PDA

View Full Version : [Question(s)] Motor Specs?



BDDP
05-30-2012, 08:07 PM
I'm a newb with a project that's just getting started. I picked up a brand new wheelchair motor (free!) but can't seem to find the specs (amps, watts, max rpms, etc). It's a 4-wire 24V DC motor. The label says its Motor Part Number 1165865, supplied by Huafeng with a supplier part number of ZYT-280A. Anybody out there know how I can figure out what I'll need to power this thing and how fast is will spin? It has a 'righthand' gearbox on it as well.

Thanks in advance for any and all help or suggestions!

Th232
05-30-2012, 08:56 PM
Here's another thread on wheelchair motors, might be useful to you:

http://forums.trossenrobotics.com/showthread.php?4815-24v-Wheelchair-Motor-Wiring-Question...-HELP!!

Other than that, I'd say get a variable power supply and do a voltage sweep to determine current draw and speed.

jwatte
05-30-2012, 09:13 PM
Because it says 24V, you know where to start. Get a 30 V 10 A power supply, tune it to 24 V, and see how much that motor draws in amps when free-running. You can also measure speed this way. Then, put a wheel or something on it, and stall it, to see how much it will draw stalled. I wouldn't do that for too long, as heat build-up will be high, and power draw large. Also, watch fingers or other poky things that might get smashed if the stalling experiment goes awry!

BDDP
06-04-2012, 01:50 PM
Thanks for the info and the link to the wheelchair motor thread. Good stuff.

I'm having a little difficulty locating a 110V AC to 24V DC 30-35 amp converter for a reasonable price. Any ideas/links for sourcing that?

jwatte
06-04-2012, 06:10 PM
110V AC to 24V DC 30-35 amp converter for a reasonable price.

If by "reasonable price" you mean, say, below $300, then I don't think you can get such a thing. You *might* be able to build it out of parts yourself, assuming you know what to do. High power power supplies are scary stuff -- not as simple as a 500 mA linear regulator :-)

You could maybe parallel a few truck battery chargers?

But, really, you should just get something like http://www.batterystuff.com/battery-chargers/brands/iota/IOTA-DLS2725.html or http://www.batterystuff.com/battery-chargers/brands/iota/IOTA-DLS2740.html

Y (http://www.batterystuff.com/battery-chargers/brands/iota/IOTA-DLS2740.html)ou might want to have actual batteries in the mix, though, to supply spare capacity if the load is not constant, and then use a lower-amperage charger for the average current draw. You're going to need batteries to make the platform mobile anyway, right?