Z Drive Belt Tensioner Not Tight Enough

[Eximius2286]

Hey Guys,

 

Wanted to get some feedback from the community. My Z-Drive belt tensioner isn't applying enough tension to the belts. When I push on the belts it feels loose and sloppy. Any suggestions here?

[Flopalop2]

This happens to some people but I haven't found a solution yet. Causes QGL failures occasionally. I might redesign the part... hopefully i get to it and post it.

[TitusADuxass]

There are some mods out there that address this issue.

 

[TallGrass]

I had this same problem. It was caused by the bottom extrusion of the frame sliding up out of alignment. It causes the z motor mount lean to inward and takes tension off the drive belt.

I may have caused it by over tensioning my z belts. I had to loosen everything and realign the frame. I torqued the bolts that thread into the ends of the extrusions as much as I felt comfortable, but there isn't a lot of grip there.

It might be prevented if the z drives mounted to both bottom extrusions, across the corner, to more or less lock the bottom frame rails to the corner rail. Or maybe don't go bananas when you tension your z belts.