EV (electric vehicle) News and Discussion

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#2257947 14-Jun-2019 09:49

ajbw: I'm a bit puzzled about your units conversion here.
Isn't 24.4 km/litre 68.9mpg?

Honestly, mentally I usually use miles per gallon for comparing fuel efficiency.

I was using Google for the conversion

https://www.google.com/search?q=how+many+kpl+is+68.9+mpg

ajbw

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#2258014 14-Jun-2019 10:22

Now I've got it. That gives US (=UK) miles per US gallon, which is a lot smaller.

Since we have never been colonised by the US (despite attempts to the contrary),
I guess most people here - such as those who used to buy petrol in gallons - would be more used to the
Imperial (what a great word) gallon.
This presumably also applies to beer drinkers, assuming pints are still a thing.

SaltyNZ

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#2258017 14-Jun-2019 10:24

ajbw:
This presumably also applies to beer drinkers, assuming pints are still a thing.

What's the conversion ratio between miles per gallon of beer and blood alcohol concentration?

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kingdragonfly

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#2258788 15-Jun-2019 16:40

This Electric Motorcycle Will Kill You

Scotty Kilmer

This Electric Motorcycle Will Kill You, DIY and car repair with auto mechanic Scotty Kilmer. Dangerous motorcycles. Why new electric motorcycles have interesting technology but can also be dangerous. Electric Zero motorcycle review. Zero vs Harley Davidson, who makes the best electric motorcycle? Motorcycle advice. DIY car repair with Scotty Kilmer, an auto mechanic for the last 51 years.

frankv

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#2258849 15-Jun-2019 19:06

kingdragonfly: This Electric Motorcycle Will Kill You

Scotty Kilmer

Hmmm... all of a sudden I've lost interest in any Scotty Kilmer videos.

Totally misleading title... i.e. clickbait. The only thing in the video that the title could conceivably relate to is that an electric motorbike is quiet, so motorists might crash into you. No, really, that's a fact according to Scotty Kilmer.

👎

kingdragonfly

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#2258858 15-Jun-2019 20:19

I thought he meant it was so fast it could kill you, but you're probably right.

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#2258912 15-Jun-2019 21:36

I'm not defending Scotty Kilmer, but the lack of engine noise is something to watch out for.

https://www.theverge.com/2018/2/25/17047918/zero-ds-zf6-5-electric-motorcylce-ride

Riding through the rain on the ‘Model 3’ of motorcycles

Zero’s electric motorcycles are a taste of what’s to come
...
No one was puzzled as to why these bikes were quietly idling next to their cars instead of rumbling through their skulls. Most were happy to know what the name of the company was, or to steal some other small bit of information before the lights turned green. But one of them offered a word of warning: “Y’all be careful, it’s gonna be hard for folks to hear you coming.”

He’s right. The strangest thing about the DS ZF6.5 was how quiet it is. The videos I had watched before my ride of the bike being operated at higher speeds gave me the impression that it emitted a characteristic whine. But at or under 40 miles per hour, this motorcycle was essentially silent, save for some scuffy noises that come from the motor as it spins up to speed, and a low, rising tone that resembled the wind howling outside a house.

The silence is actually a wonderful thing if you want to be aware of the world around you. I was able to hear almost as much as I could if I was on a bicycle — car tires pawing at the greasy wet ground, conversations of people at a crosswalk, the sound of brakes being applied ahead of me. I could hear all these and more, even through my helmet.

Where it felt dangerous is that, without the thunder of a combustion engine, the world can’t hear you. More than once, a pedestrian stepped out into the street thinking they were clear to cross before, mercifully, they spotted me charging at them. Other times, I was cut in front of by drivers who probably would have heard me if I were on a combustion motorcycle. As pleasant as my ride was, the silence made me more uneasy than the sketchy weather conditions.

This could all change. The National Highway Traffic Safety Administration wrote a set of rules in 2016 that will soon force manufacturers to add an artificial noise to EVs when they’re operating at low speeds. In response, some carmakers have been thinking up some wild ideas about what those sounds should be.

But the NHTSA rule is just for four-wheeled electric cars and trucks. There’s not a mandate for motorcycles just yet, though I hope one comes. I’m not sure I know what I think an electric bike should sound like, but I’d be willing to give anything a shot. Giving other people on the road as much information as possible that a motorcycle is coming can only be a good thing.
...

kingdragonfly

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#2259029 16-Jun-2019 09:18

It's mandatory for all cars manufactured in the United States to have an On-board diagnostics, "OBD-II" port. Some motorcycles have variations of the port also.

Google this if you want to see what cool things you can do with it:
obd elm327 iphone OR android

If someone wanted to make the Zero motorcycle make an engine noise, perhaps this is a good place to start.

smart brake lights and more
https://hackaday.com/2013/09/15/smart-brake-lights-and-more-with-openxc/

Installing a Bluetooth OBD-II dongle on a Zero Motorcycle
https://crashcash.github.io/obd-II_dongle/index.html

This would give an RPM and braking readings. Since there's no transmission gear change, it would be easy to map an RPM changes to the noise.

I thought a Jetson space capsule was a cool noise.

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#2259073 16-Jun-2019 13:19

kingdragonfly:
I thought a Jetson space capsule was a cool noise.

But I thought it was one of the most annoying things I have ever heard

Dingbatt

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#2259074 16-Jun-2019 13:25

PolicyGuy:
kingdragonfly:
I thought a Jetson space capsule was a cool noise.

But I thought it was one of the most annoying things I have ever heard

I like the idea of the sound of a Star Wars Tie Fighter for EVs at low speed.

“We’ve arranged a society based on science and technology, in which nobody understands anything about science technology. Carl Sagan 1996

kingdragonfly

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#2259512 17-Jun-2019 15:18

I like the idea of the sound of a Star Wars Tie Fighter for EVs at low speed.

Not sure about the Star Wars engine noise Perhaps laser fire when you use your signals?

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#2259513 17-Jun-2019 15:19

kingdragonfly:
I like the idea of the sound of a Star Wars Tie Fighter for EVs at low speed.

Not sure about the Star Wars engine noise Perhaps laser fire when you use your signals?

In a Tesla you can actually turn on "Fart on turn signal" sound effects :D

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kingdragonfly

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#2261583 20-Jun-2019 18:00

Tesla Model X 75D MAX SPEED On Autobahn (battery overheat & will it autopilot?!)

Tesla Driver

Tesla Model X 75D MAX SPEED On Autobahn (battery overheat & will it autopilot?!)

kingdragonfly

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#2261588 20-Jun-2019 18:13

Tesla Autopilot | High Speed Test at Night on Curvy Road

ALL Electric

Linuxluver

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#2261617 20-Jun-2019 19:14

kingdragonfly: This Electric Motorcycle Will Kill You

Scotty Kilmer

The few Kilmer videos I've seen, he's left me unconvinced I should watch any more of them. From what I can recall, he's not an electric vehicle fan.....to say the least.

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