 | | Props for Hovercraft —Eric Sophie
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| | | I havn't followed as closely as I would have liked, so I don't know if this has already been mentioned. But this part is the "Ticket" !!! (URL) we get some dialog going on this Prop? e (URL) (22 years ago, 6-Feb-03, to lugnet.technic, lugnet.robotics)
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| | | | | Re: Props for Hovercraft —Paul Kleniewski
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| | | | | it's cool but i think there should be used few of them and probably we couldn't buid tunnel small and smooth enough but if enyone has this part plz check it pixel "Eric Sophie" <mylegomaster@aol.com> wrote in message news:H9vt9E.Gzv@lugnet.com... (...) (22 years ago, 6-Feb-03, to lugnet.technic)
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| | | | | | | Re: Props for Hovercraft —Tobbe Arnesson
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| | | | | | (...) That's the problem with this part, it only came in <set:8855>, although it was availible as a service pack once. A friend of mine had this set when he was a youngster, perhaps he's willing to sell it to me, I've been meaning to ask him but (...) (22 years ago, 6-Feb-03, to lugnet.technic)
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| | | | | | | | Re: Props for Hovercraft —Eric Sophie
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| | | | | | Tobbe, ya only one set and service pack ever. :( I don't have one either. I know of serveral ways to get some high RPM gear configs. Looking at the Airscrew I be it can push a good volume of air. As Pixel said the trick is creating a good duct to (...) (22 years ago, 7-Feb-03, to lugnet.technic)
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| | | | | | | | Re: Props for Hovercraft —Paul Kleniewski
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| | | | | | "Eric Sophie" <mylegomaster@aol.com> wrote in message news:H9wyr6.9qz@lugnet.com... (...) looks like lego want to be sure that nobody will build really flying machine cause all other propellor have a pin hole instead axle hole :( so we are probably (...) (22 years ago, 7-Feb-03, to lugnet.technic)
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| | | | | | | | Re: Props for Hovercraft —Tobbe Arnesson
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| | | | | | (...) This gives me an idea, it's not only servos I've aquired from the model airplane times... (...) There should be tons of info on the web, howstuffworks.com is the primary source I'd consider: (URL) good page: (URL) Tobbe good luck, I hope you (...) (22 years ago, 7-Feb-03, to lugnet.technic)
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| | | | | | | | Re: Props for Hovercraft —Paul Kleniewski
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| | | | | | | "Tobbe Arnesson" <StPnAtM@lotek.nu> wrote in message news:H9xL37.JzI@lugnet.com... (...) hard to confess but i didn't know they are different :( thx tobbe pixel (22 years ago, 7-Feb-03, to lugnet.technic)
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| | | | | | | | | Re: Props for Hovercraft —Tobbe Arnesson
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| | | | | | | | (...) In fact I thought about drum fans before I got to that page but afterwards I'm even more interested in building one in LEGO... But what's worse is I got thinking about making a "real" hovercraft, perhaps I should try one in LEGO first :) (...) (22 years ago, 7-Feb-03, to lugnet.technic)
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| | | | | | | | | | Re: Props for Hovercraft —Paul Kleniewski
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| | | | | | | | "Tobbe Arnesson" <StPnAtM@lotek.nu> wrote in message news:H9xp7B.4AL@lugnet.com... (...) perhaps I (...) ppl do hovercrafts so you can do it also :) personally i don't like to do things which are dirty once i built a buggy (with my friend) so i (...) (22 years ago, 7-Feb-03, to lugnet.technic)
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| | | | | | | | Hoverfan (was: Re: Props for Hovercraft) —Tobbe Arnesson
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| | | | | | (...) my lunch hour, this was my best attempt: (URL) you can see it only has four blades but I could not make any more easily, I'm thinking about solutions though... I connected an old 9V motor underneath it and it holdes up just fine and blows a (...) (22 years ago, 7-Feb-03, to lugnet.technic)
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| | | | | | | | Re: Hoverfan (was: Re: Props for Hovercraft) —Paul Kleniewski
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| | | | | | "Tobbe Arnesson" <StPnAtM@lotek.nu> wrote in message news:H9y1Ay.8Br@lugnet.com... all your designs tobbe are very inspiring with the same major problem as my propeller :( the like to explode because the are not locked that's why i used a rubber (...) (22 years ago, 7-Feb-03, to lugnet.technic)
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| | | | | Re: Props for Hovercraft —Mark Haye
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| | | | I have this part (from <set:8855>) and I have been unsuccessful in my attempts to power it to any significant speed. The problem is that the prop and z24 gear are permanently molded to a 3L axle which goes through a 1x4 Technic beam. Having only one (...) (22 years ago, 7-Feb-03, to lugnet.technic)
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| | | | | | Re: Props for Hovercraft —Eric Sophie
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| | | | | Ho Mark, This presents a significant problem. I always engineer my gear-trains to include a double "axle grab" on both sides of a gear so the gears flow smoothly. Without that extra stud worth to help anchor the Airscrew, yep could be a problem. But (...) (22 years ago, 7-Feb-03, to lugnet.technic)
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| | | | | | | Re: Props for Hovercraft —Mark Haye
