[Oblarg]

How about cheap plastic HTD/GT2 pulleys of varying tooth counts with both round and hex bores and versa-hub attachments?

Pretty please?

Other thoughts: Flanged bearings where the center circle is raised higher than the flange (this really bugs me about the current ones), gears with bores other than 1/2'' hex (as mentioned earlier), traction wheels smaller than 4'' (Colsons can be a pain to mount to), spacer stock for hex and round shafts (the delrin washers are nice, but stock material we can cut to size would be nicer).

I'd also like to see someone selling something like a quick-disconnect bushing that works with a standard 1.875'' bolt-circle and clamps onto a shaft, rather than requiring keystock and set screws or shaft collars.