If you already know what these things are then you won't need to read the next few sentences. The spindle is the thing which connects the two arms which hold your pedals. It goes through the bottom bracket, which supports the spindle with bearings in the bike frame. The crank is the arm and gear assembly on the front of the bike and you move the chain around it to then move the rear wheel.
We took every variety of these apart today and also put them back into bikes, both mountain and road frames. Lots of special tools, grease and washing of hands! Also good practice. Not very exciting stuff, but all very necessary on your bike!
I'll try to upload some pics of Ashland later. It's almost 70 degrees outside and I'm gonna get some vitamin D.................
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