How can i interpret this...
Recently fired up my V3 500 and installed ratos2.0 , trying to figure out whats the issue with my graphs.
54 Replies
It looks quite good in my uneducated opinion :). There is something going at 125hz on the lower belt. 125 Hz is typically something on the printhead thats loose and vibrates. Run a resonance test as well
Id give the upper belt a small twitch to tighten it, bring it up to the lower belt. A quarter turn maybe?
continuing-cyanOP•15mo ago
it could be my cable harness
I wouldnt know ... wouldn't that show on both?
either way id run a resonance test as well
continuing-cyanOP•15mo ago
will do ty
continuing-cyanOP•15mo ago
continuing-cyanOP•15mo ago
still cant figure out whats happening at 125:D
Default EVA with printed parts etc? Is your printer unmodified?
Other than that, it looks really good in my opinion
PS. Were your fans running?
continuing-cyanOP•15mo ago
its the default eva3
nope no fans running
set your hotend to 50C, and partfan to 50%. makes them go BZZZZZZ!
try again
continuing-cyanOP•15mo ago
i havent updated to the "ratrig" toolhead thinggy
oky
the resonance test
you can set a limit to the frequencies
and only test 100 - 150 for example
or wahts the upper limit ...
135?
not sure something like that
continuing-cyanOP•15mo ago
last night i tried to either tighten or loosen the belts
to get em more closely aligned
but thats the best i could get in about 2h of fiddling:))
its a 500 afterall:P
I think thats looking good like that
continuing-cyanOP•15mo ago
retesting now with extruder fan and part fan running
dont usually go above 50% partfan anyway with that beefy boy of a cooler
fans that arent spinning tend to rattle, this prevents them from doing that and might reduce some of the noise youre seeing
continuing-cyanOP•15mo ago
fair
continuing-cyanOP•15mo ago
continuing-cyanOP•15mo ago
looks about the same
yeh very marginal. So that wasnt it 😄
Im quite sure its in the printhead
continuing-cyanOP•15mo ago
think its the gears in the extruder(lgx lite) that rattle, started a print and if i hold a finger on the lever the rattle dosent happen anymore:))
is there filament inside?
continuing-cyanOP•15mo ago
yes but i found another issue, im redoing my belt path atm
had a few overtightened screws and it was making noise
now im checking for belt slapping while doing the resonance tests
when they stop slapping the frame ill start tweaking little by little
Good work
also check that the E stepper isnt disengaged
continuing-cyanOP•15mo ago
whats that:D
E stepper is the extruder stepper motor
continuing-cyanOP•15mo ago
wouldnt that prevent printing?
i printed a calib cube
i mean before you start the resonance test, Im not sure when / if RatOS cuts the power to the extruder stepper but if it does and disengages, the wheels might rattle as you discovered. If power isnt cut, it means it keeps a certain force on it and it shouldnt rattle
continuing-cyanOP•15mo ago
ok i understand but i think i have bigger issues than that little rattle from the lgx:D
so working on those 1st
during resonance tests belts are hitting the frame and i found some info that they should be tight enough not to slap or slap v little
so doing that 1st
continuing-cyanOP•15mo ago
continuing-cyanOP•15mo ago
progress so far
that doesnt matter
belts hitting the frame during the test is oke
dont tighten them to the point they dont do that anymore you'll be overtightening them
continuing-cyanOP•15mo ago
then i dont understand how to tell when they are 2 tight
fml
hang on i have something for that
need to look for it
and its free, fast, easy and doable 😄
Overtightened belts may ruin steppers, not just the belts. Theres a limit on how much radial force the stepper axle can handle
continuing-cyanOP•15mo ago
upper slapps at 35hz and at 100 ish
I have a 300 and it does that too
its only a test so dont worry about it
go through the pdf it will help you get it in the right area, then use the belt tension graph to match them and you'll be fine
continuing-cyanOP•15mo ago
lower slapps at 50 a bit and at 90 but f small
lets see what graph comes out now:)) ffs
think i overtightened lower
or mby it slaps less because of the belt path
continuing-cyanOP•15mo ago
I have no experience with 500 so I dont really know whether those numbers are reasonable or not
continuing-cyanOP•15mo ago
but if i wanna make the blue line go up i gotta loosen or tighten
im getting confused tbh
tighten it. However, keep in mind both belts are linked through the printhead so tighen one also tightens the other. I usually tighten one and loosen the other
continuing-cyanOP•15mo ago
so i should loosen upper and tighten lower
thats what I would do, (without knowing how tight they already are)
i seriously recommend you take your time and go through the doc if you havent already
continuing-cyanOP•15mo ago
did look at it ill try it
ty for ur time anyway:D
youre welcome 😄
continuing-cyanOP•15mo ago
continuing-cyanOP•15mo ago
peaks are aligned but not same height:)))
continuing-cyanOP•15mo ago
Looks a lot better!
still some difference in relative belt tension though
continuing-cyanOP•15mo ago
well figured whats causing the wierd belt tension differences
the back of the EVA is cracked:))
right at the lower belt tension point
now do i print a back replacement and keep eva3 or just go for the ratrig toolhead upgrade:))
well ordered a full toolhead upgrade, 1 it fixes my cracked crap(ill change the belts ofc with the upgrade) and i also wanna move to 0.6 nozzle UHF
try again man you helped a ton, havent printed in about 8 months and its been tough learning new and old shit:)
just wanna get the printer semi "functional" to print the toolhead mount 😛
Sounds good! Hope that solves your issues.
Always glad to help! 😄
continuing-cyanOP•15mo ago
do you have the new toolhead?
i cant figure out if its height is setup for the UHF or the HF
someone from the toolhead thread replied its designed for the UFH setup
so perfect:) i wanted to move to 0.6 uhf anyway
no i upgraded to the vzbot with their hextrodort extruder and replaced the stepper mounts with brs engineering motorblocks with built in tensioners