@yesschembri normally a motors field windings are wired in series with the brushes (armature). When you bypass the windings completely and apply power directly to the brushes, the armature induces an opposing magnetic field in the windings so the motor still works (at the cost of torque I would guess). Wired in this way, motors start to burn out at around 80 volts.
Also there is a way to overvoltage the motor yet save it. If motor is being cooled down to refrigerator temperature and has cool surrounding air, it will run fine overvoltaged for several minutes. I would be careful with settting motors on fire because this can blow the variac during short-out, even if it is a powerful one. This happened to my 250W variac, set on 260W (250V, 1.05A at full load). I thought amps will decline as motor gets faster but variac blew, motor label showed 0.7A on full rpm
I Enjoyed these vids very much. Infact ive got a vac motor u can have cos i was carrying the vac upstairs the other day for my wife! and the carry handle snapped clean off! All i could do was watch it go crashing down our wooden stairs into many bits! The motor is still good thou and would like to go out in a blaze of glory! Regards Mike in UK
May I ask how do you burn out a vacuum cleaner motor with just 120Vac? Normally people use variacs to vary the input voltage to the primary of a ballasted MOT or something, so essentially they have a variable transformer from 0-2Kv. Did you wire the motor incorrectly or does your variac have some built in step up transformer ( which i dont think so) Thanks, great video btw
@ElectronSpark The next time you will overvoltage motors, please put relatively heavy balanced disc on the shaft. Listen to a noise of slow acceleration. One more suggestion for fun: If the motor is universal (magnets are electric on the stator), modify the motor to be ran by separate power supply for magnet and armature, you can run it by DC somehow using rectifier. Once at full rpm, reverse the polarity of magnets, and listen it stopping with the heavy load. Very nice sound will be produced.
What you can't see in the video is that I am nearly 8 feet away from the action. Nor can you see the large multipurpose fire extinguisher I have sitting within arms reach, or the open garage door that serves as both ventilation and instant fire exit. :)
I made a concrete impeller for my next motor. It is attached to a reversible AC motor that I made. As soon as I have the time to film it and edit it I will upload it. :)
@xlaptopx I love the smell! It's been a little while since my last video and my garage is starting to smell like a garage again. I think it's time for a little more electronic incense. :)
What is the deal with all these guys on youtube blowing up good parts? I can understand a kid doing this; but an adult just wasting stuff in such a derpy fashion is beyond me.
@yesschembri normally a motors field windings are wired in series with the brushes (armature). When you bypass the windings completely and apply power directly to the brushes, the armature induces an opposing magnetic field in the windings so the motor still works (at the cost of torque I would guess). Wired in this way, motors start to burn out at around 80 volts.
Also there is a way to overvoltage the motor yet save it. If motor is being cooled down to refrigerator temperature and has cool surrounding air, it will run fine overvoltaged for several minutes. I would be careful with settting motors on fire because this can blow the variac during short-out, even if it is a powerful one. This happened to my 250W variac, set on 260W (250V, 1.05A at full load). I thought amps will decline as motor gets faster but variac blew, motor label showed 0.7A on full rpm
Sounds like a jet engine. But that was cool!
a vacuum motor is crazy. awesome!
I Enjoyed these vids very much.
Infact ive got a vac motor u can have cos i was carrying the vac upstairs the other day for my wife! and the carry handle snapped clean off! All i could do was watch it go crashing down our wooden stairs into many bits! The motor is still good thou and would like to go out in a blaze of glory! Regards Mike in UK
May I ask how do you burn out a vacuum cleaner motor with just 120Vac? Normally people use variacs to vary the input voltage to the primary of a ballasted MOT or something, so essentially they have a variable transformer from 0-2Kv. Did you wire the motor incorrectly or does your variac have some built in step up transformer ( which i dont think so) Thanks, great video btw
@ElectronSpark The next time you will overvoltage motors, please put relatively heavy balanced disc on the shaft. Listen to a noise of slow acceleration. One more suggestion for fun: If the motor is universal (magnets are electric on the stator), modify the motor to be ran by separate power supply for magnet and armature, you can run it by DC somehow using rectifier. Once at full rpm, reverse the polarity of magnets, and listen it stopping with the heavy load. Very nice sound will be produced.
The smell must have been wonderful.
1:05 - 1:11 sounds like a passenger jet taking off..
Photonicinduction... 2. :) Only difference
would be the sound of 60 hertz.
What you can't see in the video is that I am nearly 8 feet away from the action. Nor can you see the large multipurpose fire extinguisher I have sitting within arms reach, or the open garage door that serves as both ventilation and instant fire exit. :)
that was f*****g awesome at 5:16
that would clean a house good
I made a concrete impeller for my next motor. It is attached to a reversible AC motor that I made. As soon as I have the time to film it and edit it I will upload it. :)
how come you didn't call this shock-video style "2 Motors, 1 Variac"
4:27 PRETTY FIREWORKS!
@xlaptopx I love the smell! It's been a little while since my last video and my garage is starting to smell like a garage again. I think it's time for a little more electronic incense. :)
: Hah in Norway we have 240 Volts as standard household output
Nicely Done!! " electronic incense" Sweet :)
No information. At what voltage it was running to a point of burn out?
Do you need it? How are you gonna use it?
What is the deal with all these guys on youtube blowing up good parts? I can understand a kid doing this; but an adult just wasting stuff in such a derpy fashion is beyond me.
awesome dude
You kinda sound like Nicholas Cage
one nie mają żadnego chłodzenia
1:06 sorry a plane is taking off
is very awesome!!
What is the point ...No really, what is the point?
If you have to ask that question, then this channel isn't for you.
Too many ads
It reminds me of a jet turbine :)
jet plane
*seizure*
come to know Jesus
CRISPY MOTOR
It certainly isn't. I thought it was going to be educational. Shame.
talking ginger. is joke