- #1

- 2

- 0

The weight of the flywheel is= 6500 kg

( wt. shaft, flywheel boss and wall 2700 kg + mass 3800 kg = total 6500 kg )

RPM= 1550

Diameter=2200mm

Thanks for your help.

You are using an out of date browser. It may not display this or other websites correctly.

You should upgrade or use an alternative browser.

You should upgrade or use an alternative browser.

- Thread starter Tjtech
- Start date

- #1

- 2

- 0

The weight of the flywheel is= 6500 kg

( wt. shaft, flywheel boss and wall 2700 kg + mass 3800 kg = total 6500 kg )

RPM= 1550

Diameter=2200mm

Thanks for your help.

- #2

russ_watters

Mentor

- 20,427

- 7,030

The amount of torque required depends on its moment of inertia and how fast you want it to spin up.

- #3

- 2,071

- 3,080

Last edited by a moderator:

- #4

- 285

- 79

- #5

- 2

- 0

Thanks russ_watters, isn't how fast I want the fly wheel to spin the RPM? And if you don't mind how am I supposed to calculate the moment of inertia? Sorry for the trouble as am still an amateur at this thanksThe amount of torque required depends on its moment of inertia and how fast you want it to spin up.

- #6

- 224

- 153

By RPM we usually mean the speed of rotation after the flywheel is up to speed. russ_watters and the other posters are talking about acceleration. How long do you want it to take to go from 0 RPM to max RPM? The shorter the time, the more torque you'll need.Thanks russ_watters, isn't how fast I want the fly wheel to spin the RPM? And if you don't mind how am I supposed to calculate the moment of inertia? Sorry for the trouble as am still an amateur at this thanks

You can find the moment of inertia on this table: http://en.wikipedia.org/wiki/List_of_moments_of_inertia

Note that multiple values are listed for each shape. The subscript tells you which axis you are rotating about.

- #7

- 2,071

- 3,080

Thanks russ_watters, isn't how fast I want the fly wheel to spin the RPM?

No, it's the angular accelration

And if you don't mind how am I supposed to calculate the moment of inertia? Sorry for the trouble as am still an amateur at this thanks

This the

If it is a solid disc:

If it is a ring:

For other basic shapes: http://en.wikipedia.org/wiki/List_of_moments_of_inertia

Calculation method for more complex shapes: http://en.wikipedia.org/wiki/Moment_of_inertia#Calculating_moment_of_inertia_about_an_axis

Share: