Everything posted by wyx087
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Mercedes gets it with EQXX: efficiency is key
Mercedes gets it. To get more range out of EV's, it's not about putting in bigger and bigger batteries. It's all about efficiency.
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The future of cars in the media (TV, Print and Forums)
Sounds just up my street, charge rates and miles per kWh are my favourite things. Currently, EV discussions are in a subsection of the forum. I think in the future, ICE rated stuff would be in a subsection of the forum. Don't need to fear, it wouldn't die just as owning and riding horses became a real hobby rather than a mode of transport.
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EV real world range and cost to charge
£200 servicing in 10 years is ridiculous, only way to achieve it is if he's got a mate at garage that changes pollen filter and brake fluid for him for £40 every 2 years. Otherwise he's not keeping to Nissan's service schedule.
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Home Charger Options
My parents are moving in to somewhere 20 miles from us. (much closer than 150 miles) I guess there's no grant options for them to install a charger without any EV purchases? I've already used my EV purchase ~4 years ago to install charger at my home.
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the truth about electric cars
Hum.... I thought the Y was as narrow as 3. Didn't know they are almost S width! I don't want anything that's larger than 1.9m, some roads with parked cars in London are really narrow. Sorry, I look at way too much Tesla's, I can pretty much identify their features by their exterior and model year. I'm looking to get a second hand 3 or Y in the future.
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the truth about electric cars
It's very much a case of combination of everything: - Weight - Motor technology - Inverter design - Heating system - Heat scavenging features - Balanced weight vs range etc Model 3 was on-par with Ioniq 28kWh being the most efficient in 2019/2020. Ioniq 40 kWh is heavier and not as efficient (also charges slower because of lower pack voltage, it was designed to be a 64kWh pack and then downgraded by decreasing number of modules) 2021 Model 3 now has special valve heatpump, allowing it to scavenge heat from rapid charge heated battery instead of using electricity for heating. So now Model 3 and Y are most efficient in its class. Another example, this time on motor: Old Zoe had Q and R motor variants, IIRC there were over 10% efficiency differences, so even though one charges twice the speed at 43 kW instead of 22 kW, it doesn't actually translate to twice driving range between charging. Sorry, I meant miles of range per charging hour, which is arguably more useful metric than pure kW. Latter is only useful to calculate cost of charging. If it averages out to be charging at 300 mph, and you have 150 miles to drive, it's easy to see how long you need to charge.
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the truth about electric cars
The Ioniq 28kWh is crazy efficient, it can beat 40 kWh cars in a long distance race due to its efficiency. This effectively making it charge faster in terms of miles per hour.
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Winter roads, ice, snow and wet or dry driving in an EV..
Every time I drive, before leaving the residential area. I get up to safe speed and put the car into N, then brake to a complete stop. Do this at least twice. In N, it doesn't use re-gen braking, only good ol' friction brakes.
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Winter roads, ice, snow and wet or dry driving in an EV..
Yeah, I've changed to adding concentrated directly into the washer res a few weeks ago. No engine heating in that area is problematic this time of the year.
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EV real world range and cost to charge
The video calculations are not quite right. A 9 years old Leaf cannot hold 24 kWh charge, I'd estimate my car to hold 18-19 kWh absolute maximum. Even new, it won't hold 24 kWh, that was the gross capacity. Another point, public EV charging is always cheaper at slower speed. Eg, outside a friend's central London flat, there was a Polar 50kW rapid and a Ubitricity lamp post charger. Only a foul would solely use the rapid charger to power their car. But main point of video stands, check electricity rate, solely use rapid charging can wipe out fuel savings. I'm on 13p for E7 off peak and 23p for other times with Bulb variable tariff. My smart meter was installed a few months ago and I've been offered their EV tariff of 4 hour 5.5p and 24p other times. I plan to sign up after Christmas when WFH guideline lifts. But now that Bulb is disappearing and I have my gen2 smart meter, I want to switch to Octupus.
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Zoe and Spring NCAP
Absolutely, it's due to chip shortages. But if anything they were to cut, it should always be non-safety related. I'd be okay if they installed 20 buttons in place of a touch screen, and offered a retrofit upgrade path to normal spec later down the line. Or even wind-down windows + hand adjusting mirrors to eliminate door control modules at each door. Luxury can always go backwards, but never safety.
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Zoe and Spring NCAP
https://www.motoringresearch.com/car-news/renault-zoe-zero-star-euro-ncap-score/ Corporate greed driven spin at its finest. The whole thing with Zoe's zero star also stinks of corporate greed. The goal post absolutely need to change to ensure new cars are all kept in-line with new technologies widely available. So not just luxury cars get the best safety features. In this case, a cheap car doesn't mean it should forgo well established safety tech: side curtain airbags or AEB.
