My team has never worked with sprockets before so I went to look into them. When learning about the different chain types, I decided to look at
Wikipedia. I noticed that there was x0 chain (normal chain), x1 chain (lightweight chain) and x5 chain (rollerless chain). What's the difference between roller and rollerless chain? Why would one want 'rolling' bushings instead of non-'rolling' bushings? I notice that most sprockets on Andymark use x5 chains. Is there a reason for this? Is there a good resource I could use to help me learn about the different types of chain/sprocket?
In fact, one of our volunteers just found out about the entire FIRST program two weeks ago and had so much fun on Thursday that he came back on Friday to help us again! - KathieK [more] 
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