Monday, November 30, 2009

Another update... and new schedule coming shortly

I don't have any new pictures at this point but when we post our updated schedule there will be more pictures. As far as updates on what we have done. We have our MCM done to the specifications we designed it to however it isn't good enough to be competitive yet so we need to do some modifications to it. The motor which is attached to the underside of the arm (this will make more sense when new pictures are posted, see next batch of pictures for reference) is not constrained will enough and we found the axle tends to wobble and not just rotate which causes the machine on the rack and pinion to skip and thus creating an unreliable machine. So we need to remove the wobble in the shaft and then we suspect our MCM (machine 1) will be fully operational. Also we may try as an extra precautionary measure making our MCM shorter or the shaft taller (making the shaft taller would make constraining the wobble more important). By making the MCM shorter more of the gear will connect with the rack, as it stands now only 3/4 of the gear connects with the rack and if we can get it to 100% that would be better.

As far as an updated schedule we will post a more complete updated schedule soon, however for right now..... WE need to build our second machine which consists mostly of using the band saw the drill press and the waterjet. We will cut our base out with the waterjet and then use the angle iron to cut make axle mounts and the Al rod for the axles. The most difficult task we have left is creating our hopper b/c there is still some disagreement on the best design for the hopper. However once that is figured out our machines should be fully functional and ready to be seeded.

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