 | | motorized points - beating a dead horse
|
|
Hi All, Currently I am attempting to build an automated hump yard. The main problem I'm tackling is the RCX controlled motorized points. I've spent 7 hours over the last two days trying to build a motorized switch track that will run forever with (...) (24 years ago, 30-Nov-00, to lugnet.trains, lugnet.robotics)
|
| |
| | Re: motorized points - beating a dead horse
|
|
"sebarile-MOBL" <steve.e.barile@intel.com> wrote in message news:G4v1EK.6yF@lugnet.com... (...) problem (...) over (...) *forgiving* (...) <snip> (...) If you don't mind a touch-sensor, you could try this one: (URL) automated point sports 1000+ (...) (24 years ago, 1-Dec-00, to lugnet.trains)
|
| |
| | Re: motorized points - beating a dead horse
|
|
(...) (note some heavyhanded snippage) Well, it wouldn't be entirely elegant unless you mounted the mechanics under your substrate, but if you were to gear down the movement so that the white clutch gear had to exert less torque to overcome the (...) (24 years ago, 1-Dec-00, to lugnet.trains, lugnet.robotics)
|
| |
| | Re: motorized points - beating a dead horse
|
|
Try putting belt drive stage in your geartrain so it can't destroy things and use touch switches to limit the travel... (24 years ago, 1-Dec-00, to lugnet.trains, lugnet.robotics)
|
| |
| | Re: motorized points - beating a dead horse
|
|
You could try my switch - (URL) out for Lego and Models ... I build this thing using a rubber-band so you can let it run without the switch destroying itself. Just let the motor run a view seconds until the point switches it's position. Michael (...) (24 years ago, 1-Dec-00, to lugnet.trains, lugnet.robotics)
|
| |
| | Re: motorized points - beating a dead horse
|
|
Michael I can't seem to get to your URL. Can you check it and reply. I really can't wait to see what you have done. SteveB (...) (24 years ago, 1-Dec-00, to lugnet.trains, lugnet.robotics)
|
| |
| | Re: motorized points - beating a dead horse
|
|
Carlo, Thanks for the reply! Why use the hinges and 1x2 with rail plate? Is this to strengthen the housing? In my attempts I added a 1x2 plate under the 2 hole 1x6 plate and no 1x4 tile underneth. I can't seem to get to the automated yard picture (...) (24 years ago, 1-Dec-00, to lugnet.trains)
|
| |
| | Re: motorized points - beating a dead horse
|
|
"STEVEBAR" <stevebarile@yahoo.com> wrote... (...) to (...) hole (...) diect (...) This is a link to the page (sorry, not yet translated to English). Click on the pictures to enlarge them: (URL) links to the pictures: (URL) >Mario Ferrari built a (...) (24 years ago, 1-Dec-00, to lugnet.trains)
|
| |
| | Re: motorized points - beating a dead horse
|
|
"STEVEBAR" <stevebarile@yahoo.com> wrote in message news:G4vp62.Hy8@lugnet.com... (...) to (...) hole (...) diect (...) I used the hinges to keep within the "ItLUG train modules constraints". We specified the rails to be one plate height over the (...) (24 years ago, 1-Dec-00, to lugnet.trains)
|
| |
| | Re: motorized points - beating a dead horse
|
|
Thank you both for the replies. It looks like you built a mini-hump yard! Is the other small gray house a de-coupler? SteveB (...) (24 years ago, 1-Dec-00, to lugnet.trains)
|
| |
| | Re: motorized points - beating a dead horse
|
|
"sebarile-MOBL" <steve.e.barile@intel.com> wrote in message news:G4wItw.BAy@lugnet.com... (...) Is (...) Yes, Rick Clark's one. Cheers Carlo (24 years ago, 2-Dec-00, to lugnet.trains)
|
| |
| | Re: motorized points - beating a dead horse
|
|
(...) I'm not exactly sure about your setup (I'm not into trains), but how about a small pulley (half bushing) on the motor, driving a medium pulley (with the six holes) on an axle on whose other end is an 8t gear that drives a rack. That setup (...) (24 years ago, 2-Dec-00, to lugnet.trains, lugnet.robotics)
|
| |
| | Re: motorized points - beating a dead horse
|
|
Wow. How cool is that!? <grin!> Rick Clark (...) (24 years ago, 3-Dec-00, to lugnet.trains)
|
| |
| | Re: motorized points - beating a dead horse
|
|
Great tip, I never thought about using multible pulley/rubber bands! A big problem is the detent, the two at rest positions are very "sticky". Naybe more then multible rubber bands can even move. I'll give it a try. SteveB (...) (24 years ago, 3-Dec-00, to lugnet.trains, lugnet.robotics)
|
| |
| | Re: motorized points - beating a dead horse
|
|
Anyone know this address? Still hammering on solving this one! SteveB (...) (24 years ago, 3-Dec-00, to lugnet.trains, lugnet.robotics)
|
| |
| | Re: motorized points - beating a dead horse
|
|
Carlo, I built this version (see link below) and still the motor tears itself of the plates, once the gear teeth ride up on the top of the rack teeth. If I reduce the power level thru the RCX then there isn't enough torque to overcome the (...) (24 years ago, 3-Dec-00, to lugnet.trains)
|
| |
| | Re: motorized points - beating a dead horse
|
|
Try this: (URL) On! John Matthews (24 years ago, 3-Dec-00, to lugnet.trains, lugnet.robotics)
|
| |
| | Re: motorized points - beating a dead horse
|
|
(...) I made a design that used a clutch gear and fit into a house. It worked very well when the switch was "warm" but wouldn't always trip it when it had been sitting for a bit. But it allowed the throw arm to fully though the switch one way or the (...) (24 years ago, 3-Dec-00, to lugnet.trains, lugnet.robotics)
|
| |
| | Re: motorized points - beating a dead horse
|
|
"STEVEBAR" <stevebarile@yahoo.com> wrote in message news:G4z98v.KA4@lugnet.com... (...) Steve, please try with this demo code (in NQC). I think the "trick" is in the 100 ms output pulse length. task main() { // configura sensore touch su porta 1 (...) (24 years ago, 3-Dec-00, to lugnet.trains)
|
| |
| | Re: motorized points - finally got it!
|
|
Yippy I finally got it! I have created a motorized switch track that ran 100 switches via RCX without tearing the housing apart or missing firing! After 100 I got tired of counting and I just stopped it, so it might go for several hundred. It sits (...) (24 years ago, 4-Dec-00, to lugnet.trains, lugnet.robotics)
|
| |
| | Re: motorized points - finally got it!
|
|
Very cool, Steve - glad you got it to work, and I'm looking forward to the pics. I've never tried rotating the motor vertically - doh! That allows the motor torque to be shifted to a different plane than the switch throw, so you won't have to use (...) (24 years ago, 4-Dec-00, to lugnet.trains, lugnet.robotics)
|
| |
| | Re: motorized points - finally got it!
|
|
Here's some pics on brickshelf. Sorry that they are blurry, the digi-cam I have dosen't seem to do well at close range. (URL) No modifications where made on the switch! (...) (24 years ago, 4-Dec-00, to lugnet.trains, lugnet.robotics)
|
