 | | Bohrok Gears was: Technic Turntables
|
|
(...) Speaking of which, has anyone managed to come up with a good use for those two oddball gear levers in a MOC? I'm referring to the two pieces with partial gears on the ends that originally came in the Bohrok Bionicles. Mark (21 years ago, 14-Nov-03, to lugnet.robotics, lugnet.technic)
|
| |
| | Re: Pneumatic Quadraped 242
|
|
(...) I've added a total of four polarity reversers and now it can walk forward, backward, and turn right and left (within its own footprint)! The transistions from turning to walking and walking to turning involves flipping two of the polarity (...) (21 years ago, 14-Nov-03, to lugnet.technic, lugnet.build, lugnet.robotics)
|
| |
| | Re: Pneumatic Quadraped 242
|
|
(...) That happens with large pistons. (...) I knew you would ask :^) (...) So it doesn't tip!?! The center of mass is not always in line with the center of the footprint, so it can tip to one side or the other of the down feet diagonal. Also the (...) (21 years ago, 14-Nov-03, to lugnet.technic, lugnet.build, lugnet.robotics)
|
| |
| | Re: Pnumatic Grabber arm using Large (48mm) cylinders
|
|
(...) logging machines were inspired by the elephants once used to move logs about, they seem to have similar configuration and work in a similar way. The steering is brilliant, one of the rear axles steers in addition to the model articulating in (...) (21 years ago, 14-Nov-03, to lugnet.robotics, lugnet.technic)
|
| |
| | Hooklift Truck Poster
|
|
Jeroen de Haan has kindly made a poster of my hooklift truck render and placed it on (URL) . Thanks Jeroen! I rendered the poster at a far higher resolution than previously to allow better quality prinouts; it took an Athlon XP 2000 over a week to (...) (21 years ago, 14-Nov-03, to lugnet.cad.ray, lugnet.technic, lugnet.announce)
|
| |
| | Re: Pnumatic Grabber arm using Large (48mm) cylinders
|
|
Here be grabbers: (URL) last two use the small cylinder, but I'm sure you can beef things up a bit and use the big ones. Have fun! :) (21 years ago, 14-Nov-03, to lugnet.robotics, lugnet.technic)
|
| |
| | Re: Pneumatic Quadraped 242
|
|
(...) Wow, that's massive! And a video of at least one cycle would be helpful :) Why the large footprint? (21 years ago, 14-Nov-03, to lugnet.technic, lugnet.build, lugnet.robotics)
|
| |
| | Pnumatic Grabber arm using Large (48mm) cylinders
|
|
Hi, i want to build a small pnumatic grabber for a little single rcx robot that i am building. The only problem is, i only have the pnumatic parts from the backhoe and ultimate builders set. I can't seem to come up with a design for a grabber that (...) (21 years ago, 14-Nov-03, to lugnet.robotics, lugnet.technic)
|
| |
| | Pneumatic Quadraped 242
|
|
Hi All, I just snapped some pictures of my latest MOC. It is a pneumatic quadraped that has an advanced walking gait made completely out of lego pneumatics. Instant walking, just add air pressure. Quad242's front left and back right legs are paired (...) (21 years ago, 13-Nov-03, to lugnet.technic, lugnet.announce.moc, lugnet.build, lugnet.robotics)
|
| |
| | Re: One Input - Two Outputs?
|
|
(...) The key to making this work is to ensure that there is tension at either end of the run that keeps the worm gear at one end of the axle or the other until it hits a hard stop. For example, my robot arm uses rubber bands to hold the gripper (...) (21 years ago, 13-Nov-03, to lugnet.technic, lugnet.robotics)
|
| |
| | Re: Anybody bought the 8438 Crane Truck yet?
|
|
philohome@free.fr (Philippe Hurbain) wrote in <Ho8En8.1Cyz@lugnet.com>: (...) I checked the instructions. The alternate model looks the same as in the original release (a truck with small crane), and it uses 2 cylinders. (21 years ago, 13-Nov-03, to lugnet.technic)
|
| |
| | Re: One Input - Two Outputs?
|
|
Hi! Here's something at Brickshelf that might, or might not, be of help: (URL) pretty compact. Although it feels like a dif. and a couple of ratchets would do the same thing (but not what you're looking for). (21 years ago, 13-Nov-03, to lugnet.technic, lugnet.robotics)
|
| |
| | Re: One Input - Two Outputs?
|
|
(...) Well, I think this is going to work. Do you have any pictures of the logic/gearing used downline from the transmission? I am concerned with how the worm gear makes the transition from front to back and the resulting interaction with the drive (...) (21 years ago, 12-Nov-03, to lugnet.technic, lugnet.robotics)
|
| |
| | Re: One Input - Two Outputs?
|
|
(...) That's one of the links I was trying to find the other day! Thanks. I'm not sure if it will do what I want, but I'll have to stare at it a while to find out. Keep the ideas coming, if there are more. -Duane (21 years ago, 12-Nov-03, to lugnet.technic, lugnet.robotics)
|
| |
| | Re: One Input - Two Outputs?
|
|
(...) You also might check out a construct called a Directional Transmission. This is a simple setup using a sliding worm gear that does pretty much what you are describing. Michael Powell has a web page describing his design that I used (...) (21 years ago, 12-Nov-03, to lugnet.technic, lugnet.robotics)
|
| |
| | Re: One Input - Two Outputs?
|
|
(...) One way to do that is to have a rubber-band/spring/shock holding "Output B" in it's starting position. Then, you can use a differential to move both A and B. Going forward, A will be easier to drive, so it will push A to it's limit, then B (...) (21 years ago, 12-Nov-03, to lugnet.technic, lugnet.robotics)
|
| |
| | One Input - Two Outputs?
|
|
Has anyone been able to drive two seperate outputs with a single motor? Here's what I'm looking for advice on: Step One: Motor and Outputs A and B are all in their Home position. Step Two: Motor is manually turned on and Output A is driven to it's (...) (21 years ago, 12-Nov-03, to lugnet.technic, lugnet.robotics)
|
| |
| | Re: polish version of mlcad
|
|
DL (URL) (21 years ago, 12-Nov-03, to lugnet.cad.mlcad, lugnet.robotics, lugnet.technic)
|
| |
| | Re: Anybody bought the 8438 Crane Truck yet?
|
|
(...) Did you check the alternate model? maybe it is a new one and requires 4 cylinders ??? Philo (21 years ago, 12-Nov-03, to lugnet.technic)
|
| |
| | Re: Anybody bought the 8438 Crane Truck yet?
|
|
(...) I just bought an 8438, and it also contained 4 cylinders, so it may not have been an accident. Could they be clearing out their inventory of old-style cylinders? HdJ (21 years ago, 12-Nov-03, to lugnet.technic)
|
