This piezo based apparatus is restricted to double ended rotors such as this lawn mover blade where the unbalance is @ 0 or 180 deg. The more capable accelerometer based "soft bearing" balancer can be seen in GADGETS#58
Thank you for taking time, which is more precise and with a greater range. They have told me that these old ones are more adaptable because their gain is greater and when working they are more versatile but take much longer but it is much better. I understand that it is something similar to what I comment that to achieve better results in the 4-blade. I was reviewing and there is another video I am going to detail and another where a team does. Thank you for commenting and contributing your experience and knowledge.
+Martinloren R&D - I think an accelerometer paired with optical sync holds a lot of promise for a more refined balancer. Waiting on my Chinese friends to deliver parts on order😀
In following your channel, it seems u have built a lovely place in the states. Exceedingly nice! I don't know if your move has anything to do political instability, none of my business, but glad to c u on this channel. I discovered this fine gentleman in a chat about the bs 500 transducer and immediately said this guy knows his oats. I subscribed and have watched all his vids, leading to confirmation of my hunch. Looking forward to my continuing education courtesy Mr. Canuck and Mr.Loren
not on motor...too high RPM for IR sensors featured on DIY methods on the channel so far even too fast fast with the laser I'm using off camera here impeller would have to be mounted on a mandrel and balanced at a lower speed and then reinstalled on motor...since it's a "rigid rotor", the lower speed balance would be still be good at the higher speed
I was thinking that you needed some reference point as to when the drill is removed, so that you only read/use the scope readings thereafter. I am also wondering about oscillations conveyed from the drill... Let's say it is out of balance... That wobble effects the blade mass, I would think... And, therefore, some amount of deflection occurs in the blade rotation... Which makes the blade appear to be out of balance, when, in actuality, the issue is with the drill... And, the long length of the rod/axle would exacerbate the problem... Just thinking...
the measurements used are those taken after the drill is disengaged and blade is spinning freely... I end this video stating that I would switch to an accelerometer rather than piezo. I did this in #58, #59 and #60
Buenas gracias por los videos son interesantes me detuve en este en especial por que estoy intentando reparar una balanceadora pero no tiene los sensores algo de electricidad parece que la intentaron reparar pero perdieron los sensores me dicen que eran unas bobinas la maquina es antigua el indicador el de aguja analógico un galvanómetro se puede hacer o adaptar algún otro tipo y como se puede calibrar tomando una medida con un eje agregar peso conocido y ver el aumento de escala y calcular. Creo que esta maquina para la referencia era una escala con una luz la escala la tiene graduada el 0 a 12 creo puedo sacar mas datos en el futuro. Quisiera saber su opiniones y consideraciones
not this method, Tom But the methods used in #58, #59 and #60 could be made to balance tires. You'd have to be comfortable with single plane (I am) with correction done center rim with adhesive weights (like many OEM tires and rims are done) I'm thinking of demonstrating it but it won't be for a while if I do
@@theGADGETSplaylist A demo from an expert would be very Awesome! - I'm looking for some method at home that will be better than a static balance - seems this area of knowledge is lacking among folks! Thank you for your videos :-)
I noticed that the BTI calculator had a Balance Grade for car wheels. I'm wondering whether you can adapt this method to dynamically balance a wheel besides a static balance.
+xr500t - not with this piezo based method. I explain why at the beginning of GADGETS#58 which uses an accelerometer based soft bearing method. Check out #59 for another example. If the pendulum and frame were scaled up, this process could balance a wheel.
What is the piezo reacting to? Linear movement? Also, if the unit is balanced, what r the peaks and valleys? It seems that a state of balance would b a straight line. U r one impressive person!!
+Bill Rimmer - The piezo is responding to EVERYTHING...part of the problem. It's picking up all noise and vibrations. The trick is to focus ONLY on the moment a heavy end of the blade applies pressure on the movable portion of the hinge, transmitted to the piezo inside the stethoscope. The rest is noise and must be ignored. I expect the accelerometer based balancer will be much more refined in many respects and will be capable of balancing more complex rotors.
yes, we're lucky to live in this age of affordable electronics this was experiment with piezo for balancing purposes...turned out to be very limited...you'll notice my use of accelerometers going forward thanks for the comment:)
@@theGADGETSplaylist thanks but really how they make it, i mean looks you know very deep on the balancing matter, if you dont know..... there is nothing or very little information on intetnet
@@fahb68 it is a trade in itself and I agree, you'd think more information would be shared on the internet... perhaps due to appealing to a small target audience...
I am also interested in spin-balancing of lawnmower blades. Is it possible to contact you somehow to discuss different approaches to spin-balance blades ?
