Is it just me, or has anyone else noticed that it appears to be impossible to check alignment as pictured if more than one pulley is installed? It appears that even if the pulleys are rotated so that the flat side is vertical, that the ball studs still interfere with the other pair of arms, which prevents checking the alignment on all three.
One thing I noticed, is that there is quite a bit of side to side slop of the bearings in the bearing mounts. This might be useable to make sure that the interrupter is centered, and may be one of the reasons that people are complaining about seeing some variations. Initially I thought it would be good to fix this, but I think we can use it to our advantage, by checking alignment before tightening the bearings. If an optical interrupter is out of alignment, the pulley mechanism can be moved sideways, until it is in alignment, and then the bearings tightened.
I found that an M3 x 10L screw looked nicer here, as then there wasn't any left sticking out.
Is it just me, or has anyone else noticed that it appears to be impossible to check alignment as pictured if more than one pulley is installed? It appears that even if the pulleys are rotated so that the flat side is vertical, that the ball studs still interfere with the other pair of arms, which prevents checking the alignment on all three.
One thing I noticed, is that there is quite a bit of side to side slop of the bearings in the bearing mounts. This might be useable to make sure that the interrupter is centered, and may be one of the reasons that people are complaining about seeing some variations. Initially I thought it would be good to fix this, but I think we can use it to our advantage, by checking alignment before tightening the bearings. If an optical interrupter is out of alignment, the pulley mechanism can be moved sideways, until it is in alignment, and then the bearings tightened.
In the future, for aesthetics, it would be nice if the LED cable could also come out the bottom.