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Discussion in 'Guides, Mods, and Upgrades' started by Michael Frampton, Sep 12, 2016.
Anyone got a definitive answer for excessive x and y movements yet ?
This randomly started happening to me - my solution was to put a much bigger (80mm) fan, directly over RAMPs board. The problem seemed to be the stepper drivers overheating, and that fixed it for me.
There can be multiple reasons, the drivers as said above, grub screws on the motor pulleys being loose. I think I had mine skip due to the Y-axis rod sliding back and forth and the grub screw hitting against one of the screws on the bearing mount. I tightened everything up and put the heat sinks on my drivers, so far so good.
Maybe il go for heatsinks then.but may be changing to drv8825s..not sure of the benefits. ..any ideas? ? Thx
x and y stepper pulleys have had loctite 648 dripped into the flat on shaft and in threads.basically permanently bonded. Could not remove them if i wanted to !
I have a drv8825 with a head sink on Y and it skipps too. when printing around 70 mm/s , ok I have the cover open but a 92mm 12v fan is blowing from the right side over and a little under the Rumba.
It's an old fan and not the strongest (crappy one
But I'm not sure about the voltage, just replaced orginal with the drv8825.
Been told not to run over 50mm/s..seriously considering board upgrade; )