Growler DC Generator Starter Armature Testing

How does the armature growler really work? How does one interpret the "hack saw blade" test? Is there any other way to tell if the armature has shorted windings? I have seen several videos and articles that try to explain it, but here I hope to show 3 ways to evaluate an armature for inter winding short circuits.
More at: www.spaco.org

[@ianaristotlethompson4186]

Years of mystery about the growler, gone. Thanks for an informative video.

[@kjellgilje]

Very good instruction - also the clear voice made it easy for me in Norway to understand all! Thank you!

[@Okie-Tom]

I have just got myself a growler. Your video was very helpful. Thank you.

[@cadmancadman1506]

Best rendition of this lesson on KZbin. Thanx!

[@HaloWolf102]

This is very similar to whenever I built a welder from a microwave transformer. All the problems, and observations I made. Match up exactly to this 'Growler'. The dead give away was the two triangles with separated metal plates, and with the vibration, and the increase in temperature part of an armature, makes me almost 100% sure that a growler is just a transformer, with an alteration in design. I was fumbling around playing with high amperage as a kid, and I am surprised I didn't die. However, thag experience lead to me understanding this amazing machine. As well as the explanations given to me by multiple hosts of this contraption. Thank you for your wisdom.

[@billpayne4502]

Great video! Nice to see good vs bad ones!

[@dwayneoxford9719]

Thanx! Didn't know about the heating test. Plus most folks don't do a bad armature which is what is really needed.

[@blitzroehre1807]

Excellent video! That is exactly how my boss taught me as an appie 35 years ago. Except we didnt have a luxury infrared thermometer, so I was taught to check for hot windings with my finger. And if the winding was too hot, then that was my bad luck, haha :-D

[@4O4FileNotFound]

Very well done. Thank you.

[@curtis133]

very informative, thank you for your time, worth watching :)

[@urgentcareguy3]

Interesting video : ) Thanks for the share

[@fabismon]

nice job it's very useful

[@adarshverma4438]

very informative

[@socalRooster]

I think I seen one of those at a swap meet years ago ...huh cool video

[@healthymixzemason1397]

I nice video..I have a started that doesn't work when the engine is hot but the brushes are good I could never find out the problem

[@leinadalan]

Nice vid. I have a couple growlers that hardly get used. It's a shame its almost always cheaper to just throw the old away and buy new. Especially when a customer is paying...

[@bobengelhardt856]

Would an ohmmeter show the shorted windings? Or can it only be found with a growler? Thanks, Bob

[@frenchcreekvalley]

Technically, yes, I guess. But the resistance of short pieces of heavy copper wire is very small, requiring an excellent low-ohms meter. 10 feet of 12 gauge wire has a resistance of only 0.016 ohms.

[@kennethkondrchek697]

Hi, would the tests that showed the armature was shorted by using the growler and hacksaw blade also be tested as effectively with an ohmmeter?

[@frenchcreekvalley]

If the armature windings were shorted to the armature, then yes, an ohmmeter would tell you that. But, unless you have an expensive MilliOhm Ohmmeter, you probably can't tell if a couple of windings are shorted to EACHOTHER. If you check the resistance of your ohmmeter by shorting its leads together, and it reads more thatn 0.00 ohms, then NO. Note: I will accept arguments to the contrary, but I think that's why the growler was developed in the first place.

[@leonelvasquez1085]

tendria los datos del growler si lo pudiera compartir seria de gran ayuda

[@jamessanford2483]

In your magnetism test, it was not clear to me which is good and which is bad - does no attraction of the blade indicate no shorts i.e. a good armature?

[@frenchcreekvalley]

Yes. From my observations, lack of attraction of the hack saw blade to the armature indicates no internal shorts. Of course, you would still want to check for shorts from any commutator segment to ground.

[@cometrider2000]

Sorry the bike with the generator was built in 1968 , and has 150,000 miles on the bottom end , the top end has been rebuilt once that I have seen .

[@ODIN223]

Can I do a core loss test with winding in it ?

[@frenchcreekvalley]

Sorry, but I can't help you there. I did google "generator armature what is a core loss test?" and got lots of interesting hits.

[@cometrider2000]

Almost lost knowledge !! I was show how to use this tool when I was 12 . Last time I used this tool was to check a generator on an American made motor cycle ; which are made so poorly that your lucky if they can run 25,000 miles , with out suver problem !!! Poor Country

[@cliffordshaw3032]

Where can I get one to buy

[@frenchcreekvalley]

I just googled "Growler type armature tester" and got 3 hits from Ebay, with prices ranging from $50 to $170.

[@junajolopezgonzalez391]

lo.que.esta.comprobando.son.las.corrientes.inducidas.en.las.bobinas.del.rotor.para.detectar.cortos.efecto.foucault

[@frenchcreekvalley]

Hello Junajo. No se habla Espanol. Here is what i think you asked: What are you checking? the currents induced in the reels (coils?) of the rotor for detecting short effect (circuit) eddies (eddy currents?) If this IS your question, I don't know A lot more current flows through shorted coils, heating up the armature. Since we are using 60 HZ to power the growler, which is essentially a transformer primary, there must be some eddy currents produced as we add that armature and its coils which act as a transformer secondary. Maybe it's the shorted turns that reduce the eddy currents allowing more current to flow than would happen with a normal armature.. I think there's an opportunity here to add an AC ammeter into the primary circuit to see what actually happens. I think some growlers do have such a meter. Pete Stanaitis ----------------------

[@ghanshyamsinghyadav3317]

growler Kaha pe milega sir

[@frenchcreekvalley]

Hello, Ghanshyam singh yadav. The best translation to english is: "where to get head?" If you mean to ask "where can a person find a "growler", then here is my answer: Here in the USA we find them in used automotive test equipment auctions from time to time. There is one for sale on Ebay right now: www.ebay.com/i/142514188926?chn=ps&dispItem=1 Many people from India look at this video, so I think they must be available in your country. Go to an automotive trade school and ask the instructors if they know where one might be found.

[@junajolopezgonzalez391]

perdone.usted.por.no.hablar.ingles.americano.me.interesa.su.trabajo.canari.aisland.espain