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(...) lurk mode off - Yup ... unless you wanted to connect another cross-axle compatable element. I was just curious how well this would work as a substitute as I only had two original LEGO threaded axles from 8094. Heresy? Doesn't everyone have (...) (26 years ago, 24-Nov-98, to lugnet.robotics)
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| | Re: Worm Drive Question
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There was at one time a double threaded rod that came with little nuts. I have exactly one that came with an early Pneumatic Digger (it was used to firmly hold the Digger to it's tracks by bolting the two together!) but I have used it in other (...) (26 years ago, 25-Nov-98, to lugnet.robotics)
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| | RE: Worm Drive Question
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The Digger with the nifty screw is set number 8851 from 1984 (wow I feel old) (URL) this part every in another set? it's a fairly general purpose part but I've only got the one. (and 5 nuts) Cheers Tim (...) (26 years ago, 25-Nov-98, to lugnet.robotics)
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| | Re: Worm Drive Question
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If you really want one, you can commit the heresy of running a standard axel through a thread cutter and use some little nylon nuts (available at electronics supply houses). At least one other person has done this and posted results to the web (I (...) (26 years ago, 25-Nov-98, to lugnet.robotics)
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| | RE: Worm Drive Question
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(...) Sorry I Lost you there, what do you mean by cut Lego? Tim (26 years ago, 25-Nov-98, to lugnet.robotics)
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| | Re: Worm Drive Question
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(...) I mean cut threads (like on a screw) into the axel using a thread cutting tool (part of a tap and die set available at most good hardware stores). Check out (URL) near the bottom of the page. (26 years ago, 25-Nov-98, to lugnet.robotics)
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| | RE: Worm Drive Question
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(...) As in run an axle through a die to give it a thread, then put nylon bolts on it. Couldn't you just get some threaded rod, and spare your Lego (and avoid heresy :) ? Daniel "Dan'l" Miller Senior, School of Aeronautics and (...) (26 years ago, 25-Nov-98, to lugnet.robotics)
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| | Re: Worm Drive Question
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(...) Sure, you can do this with puppies, too! Ick, shudder! ("Arthur, Arthur, come quick! Someone's knurled the cat!" - hypothetical Monty Python skit) stephen (26 years ago, 25-Nov-98, to lugnet.robotics)
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| | Re: Worm Drive Question
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Just to toss in my three cents (inflation adjusted to 1998 rates ;-) It seems there are two more options that might be a little easier: 1) My kids have gotten a couple of Lego sets that contain a long square shaft that has teeth on it. It mates to a (...) (26 years ago, 25-Nov-98, to lugnet.robotics)
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| | Re: Worm Drive Question
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(...) This is an excellent solution for travel up to 7 inches or so, with a couple of minor drawbacks. 1) This part doesn't seem to be in production any more. I got a few copies, courtesy of Bill Katz, but had to trade away one joint of my little (...) (26 years ago, 28-Nov-98, to lugnet.robotics)
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(...) Nope, not me. I never cut on purpose, and anything that breaks gets tossed. (26 years ago, 28-Nov-98, to lugnet.robotics)
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| | Elevator alternatives
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John has an excellent point. Cables make excellent linear-drive systems in Lego projects. I was trying to build a large elevator a while back, and after trying various solutions, I hit upon the following: Use the chain linkbelt as a cable. Insert (...) (25 years ago, 12-Jan-99, to lugnet.robotics)
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| | RE: Elevator alternatives
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(...) Wow, Sounds cool, I can visualise what you are talking about. Pictures? Tim -- Did you check the web site first?: (URL) (25 years ago, 12-Jan-99, to lugnet.robotics)
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| | Re: Elevator alternatives
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(...) it got lost somewhere... I slapped together a little web page to serve as an index for my pictures. I don't know if I still have the Control Lab code, but it was in Logo, and is pretty trivial, anyway. (URL) for the page and image quality, (...) (25 years ago, 13-Jan-99, to lugnet.robotics)
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