 | | 3rd option (non-mechanic)
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It had to be said: Use a rotation sensor and an RCX to interface to the motor A polarity switch will also work, see: (URL) (23 years ago, 28-Nov-01, to lugnet.technic)
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| | Re: Mechanical Automatic Transmission
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Awesome! Thanks for building one of these. Have you put together any instructions or a .dat file? I'd like to use this in a 4x4 I'm building. Thanks again. -Nathan (...) (23 years ago, 28-Nov-01, to lugnet.technic)
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| | Re: Motorized Lego Steering
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The simplest way is to merely use a clutch gear. (URL) The motor will continue to spin, but will quit pushing on the rack, effectively keeping your assembly in one piece. -Nathan (...) (23 years ago, 28-Nov-01, to lugnet.technic)
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| | Re: Motorized Lego Steering
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(...) Their are two methods I can think of. The first is the one I used on my Rotinoff. Simply use the large pulley wheels for your transmisson. Use elastic bands in the gear down mechanism and when the steering reaches the stop the small pulley (...) (23 years ago, 27-Nov-01, to lugnet.technic)
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| | Re: building thicker technic axles
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(...) One thing I noticed about Technic Axles is that they seem to have a bit of rational flex. You have to have something with a bit of mass being rotated about the axle to notice it. Look at my znap/technic ferris wheel here ... (URL) The center (...) (23 years ago, 27-Nov-01, to lugnet.technic)
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| | Re: building thicker technic axles
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(...) Definitely. Although it doesn't need to rotate much, I've used such an idea on my bridge (URL) for the main support hinges. Also, as it only takes forces in 1 direction, I've only used 2 corner (macaroni) pieces on one side. The sections of (...) (23 years ago, 27-Nov-01, to lugnet.technic)
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| | Re: building thicker technic axles
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(...) Well... there's always the technic turntables-- you can build on top of them with regular bricks... (URL)... (...) Probably. Although it might be considerably larger in order to get the sturdiness necessary. I know I contemplated it many times (...) (23 years ago, 27-Nov-01, to lugnet.technic)
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| | Motorized Lego Steering
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Is there a way to stop the motor from exerting force on the gear rack once the steering has reached its furthest point? i.e. How do you stop the steering mechanism from going to far? (23 years ago, 27-Nov-01, to lugnet.technic)
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| | Re: building thicker technic axles
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(...) Probably, but I think an easier solution is to have multiple shearing planes on your axle (a normal Technic axle). You can kind of see this idea in my crane: (URL) don't know how much shear force an axle can take, but I know it's quite a bit. (...) (23 years ago, 27-Nov-01, to lugnet.technic)
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| | building thicker technic axles
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Hello, When I see those very big cranes, I wonder how the pivoting points at the bottom of the large booms can hold it out. Are two or more beams with a technic axle enough to handle the enormous force ? I was wondering if it's possible to build (...) (23 years ago, 27-Nov-01, to lugnet.technic)
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| | Re: Mechanical Automatic Transmission
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(...) Couldn't have put it better myself! Except perhaps many thanks! That's really neat, Jeff! I think I've worked out how it all goes together - I'm gonna have to try it out on the weekend! And I'd be interested in details of your 9-speed gearbox (...) (23 years ago, 27-Nov-01, to lugnet.technic)
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| | Mechanical Automatic Transmission
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I made a three speed, fully mechanical, automatic transmission a few weeks ago, and put a description of it on a web page. It uses a locking differential to select the gears, and I've not seen that done in lego before. If you are interested, the URL (...) (23 years ago, 26-Nov-01, to lugnet.technic) !!
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| | Re: Testers/Evaluators wanted
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(...) Hi: I would like to be a tester. My email address is joev@frontiernet.net (23 years ago, 26-Nov-01, to lugnet.technic, lugnet.robotics)
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| | Testers/Evaluators wanted
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I have two prototype/preproduction "devices" looking for a good home. 1. Generic RCX sensor adapter brick. This little 2x4 brick interfaces between the RCX sensor input and your own sensor design. It does all the hardwork, multiplexing the power and (...) (23 years ago, 26-Nov-01, to lugnet.technic, lugnet.robotics)
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| | Re: Launcher?
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Markus Matern has built an impressive throwing machine, see (URL)I'd like to know if anyone has ever built a Lego apparatus that launches (...) (23 years ago, 26-Nov-01, to lugnet.technic)
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| | Re: Launcher?
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Hi Greg, You can google "lego gun" to get info a couple of projects. Additionally, check out (URL) favourite, but his home page is donw). I realize it is not exactly what you are looking for, but it might help. Cheers, Miguel Agullo (URL) (23 years ago, 25-Nov-01, to lugnet.technic)
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| | Re: Launcher?
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(...) Never tried, but it might be worth experimenting with the shock absorbers. Put a few of them together on the job, with some kind of trigger, and I reckon you could get a fair bit of power. Especially the ones in the silver champion. But more (...) (23 years ago, 25-Nov-01, to lugnet.technic)
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| | Re: a question about the bionicle comics
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(...) Yeah, I got one. I think it's an infected card. I don't really care, though, I don't collect the ccg cards. (23 years ago, 25-Nov-01, to lugnet.technic.bionicle)
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| | Launcher?
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I'd like to know if anyone has ever built a Lego apparatus that launches things. I am interested in any devices that can flig a weight of up to one pound about 6 inches in the air. If this has ever been done, I'd really like to know how. If it (...) (23 years ago, 24-Nov-01, to lugnet.technic)
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| | Re: Straightening technic tubing?
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Hello all, (...) tube (...) How about these technic bricks 1 x 2 with hole. You can put them thru these. Probably they will not end up straight but atleast not bend. Of course you have to leave it a couple of days to rest... Greetings Maico Arts (23 years ago, 24-Nov-01, to lugnet.technic)
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