2 ms·
I just know the math indirectly, from observing that stopping distances scale linearly with rolling component mass but by the square root of the total mass of t
by jaggederest 9y ago
I just know the math indirectly, from observing that stopping distances scale linearly with rolling component mass but by the square root of the total mass of the vehicle. Relevant to modifying vehicles - if you put larger, heavier rims on your car, you must also upgrade the braking system or you're rendering it unsafe to drive by possibly doubling the stopping distances.
- taneq 9y agoThe number I've read is saving 1kg of rotating mass is equal to saving 4kg of chassis weight. I can't believe rotating components make up 1/5th of a car's mass though.
- TheSpiceIsLife 9y agoThat's got to be averaged out over all rotation mass in the vehicle though right? The shaft to a CV joint is going to have a helluva lot less angular momentum than a wheel.
- taneq 9y agoIt was a rule of thumb from a drag racing website so it's probably highly biased towards wheels. I think they did mention lightening the flywheel on the engine too, though - although that's best thought of as energy storage, rather than energy loss, since you reclaim the energy in the flywheel at the next gear change.