I see in the WT Simplex manual under speed control the manual says:
Quote
Speed Control
Speed change is effected by manual movement of the belt on the pulley. 33.5 RPM on the small diameter step on the pulley.....
Is this a typo or has the clever math around angular velocity been leveraged to effect better tracking error by using a slightly higher speed here....
If this is the case, and to my ears it may well be, I won't try too hard to adjust it to 33.3333334????