V-Minion Y-axis slipping

Howdy, My V-Minion's Y axis is slipping if I push acceleration anywhere north of 5k mm/s^2. I really don't know what could be causing this. I am using a BTT SKR2 with TMC2209 stepper drivers and the stock V-Minion LDO steppers. I tried putting it on top of a 35lb concrete paver and making sure the steppers were configured for active cooling. Any help would be greatly appreciated.
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4 Replies
optimistic-gold
optimistic-gold13mo ago
Here's something resembling a benchy attempted ~30k mm/s^2. As you can see, the X axis had barely any issues if at all, while the Y axis was all over the place. Ok so theres definitely something SEVERELY wrong with this printer, I have pretty much no issue pushing around the Y axis when its supposed to be locked in place update: pretty sure that was an unrelated issue with the pully not being tightened. issue still happened before I loosened the pulley and forgot to tighten it though
Alosnah
Alosnah13mo ago
Are you running the drivers in stealthchop mode? I solved the issue when turing back to spreadcycle mode.
optimistic-gold
optimistic-gold13mo ago
I dont think so, but let me check Running grep -r spreadCycle . yields no results, but the line for enabling stealchop in printer.cfg is commented out
Alosnah
Alosnah13mo ago
spreadCycle is the default I believe. Stealthchop is not part of the problem you are having if it is commented out.
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