The approach here in #54 was a test of a piezo approach, Michael. I demonstrated it can be done this way but advise to use the #58 & #59 method instead. The best place to reach me to discuss technical issues such as this is through TELEGRAM. Install the app, search HScope group and I will greet you there:)
@@ScireMi we're there, Michael and I'm pleased you're trying to find us:) Try this link: t.me/hscope Don't hesitate to ask if you're still having difficulty. Denis
its clear that you have a great deal of experience in balancing, you shared a lot of information and I sincerely thank you for that. However, given the precision required, it seems (to me) this rig is grossly insufficient. Wood base? a "bearing" formed by threaded rod through an 1/8" bracket? Copper fitting shim? washer (not concentric) acting on that hinge? and shouldn't that blade be spinning at a constant RPM, ideally the speed it spins at in use? With all this room for error, its hard to imagine how any meaningful information can be gathered. I am not familiar with your channel, but it seems like you don't have a lathe in your shop, building a balancing rig without a lathe seems like a bad idea. I don't say all this to be an ass, but rather to look critically at your method with hopes of improving it for myself and others. ps- what effect does spinning the blade vertically (vs its normal, horizontal use) have on balancing?
+Matt Traven - there are 3 more videos dealing with balancing (#58,#59,#60) where some of your questions are addressed including a discussion about this being an apparatus and not considered a balancing machine. And as to the limitations of this piezo approach. I wouldn't worry about the washer, concentric enough. And what's the copper spacer have to do with anything? All your other fears about constant RPM etc, unfounded. Match what I've done in these 4 balancing videos first and then by all means set out to improve on them.
This piezo based apparatus is restricted to double ended rotors such as this lawn mover blade where the unbalance is @ 0 or 180 deg. The more capable accelerometer based "soft bearing" balancer can be seen in GADGETS#58
Thank you for taking time, which is more precise and with a greater range. They have told me that these old ones are more adaptable because their gain is greater and when working they are more versatile but take much longer but it is much better. I understand that it is something similar to what I comment that to achieve better results in the 4-blade. I was reviewing and there is another video I am going to detail and another where a team does. Thank you for commenting and contributing your experience and knowledge.
"They're people who go to the mall in their pagamas, doesn't make it right" Now that was funny, I laughed out loud and I'm still laughing. :)
laughter is the best medicine:)
I'll try to make time to check out your channel, Mark...
so enjoyed with your work
just amazing
your thinking Inspires me
+black mind - nice of you to say...
There's more ideas and more fun to come!
I always learn from you channel, thanks for sharing!
+Greg Mackenzie - Thank You, Greg
Amazing video, very interesting application and easy understanding. Keep looking forward for the tests with the accellerometer solution!
+Martinloren R&D - I think an accelerometer paired with optical sync holds a lot of promise for a more refined balancer. Waiting on my Chinese friends to deliver parts on order😀
In following your channel, it seems u have built a lovely place in the states. Exceedingly nice! I don't know if your move has anything to do political instability, none of my business, but glad to c u on this channel. I discovered this fine gentleman in a chat about the bs 500 transducer and immediately said this guy knows his oats. I subscribed and have watched all his vids, leading to confirmation of my hunch. Looking forward to my continuing education courtesy Mr. Canuck and Mr.Loren
@@billrimmer5596 - Still in Canada, Bill
I don't fit with the leftist ideology here, and I fear for the future of our country, but it's home.
Thank you for sharing some of your experience with us.
all in good fun:)
here, the piezo method proved very restricted (but it did work)
subsequent videos use accelerometers
Hi, any way to balance a vacuum cleaner impeller to the motor?
not on motor...too high RPM for IR sensors featured on DIY methods on the channel so far
even too fast fast with the laser I'm using off camera here
impeller would have to be mounted on a mandrel and balanced at a lower speed and then reinstalled on motor...since it's a "rigid rotor", the lower speed balance would be still be good at the higher speed
Thank you professor!
I was thinking that you needed some reference point as to when the drill is removed, so that you only read/use the scope readings thereafter.
I am also wondering about oscillations conveyed from the drill... Let's say it is out of balance... That wobble effects the blade mass, I would think... And, therefore, some amount of deflection occurs in the blade rotation... Which makes the blade appear to be out of balance, when, in actuality, the issue is with the drill... And, the long length of the rod/axle would exacerbate the problem... Just thinking...
the measurements used are those taken after the drill is disengaged and blade is spinning freely...
I end this video stating that I would switch to an accelerometer rather than piezo. I did this in #58, #59 and #60
Thank you!
Buenas gracias por los videos son interesantes me detuve en este en especial por que estoy intentando reparar una balanceadora pero no tiene los sensores algo de electricidad parece que la intentaron reparar pero perdieron los sensores me dicen que eran unas bobinas la maquina es antigua el indicador el de aguja analógico un galvanómetro se puede hacer o adaptar algún otro tipo y como se puede calibrar tomando una medida con un eje agregar peso conocido y ver el aumento de escala y calcular. Creo que esta maquina para la referencia era una escala con una luz la escala la tiene graduada el 0 a 12 creo puedo sacar mas datos en el futuro. Quisiera saber su opiniones y consideraciones
Las máquinas más antiguas usaban transductores de velocidad.
eran una bobina que se movía dentro de un imán permanente
y eran y siguen siendo caros
very interesting thank you for sharing much appreciate it.
