Proposal: Updated Vehicles

[nuke11]

Originally Posted by StainlessSteelCynic

For example, there's been mention on a few websites that the diesel electric configuration is very quiet and it's probably safe to assume that Project vehicles would have the same level of stealth (or better) but that is something that is rarely mentioned (if ever) in any Project material that I've read.

I've been working on a spreadsheet of "sound levels" dB for different events, areas, equipment, weapons and vehicles for the TMP.

Now from my research a eMotorcycle is 60 dB, eSnowmobile is 62 dB, average gasoline car is 70 dB, HMMWV is 77 dB. So I was thinking an MPV would be around 58 to 62 (still not completely set on that value yet).

[Desert Mariner]

[QUOTE=nuke11;81030So I was thinking an MPV would be around 58 to 62 (still not completely set on that value yet).[/QUOTE]

From what I've read recently, the EV is virtually silent below 10km/h and ICE is about 10db louder. Above that, the sound levels converge rapidly as the majority of the sound is aerodynamic (wind) and tire noise rather than from the engine/transmission.

[nuke11]

Originally Posted by Desert Mariner

From what I've read recently, the EV is virtually silent below 10km/h and ICE is about 10db louder. Above that, the sound levels converge rapidly as the majority of the sound is aerodynamic (wind) and tire noise rather than from the engine/transmission.

They are very quite and I've been watching videos of electric vehicles, bikes and a couple of snowmobiles and they are quite. But we really can't have a silent vehicle. So there has to be a trade off somewhere.

Here are some common sounds and that is why I have placed it around 60 dB, but it could lay closer to 50 dB as it is moving.

Rustling Leaves 20 dB
Whisper 30 dB
Wind @ 10 km/h 30 dB
Refrigerator Electric Motor Hum 40 dB
Light Traffic 50 dB
Normal Conversion 60 dB
Wind @ 20 km/h 62 dB

A really interesting article of now much noise an electric vehicle makes : http://www.vejdirektoratet.dk/DA/vid...c-vehicles.pdf