difference
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(...) I haven't taken pictures yet - from the question I understand he maintains the list of parts for bricklink / lugnet ? What is the emailaddress ? Mark-Jan (23 years ago, 26-Nov-02, to lugnet.robotics, lugnet.technic)
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| | Re: "real" LEGO Hovercraft ? (with/without batteries/RCX "onboard")
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(...) The experiments we've done with the helicopter suggest that you can generate some pretty impressive volumes of fairly slow moving air - but high speed/low volume is hard. The RDS insect wings that we used on our helicopter work really well, (...) (23 years ago, 26-Nov-02, to lugnet.robotics)
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| | Re: technic turntable mould difference
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Sent the pictures to Clark Corner yet? Duq "Mark-Jan Bastian" <markjan@xs4all.nl> wrote in message news:H67DIo.84u@lugnet.com... (...) (23 years ago, 26-Nov-02, to lugnet.robotics, lugnet.technic)
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| | technic turntable mould difference
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Hello, I'm building a very solid turntable base, and found a problem with one of the turntables I bought via bricklink. All the turntables I have used to have little dents at the base, also at the side which has the three bottom mounting holes. But, (...) (23 years ago, 26-Nov-02, to lugnet.robotics, lugnet.technic)
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| | RE: "real" LEGO Hovercraft ? (with/without batteries/RCX "onboard")
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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 (...) (23 years ago, 26-Nov-02, to lugnet.robotics)
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| | Polling sensor values with wait_event
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Hello all, Is it true that the wakeup function is only checked once every timeslice and only for the process that has the highest priority and is at the front of the priority chain? For example, a process k is waiting on the wakeup function y wich (...) (23 years ago, 26-Nov-02, to lugnet.robotics.rcx.legos)
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| | RE: Newbie has an idea - Nascar style racing?
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(...) How about blocking the illumination LED and using the LEGO LAMP for illumination? (...) This eliminates one more color/pattern for the RCX to look for, probably a good thing. How would this relate to determining winner of a race? (...) The (...) (23 years ago, 26-Nov-02, to lugnet.robotics)
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| | Re: "real" LEGO Hovercraft ? (with/without batteries/RCX "onboard")
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(...) 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 (...) (23 years ago, 26-Nov-02, to lugnet.robotics)
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| | "real" LEGO Hovercraft ? (with/without batteries/RCX "onboard")
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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 (...) (23 years ago, 26-Nov-02, to lugnet.robotics)
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| | Re: Helicopter was Re: Newbie has an idea
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(...) THe thing we couldn't understand was how you'd managed to make the helicopter fly forwards and backwards. We'd assumed you had some amazingly clever cyclic pitch adjustment in the rotor head (which looks complicated enough to maybe do (...) (23 years ago, 26-Nov-02, to lugnet.robotics)
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| | USB Tower in Linux
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Hi! How can I use the USB Tower in Linux, especially with leJOS? greetings, Raphael (23 years ago, 26-Nov-02, to lugnet.robotics)
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| | Re: Newbie has an idea - Nascar style racing?
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Hi Steve, (...) not refill their own cartridges. (...) brick corner during a crash. Here in Italy, Mario Ferrari printed a beautiful (but very expensive) track that we regularly use for our Gran-PRIS competitions. It's 200x250 cm wide with borders (...) (23 years ago, 26-Nov-02, to lugnet.robotics)
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| | Re: Another cement mixer......
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(...) I will do. Dennis (23 years ago, 26-Nov-02, to lugnet.technic, lugnet.robotics, lugnet.general, lugnet.modelteam, lugnet.loc.it)
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