belt tension results, weird spike at 50hz on 1 belt every time.

Keep getting results like this no matter what i do with the belts. Whats with the weird spike at 50hz? The rest seems very good but nothing seems to tune out the spike.
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7 Replies
h0wl
h0wl•7mo ago
I think for a start your belts are too tight
MFBS
MFBS•7mo ago
What size printer?
stormy-gold
stormy-gold•7mo ago
If axes shaper comes out well, your belt graph doesn't matter. Seems like you almost have them at equal tension. Worry about the spike if IS looks wonky
Prav
Prav•7mo ago
it matters, it's a lot easier for the input shaping to reduce one sharp peak, than a jagged mess with 100 hz range. if the X,Y graphs look like a mess it means there's hardware problem that need to be addressed, both for print quality and longevity of the mechanical parts.
stormy-gold
stormy-gold•7mo ago
Hence "if axes shaper comes out well" Ltr
Prav
Prav•7mo ago
well i've read it other way around 🙃 although it's impossible that X, Y graphs look good if the belt tension one looks like that