 | | Escapement efficiency (Re: Gear train friction?)
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A 1 rotation/ 36 second escapement is going to be really tough. Mine is 1 turn / 8 seconds, and is is close to the edge of the reliability envelope. The big problem is that the escapement must come to a complete stop with every pendulum swing, and (...) (25 years ago, 6-Dec-00, to lugnet.technic)
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| | Re: Gear train friction?
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(...) Hello, I stumbled across your posting about the continuos loop chimer and it blew my mind. So I decided to join lugnut I'm also curently working on a weight driven pendulem clock and I'm going to try to build your device. I originaly tried to (...) (25 years ago, 6-Dec-00, to lugnet.technic)
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| | off topic test
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off topic test (25 years ago, 6-Dec-00, to lugnet.technic)
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| | Re: Gear train friction?
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Fredrik Glöckner <fredrik.glockner@bio.uio.no> wrote in message news:m3k89e4iva.fsf@...ldomain... (...) The difference is, when the bush is rubbing against the beam, it's a much greater surface area than when the axle-end rubs the end-stop. ROSCO (25 years ago, 6-Dec-00, to lugnet.technic)
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| | Re: Strange anomalies in 8460 and 8868...
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I don't have these sets, but I found something similar in the 8002 Destroyer droid. It came with an amendment sheet for page 30, showing a different position for the two rubber bands. Now the photo on page 31 shows yet another position for them.... (...) (25 years ago, 5-Dec-00, to lugnet.technic)
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| | Re: Gear train friction?
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(...) The length of one axle is normally slightly shorter than a corresponding beam, ie. an axle #4 is slightly shorter than a 4 stud beam. So this is probably why you achieve some slack when putting bricks on either side of the axle to support it. (...) (25 years ago, 5-Dec-00, to lugnet.technic)
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| | Re: 3 Section Telescopic Crane Boom
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(...) Excellent stuff - I was hoping you had something different in mind :-) Jennifer Clark (25 years ago, 5-Dec-00, to lugnet.technic)
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| | Re: 8457 Power Puller
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Chain:- 81 links (i think) Motor:- 9v same as mindstorms. Flex System? I like this set, almost tempted to get a 2nd set to get another motor and big set of wheels.. -- Jason King LugNet #665 Jose Antonio Vacas <joseavm@meta4.com> wrote in message (...) (25 years ago, 4-Dec-00, to lugnet.technic)
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| | Re: 8457 Power Puller
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Chain:- 81 links (i think) Motor:- 9v same as mindstorms. Flex System? I like this set, almost tempted to get a 2nd set to get another motor and big set of wheels.. -- Jason King LugNet #665 Jose Antonio Vacas <joseavm@meta4.com> wrote in message (...) (25 years ago, 4-Dec-00, to lugnet.technic)
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| | Re: 8457 Power Puller
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Chain:- 81 links (i think) Motor:- 9v same as mindstorms. Flex System? I like this set, almost tempted to get a 2nd set to get another motor and big set of wheels.. -- Jason King LugNet #665 Jose Antonio Vacas <joseavm@meta4.com> wrote in message (...) (25 years ago, 4-Dec-00, to lugnet.technic)
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| | Re: Strange anomalies in 8460 and 8868...
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(...) I noticed this too. The reason being is that-- to my knowledge-- the picture displayed is just a mirror image of another photo. I don't know why they would do that though. I can't say much as to your 8868 anomaly, as I don't know much about (...) (25 years ago, 5-Dec-00, to lugnet.technic)
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| | Strange anomalies in 8460 and 8868...
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I was just looking around at various pictures of the 8460 (Pneumatic Crane Truck) and 8868 (Airtech Claw Rig) sets, and noticed a few strange things... All the pictures I have seen of 8460 (including the box and Brickshelf scan) appear to have the (...) (25 years ago, 5-Dec-00, to lugnet.technic)
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| | Strange anomalies in 8460 and 8868...
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I was just looking around at various pictures of the 8460 (Pneumatic Crane Truck) and 8868 (Airtech Claw Rig) sets, and noticed a few strange things... All the pictures I have seen of 8460 (including the box and Brickshelf scan) appear to have the (...) (25 years ago, 5-Dec-00, to lugnet.technic)
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| | Does anyone have the Comborider instructions?
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I want the instructions for the big RoboRiders, but they can apparently no longer be found at lego.com. I tried to load the smaller riders, but they are all one big error. Are these on brickshelf or anything? (25 years ago, 5-Dec-00, to lugnet.general, lugnet.technic, lugnet.build)
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| | Re: 8457 Power Puller
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I have build 2 of these machines, this is a nice set, but I have a two complaints about this set. 1. the flex stearing system does not respond good. 2. the mechanisme to transfer the motor to the wheels is a sloppy, there are 5 chains with each 16 (...) (25 years ago, 4-Dec-00, to lugnet.technic)
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| | Re: Gear train friction?
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Amnon, I've also found a not in-significant source of friction is the bushes against the beams (or whatever your axle goes through). I've reduced this a bit on occasion by not using bushes to hold axles in position, but having a brick at each end, (...) (25 years ago, 4-Dec-00, to lugnet.technic)
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| | Re: 3 Section Telescopic Crane Boom
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I had another mechanism in mind. I'll see if I get a chance one of these days to make a prototype.... Duq "Jennifer Clark" <jen@vulture.dmem.strath.ac.uk> wrote in message news:G503FM.4tz@lugnet.com... (...) add (...) (25 years ago, 4-Dec-00, to lugnet.technic)
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| | Gear train friction?
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One of the tough problems in building a clock is to design a very low friction, very tall gear ratio drive. I want the spool to turn around somewhat less than once every half hour, and the escapement to turn once every six seconds, so I need around (...) (25 years ago, 4-Dec-00, to lugnet.technic)
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| | Re: Micro Scout powered scorpion
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(...) Thanks! I'm glad you liked it =). ~Nathan (...) (25 years ago, 4-Dec-00, to lugnet.technic, lugnet.robotics)
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| | Chain links (Re: Clock strikes hours)
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Links are a Pitsco-Dacta item, but I don't know if they ship to Australia. They are really useful for solving tricky problems, and having two different types is handy. They are expensive, however. Sometimes I use them where I need a little more (...) (25 years ago, 4-Dec-00, to lugnet.technic)
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