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Turdan DCPM 180V 4000RPM 1.5HP Treadmill Motor | 19 comments (19 topical, editorial)

Re: Turdan DCPM 180V 4000RPM 1.5HP Treadmill Motor (3.00 / 0) (#1)
by Flux on Wed May 7th, 2008 at 02:49:16 AM MST
(User Info)

Your cut in speed is near enough. I wouldn't worry about the 3 decimal places, with the difference between use as a motor and generator it will be higher as a generator ( probably 300rpm ish).

One hp is 746W so it is electrically about 1kW out. Leaving a bit for efficiency say 1200W in at 180v gives 6.7A and that will be its continuous current rating. With wind you can overload it a fair bit as long as the brushes don't get overloaded too badly. Say 15 to 20A intermittent.

Cut in speed would suit something like a 4ft prop or fast 5ft and you can expect about 200W or a bit more for short peaks into 12v.

Flux

Re: Turdan DCPM 180V 4000RPM 1.5HP Treadmill Motor (3.00 / 0) (#2)
by farhan on Wed May 7th, 2008 at 03:01:36 AM MST
(User Info)

Thank you for your quick reply sir.

4ft Prop is the total diameter right? that means 2 ft blades. I made 3 ft blades with PVC but due to bad mounting the broke, had to cut them short and made them 2ft each now. i have 4 blades made can i put 4 or 3 are better?

After all your calculations do you think its a good motor to work with? this is my first time doing this.

The motor say 1.5HP max, some people say where max is written its not the original HP and may be quite less, is that right?

Lastly as you said it can make 200W, how long will it take to charge a 12V 145AH battery.

[ Parent ]

Re: Turdan DCPM 180V 4000RPM 1.5HP Treadmill Motor (3.00 / 0) (#3)
by Flux on Wed May 7th, 2008 at 07:21:16 AM MST
(User Info)

Yes 4ft diameter ( 2ft blades).

I am not inspired by pvc blades, I think you will be hard pushed to get much from them, that motor is a bit on the fast side. 3 blades or 4 makes little difference.

I personally wouldn't use a dc motor or pvc blades but don't let me put you off. I have been playing with wind power for a long time and passed that sort of thing many years ago. Many start that way and progress to better things or get put off with poor results.

I suspect that 1.5hp max on a treadmill motor does mean that. From the size of some of those things I can only believe it is a very short term rating and continuous it may be nearer 1/2 hp.

"Lastly as you said it can make 200W, how long will it take to charge a 12V 145AH battery. "

I doubt that you will see 200W often or for long. I can't even give you an estimate of charging time, but you would probably need to base it on 10 -20 Watts continuous.

Don't expect much any you won't be disappointed, it's not going to power a house.

Flux

[ Parent ]

Turdan DCPM 180V 4000RPM 1.5HP Treadmill Motor | 19 comments (19 topical, 0 editorial)

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