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(...) Followup... this works beautifully. I was a little worried at a few stages of construction when the 1x4 brick sometimes would rotate until it wasn't engaging either gear and then sit there with the 8t gears spinning freely- but in the full (...) (19 years ago, 28-Sep-05, to lugnet.technic)
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| | Re: Help please: I'm trying to get two outputs from one shaft
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(...) I will have to dig it out - but somewhere I have a fairly simple LDraw file showing that sliding worm gear device. I also made an interesting variation on this using Lego clutch gears which allowed 2 motors to give 2 outputs each, plus an (...) (19 years ago, 28-Sep-05, to lugnet.technic)
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| | Re: New technique: three position piston control
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(...) Mark, Did I miss your answer on this? Kev (...) (19 years ago, 28-Sep-05, to lugnet.technic, lugnet.robotics)
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| | Re: Help please: I'm trying to get two outputs from one shaft
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(...) This is great stuff, and will probably work for my application. It's mechanically much simpler than a differential with rachets. Thanks!! (...) I think I can picture how that works: You have a 4-stud-long box with a shaft running lengthwise (...) (19 years ago, 27-Sep-05, to lugnet.technic)
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(...) Hi Tony, Here is something I put together real fast during my lunch break: (URL) The movies are quite big (4MB a piece) but they show clearly how this thing works... Notice that it works in any position as the mechanism is balanced. An other (...) (19 years ago, 27-Sep-05, to lugnet.technic)
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| | Help please: I'm trying to get two outputs from one shaft
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I have one shaft that will be turned by a motor in either direction. And I want to get two different outputs, based on which direction the motor is turning. When the Input shaft turns clockwise, Output 1 turns and Output 2 does not. When the Input (...) (19 years ago, 27-Sep-05, to lugnet.technic)
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WOW you did it again!!! you keep amazes me, cool consept whit a center stop, (...) i was thinking about a center stop myself to make my creations more smootly and extending the combinations of piston movement, but i'm to busy whit my education so i (...) (19 years ago, 27-Sep-05, to lugnet.technic, lugnet.robotics)
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| | Re: Cable Operated Shovel
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(...) Hello Ross, About the bucket - that is the one thing I forgot to take pictures of. The bottom of the bucket does open and close. At the end of the boom that the bucket is mounted on, at the intersection of the grey and black pieces, there is a (...) (19 years ago, 26-Sep-05, to lugnet.technic, FTX)
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| | Re: Cable Operated Shovel
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(...) Hello Nathan, so I do want to spend a fortune on the tracks.. I just need to get my hands on one! Did you see the (incredible) "PARV": (URL) I would really like to build some tracks like that machine has, when I get a chance to save up some (...) (19 years ago, 26-Sep-05, to lugnet.technic, FTX)
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(...) Its all over my head. Thats all I can say. Maybe one of these days I can understand all that circuitry. Good job Kevin! (19 years ago, 26-Sep-05, to lugnet.technic, lugnet.robotics)
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| | Re: New technique: three position piston control
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In lugnet.technic, Mark Bellis wrote: <snip> (...) Was this single or dual piston? (...) Kevin (19 years ago, 26-Sep-05, to lugnet.technic, lugnet.robotics)
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| | Re: New technique: three position piston control
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(...) <snip> (...) The center stop is not the same spot when expanding vs. contracting. I did not try it at different pressures. I just pumped a hand pump as fast as I could to make the sequencer go. I've not seen it overshoot the mid point. (...) (...) (19 years ago, 25-Sep-05, to lugnet.technic, lugnet.robotics)
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| | Re: New technique: three position piston control
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In lugnet.technic, Kevin L. Clague wrote: (SNIP) (...) Interesting stuff! Should make walkers move more smoothly, with the possibility of more groups of legs. The trick will then be reversing all the groups, since it was easier with just two, using (...) (19 years ago, 25-Sep-05, to lugnet.technic, lugnet.robotics)
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| | New technique: three position piston control
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Years ago when I first started playing with pneumatics, I first learned that I could control a piston using a switch. I then learned that you could mechanically link a piston and a switch, and have piston controll the switch. I learned from Eric (...) (19 years ago, 24-Sep-05, to lugnet.technic, lugnet.robotics, lugnet.announce.moc) !
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| | Re: Cable Operated Shovel
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Nice Ben! (19 years ago, 24-Sep-05, to lugnet.technic, FTX)
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| | NWBrickCon, MECHA
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Time is short, and now that I got your attention, you need to know that if you want your mecha a NWBrickCon, you should tell me. snowleopardNO@SPAMfo...ternet.net Tell me what your bringing, how much room ya'll need. And if you want to send stuff, (...) (19 years ago, 23-Sep-05, to lugnet.build.mecha, lugnet.events.nwbrickcon, lugnet.events, lugnet.announce, lugnet.technic, lugnet.robotics) !!
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| | WebCamBot
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Though I don't have the Web setup yet, I have a fully operational webcam robot that will hopefully be internet-controllable in the near future (think, by the end of next year, maybe, if IB tests and extended essay don't get in the way!). The ruler (...) (19 years ago, 23-Sep-05, to lugnet.robotics, lugnet.technic, FTX)
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| | Re: Cable Operated Shovel
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(...) Hi Ben, great shovel! I have a couple of questions though - I can't tell from the pics, does the bucket release door open? If so how? Also, have you found that using the high power motors puts more stress on any bricks, or causes more wear? (...) (19 years ago, 23-Sep-05, to lugnet.technic, FTX)
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| | Re: Cable Operated Shovel
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(...) 40 LBS! Dag that is a heavy one. It definately looks real. I have never seen tracks like that, but then again TLC does not make tracks that could hold that much weight without ripping apart, unless you wanted to spend a fortune. What (...) (19 years ago, 23-Sep-05, to lugnet.technic, FTX)
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| | Cable Operated Shovel
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(URL) Hello! Check out my new pics of a large cable mining shovel: Link to gallery: (URL) (You might have to wait a little while for the brickshelf gallery to be moderated..) I have been experimenting with using non-lego motors to drive this thing (...) (19 years ago, 23-Sep-05, to lugnet.technic, FTX) !
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