|
|
 | | Re: The Big Lift
|
| (...) Depends on construction technique. For my small mobile crane the construction I used meant the boom was significantly weaker than normal (bending-wise), and in fact when it failed, even though I was watching closely, it went so fast I was (...) (22 years ago, 19-Aug-02, to lugnet.technic)
| | | | | Re: The Big Lift
|
| Great Crane! I am so jealous of the amount of bricks and plates you guys have. (...) That's what I keep finding. The hardest part of the crane to get strong enough tends to be the base/outriggers/crawler frames. The boom is easily strong enough. You (...) (22 years ago, 19-Aug-02, to lugnet.technic)
| | | | | Re: A better device for tank treads than the adder / subtractor
|
| Dean, the clutch idea works perfectly! I make a simple drive base like the one in your post using the clutch gear, added a couple of motors, tested it using a couple of dual-switch battery boxes, then tested it with an RCX and a remote. It drives (...) (22 years ago, 18-Aug-02, to lugnet.technic)
| | | | | Re: The Big Lift
|
| (...) You have to look very closely at the crane, and pay careful attention to it as the lift progresses. I first take the slack out of the lifting lines, and then reel in the line in short bursts. Slowly, but gently, the object will begin to lift. (...) (22 years ago, 17-Aug-02, to lugnet.technic)
| | | | | Re: The Big Lift
|
| TJ, How do you tell when the crane is about to fail? I can only imagine how heart-breaking it would be for it to actually fail and break the crane or to break pieces. Roy (...) (22 years ago, 17-Aug-02, to lugnet.technic)
|
|
