This design replaces the existing Y-belt bearing holder on the Mendel90. This is a two-piece design that allows for tensioning of the Y-belt similar to how the X-belt is tensioned.
The existing bearings, washers, and securing pieces are used with this new design. However, instead of an M4 screw securing the tensioner to the Dibond base, the design simply 'hugs' around the edge of the Dibond.
A screw is used between the tensioner base and sliding portion to allow for tightening or loosening the Y-belt.
I'm currently using one of the clip arms from the bulldog clips between the tensioner base and slider to set a certain distance between the two so that I can easily retension the belt back to where I had it.