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the truth about electric cars
Not sure what's going on with your consumption TBH. I find it hard to achieve 50mpg in my diesel in winter, around 55mpg in summer on my 29 miles commute, mostly motorway. Whereas I gun it in the EV whenever possible and total ownership average is 3.96 mi/kWh. Last month average is 3.41 mi/kWh. Last Monday morning was 0c, I gunned it up the motorway at questionable speed because no matter what I do, I'd still need a recharge at work. That 29 miles trip was 2.7 mi/kWh. But £740 is still half of £1400 to re-energise the vehicle. There's £4673 vehicle purchase price difference, so would take less than life-time of vehicle to break even (7.5 years). This is energy only, excluding other possible savings.
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the truth about electric cars
How does that work? My real world data with 13p per kWh electricity tells me it costs 3.2p per mile. It's still far from 10.4p per mile using 53.5 MPG car at ~£1.20 per litre diesel over previous 4 years (only refueled diesel twice since the petrol-panic-price-increase to £1.50 per litre). So even at double 26p per kWh electricity, what most off-street parking charges, it would still be cheaper per mile than an efficient diesel. It needs to be over 45p per kWh to be more expensive than a diesel. More for a non-hybrid petrol. Checking my spreadsheet and updated with Nov data from the car. I got 3.96 miles per kWh over total 31k miles we've driven in our Leaf. So average of 3.8 mi/kWh a slightly smaller car is totally believable. Of course, there's 20% of charging loss we need to add on for cost of electricity we actually pay. But still far less than 45p/kWh break-even point I derived above. That's on the fuel. As mentioned in the video, also servicing cost savings, road tax savings. For some, also ULEZ and congestion charge savings. My diesel Skoda at similar age to Leaf and costed me same to buy need to pay both ULEZ and C charge.
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the truth about electric cars
May be EVdatabase? https://ev-database.uk/car/1192/Vauxhall-Corsa-e 3.84 mi/kWh.
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the truth about electric cars
Being the tight git that I am, I'm not paying £35 for something totally useless. As if my Nissan Leaf can make it to France haha Topical video about cost of EV's: video
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the truth about electric cars
It's like when driving a car, you notice more of the same car on the road. I notice all the EV's on the road, including same model variants because I'm sad like that. I guess most people just see normal cars. Hopefully the green plates will help with public perception.
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Electric vehicles and charging
Same here. Rapid charging hubs like Milton Keynes coach station charger hub, the Braintree charging forecourt, new Rugby services are the only ones I'd plan to rely on when travelling with other people in the car. All others with just single or even 4 stalls, I'd have to plan to arrive with miles to spare for Plan B when looking at the route. I said 4 stalls because with ever increasing EV owners, anything less than 4 is liable to queuing. It's amazing in late 2021, public charging is still such a farce.
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the truth about electric cars
To be fair, he was driving it really conservatively to achieve 66 miles out of a battery that have lost 4 health bars. My 7 yo Leaf have lost 1 battery health bar, I place it at 50 miles of any-road any-southern-England-weather totally-reliable dependable range.
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Electric vehicles and charging
So legacy car manufacturers finally starting to understand EV batteries. From 2011/2012 Nissan Leaf have 80% charge limit setting. Tesla always have variable charge limit setting in all their cars. ~2015 Leaf removed charge limit setting, no newer Leaf have this setting anymore I think Kona have variable charge limit setting, that was ~2019. I don't believe any other earlier EV's (Zoe, B-class EV, Smarts EV, i3, etc) have this capability.
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the truth about electric cars
https://www.carbonbrief.org/factcheck-how-electric-vehicles-help-to-tackle-climate-change It does highlight the biggest problem for EV's: poor the high speed efficiency. First-gen and badly built ones are mostly city runabouts. Even expensive 90+ kWh cars like Ford SUV mustang and Audi e-tron are pretty bad at this metric because they have such a large frontal surface area and poor drag coefficient. Efficiency is king. For EV to replace petrol, we need more aerodynamic cars, not bigger and bigger batteries.
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the truth about electric cars
I bet it's along lines of "charging experience sucks, cars are great"
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Home Charger Options
We have 2.9 kWp W-E split, usually during sunny summer's day, we get just over 1kW of excess power. So no, I can never charge my car via solar due to minimum charge rate I mentioned earlier. Get assessment on what sort of solar production you'll get throughout the year. If you can get over 2 kW excess a good chunk of the year, then it's definitely worth going for a smart charger. 30 kWh = 90 miles. Do you often drive over 100 miles, more than 2 days back to back? If you drive 150 miles 1 day, but usually only drive 60 miles daily. The extra miles driven (60) will be recharged over the next 2 days.
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UK. RAC's EV Boost- Home Charging & Smart Tariff Solutions Youtube Vid
Boost? More like trickle charge. 3.5kW from a 100+ bhp diesel engine...... that's like idle consumption. When I saw the type 2 plug, was expecting 7-11 kW at very least. "cost of petrol around 10k miles is around £1500." Is that right? 15p per mile sounds high? I was estimating 10p/mile based on my 53mpg diesel averaged over last 4 years.
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Home Charger Options
I know recent Podpoints will monitor house consumption and lower charge rate to keep house consumption low. I'm sure smarter chargers like Zappi and openEVSE will also do this, because in order to monitor solar excess, it also needs to monitor house consumption.