Senior Member
Lumia Motor Speed Controller Wanted
Hi
Can anyone suggest some sort of speed controller for this motor? Something off the shelf would be good, or if anyone fancies making one for me...
I have a few of these motors that I bought off Ebay ages ago for running Lumia wheels. I want to use them with 4½" wheels and at that sort of diameter they're a little fast. I'm using a 240v supply here in the UK.
Cheers
Jem
Quote: "There is a theory which states that if ever, for any reason, anyone discovers what exactly the Universe is for and why it is here it will instantly disappear and be replaced by something even more bizarre and inexplicable. There is another that states that this has already happened.”... Douglas Adams 1952 - 2001
Jr. Woodchuckington Janitor III, Esq.
a quick and easy solution would be to use a gear head or belts/pulleys to slow them down.
Originally Posted by Jem
Hi
Can anyone suggest some sort of speed controller for this motor? Something off the shelf would be good, or if anyone fancies making one for me...
I have a few of these motors that I bought off Ebay ages ago for running Lumia wheels. I want to use them with 4½" wheels and at that sort of diameter they're a little fast. I'm using a 240v supply here in the UK.
Cheers
Jem
suppose you're thinkin' about a plate o' shrimp. Suddenly someone'll say, like, plate, or shrimp, or plate o' shrimp out of the blue, no explanation. No point in lookin' for one, either. It's all part of a cosmic unconciousness.
Senior Member
Thanks Swami. I had that down as an option, but I was sorta hoping for something that I could get a bit of variability on so I could get different effects :-)
Quote: "There is a theory which states that if ever, for any reason, anyone discovers what exactly the Universe is for and why it is here it will instantly disappear and be replaced by something even more bizarre and inexplicable. There is another that states that this has already happened.”... Douglas Adams 1952 - 2001
Senior Member
Looks like a mirror ball motor. IIRC they are synchronous motors, so you will need a frequency converter to control it - not cheap and not simple.
/Thomas
Senior Member
Hmmm... OK, back to the drawing board then. Anyone know of a source for cheap, very quiet, very slow mains motors ?
Quote: "There is a theory which states that if ever, for any reason, anyone discovers what exactly the Universe is for and why it is here it will instantly disappear and be replaced by something even more bizarre and inexplicable. There is another that states that this has already happened.”... Douglas Adams 1952 - 2001
Senior Member
Senior Member
I have a slow DC motor but it's quite noisy. These AC ones are nice and quiet
If I could find some nice quiet DC ones I'd happily go for them. I take it that the DC ones are able to be controlled quite easily then?
Quote: "There is a theory which states that if ever, for any reason, anyone discovers what exactly the Universe is for and why it is here it will instantly disappear and be replaced by something even more bizarre and inexplicable. There is another that states that this has already happened.”... Douglas Adams 1952 - 2001
Senior Member
LM317 and a potentiometer - nice and simple
If the motor is for 12V, a computer fan controller can do it too
/Thomas
Senior Member
I prefer pwm control for dc motors.
Pwm control can be noisier, but has the advantage of conservation of torque at low rmp.
For example a 12vdc motor at 3v may stall, especally at start up.
A 12vdc motor driven at 25% duty cycle, does not have this problem.
Senior Member
That's true, a 555 and a small fet will do it nicely. Noise can be filtered with an inductor from an old power supply and a capacitor.
Some motors will give you an annoying whine when pwm controlled. Frequencies above 20KHz will solve that.
/Thomas
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