View Full Version : Will this motor work with the HB-25 controller? Please help my wheelchair bound

01-16-2007, 03:42 PM
Hi guys,

The HB-25 motor controller says that it can control up to a 0.5 HP motor at 6 to 16 volts DC:
www.parallax.com/detail.asp?product_id=29150 (http://www.parallax.com/detail.asp?product_id=29150)

I found such a motor:
robotcombat.com/marketplace_leeson.html (http://robotcombat.com/marketplace_leeson.html)

However, this motor has a stall current of 120 amps while the HB-25 motor controller has a 35 amp surge load current capacity. Is this O.K.? Or will this motor possibly overload the HB-25 controller? I would like to install 2 of these motors on a wheelchair. If this is not O.K., please suggest a motor that will work.


Chris Savage
01-16-2007, 10:52 PM

I would check to see what actual Wheel Chair motors run for voltage/current. They may be more inline with the HB-25 current capability. Remember, even with a motor that is within specification you can exceed that by reversing the motor suddenly without ramping. For example, take a motor with a 25A stall current. If you run it full speed in one direction under load and then suddenly jump to full reverse the surge current will be quite a bit. These are the kind of things you need to be careful of even when your motors are in spec. I hope this helps. Take care.

Chris Savage
Parallax Tech Support

Bruce Bates
01-16-2007, 11:12 PM
Folks -

Here are a few surplus wheelchair motors:



Bruce Bates

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