New consulting relationship with GreenTecAuto begins
What actually goes wrong with the batteries????
A look at todays Hybrid and EV battery packs
Battery packs exposed
Keeping Warm In New England
Plugging into the SUN
Making a small solar concentrator
Building MIMA and the plug in adapters
Converting a telephone truck to electric
DIY dual pulse Capacitor Discharge Spotwelder
Chevy Bolt EV joins the family
Battery conditioning
Better look at the drive unit
Bottom cover
Drive unit
EV meetup
First test
free solar charging
Getting deeper into winter
Goodby to the batmobile
How it lookes
Huge amount of things need to be disconnected
Hypermiling the Bolt EV
Installing a trailer hitch on my Bolt
Keeping the batteries warm in winter
Last look at my car collection
Making the trailer lights work
Very different than a gas car
One complaint/ future modification?
Transmission leak?
Getting in shape while making electricity
Replacing gasoline with solar electric lawn equipment
What is Genesis One?
How to stop the aging process DIY
MIMA Install Day 2005 a Big Success!
Building a hybrid car grid charger
Tapping into the Wind
Expanding MIMA with the Distribution board ( users projects )

One complaint/ future modification?

click to expand
Bolt EV Pedestrian warning noise maker
The quietness of driving an EV can be a pleasant experience, but when you are used to hearing the motor noises and suddenly hear only tire noise, for me at least, I find myself unable to judge my speed and tend to go faster than I think I m going. After a few hundred miles I got used to it.
The Bolt has a small noise maker under the drivers side front wheel well.
It makes a strange pink noise that is designed to warn pedestrians that you are there and in drive.
It goes away after the car has reached ~15 mph.
It seems to me that we should at least have a choice as to what the sound is.
Maybe one would like a Harley motorcycle sound, or a bird singing, maybe a star trek like phaser. so one could have some fun selecting the sound like the ring tone on your cell phone?

Being a tinkerer by nature I got under the Bolt and located the sound maker.
I disconnected the plug from the sound maker and the sound stopped, but the dash display indicated that the pedestrian warning system needed service.
Plugged it back in and things went back to the normal pink noise.

Will have to get back under there with a scope and meter to see if the sound is produced in the sound output device, or if it is produced elsewhere and is fed to the sound maker which is simply acting as a speaker?
Next time on the lift will dig deeper.