Hi everyone! Been printing over 150 hrs on two V3 Plus machines.
I have noticed that the cooling at ‘Normal’ speeds isn’t enough for overhangs, bridges, etc. I upgraded the part fan shroud/duct, but I think the fan is underpowered.
The current fan draws 0.15A at 24V DC. I found that the K1 fan draws 0.3A at 24V DC, so twice the power, perhaps. Any idea if the board on the Ender 3 V3 head can handle the extra draw or its max amps? Any other suggestions on how to improve the part cooling?
K1 0.3A Fan
Right. I am looking at the fan from the K1 though, which seems to draw twice as much current as the fan on the V3 Plus. Hoping that results in better air flow, just not sure if the board can take it.
It shouldn’t make any difference as the boards are both the same. If you want a more powerul fan (RPM), you could use a computer fan but be aware that they run at 12v and draw around 0.2A. According to Mr Ohm, running 24v should only draw 0.4A
Can you please send this stl my fan shroud is cracked and held together with super glue my discord is hi.x3 if you need a different platform please tell me im desperate to have a replacement lol, thanks
Are you running both fans already? There is one on the front and one on the back of the printhead, plus the one on the side but that is for the heatbrake
Hi Jeremy, I’m wondering if OP found out not because I’m looking for extra cooling like they are, but for availability sake. my v3 plus front fan threw a blade and finding a replacement seems to be a challenge. k1 fans seem to be more readily available but will the higher amp draw cause issue?
I did find the answer by a little DYI The fan is much stronger and works. You will have to splice the wires though. I used the fan plug from the original and matched up the colors.
I made this video to show the difference between the two fans. If it was helpful consider subscribing and dropping a like as I just recently created the channel
I believe I checked and the auxiliary cooling fan is the same amperage that comes in the K1 pack I bought (check the link in the video description above). The front part/model cooling fan is double the amperage though and putting out around double the airflow.
Been running the upgraded fan on both my Ender 3 v3 Plus for ~40 hrs no issues. I did reach out to support beforehand and they just said its spec’ed for 24V
Hey Xprint – you mentioned needing to splice the wires. Do you recall the pin out? I have a new to me V3 plus that came without it’s front fan… so I have no fan connector to splice into. I think the connector on the board is a JST SH, so I was thinking about buying a bag of them with pigtails and wiring the fan in – just want to make sure I get it right!
I replied. Yeah…i contacted support to see if there was a current limit for the board and all they told me is its spec’d for 24V You could try asking them on the creality support FB msger for an electrical diagram…they are pretty good about responding there.
When I was testing, I had it rigged with alligator clips and some tape I had a brief short, some sparks and the head lights dimmed. Still works though, so I feel reasonably confident about the pin outs I suggested
From top to bottom with the typical color on a fan…
FG/Speed Signal (yellow)
V+ (red)
GRD (black)
PWM (green)
The K1 fan has the appropriate connector for the board, it’s just wired differently than what the V3 Plus board wants. The connector uses 1.25mm spacing. I believe it’s a JST GH connector.
I wanted to unsolder the wires on the fan board instead of cutting them, but I could figure out how to disconnect the fan’s top cover from the board (press fit?). If you’re using the Creality fan suggested in this thread, just cut the wire, and flip Red with Yellow, and flip Green with Black.
Thanks again to @Xprint for doing the original homework on this mod.
The fan is much stronger and works. You will have to splice the wires though. I used the fan plug from the original and matched up the colors.