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| | | | | | You inspired me to tinker a bit, but I am still unsuccessful. Putting gears around the z24 to help stabilize it is problematic because, at standard LEGO distances, there is sufficient space between the gears to allow the z24 (and the prop axle) to (...) (22 years ago, 7-Feb-03, to lugnet.technic)
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| | | | | | | | Re: Props for Hovercraft —Ross Crawford
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| | | | | | | (...) What about attaching another 24t along the same axis with a friction pin, then having an axle in that? You'd probably need to drive both to stop rotation at the friction pin. ROSCO (22 years ago, 7-Feb-03, to lugnet.technic)
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| | | | | | | | | Re: Props for Hovercraft —Mark Haye
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| | | | | | | | Yes, I had tried that. I was unable to prevent all the rotation at the friction pin, and even a small amount of movement there caused significant wobble/binding. Mark Haye "Ross Crawford" <rcrawford@csi.com> wrote in message (...) (22 years ago, 7-Feb-03, to lugnet.technic)
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| | | | | | | | | | Re: Props for Hovercraft —Kevin Clague
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| | | | | | | | | How about inserting the 24T gear into half a large turntable, and securing the other end of the turntable using axles. I know this gets very large where you don't want to get large, but it might provide stability in ways the other solutions do not. (...) (22 years ago, 7-Feb-03, to lugnet.technic)
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| | | | | | | | | | Re: Props for Hovercraft —Ross Crawford
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| | | | | | | | (...) Well I did a little test, heres the pics: (URL) that the propeller shaft is cylindrical, not "x" axle-shape, so friction is much greater than standard axle. It worked reasonably well, even with no lubrication and old batteries. I reckon with (...) (22 years ago, 7-Feb-03, to lugnet.technic)
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| | | | | | | | | | Re: Props for Hovercraft —David Arnon
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| | | | | | | | | (...) Nice design. Oh man, the design of the 24t gear at the back of this propeler is realy lame. That whole part is very un-legoish. 1) Perhaps you could use the old friction connector instead of the new one: i.e. part 4459 instead of part 2780. (...) (22 years ago, 8-Feb-03, to lugnet.technic)
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| | | | | | | | | | | Re: Props for Hovercraft —Mark Haye
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| | | | | | | | | | You guys are bound and determined to spend my whole weekend tinkering on this, aren't you? ;-) I reproduced Ross's setup using a gray peg, a black friction peg, and an old black friction peg. I still get what I consider pretty poor performance (with (...) (22 years ago, 8-Feb-03, to lugnet.technic)
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| | | | | | | | | | | | Re: Props for Hovercraft —Øyvind Steinnes
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| | | | | | | | | | "Mark Haye" <markhaye@netzero.net> wrote in message news:HA05tr.EJx@lugnet.com... (...) Offcourse, we dont give up before we have succeeded :) I'm just been bitten of this LEGO-flying machine virus .... (...) old (...) hit (...) Whatever speed you (...) (22 years ago, 8-Feb-03, to lugnet.technic)
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| | | | | | | | | | | | Re: Props for Hovercraft —Øyvind Steinnes
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| | | | | | | | | | Here are photos of my most effective props until now. (URL) Steinnes (URL) (22 years ago, 9-Feb-03, to lugnet.technic)
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| | | | | | | | | | Re: Props for Hovercraft —Tobbe Arnesson
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| | | | | | | | (...) friction pin, (...) Perhaps the z24-sandwich can be wrapped with conveyor chain links? /Tobbe (22 years ago, 10-Feb-03, to lugnet.technic)
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| | | | | | | | Re: Props for Hovercraft —Eric Sophie
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| | | | | | Question: Since I don't know what the z24 exactly looks like on the prop, is it just like the regular gear? Reason I say, I'm curious, because you could use the holes on the gear to pin another z24 to it and then you'd have a place to mount another (...) (22 years ago, 7-Feb-03, to lugnet.technic)
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| | | | | | | | Re: Props for Hovercraft —Ross Crawford
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| | | | | | (...) No, it only has one pin hole, and no axle holes. Why LEGO decided to do it that way I can't imagine - all previous sets (AFAIK) used the offset axle holes (present in the old 24t gears) to connect pistons, not the pin holes. IMO that part is a (...) (22 years ago, 7-Feb-03, to lugnet.technic)
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| | | | | | Re: Props for Hovercraft —Ross Crawford
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| | | | | (...) I agree, it even causes a problem when used in the actual set! IMO this is one of the worst LEGO parts ever. ROSCO (22 years ago, 7-Feb-03, to lugnet.technic)
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| | | | | | Re: Props for Hovercraft —Stéphane Simard
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| | | | (...) Have you considered using lubricant between the 1x 4 beam and axle? I know I did, many times, but never got around to do it. Do you think it might reduce the friction enough? (22 years ago, 7-Feb-03, to lugnet.technic)
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