 | | Re: My Lego planetary gear
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That alternative implementation gives me an idea. What about putting gear wheels around on arms sticking out at various angles and held together by structural Technic parts, and having various combinations meshing with each other? The only problem (...) (25 years ago, 4-Oct-00, to lugnet.technic)
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| | Re: My Lego planetary gear
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Ah. Hm, I wonder if it could be used for a lego transmission. I cleaned up my first planetary gear, and I came up with a second implementation. It is bigger, and it is not obviously a planetary system, but I think it is topologically equivalent. It (...) (25 years ago, 4-Oct-00, to lugnet.technic)
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| | Re: My Lego planetary gear
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You can actually get very similar behaviour using a standard differential. If you hold one "output" shaft, and turn the other, the crown wheel turns at half the input speed. The advantage of planetary gears is the output shaft is in line with the (...) (25 years ago, 4-Oct-00, to lugnet.technic)
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| | Re: technic motors as generators????
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Brad Hamilton <bhamilto1@home.com> wrote in message news:G1vvuq.9no@lugnet.com... (...) Even (...) the (...) can (...) Basically motors & generators are pretty much interchangeable. You'll find that if you gear the "generator" up to a higher speed (...) (25 years ago, 4-Oct-00, to lugnet.technic)
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| | technic motors as generators????
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I saw some sort of diagram some place (I think in some sort of Dacta documentation) stating that you could use a technic motor as a generator. This makes sense, but I never tried it until today and I am utterly amazed at how well it works! I'm using (...) (25 years ago, 4-Oct-00, to lugnet.technic)
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| | Re: My Lego planetary gear
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By locking the outer ring, in acts as a 2:1 or 1:2 gear (depending on which shaft you use as input and which as output. If you lock the planets, it turns into a 1:1. If you let everything loose, it is a neutral gear. If you lock the output shaftand (...) (25 years ago, 3-Oct-00, to lugnet.technic)
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| | Re: Black old style motor
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(...) Part of that info is at: (URL) to whoever originally posted the link. I forget whether it was here or on r.t.l) Ran (25 years ago, 3-Oct-00, to lugnet.technic)
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| | Re: My Lego planetary gear
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That is certainly compact. Do you have any ideas how it might be used in an actual model? I suppose locking either the top half or the bottom half, or both, would change the way the output shaft differs from the input shaft? Although what I would (...) (25 years ago, 3-Oct-00, to lugnet.technic)
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| | Re: Two original Technic creations
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(...) one (...) lego (...) Right on!!! :) I like nothing better than sawing away at my Lego, and gluing them together for the greater purpose, I just make sure that the parts aren't vital for something else:) Did you try taking a piece of "handle" (...) (25 years ago, 3-Oct-00, to lugnet.technic)
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| | Re: Black old style motor
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Joakim Olsson <jocke@arjay.nu> wrote in message news:G1utAG.8pv@lugnet.com... (...) something (...) There were also some really old 4.5V ones (early 70's?) that looked similar to the 9V train motor. These ones had internal gearing, and had a fair (...) (25 years ago, 3-Oct-00, to lugnet.technic)
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| | Re: Two original Technic creations
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I'd like to see a web page with ideas for modified parts like your blind- bushinged axle. I would love to see Lego come out with more geartrain parts, and if we could come up with a favorite set of modifications it might encourage them to make (...) (25 years ago, 3-Oct-00, to lugnet.technic)
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| | Re: Two original Technic creations
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(...) Quite :-) Jennifer Clark (25 years ago, 3-Oct-00, to lugnet.technic)
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| | Re: Two original Technic creations
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(...) Well, as long as no other material is added to the parts I suppose it's still pure LEGO. But IMHO it doesn't matter much if one customizes the parts or add other pieces of material, as long as you make something cool and it's based on LEGO. (...) (25 years ago, 3-Oct-00, to lugnet.technic)
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| | Re: super cars
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(...) That is very true, I had forgotten about that approach, and you are right, some of them do look great, for example, the Fiat on your web site really captures the correct look. In a similar but different way, the old Technic motorbike also (...) (25 years ago, 3-Oct-00, to lugnet.technic)
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| | Re: Two original Technic creations
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(...) OK, I'll 'fess up. I had a technic beam which was covered on one side, and the requirement to put an axle through it to hold a wheel type thing on. Because one side was obscured, it was not possible to get a bush to hold the axle at the back, (...) (25 years ago, 3-Oct-00, to lugnet.technic)
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| | Re: super cars
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(...) I think that one could make a brick-based body for an 8448-sized car -- there are many who have done so and put them on the web and some of them look great. But the vast number of parts needed makes such a vehicle more or less unplayable. (...) (25 years ago, 3-Oct-00, to lugnet.technic)
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| | RE: Two original Technic creations
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(...) Jennifer, In light of the recent thread on modifying parts in lugnet.build, I think you had better come clean and tell us which part you modified, why you modified it, and how you modified it. The first step in getting beyond the problem is (...) (25 years ago, 3-Oct-00, to lugnet.technic)
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| | Re: Black old style motor
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"Maico Arts" <maico@m-arts.demon.nl> wrote in message news:G1uC0n.1wD@lugnet.com... (...) the (...) It would be nice to have some kind of "compare-table" in Excel or something to see the differences between the four different types of Technic (...) (25 years ago, 3-Oct-00, to lugnet.technic)
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| | Re: Two original Technic creations
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(...) Thanks Tobbe - I had actually thought of that, and I was a cat's whisker away from doing so, despite the warnings from another lugnetter that the structure of the 8 tooth gear may be too weak to handle being "rebored", but fortunately I (...) (25 years ago, 3-Oct-00, to lugnet.technic)
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| | Re: Black old style motor
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(...) The 4.5V one was pathetic. I tried to power the 8860 with it, without the benefit of the external gear reduction box specified in the instructions, and it required so much gearing down that it moved abysmally slowly. However, I discovered that (...) (25 years ago, 3-Oct-00, to lugnet.technic)
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