Quote:
Originally Posted by aerohead
You need to be acquainted with the concept of polar moment of inertia.In order to determine if lighter wheels will pay you back in savings,you need to know how the mass of the lighter wheel is distributed dynamically,compared to the existing wheel/tire combination.
There may be a You-Tube video out there somewhere,which will show you how to analyze this.Without the procedure,you'll never know beforehand if the wheels are a good investment.They're not all created equal,and some alloy wheels offer no weight reduction at all.  |
A wheels weight distribution is a good point; one that is rarely mentioned. It will determine the torque required to achieve a particular rotational acceleration. However it is calculated using the Moment of Inertia - no need to go polar for this
Weight closer to the axis of rotation will have less impact on rotational momentum than the same weight further out.