Author Topic: Choice in the electric motor to run an alternator  (Read 11821 times)

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Choice in the electric motor to run an alternator
« on: February 13, 2008, 17:31:53 pm »
I'm thinkin about bolting a pulley on this thing and having the variable speed seems like it would be perfect.

(http://i75.photobucket.com/albums/i283/carbednotch/grinder.jpg)

What are ya'll using?

hydro

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Re: Choice in the electric motor to run an alternator
« Reply #1 on: February 14, 2008, 04:01:30 am »
that motor is 2 amps, what was it used for?

i am no expert, but that motor having such low amps tells me it cant be used to turn anything like an alternator, i could be wrong? the rpm's is good.

my motor is 1/3 horse 5 to 8 amps. what is 1/5 horse compared to 1/3 horse. my motor is just about as small as you can use. just be carefull and dont burn a good motor up!

hydro

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Re: Choice in the electric motor to run an alternator
« Reply #2 on: February 14, 2008, 04:02:35 am »
i dont think that motor will work, you will smoke it very fast! it looks to be a bench grinder, if this is true than it has no torq, i am only trying to save you your motor here!

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Re: Choice in the electric motor to run an alternator
« Reply #3 on: February 14, 2008, 06:04:05 am »
lol ya its a small grinder.
Amps needed to be higher like 10amps the only part i like is its variable speed.

What motor do you use hydro?
« Last Edit: February 14, 2008, 06:09:05 am by CarbedNotch »

hydro

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Re: Choice in the electric motor to run an alternator
« Reply #4 on: February 14, 2008, 06:10:04 am »
i use a 1/3 HP 120 volts ac 50 to 8 amp motor. sometimes you can find these motors on squirl cage fans in old shops, most places that sell pulleys sell them. here where i live a good motor is 100 bucks a pop.

1/3 HP is very weak, but it gets the job done. i prefere atleast a 1 horse or even bigger, the rpms of my motor is 3500 rpms, but if your motor is 1800 rpm's you might can use a big pulley down to a small pulley to gain 3k at the alternator.

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Re: Choice in the electric motor to run an alternator
« Reply #5 on: February 25, 2008, 02:27:41 am »
(http://i17.ebayimg.com/02/i/000/da/ef/0c18_1.JPG)


I just got this 1 1/2 hp 3,400rpm unit for $50

I cant wait to try it out!

hydro

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Re: Choice in the electric motor to run an alternator
« Reply #6 on: February 25, 2008, 02:34:07 am »
oh man you done good! i really like that motor!

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Re: Choice in the electric motor to run an alternator
« Reply #7 on: February 25, 2008, 03:08:06 am »
oh man you done good! i really like that motor!


yeessssss     ;D :D
Its got 2 different sized pulleys. One PULLEY IS 3" OTHER PULLEY MEASURES 2 1/2" DIAMETER.
(http://i24.ebayimg.com/03/i/000/da/ef/0d1c_1.JPG)