A flywheel as a weighty wheel requires enough forces to rotate on its axis. It resists changes in rotational speed by their moment of inertia. Changing the stored energy on the flywheel, its rotational speed must be increased or decreased. That is, it keeps spinning until lots of force is applied.

At Rolan Australia, we want you to be completely satisfied with your purchase. If for any reason you're not happy with your item, we accept all returns within 30 days of purchase. Please note that we reserve the right to refuse returns if notified later than 30 days from purchase.

To initiate a return, please raise a request through eBay by either sending us a written request via MyMessages or by following the eBay returns process.

When returning an item, please make sure it's in the same condition you received it in and that it's packed properly and protected during delivery. If the item is returned used or damaged, we reserve the right to offer a partial refund.

To ensure that your return is processed quickly, please include a note with the original invoice, your full name, contact number, delivery address, and a brief description of the return reason.

We will process all returns within 3 business days of receiving them, and funds will be processed back to the original payment instrument. If you have any questions or concerns about your return, please don't hesitate to contact us.

If an item is non-returnable, it will be clearly stated in the eBay return policy section for that item. Please note that such items will only be accepted for return if they are found to be faulty or defective.