Y always low
Vcore500
Dual MGN9
Vz Printhead CNC w/toolboard.
Basically I cant seem to get my Y axis high enough, my graph looks pretty good for what I can tell ( I know there a bump in the 125 section). Is it that its too tight, or too loose? Addtionally I get a ZV as the recommended one, so its very clean IMO
8 Replies
Your X and Y belt tensions look very even. What size printer do you have?
For a 300x you should be around ~50 and ~75 Hz for Y and X respectively. Generally, low frequencies indicate high mass or loose belts.
vcore 500, with dual gantryless mgn9, with m2 tensioners in the back. I dont know what was more important but my graphs never looked as good until i did all the mods, which i did at the same time.
I have a vcore 500
Different belt tensions for X and Y?
I thought they must be the same frequency?
no no no, there's no such thing as X and Y belts on corexy, because both belts and motors are engaged in X or Y moves.
both belts should be tensioned to the same level.
the frequency on X and Y graph isn't showing belt frequency, and usually on corexy systems The resonant frequency in Y direction is lower because more mass.
The 3rd graph shows relative tension between belts.
I should have said upper and lower not x and y.
I see the printhead moves diagonally when testing each belt.
So the belt resonances for upper and lower should not line up? I had been trying to set the belt tension so that the measure_corxy_belt_tension graphs had the same peak...
measure_corexy_belt_tension should align, preferably both in frequency and amplitude.
frequency is more important one, amplitude can differ if one belt is slightly longer than the other
Right. That's what I thought. But I can't get them to line up. I get them to the same tension using a tuner app. But if I get them to the same peak frequency on the graph then they ring out in a "pluck" test at totally different sounds (frequencies).