Motor for wind

[97fishmt]

I got my new motor today!  Tested it out with what I have, a drill, a clock with a second hand and a meter.

I was able to duct tape a socket to the 1 3/8" shaft and left a flap at the end of the wrapping. 

I hooked the 3 phase ac to the rectifiers and then the meter to positive and negative.  I was able to hold the motors voltage at 26 volts with the drill.
Watching the second hand on the clock I counted the flap passing by my finger 60 times in 30 seconds.  Looks like a nice motor,
120 rpm for a 24 volt bank.

I could take out a couple car batteries and check for sure but this tells me what kind of blades to start on.  I don't have anything to try and see if I can get the rated 70 amps out of it.  I have enough experience with these motors and different blade profiles I feel confident I'll come up with a good match.

Woo Hoo!

[97fishmt]

I loaded all that stuff up in a wheel barrel and took it out to my truck.
I tested the same way with the clock and the flap.  

With it hooked to the 12 volt battery I was charging with 1/2 an amp at 30 flaps in 30
seconds or 60 rpm voltage was at 12.65

120 rpm for a new 24 volt mill will be a lot slower than I have ever done.
I'll have to build some big blades with a lot of torque and not so much speed.

[SparWeb]

I'll be down tomorrow afternoon to pick it up okay.....................................?

 

[12AX7]

What kind of motor?  Specs?  Looks heavy?

[97fishmt]

What kind of motor?  Specs?  Looks heavy?

Hi,  I kinda posted about it with the bridge rectifiers.
An ac servo motor 110 pounds 300 volt 70 amp at 1500 rpm.

Thanks
Mike

[taylorp035]

wow... I have never even dreamed of a motor that good.

[97fishmt]

  I bought one of those Harbor Freight photo tachometers today.
It should help keep my numbers straight.  It did confirm the 120 rpm for 24 volt charging.  I also checked out the little one I'm working on.  
It turns out to be 250 rpm for 12 volt charging.  Not great but with little blades it is about right.  It is only rated at 9.5 amps.  But these motors max amps are about 4.5 times the rated amps.  I could see 15 volts 40 amps 600 watts out of the little guy.

  So I bought another motor to try on that mount if I'm not satisfied with its output.
Its max is 56 amps. I can't wait to see its rpm and volt scale.  In a 8" by 8" package.

  You can't have enough meters to see the invisible workings of electricity.

Mike

[ghurd]

That thing is a Monster!

Agreed.  No such thing as too many meters.
G-