Electric Vehicles in Thailand

[Gweiloman]

On 1/19/2025 at 11:39 AM, josephbloggs said:

So many EVs in my soi now, including a lovely MG Cyberster. Anyway, my opposite neighbour has a Haval Jolion. It makes so much noise, even when parked (I've never heard the ICE running, he only uses it in EV mode) it makes this whining noise. It is so loud I can hear it from inside my house.

Just wondering if this is normal or if there is something wrong with his? I've never heard any PHEV or EV make this loud whining before. Just curious. @Gweiloman has a Haval if I remember correctly. Does yours make this noise in EV mode?

Sorry for late reply. I went to start up the Haval and no sound. It does make a whining sound when I start driving but only at low speeds.

[Pib]

2 hours ago, Gweiloman said:

Sorry for late reply. I went to start up the Haval and no sound. It does make a whining sound when I start driving but only at low speeds.

Even no whining when the inside of the cabin is hot?  Like it has been setting in the sun making the cabin fell like inside a oven.....or it's just simply hot weather even in the shade (not to be confused with the cool weather we have right now).    

 

And what temp do you keep you A/C set to?   If like something around 26C (which some of my Thai in-laws prefer) then an electric A/C compressor will rarely have to work hard..."spin fast" which can cause a whining noise since scroll type compressors (vs a piston type compressor) can have a whine when working hard/spinning fast.    But set the A/C to something like 22C or lower the electric compressor will have to do more work/spin faster "if" the cabin temp is hot.

[Pib]

On 1/19/2025 at 3:10 PM, josephbloggs said:

Thanks to you and @Andrew Dwyer - curiosity sated. Seems like that is what it must be as it does go up and down in pitch. It is so loud though, even when it is in his driveway I can hear it in my house with windows and doors closed and A/C running.

Sometimes the loudest and pitch of a sound greatly depends on your location in relation to the source of the sound.   You can be in one spot and a sound is loud/high or low pitch and move just few meters and the sound may very significantly change.   

 

Heck, just last week when my neighbor directly across from me was doing his annual cleaning of his driveway with his high pressure washer that sound from the high pitch sounding washer would come across the soi "between" my house and my adjacent neighbor's house and then bounced off the fence wall behind my house making it sound like my home water pump close to my back wall was constantly running when in fact the water pump was not running.

 

It was really strange how that high pressure washer's sound was being amplified a little as it was focused between my house and my adjacent neighbor's house and then being bounced on my back fence wall....made the sound louder and also a higher pitch than if I was standing in the soi  much closer to the actual source of the sound--the pressure washer. 

 

A similar thing happens occasionally when some one a couple hundred meters away plays a music source loudly with a LOT of low frequency bass which most Thai just love...that is a lot of low frequency bass that can rattle your bones.  When that occurs just me moving a 5 or so meters to the left or right can make a big difference in how loud the sound is..  I expect it's because of where the echoes of the sound reinforce or suppress each other depend on where the echoes happen to meet as those echoes bounce away.