1 Topic by kaighn80 (edited by kaighn80 2019-03-24 18:40:36)

  • kaighn80
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Topic: Motor bogs down when heater kicks in

How do peeps! I have machine number F481, I got it second hand and the only thing I can tell you is it hadn’t been used until I received it, I believe it to be a pre built one so it only needed a few little bits doing to get it ready for extrusion which I did and then ran through the checks. I’m having a problem with the motor bogging down when ever the pid kicks in.

Is there a fix for this or am I doing something wrong?
I’m extruding pla (I know it’s the difficult one to extrude but that’s all I print with and I don’t want to contaminate it with abs) I’m running it at 180 degrees and until the motor bogs down I’m getting quite consistent diameters.

Thanks in advance.

2 Reply by elmoret

  • elmoret
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Re: Motor bogs down when heater kicks in

An F serial number means fully assembled, which was only offered during the Kickstarter if memory serves, but I don't think that many fully assembled Kickstarter units were produced. At any rate, that unit is ~5 years old.

It is normal for a power supply to change slightly in voltage output when load changes. Typically this is 3-5%. This is very audible as our ears are finally tuned to frequency shifts, but a speed change of the motor of even 5% is not enough to cause noticeable diameter differences.

At any rate, if you want to solve it, the best bet is to require to use two separate power supplies.

Filastruder - the robust, inexpensive filament extruder
E3Dv6 All Metal Hotend - the premier 3D printing hotend

3 Reply by kaighn80

  • kaighn80
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Re: Motor bogs down when heater kicks in

Thanks for the reply, I thought that may be the case, with regards to the serial number could it be FA81? I’m not sure if it’s an a or a 4.

4 Reply by elmoret

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Re: Motor bogs down when heater kicks in

FA81 sounds right.

Filastruder - the robust, inexpensive filament extruder
E3Dv6 All Metal Hotend - the premier 3D printing hotend