Assembly issues with pulley - belt position.
Hi guys, I am assembling a vcore 3.1 300 at the moment. Everything went fine until I came to the step where the belts are routed / tensioned.
When I then moved the gantry / printhead, I heard a rattling noise that came from the left stepper / pulley assembly.
The belt moves up to the edge of the pulley and then jumps back. I took lots of time to adjust the pulleys height position, but no matter where the pulley is, the belt will move up and down.
When I loosen the grub screws and push the printhead left / right I can see the pulley wandering up and down. Any Idea where this comes from?
Regards!!
6 Replies
other-emerald•2y ago
other-emerald•2y ago
here you see the moving pulley when the screws are loose
afraid-scarlet•2y ago
I'm having same problem here 🤦‍♂️
wise-white•2y ago
the idlers on the lower belt route screw directly on that black anodized plates on the x and y corner. So precison shims can´t be the problem. Whats next is the frame. The two plates screw both on the back horizontal extrusion as well as one left and one right extrusion. If the left and right extrusion are not in the same plane hight wise there is a potential that there is a hight difference between left and right. But what makes me a bit suspicious is that the idler in your video appears to go up and down instead of just up or just down over the travel. The belt itself is allright and not crooked or anything? I don´t know my belts on my v-minion that came with the kit where also off and traveling arround the pully a bit like yours. I have gone for proper gates belts for my vcore3 and I don´t have the problem there...
other-emerald•2y ago
I think I solved it. Apparently my belt tension was too low. So after I tightened them they now run nicely on the pulleys
foreign-sapphire•17mo ago
I got the same issue after upgrading from 3.0 to 3.1 (500). Will try tightening the belt more!