A Marghani - glad you liked it:)
could this or a similar method be applied to a wheel and tire assembly on a vehicle (on-vehicle balancing)? Thanks for the video / inspriation! :-)
not this method, Tom
But the methods used in #58, #59 and #60 could be made to balance tires. You'd have to be comfortable with single plane (I am) with correction done center rim with adhesive weights (like many OEM tires and rims are done)
I'm thinking of demonstrating it but it won't be for a while if I do
@@theGADGETSplaylist A demo from an expert would be very Awesome! - I'm looking for some method at home that will be better than a static balance - seems this area of knowledge is lacking among folks! Thank you for your videos :-)
I noticed that the BTI calculator had a Balance Grade for car wheels. I'm wondering whether you can adapt this method to dynamically balance a wheel besides a static balance.
+xr500t - not with this piezo based method.
I explain why at the beginning of GADGETS#58 which uses an accelerometer based soft bearing method. Check out #59 for another example. If the pendulum and frame were scaled up, this process could balance a wheel.
@@theGADGETSplaylist Thank you, heading right over to watch!
What is the piezo reacting to? Linear movement? Also, if the unit is balanced, what r the peaks and valleys? It seems that a state of balance would b a straight line. U r one impressive person!!
+Bill Rimmer - The piezo is responding to EVERYTHING...part of the problem. It's picking up all noise and vibrations.
The trick is to focus ONLY on the moment a heavy end of the blade applies pressure on the movable portion of the hinge, transmitted to the piezo inside the stethoscope.
The rest is noise and must be ignored.
I expect the accelerometer based balancer will be much more refined in many respects and will be capable of balancing more complex rotors.
What a great video, firts thanks for sharing all your know, ..... how they make before electronics ?????
yes, we're lucky to live in this age of affordable electronics
this was experiment with piezo for balancing purposes...turned out to be very limited...you'll notice my use of accelerometers going forward
thanks for the comment:)
@@theGADGETSplaylist thanks but really how they make it, i mean looks you know very deep on the balancing matter, if you dont know..... there is nothing or very little information on intetnet
@@fahb68 it is a trade in itself and I agree, you'd think more information would be shared on the internet...
perhaps due to appealing to a small target audience...
I am also interested in spin-balancing of lawnmower blades. Is it possible to contact you somehow to discuss different approaches to spin-balance blades ?
The approach here in #54 was a test of a piezo approach, Michael. I demonstrated it can be done this way but advise to use the #58 & #59 method instead.
The best place to reach me to discuss technical issues such as this is through TELEGRAM. Install the app, search HScope group and I will greet you there:)
@@theGADGETSplaylist OK, thanks.
@@theGADGETSplaylist loaded TELEGRAM on my PC and came up empty when searching for HScope group.
@@ScireMi we're there, Michael and I'm pleased you're trying to find us:)
Try this link:
t.me/hscope
Don't hesitate to ask if you're still having difficulty.
Denis
好厲害喔！❤
very nice.
Thanks Michael.
This method was more of an experiment. The accelerometer method in GADGETS#58 and #59 is a much better approach.
good work
+dan man - thanks, Dan!
This is not dynamic balancing. The sensor only measures one axis.
you know not of what you speak
its clear that you have a great deal of experience in balancing, you shared a lot of information and I sincerely thank you for that. However, given the precision required, it seems (to me) this rig is grossly insufficient. Wood base? a "bearing" formed by threaded rod through an 1/8" bracket? Copper fitting shim? washer (not concentric) acting on that hinge? and shouldn't that blade be spinning at a constant RPM, ideally the speed it spins at in use? With all this room for error, its hard to imagine how any meaningful information can be gathered. I am not familiar with your channel, but it seems like you don't have a lathe in your shop, building a balancing rig without a lathe seems like a bad idea. I don't say all this to be an ass, but rather to look critically at your method with hopes of improving it for myself and others.
ps- what effect does spinning the blade vertically (vs its normal, horizontal use) have on balancing?
+Matt Traven - there are 3 more videos dealing with balancing (#58,#59,#60) where some of your questions are addressed including a discussion about this being an apparatus and not considered a balancing machine. And as to the limitations of this piezo approach.
I wouldn't worry about the washer, concentric enough. And what's the copper spacer have to do with anything?
All your other fears about constant RPM etc, unfounded.
Match what I've done in these 4 balancing videos first and then by all means set out to improve on them.