Balancing a rotor with an oscilloscope

This rotor balancing machine is easy to make and not expensive. It is very accurate and you can cusomize to any rotor you need. It cost only 12 usd in parts if you already have the osciloscope and the spin motor.
I`m using two accelerometer and a reflection sensor. They are very cheap can be found on ebay.
Based on the amplitude and the timing between the refference point I can determine how many degree I need to add extra weight to balance it.

[olegiakovlev]

Thanks a lot for sharing this. I used same principal to balance fans on 2.5 MW generators (Leroy Somer), and tried to find this principle explanation, your video is great source!

[lj]

Amazing little project that is simple yet incredibly effective!

[alessandroandrenacci]

Thank you very much for your video, also your english is for me very clear ( i'm not English or from States, i'm from Italy ... )
I do appreciate the start line ( and it's trigger to the oscilloscope ) which is to be considered the zero angle of a 360 degrees revolution ... and the following position of the eccentric weight ...

[DS_]

i wish you would return to making content. your work is fun to watch and i like that you explain things very well!

[Electric-Motor]

Great video, I think it's great that you show here that you can also achieve a lot with simple tools.

[gadgetwob]

Very neat, nice job! I think that scope supports averaging which would take all that high frequency noise out.

[FrankReif]

I'd be interested to know about how other mounting design for this setup would compare. My understanding is that suspended carriages allow for more sensitive plane motions to be detected. However, the suspended systems seem unnecessarily complicated - instead you could stiffen the stands and allow the bearing mounting brackets to slide laterally on top of them within a limited range of motion and move the accelerometers onto the moving plane.

[ovalwingnut]

Fantastic job! Really well explained "and" I WANT ONE !!!! Thanks so much for your efforts. Cheers from SoCA.USA

[ryanrobinson]

Great info. I love this kind of project!

[DiyEcoProjects]

*Dear iulian207* Custom rotor balancing machine. hmm... interesting. Thats clever, well done

[capcloud]

this is great setup but the motor cannot engage with the rotor in the center as that influences the forces, which prevents you from balancing correctly. you want to rotate through the axel (shaft)

[davemac]

Nice setup. Can you provide a few more details on it?
1. What accelerometer off ebay did you use? I see alot of the GY-61 ADXL335 analog output ones that have a theoretical max BW of 1600Hz, but that is with the smallest filter capacitor on the output, and I doubt a lot of those boards come like that? I think my particular motor maxes out below 1K RPM, so what sensor BW would I need for that? How do you figure that out exactly?
2. What IR sensor board did you use?
3. Is there anything special with your motor mount design to provide for vibration sensitivity and how the accelerometers are mounted? Are you attempting to float the axle mounts somewhat or something else?
thanks!

[johnglsmith]

This is great information. Thanks for sharing.

[yachelcrofts]

Thank you, I am enjoyinhg your research. What material did you use for your rotor laminations, it looks like aluminium, is this correct?

[efanutz]

Please, can ypu help us with some links for those tinny devices, accelometer for arduino and the other from the axel? Thanks you in advance

[ahmadkamseda]

If possible explain more about acceleration sensors you have used

[LeRaphael]

that is very Smart ! i searching solution cheap to balancing a Hub wheel i will reuse that idea, thx

[DavidBuzz]

Nice work... can u tell us what the specs of the accelerometers are? Eg, how many G's are they rated to? 1g? 16g?

[victoryfirst]

Can you tell me how accurately you can balance the motor to within how many grams Sir ? Would be nice you make a video on the setup you have here for us all to learn on YouTube Sir. Have a great day too.

[Och_]

interesting. but securing washers with tape is not safe and dangerous.