 | | Re: New MOC: large crane
|
|
(...) Hey that is spectacular. Big Big Big. Awesome how you used technic turntables for the tread drives. Nice solution. The height is impressive as is the cable guides and technic structure throughout. Great job! e (20 years ago, 31-Aug-04, to lugnet.technic)
|
| |
| | Re: electric pneumatic valve actuators?
|
|
(...) Joe, I have developed an air solenoid solution that is almost ready for market. Look at (URL) send me a note if you are interested. (20 years ago, 27-Aug-04, to lugnet.technic)
|
| |
| | Re: TJ's 10 Story Crane
|
|
(...) Ah, finally! Someone noticed my new crane :-) I missed everyone this year! Sorry I couldn't make it, but rest assured, I'm still in the crane-building business. -TJ (stuck in Houston) (20 years ago, 27-Aug-04, to lugnet.technic)
|
| |
| | Re: electric pneumatic valve actuators?
|
|
(...) In my Injection Molding Factory I have built the equivalent of an electrically operated 3-way spool valve. It's expensive. I spent much time trying to simple it up, but a 3-way valve is not easy. Look here: (URL) the same page there is a cute (...) (20 years ago, 27-Aug-04, to lugnet.technic)
|
| |
| | Re: electric pneumatic valve actuators?
|
|
(...) Sounds cool -- that's the sort of thing I had in mind, though I couldn't find solenoid valves for less than $70 or so, which is just too much. A reasonable price in my book would be something like $10 per valve, or if it's already adapted for (...) (20 years ago, 27-Aug-04, to lugnet.technic, lugnet.robotics)
|
| |
| | Re: electric pneumatic valve actuators?
|
|
(...) I've always thought a valve with similar form factor to a large cylinder, that works like a steam engine valve (URL) would be really nice. It would probably have significantly less resistance than a standard LEGO valve, and more importantly, (...) (20 years ago, 27-Aug-04, to lugnet.technic)
|
| |
| | Re: electric pneumatic valve actuators?
|
|
(...) I got thinking about this. My first thought was to use a worm gear and a slip gear to pinch and unpinch the tube. This would probably work, but would not give you what you want. You need a valve that will exhaust the flow to a different path (...) (20 years ago, 26-Aug-04, to lugnet.technic)
|
| |
| | Re: electric pneumatic valve actuators?
|
|
(...) What do you feel is a reasonable price? In the next week or two I should have the first prototype built of a pair of commercial solenoid valves adapted for LEGO/RCX usage. They'll be 9v, and around 1.1 watts. It will be 2 3-way valves, one for (...) (20 years ago, 26-Aug-04, to lugnet.technic, lugnet.robotics)
|
| |
| | TJ's 10 Story Crane
|
|
Since TJ could not attend Brick Fest 04 this year, he send his new crane for display. It was so large we had to set it up in a vacant lot down the street from Rocklands so we could compliment it from the patio. (URL) e (20 years ago, 26-Aug-04, to lugnet.technic, FTX)
|
| |
| | Re: electric pneumatic valve actuators?
|
|
(...) How about one operated by folding or bending the pnematic tube itself (the same way you can kink a garden hose to turn it off temporarily while waiting for your sister to come around the corner of the house and... oh, never mind). I suspect (...) (20 years ago, 26-Aug-04, to lugnet.technic)
|
