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#16
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Re: 2.25 HP motor... what to do?
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:Take it apart and see what makes it tick. |
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#17
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How much does it cost and where'd you get it from. Two of these would be enough for my electric vehicle
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#18
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Oh wait. Just remembered. you got them from a treadmill!
My faux pas ![]() |
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#19
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Re: 2.25 HP motor... what to do?
Lots of people get those, in fact:http://www.ebay.com/itm/Pro-Form-Ico...em19e4 a397a7
That is the exact motor same flywheel and mount. Just put "2.25HP treadmill motor" into eBay. Last edited by jman4747 : 09-11-2013 at 00:52. |
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#20
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Nice! That gives me a boost in looking for the proper motors for the DevyashMobile!
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#21
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Re: 2.25 HP motor... what to do?
Benchtop milling machine spindle motor upgrade. Zoom Zoom.
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#22
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Just get a few more of these, a battery bank of Li-S batteries and zoom off in a go-kart at 60 MPH!
![]() Just, don't get into a car accident going on the highways (In PHX, everyone drives at ~80MPH, so you would be outmatched by a car) ![]() |
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#23
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Re: 2.25 HP motor... what to do?
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I thought about making a lathe out of it but never got around to it. |
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#24
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That's a nice idea. However, don't make it just a lathe! Make it into a CNC lathe by getting a couple more motors. Also, just build the motor controllers yourself from H Bridges cause Im guessing that you are aiming for something cheap!
Safety FIRST! ^^I forgot where I heard that quote^^ |
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#25
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Re: 2.25 HP motor... what to do?
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#26
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Re: 2.25 HP motor... what to do?
I'd be happy with a drill press. What sort of speeds do I need for wood/plastic, aluminum, and then steel?
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#27
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Re: 2.25 HP motor... what to do?
I found this chart online. I gives recommended rpm for various types of bits and materials. There are also many other charts like this online. I would suggest finding a way to a just the speed depending on what you are drilling.
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#28
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Re: 2.25 HP motor... what to do?
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Course the real issue is that having PWM to drive the treadmill motor does not mean that the motor remains at a fixed speed when loaded (while drilling for example). To make this really work you need to close a feedback loop like a PID controller. A motor of this power is a more than FIRST speed control can handle. |
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#29
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Re: 2.25 HP motor... what to do?
techhelpbb is correct that some sort of feedback necessary to control the speed of a DC motor accurately.
An alternative is to use a 3-phase motor with a 3-phase motor controller. The motor RPM will follow the output frequency (not the PWM frequency) up to the maximum torque rating of the motor. Add a 10-turn potentiometer and you get infinitely variable speed without changing belts. It worked great on the drill press at the last place I worked at. |
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