Belt vs. Chain

[DinerKid]

Well belts are lighter and in my experience they don't stretch much if at all. However they require some pretty good tension in order to run nicely. If a belt snaps it is pretty tricky to change out.
Chain is pretty heavy but you van easily adjust its length and if it were to snap it is easy to replace it.

We have always used chain on our drive-trains (sometimes 35 sometimes 25) and we have had really good luck with it. We have used belts on things like arms and grippers and I have personally liked it a lot. You can have long belt runs without worrying about weight too much. Belts also just seem to lead to a smoother motion of an arm to me.

~DK