2 HP 3 Phase with 8 # 29's

[coldspot]

While I started this a few months back,

Work, no shop and other things keep me from finishing it.

When I tried to use a pop bottle shrink wrap the rotor didn't fit.



I got it back apart and with out the wrapper it fits very close

Of course I didn't repack the bearing and will have to do this all over again.



This was only a TEST fit and  since I have it together-

I hooked up in 2y and 3 25Amp full wave bridges-

with two multimeters I can't get a reading

For a load I used a 1157 bulb and soldered bolth inputs to the pos wire

I read a while back about using a shoe lace to wrap around the shaft

and test pulling on it.

I used a 1/4" rope and this will get the bulb lit-up, No meter reading

I can just give it a 1/4 turn on the shaft with fingers and the bulb

lights up.

This only lights up about like the 28 Lb stepper motor I have,

maybe less.

When I take it back apart to re-pack the bearings, (I'll be using MARINE grade

Jet Pump grease), I'd like to get the shaft drilled and tapped for blade/hub

mounting.

That would require another trip to catch machine shop guy, and that can

be tuff sometimes.

Today I got offered a new better job that will have me working 5 AM to 2-3 PM.

Because I have been getting to the shop at 7 AM and getting home 6-7-8-9 PM,

And they try to only want to pay for 8 but some times up to 13 hours and

at an amount lesser than told when starting and leaving a better paying job.

I TURNED IN MY 2 WEEK NOTICE This morning!!!!!!!!!!!!

~

New job also year round with bennies and 401K,!!!!!!!!!!!!!!!!

And paying better than crappy job I started for a friend in need.  

Just two more weeks of heII and life should get better.

[SparWeb]

Good news and bad... either way I'm sure you'll get a glow on!

Try not using the rectifiers and set the multimeter to AC volts.  Maybe the voltage that lights up the lamp isn't enough to activate the rectifiers.  Start by looking for open volts on one phase - no loads on the wires at all, just the multimeter.

[Flux]

"For a load I used a 1157 bulb and soldered bolth inputs to the pos wire"

Sorry that is meaningless to me. What is a 1157 bulb ( volts ,watts?). What do you mean by soldered both inputs to the pos wire.

The fact that you got light means that something is right but I have no idea what you have done.

If you have light and no meter readings then you have the meter on the wrong range, in the wrong place or your bulb is such a low voltage that the meter can't read it.

With a piece of string round the shaft you ought to get over 100v.

I assume your multimeter has an ac range. Try to measure ac volts between each pair of leads. If you can't measure over 10v when turning by hand something is very wrong.

Short all 3 ac leads together and if you can still turn it by hand or with the string then again something is seriously wrong.

Try these things and report back, there is no point messing about with rectifiers and other confusing things until you have a basic working alternator.

When you say 2Y I assume it is 3 phase is that right?

Flux

[Flux]

Sorry I see from the title that it is 3 phase.

What was the name plate speed on that motor and how have you arranged the magnets?

Flux

[TomW]

Flux;

An 1157 is a combination tail / brake light bulb common in U.S. cars. No idea on wattage. They have 2 connectors for the + and the shell of the base is the -. I suspect he means he paralleled the 2 elements.

Cheers.

TomW

[Flux]

Thanks Tom, that makes sense. It must be at least 6v so there is absolutely no reason not to be able to measure volts ac or dc with a good meter on the right range.

If he didn't blow that bulb with a piece of string it is a pretty poor alternator.

Flux

[Countryboy]

An 1157 bulb is 12V.  I've heard they are about 25 watts.

[Stonebrain]

Hi coldspot,

Don't bother about that two weeks.

Start your new life right away and measure open voltage.

Well that's about the only thing I can tell you about it:)

cheers,

stonebrain

[coldspot]

Corredt-

1157+ auto tail/turn and stop light bulb

pos to bolth elements and neg to body

NOT getting a reading is lack of any real way to turn it at

a RPM long enough to get the meters to hold a reading

the show OL then back to 0.

I'm getting voltage and pretty good I think

Bulb does about blow up, I think one element did.

I'm happy so far with this but lacking so many things to speed up

the RE work does make me feel like I'm not getting anywhere sometimes.

I did find in my stuff, (junk) a old ceiling fan blade hub that with a bit of

emery cloth worked over the ID could fit the 7/8" shaft.

Then I would have a way to test fly some blades for voltage testing.

Just checked,

Still not fitting down enough to be a half safe way to test fly.

And the wind is blowing really well tonight, as per the rules ya know.

l8r

[vawtman]

Coldspot Do you own a drill and socket set if so find a socket that barely fits the shaft and gently tap it on.Maybe use your girlfreinds hairdryer for the load other than the 12v dc bulb.Just an opinion.Dont tell her though.

[coldspot]

vawtman-

Thanks

But I'll just keep on with this as have so far.

Last time I test flew for the fun of it,

My CMI stepper motor with 5 ceiling fan blades hooked to a little

dome light bulb and also holding the multimeter while walking out into the

road out back I just about got hurt more than I did, bulb glowing so strongly

I was sure that I'd be having glass in the face and getting it to stop

wasn't just turn out of the wind, sliding fingers up to try n grab the

pully I forgot about the bolts hanging out the rear and got fingers banged

up pretty good before I got the outside of pully into a grip strong enough

to stop the fan in the face I was growing more afraid of by the moment.

LOL

I can't put it on a tower yet so I'll wait.

THANKS

l8r

[Flux]

I am with you now. Your original comments were statements not questions.

Make yourself a hand crank out of a piece of stiff wire, wrap it round the shaft and make it grip with Duct tape and you can turn it at up to 200 rpm fairly easily.

Look forward to results.

Flux

[coldspot]

Flux-

Thanks !!!



But I'll have something soon for getting more info.

PS: I've tried to read all your posts/comments

You should add more to this and add to Diary.