"SBAER" wrote in message
...

My question concerns the crown on the pulleys. Does the tail pulley
have to be crowned as well as the head pulley?

sure does

I prefer to approximate
the crown by turning a slight angle on each end of the pulley so that
the machining can be done on a simple lathe. Does anybody have a
suggestion as to the angle and length of this chamfer?


I usually used 1/2 a degree. You get better results though with a tracking
strip welded onto the centre of the belt and a groove in the pulleys. Try
the belt supplier for details.
Tom