5 ms·
I'm astonished every time I hear a truck or a bus huffing and puffing dramatically as it accelerates from 0 to maybe 10
by FredPret 5y ago
I'm astonished every time I hear a truck or a bus huffing and puffing dramatically as it accelerates from 0 to maybe 10
- numpad0 5y agoWhich is insignificant in the context. The noises that video author discusses comes almost purely from tires rolling, at speeds where ICEs are basically silent compared to it.
- throw0101a 5y agoAt 7m30s the video states that rolling noise (tires) starts being same/louder than propulsion noise at 30 kph. Reducing speeds from 50 kph to 30 kph reduces noise by 6 dB (a change of 3 dB is halving/doubling). So yes, it's not surprising that 0-10/15 kph you hear the engine more.