Friday, February 02, 2007

JIm is a welding master

Duh. Ok, we all knew that. Still, he continues to amaze me! Tonight he welded the main platform for one of the ramps. In addition, he welded the two sides of our tower of power, complete with homemade L-brackets that will allow us to adjust the placement of the tower on our chassis. Our real robot is still looking pretty skeleton-like, but it's beginning to take form!!!

In other news, we got our 72 tooth sprocket today. Some funky stuff going on with a couple of teeth, but according to Jim, "the chain doesn't care," so we're ready to proceed on that front. Some folks also worked on prototyping with wire mesh on the ramp. Jim has also suggested a thin sheet of aluminum (for Kersten, preferably one that makes cool sounds).

To buy (this is also in my notebook, which isn't with me, so I may be forgetting something):

ALUMINUM ROD (to replace the steel one we're currently using for arm)-3/4" diameter, I have a part number (mcmaster)

Hinges for Ramp--Kersten and I started working on this, considering what kind we want at each joint on the ramps ("leaves lay flat" hinges, etc.)

Two 1/2" shaft collars (I think we may have some of these, so let's check first)

To find out:
-Do our current coil springs on ramp work without a pin in the spring hinges at that joint (in other words, would the coil springs with springless hinges provide sufficient ramp-unfolding action)?
-What's our status on weight? (the main platform of a ramp that Jim welded for us is 3.8 lb, so we're already at a total of about 40 lb for the welded frames of both ramps, the tower of power w/o the arm, and the chassis frame).

Lastly, DO YOUR ROBOTICS HOMEWORK!!!! IT'S *REALLY* IMPORTANT. We need a letter from EVERY one of you!

Here is the link to the specifics of the assignment, again, just in case:


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