horrible belt tension
ok no matter how many times i tighten or loosen my belts i can never reach two nice peaks with belt tension i only ever get this crappy chart. and when i run a resonance test they are really janky. as well. could this be an issue somewhere else i should look into.
26 Replies
genetic-orange•14mo ago
have the same problem !! found something
vicious-gold•14mo ago
yeah lol @igor9721
i bought new belts cut them to the exact same length and started again, retightened all the screws on the EVA 3.0 carriage and also ran the wire loom in the same direction as the rest olf my wire.
genetic-orange•14mo ago
do you not have this problem anymore?
vicious-gold•14mo ago
nope
vicious-gold•14mo ago
vicious-gold•14mo ago
vicious-gold•14mo ago
now these value are low compared to others, this is from my custom made printer not a store bought kit.
this is a Tronxy X5SA 500 frame, VZbot 300 X and Y motion system, a EVA 3.0 carriage and the Ratrig Tri axis Z bed system running RatOS 2.0
this is a heavily modded and custom printer, but the idea is still the same to fix it, make sure the belts are identical length
genetic-orange•14mo ago
achso then these are not standard values oke!
Thanks for the tip I'll check it out
vicious-gold•14mo ago
yeah the main differnce is the heavy 3030 extrusion for the frame of the Ratirig, thats where it truly shines above all others, its alot strong so print speeds are higher and so are Accel on both the x and y, Y will always be lower accel since its moving the entire x gantry but yeah
i also have a carbon fibre gantry so that also decreases the weight
i'll be starting my mod on my True RR VC3 500 V3.0 soon which will be modded to V3.1 fully enclosed EVA 3.0 with the BTT EBB42 connection on the Carriage and an x_tube made by @d_jespersen, i might even make it an AWD V3.1 not 100% but then youll see some crazy high accel values, probably still not even close to @helgekeck but close maybe
genetic-orange•14mo ago
cool
belt binding
thats why you dont have two peaks
something is dampening one belt out
could be belt binding, or a forgotten shim in one on the idler stacks
....
also, that you should try to get rid of the peak at 125hz
thats most likely the printer itself the wobbles, make sure the printer stands on a solid base
this peak also sometimes is caused by a loos fan mount or a idler stack issues on the xyjoiner
vicious-gold•14mo ago
i have two yellow dot squash balls that im designing feet for currently and then itll be moveds on to the solid concrete floor when they are install.
ill have to tare it all apart and take a good look for those, which is fine since ill be replacing all parts with ABS soon
also, in case you havent already, FFFM mod is made to tackle this issue
vicious-gold•14mo ago
FFFM??
Full Metall Motor Mount Mod
Printables.com
V-Core 3 motor mounts (aka FMMM) von RaYa | Kostenloses STL-Modell ...
Full Metal Motor Mount (FMMM) replace printed motor cage parts by metal plate | Kostenlose 3D-druckbare STL-Modelle herunterladen
vicious-gold•14mo ago
oh, and whos making those anf has them for sale
you just need a additional pair of the motor plates and some spacers
vicious-gold•14mo ago
does this work with the VC3 3.1 fully enclosed
yes
the printed mototr cages are the source for many belt binding issues
vicious-gold•14mo ago
oh so just a second set of the ones that come in the kit
yes
vicious-gold•14mo ago
vicious-gold•14mo ago
@helgekeck you always make my lifer so easy lmao and at the same time expensive lmao
thank you, last question can i use that for the open face AWD mod
yes
vicious-gold•14mo ago