I frequently use spools of varying widths on the same winding system. Re-setting the traverse end stops every time I switch spools takes too much time. Is there any way to avoid this step?

Fig. 10

Yes. The Amacoil/Uhing FA System uses a "light barrier" to electronically detect spool flanges. When the flange edge breaks the barrier, it triggers a pneumatic solenoid which turns the mechanical reversal lever on the Amacoil/Uhing rolling ring drive. You never have to set the end stops and you can use spools of any width. To install an FA system on an existing Amacoil set-up, you should consult an Amacoil applications engineer.