- A: Original configuration: just use the original belt anchors as you normally would, ignoring the slots. Or I could make the plate taller so that the top lines up with where the belt should be, and then you can wrap it around and use slot B to anchor it -- but I don't really care for this configuration.
- B: Idlers on 1/4" spacers (with washers on either side) in the holes just below the ones for the top V wheels on the new motor plates; I need Edward's drawing to confirm the dimensions.
- C: Idlers in the bottom two NEMA23 holes of the original motor plates, on the outside, with no spacers (a single washer between the motor plate and the bearing); this works with NEMA23 motors on the original plates, but not with NEMA17; it may work with NEMA17s on Edward's new motor plates (if you drill the idler holes), but again, I need the drawing to confirm.
- D: Idlers in two new holes, 39mm from the bottom of the motor plate (mine are spaced 31mm apart, allowing the belt to wrap a nice 180 degrees around the pulley). This works on either plate with either motor size.
I did not include holes for belt clamps, because I planned to use my own design, or one of several zip tie methods (such as the one I used here, except without the U-turn). On second thought, the slots should be 10mm wide to accommodate really solid 3/8" (9.5mm) zip ties.
What do you think?