 | | FLL National Championships in the Georgia Dome this week
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This week the FIRST LEGO League National Championships were held in Atlanta at the Georgia Dome (home of the Atlanta Falcons). So since the event was in my backyard I figured it would be fun to see what the event was all about. I got a position as a (...) (20 years ago, 17-Apr-04, to lugnet.technic, lugnet.general, lugnet.loc.us.ga)
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| | Re: SSClagorpion
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(...) I can see the good sense in putting the hip switches on their own sets of levers, as your pics show. That way, the force required for them and for the legs is independent, so there's no extra load on the switches. I am used to mounting the (...) (20 years ago, 16-Apr-04, to lugnet.technic)
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| | Re: SSClagorpion
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(...) Funny! My presentation at Brickest (classic?) was named Pneumatic Magic. When I started on quad242 I thought the cool thing was going to be the ability to make it modify its behavior to go backwards and turn, but the hardest part was the "no (...) (20 years ago, 16-Apr-04, to lugnet.technic)
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| | Re: The latest from Epsilon's Lego Williams range!
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(...) ... (...) You need to use slopes and tiles more, to smooth out the surface. Don't you have some blue and white slopes and tiles? Cheers, (URL) Sci-Fi LEGO> (20 years ago, 16-Apr-04, to lugnet.loc.au, lugnet.technic, lugnet.modelteam, lugnet.build.schleim, FTX)
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| | Re: SSClagorpion
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(...) That makes sense, but you may want to take a look at the video of Kevin's walkers: (URL) you see, at the end of each stride, all four legs are at the bottom of their travel. So while it is true that half the legs will have to support all the (...) (20 years ago, 16-Apr-04, to lugnet.technic)
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| | The latest from Epsilon's Lego Williams range!
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Hello all! Not an aussie icon, but in the spirit of breathing some life into loc.au: (URL) the new williams fw26 (this is the 2004 williams for those who don't follow f1 all that much) I have finally developed the perfect MUCUS technique :) there (...) (20 years ago, 16-Apr-04, to lugnet.loc.au, lugnet.technic, lugnet.modelteam, lugnet.build.schleim, FTX)
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| | Re: SSClagorpion
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(...) A few things spring to mind about this: 1. I usually run robots from a car tyre air compressor at 25PSI. This gives good performance with 1-2 large cylinders moving at a time. Using 6 large pump cylinders as the air source, performance is half (...) (20 years ago, 15-Apr-04, to lugnet.technic)
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| | Re: SSClagorpion
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(...) Well Steve, it might and it might not. Given 18 bits of state (two bits/pistons per leg plus two extra), we could have a total of 256K possible combinations of leg positions. We only want about about 10 of them. If we start out the pistons in (...) (20 years ago, 16-Apr-04, to lugnet.technic)
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| | Re: SSClagorpion
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(...) Yes, I'd rather see a solid, strong, slow robot over a fast robot that succeeds in tearing itself apart. :) (...) That's the throw of the switches, right? Not the throw of the cylinders on the legs. So the legs will "move" at the same speed, (...) (20 years ago, 15-Apr-04, to lugnet.technic)
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| | Re: SSClagorpion
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In lugnet.technic, Kevin L. Clague wrote: <snip> (...) So using #1 axle connectors as the linkage, we get a reduced piston expansion, down to 86% of maximum. Using technic axle joiner perpendicular, we can reduce the range to 70% of maximum. I can't (...) (20 years ago, 15-Apr-04, to lugnet.technic)
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| | Re: 6293 rc receiver Auxiliary output possible?
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thanks for checking Mark! that is more help than i expected. too bad it's not going to work. guess i'm going to have to buy another receiver from bricklink if i really want the extra output. bob (...) Bob Kojima ko@fial.com Fial Incorporated Telecom (...) (20 years ago, 15-Apr-04, to lugnet.technic, lugnet.robotics)
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| | Re: SSClagorpion
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(...) Thinking about this more....... One of the reasons that makes this slow is the inherent piston friction which combined with pressure defines the rate of expansion and contraction. So the rate is not very negotiable. But using rate * time = (...) (20 years ago, 15-Apr-04, to lugnet.technic)
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| | Re: SSClagorpion
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(...) <snip> (...) Well, I know of situations where LEGO has asked some people to recreate their MOCs for them. You know you have arrived if that happens. (...) Kevin (20 years ago, 15-Apr-04, to lugnet.technic)
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| | Re: SSClagorpion
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(...) ... (...) With twice the pistons, the pressure is not as great, but the volume of air would be doubled, right? Using logic, not physics, I think once the pressure is built up (to 13 psi) the compressor may have to do less work to keep it (...) (20 years ago, 15-Apr-04, to lugnet.technic)
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| | Re: SSClagorpion
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(...) Mark Riley was nice enought to point out the errors in my math. The area of the piston care is pi * r^2 = 0.2 Four times that is 0.8. So the minimal pressure needed is 10 pounds / 0.8 square inches or, 12.5 pounds per square inch. Still well (...) (20 years ago, 15-Apr-04, to lugnet.technic)
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| | Re: SSClagorpion
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(...) Hmmmm.... interesting question. I don't know much pneumatic theory, but..... Pressure is in pounds per square inch. So if we know the area of the face of a piston, and we know the pressure we can determine how many pounds a single piston can (...) (20 years ago, 15-Apr-04, to lugnet.technic)
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| | carousel on MOCpages
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I've finally finished the write-up of my carousel at (URL) to .spybotics because it's Spybot powered. (20 years ago, 15-Apr-04, to lugnet.robotics.spybotics, lugnet.technic, lugnet.town)
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| | Re: SSClagorpion
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(...) That's up to you. I'd like to see it move as fast as possible, but I think even if we make it as small as possible, it's going to weigh at least 10 pounds. 3 or 4 pounds will be the RCXs, battey box, Spybot, and motors. So, what will it take (...) (20 years ago, 15-Apr-04, to lugnet.technic)
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| | Re: SSClagorpion
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(...) This is a reality given large LEGO pneumatic pistons, but I knew this when I started this project by inviting Eric to join me. (...) Kevin (20 years ago, 15-Apr-04, to lugnet.technic)
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| | Re: SSClagorpian
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(...) That would probably convince me, if I knew who Tim was, and if I ever went to BrickFest. I'm not that dedicated an AFOL I guess. (20 years ago, 15-Apr-04, to lugnet.technic)
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