Search: Posts Made By: kyleservicetech
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01-22-2016, 09:27 PM
Replies: 48
Views: 56,596
Posted By kyleservicetech

[QUOTE=fhhuber;988438] You are applying HIGH...

[QUOTE=fhhuber;988438] You are applying HIGH voltage to see if you can create a problem.


Exactly! Meggers have very limited use in our motor stuff.

FYI, before retiring, we used custom...
05-10-2010, 05:53 AM
Replies: 48
Views: 56,596
Posted By kyleservicetech

I'm not certain which kind of meter you have. The...

I'm not certain which kind of meter you have. The Megohmmeters we used before I retired were of the high voltage kind. They would apply up to about 5000 Volts DC, while measuring the DC current...
05-09-2010, 04:15 AM
Replies: 48
Views: 56,596
Posted By kyleservicetech

I just purchased a new Hacker A50-12S motor. The...

I just purchased a new Hacker A50-12S motor. The package says "Designed in Germany". Then it says, "Made in China". At any rate, its performance is identical to my other Hacker A50-12S motor. :blah:
02-06-2010, 06:58 AM
Replies: 48
Views: 56,596
Posted By kyleservicetech

Yeah, my first PC was purchased in the early...

Yeah, my first PC was purchased in the early 1980's for $1500. A lot of money then, still is. The processor ran at a blazing 4 megahertz, it had one 8 inch floppy drive, and NO HARD DRIVE. Memory was...
02-06-2010, 06:27 AM
Replies: 48
Views: 56,596
Posted By kyleservicetech

If you want a demonstration of that "slip"...

If you want a demonstration of that "slip" between the three phase rotating magnetic field, and the squirrel cage rotor, try to locate an especially powerful magnet, samarium cobalt or similar.
...
02-06-2010, 03:50 AM
Replies: 48
Views: 56,596
Posted By kyleservicetech

Something I've done over the past few years, is...

Something I've done over the past few years, is set up a particular motor/prop/esc/battery pack. Then run the motor and prop, checking its current/voltage/watts with a meter such as an Astroflight...
02-05-2010, 05:58 AM
Replies: 48
Views: 56,596
Posted By kyleservicetech

Would not be surprised, but I couldn't find a...

Would not be surprised, but I couldn't find a "Made in China" label or decal anywhere on my meter.

It's getting more and more difficult to find anything not made in China now days. I just found...
02-04-2010, 06:12 PM
Replies: 48
Views: 56,596
Posted By kyleservicetech

Danged good point. Last year, I changed a...

Danged good point.

Last year, I changed a Hacker A50-10L motor battery source from 5S2P A123 cells to 6S2P A123 cells. With the same prop, the 5S2P was under powered, with 6S2P, I was exceeding...
02-04-2010, 06:09 PM
Replies: 48
Views: 56,596
Posted By kyleservicetech

Good grief, and one wonders why we have no jobs...

Good grief, and one wonders why we have no jobs in the USA, and many other countries. ????

I just purchased a new Hacker A50-12S motor. The package says "Designed in Germany". Then it says, "Made...
02-04-2010, 05:56 AM
Replies: 48
Views: 56,596
Posted By kyleservicetech

FYI, that Sears clamp on ammeter is the Craftsman...

FYI, that Sears clamp on ammeter is the Craftsman #82369, which has a 0-40 Amp, and a 0-400 Amp current range, for Either AC or DC. Most clamp on Ammeters are AC (Alternating Current) only, and will...
02-04-2010, 02:08 AM
Replies: 48
Views: 56,596
Posted By kyleservicetech

I've used that two multimeter resistance test on...

I've used that two multimeter resistance test on my various Hacker A30, A40 and A50 motors, and have found that my measurements are quite close to those quoted by Hacker. :)

The only way to...
10-13-2009, 05:53 PM
Replies: 48
Views: 56,596
Posted By kyleservicetech

Yep, been there, done that with my Fluke 87V...

Yep, been there, done that with my Fluke 87V meter. For this you will need a digital multimeter with a millivolt range such as the Eteck meter mentioned in this thread. Or the Fluke meter with its...
10-13-2009, 02:51 AM
Replies: 48
Views: 56,596
Posted By kyleservicetech

You're right :o :o :o Sorry about that.

You're right :o :o :o

Sorry about that.
10-13-2009, 02:16 AM
Replies: 48
Views: 56,596
Posted By kyleservicetech

That 60 some watts of heat is what limits the...

That 60 some watts of heat is what limits the maximum continuous current those interrupters can handle. And thats for temperatures between minus 40 to plus 140 degrees F.

But, 800 Amperes times...
10-12-2009, 09:36 PM
Replies: 48
Views: 56,596
Posted By kyleservicetech

Yep, will be 68 this month:(:( Forgot to...

Yep, will be 68 this month:(:(

Forgot to mention, at work in the Service department we measured the contact resistance of our high voltage circuit breakers rated at 800 Amps, 38,000 volts, 16000...
10-12-2009, 09:07 PM
Replies: 48
Views: 56,596
Posted By kyleservicetech

Agreed, that is how those MicroOhmeters are used....

Agreed, that is how those MicroOhmeters are used. And, that is why you can't connect the "current source" to the motor with clip wires, and then measure the voltage drop across the clip wires,...
10-12-2009, 07:55 PM
Replies: 48
Views: 56,596
Posted By kyleservicetech

Measuring Brushless Motor Resistance (Two Digital Meter Method)

What is involved in measuring the winding resistance of our brushless motors?? You don't need an elaborate setup. All you need is a two or three cell Lipo, or 12 volt battery, a power resistor on the...
Showing results 1 to 17 of 17


 
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