big peak on 35hz on y axis help :/
Hi, i am tuning my v core 4 400mm and i am stuck with problem that my gantry is shaking like crazy on around 30-35Hz which gives me horrible accelerations . I used real time analyzis to test that frequency and i found the carriage is shaking the most , if thighten the belts then whole gantry is shaking.

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Meanwhile the x graph looks ok to me . One peak at 65 Hz and gives me 16k acc
Did you resolve this? My graph looks very much the same
Unfortunately not
could be to much toruqe on the XY - connector screws, the ones hold down by a locknut
Have you figure out the issue for the 35Hz peak?
this is odd. I have the exact same issue
I have found that my screw on the motion system are skew by around 1mm : M5x45 and M5x85 Cap Head Screws.
I have ordered new ones. I will test them next week. I will see if it comes from that issue...