Gosh this was almost 2 years ago. Don't even remember why I was asking.
John
> -Original Message-
> From: Chris Albertson [mailto:albertson.ch...@gmail.com]
> Sent: February 23, 2024 10:30 AM
> To: Enhanced Machine Controller (EMC)
> Subject: Re: [Emc-users] A
otor
> being run by one of Jon's pwm-servos. Both solutions would need far less
> electrical power to get the job done than a steeper could do.
>>> -Original Message-
>>> From: gene heskett [mailto:ghesk...@shentel.net]
>>> Sent: June-16-22 6:34 PM
>
ists.sourceforge.net
Subject: Re: [Emc-users] Acceleration question.
On 6/16/22 20:54, John Dammeyer wrote:
OK. I realize this will be a dumb question but please bear with me especially
since I've included the ability
to accelerate in my Electronic Lead Screw project.
A friend and I were discus
On Fri, 17 Jun 2022 at 18:02, Chris Albertson wrote:
1) Model the flywheel in CAD, and get the moment of inertia that way
(make sure you look at the right one, which will depend on the
orientation that you modelled it at)
2) Calculate how much energy is in the flywheel at target speed. E = 1/2 I
...@gmail.com]
> Sent: June-16-22 10:29 PM
> To: Enhanced Machine Controller (EMC)
> Subject: Re: [Emc-users] Acceleration question.
>
> OK, here is the problem.
>
> 1) we can not know the distance from the mass to the center of the wheel.
> Mass is always distributed, It al
> From: Chris Albertson [mailto:albertson.ch...@gmail.com]
> Sent: June-16-22 10:29 PM
> To: Enhanced Machine Controller (EMC)
> Subject: Re: [Emc-users] Acceleration question.
>
> OK, here is the problem.
>
> 1) we can not know the distance from the mass to the
> -Original Message-
> From: Chris Albertson [mailto:albertson.ch...@gmail.com]
> Sent: June-16-22 10:29 PM
> To: Enhanced Machine Controller (EMC)
> Subject: Re: [Emc-users] Acceleration question.
>
> OK, here is the problem.
>
> 1) we can not know the distance fro
onds. What size motor then?
>
>
>
> > -Original Message-
> > From: Chris Albertson [mailto:albertson.ch...@gmail.com]
> > Sent: June-16-22 6:56 PM
> > To: Enhanced Machine Controller (EMC)
> > Subject: Re: [Emc-users] Acceleration question.
> >
> > Knowing
On 6/16/22 21:57, John Dammeyer wrote:
Hi Gene,
Quite right. That link I posted used a table while in fact, as you pointed out, the mass
is mostly on the outside of a flywheel with spokes. I would imagine at there is some
average where if it's a 300 lb disk that is 24" might be the same as a
l Message-
> From: Chris Albertson [mailto:albertson.ch...@gmail.com]
> Sent: June-16-22 6:56 PM
> To: Enhanced Machine Controller (EMC)
> Subject: Re: [Emc-users] Acceleration question.
>
> Knowing the mass of the wheel is not enough, you need to know how far the
> mas
ze 23 300 oz-in.
>
> Could that actually bring a flywheel up to that speed in 5 seconds?
>
> > -Original Message-
> > From: gene heskett [mailto:ghesk...@shentel.net]
> > Sent: June-16-22 6:34 PM
> > To: emc-users@lists.sourceforge.net
> > Subject: Re: [Emc-users] Acce
Knowing the mass of the wheel is not enough, you need to know how far the
mas is from the center of rotation. They call this "Moment of inertia"
There are ways of calculating this for simple wheel shapes like a plain
disk but for anything else you are best off if you just measure it.
The simples
t; From: gene heskett [mailto:ghesk...@shentel.net]
> Sent: June-16-22 6:34 PM
> To: emc-users@lists.sourceforge.net
> Subject: Re: [Emc-users] Acceleration question.
>
> On 6/16/22 20:54, John Dammeyer wrote:
> > OK. I realize this will be a dumb question but please bear with
On 6/16/22 21:09, John Dammeyer wrote:
Addendum to this:
https://www.orientalmotor.com/motor-sizing/rotaryDevice-sizing.html#QuickReport
I chose a 24" disk, 5 seconds to get up to 50 RPM.
That's going to work for a flat plate, but will give you
a low answer with disappointing results for the c
On 6/16/22 20:54, John Dammeyer wrote:
OK. I realize this will be a dumb question but please bear with me especially
since I've included the ability to accelerate in my Electronic Lead Screw
project.
A friend and I were discussing bringing a 300 pound flywheel up to speed.
Vz=0 RPM, Vf=50
Addendum to this:
https://www.orientalmotor.com/motor-sizing/rotaryDevice-sizing.html#QuickReport
I chose a 24" disk, 5 seconds to get up to 50 RPM.
> -Original Message-
> From: John Dammeyer [mailto:jo...@autoartisans.com]
> Sent: June-16-22 5:50 PM
> To: Enhanced Machine Controller (EMC
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