[Jeff Waegelin]

Originally posted by sanddrag
One more reason to go with extrusion is than you can slide the pillow blocks for chain tension adjustment. We would have been in major trouble without that. Another substitute is an adjustable or sring loaded idler sprocket to use as a tensioner if extrusion is not used.

You can also do the same thing with square tube but you woyuld have to have slots milled.

You could also make those same slots with a drill press and a Dremel. I would know; we've done it for OCCRA, which doesn't allow milling machines. I would only advise it on aluminum, though... we burned out a dremel doing it on steel.