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Unread 24-01-2005, 23:10
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Madison Madison is offline
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Re: pic: 488 Arm Prototype

Quote:
Originally Posted by Stephen Kowski
I imagine you aren't lifting the robot in the air just some tetras.....good luck
Two tetras at the end of a 60" moment arm exert about 100 ft./lbs. of force and that's a lot like lifting a robot, actually. If your piston pushes against the arm anywhere within 12" of the point of rotation, it's actually more work than lifting a robot.

Quote:
Originally Posted by M. Hicken
im sure im going to get chewed on for this, but there are the students? (sic)
The students were probably eating lunch. Mentors don't have time for that.

Quote:
Originally Posted by Mr. Ivey
Just to re-state the obvious... that is a whole lot of air being used
This was the first iteration of a prototype that has since been reworked to require less air reserves for its operation as well as shorter stroke, smaller bore pistons. Also, we tried to take advantage of the implicit binary nature of pistons and use it to our advantage rather than pursue further complicating the mechanism by trying to stop pistons in mid-stroke.

I have Inventor models of the newest iteration that are incomplete, but perhaps I'll share those sometime soon so that people might see how the design is progressing.
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