08-05-2024, 01:27 PM | #76 | |
Bibliophagist
Posts: 39,652
Karma: 154147704
Join Date: Jul 2010
Location: Vancouver
Device: Kobo Sage, Libra Colour, Lenovo M8 FHD, Paperwhite 4, Tolino epos
|
Quote:
|
|
08-05-2024, 02:13 PM | #77 | |
Wizard
Posts: 1,035
Karma: 12018368
Join Date: Aug 2013
Location: Canada
Device: Sony PRS-650, Kobo Clara
|
Quote:
|
|
Advert | |
|
08-05-2024, 03:57 PM | #78 |
Wizard
Posts: 1,783
Karma: 26050790
Join Date: Sep 2017
Device: PW3, Fire HD8 Gen7, Moto G7, Sansa Clip v2, Ruizu X26
|
I learned a lesson towing one of those box trailers with my F-150 (the gas one, not the EV). I'm not a trailer guy, and this was a one-time tow across the country to help someone move.
Air resistance makes a big difference! Nobody told me I wasn't supposed to drag that trailer along behind me at 90mph. I didn't figure that out until after the trip. Meanwhile, while ON the trip, my gas mileage was about 7 mpg. I could barely make it from gas station to gas station. I was later told that if I had managed to constrain myself to 60mph and under, I would have saved several hundred dollars - or more - on gasoline during the trip. Oops! |
08-05-2024, 04:26 PM | #79 | |
Gentleman and scholar
Posts: 11,265
Karma: 110227191
Join Date: Jun 2015
Location: Space City, Texas
Device: Clara HD; Nook ST w/Glowlight, (2015) Glowlight Plus, Paperwhite 3
|
Quote:
The Volt gives me 50 miles on battery which works for about 90% of my day-to-day driving. But it also has a gas tank which gives me 350 miles. |
|
08-05-2024, 04:59 PM | #80 |
the rook, bossing Never.
Posts: 12,260
Karma: 89531599
Join Date: Jun 2017
Location: Ireland
Device: All 4 Kinds: epub eink, Kindle, android eink, NxtPaper11
|
It might a cube law? 3 times faster needs 27 x more energy?
Even square law would be 9 x more energy at 3x speed. But the shape of trailer, "tractor" and spacing between them acounts for a lot which is why birds fly in a > shape at a particular spacing. |
Advert | |
|
08-05-2024, 05:17 PM | #81 | |
Grand Sorcerer
Posts: 5,442
Karma: 100408738
Join Date: Apr 2011
Device: pb360
|
Quote:
At 90mph air drag dwarfs rolling resistance but it is 3x 30mph and increases linearly with total weight, so higher total weight would take more energy even in a vacuum. mpg also takes a big hit if there is a lot of climbing, even with regenerative braking, and if you run out of juice before significant descending you don't even get that. Last edited by j.p.s; 08-05-2024 at 05:19 PM. |
|
08-05-2024, 06:11 PM | #82 | |
Wizard
Posts: 1,783
Karma: 26050790
Join Date: Sep 2017
Device: PW3, Fire HD8 Gen7, Moto G7, Sansa Clip v2, Ruizu X26
|
Quote:
But the things that still give me pause are: (1) The batteries are very expensive to replace. ANd they may not even be available anymore for your car when the time comes for replacement. I wouldn't want an expensive EV, I would want a moderately priced one (if there is such a thing in the PHEV offerings). But that kind of makes the car disposable, due to the high cost of battery replacement - it's just not financially smart, for a less expensive EV. I don't see battery replacement as being feasible at present. Plus, what do you do with the old dead batteries? I don't think that's been adequately addressed yet. (2) The added complexity of having to design and maintain two separate engines/drivetrains - one electric and one gasoline. I'm not sure (I don't really know) if there is a wide availability of third party parts for EV's. I'm kind of thinking that they may only be available from the cars manufacturer for the most part. And if the manufacturer stops supporting an older vehicle (probably because technology innovations obsoleted it), where does that leave you? Or like has happened to a couple EV manufacturers, they totally out of business - yikes! - what do you do then? (3) Lack of standards across the industry. Aren't there still different types of chargers for different vehicles? Can a Chevy pull up and use a Tesla charging station? Or a Ford one? Maybe they can use them, but not in a fast charging mode. I don't know specific incompatibilities, but I believe there are still some present. (4) If the SHTF and we are in a grid down situation (maybe a big storm, violent solar activity, or even war) how are you going to charge EV's? Unlike gasoline cars where you can drive in a tanker of gasoline, you can't really drive in a tanker of electricity. At some time, EV's may be the way to go. But I don't think now is the time. At least not as your primary vehicle. I certainly wouldn't have an EV if I didn't also have gas powered vehicles that could take over 100% my transportation needs at a seconds notice. |
|
08-06-2024, 12:16 AM | #83 | |
Grand Sorcerer
Posts: 5,700
Karma: 66666666
Join Date: Dec 2011
Location: Australia
Device: Kobo Libra 2, iPadMini4, iPad4, MBP; support other Kobo/Kindles
|
Quote:
We are currently awaiting delivery of a BYD Dolphin with zero regrets, after research and extensive chats with friends who have been using EVs for a while. |
|
08-06-2024, 05:42 AM | #84 |
Resident Curmudgeon
Posts: 75,964
Karma: 134368292
Join Date: Nov 2006
Location: Roslindale, Massachusetts
Device: Kobo Libra 2, Kobo Aura H2O, PRS-650, PRS-T1, nook STR, PW3
|
|
08-06-2024, 07:22 AM | #85 |
Terraner
Posts: 529
Karma: 4455667
Join Date: Aug 2011
Device: Kobo Libra, Aura One, Kindle Oasis 1 & 2 ...
|
|
08-06-2024, 12:58 PM | #86 |
Somewhat clueless
Posts: 744
Karma: 9545975
Join Date: Nov 2008
Location: UK
Device: Kindle Oasis, iPhone 6 Plus
|
|
08-06-2024, 01:11 PM | #87 | |
Grand Sorcerer
Posts: 5,442
Karma: 100408738
Join Date: Apr 2011
Device: pb360
|
Quote:
Air drag increases as velocity squared, the power to overcome air drag increases as velocity cubed. Thank you for catching my mistake. |
|
08-06-2024, 01:13 PM | #88 | ||||
Gentleman and scholar
Posts: 11,265
Karma: 110227191
Join Date: Jun 2015
Location: Space City, Texas
Device: Clara HD; Nook ST w/Glowlight, (2015) Glowlight Plus, Paperwhite 3
|
Quote:
I bought it in September and didn't have to put gas in it until February. Quote:
Quote:
Quote:
|
||||
08-06-2024, 01:19 PM | #89 | ||
Somewhat clueless
Posts: 744
Karma: 9545975
Join Date: Nov 2008
Location: UK
Device: Kindle Oasis, iPhone 6 Plus
|
Quote:
Quote:
|
||
08-06-2024, 01:30 PM | #90 |
Grand Sorcerer
Posts: 5,700
Karma: 66666666
Join Date: Dec 2011
Location: Australia
Device: Kobo Libra 2, iPadMini4, iPad4, MBP; support other Kobo/Kindles
|
This one goes both ways. There were major floods in Australia a year or two ago (I think it was both, actually - we've had a pretty awful time with natural disasters). An acquaintance of mine felt a little smug charging his car from solar/battery setup and going about his merry way while people were unable to refuel with petrol. Distributed renewal energy systems are more disaster-resilient than fossil fuel distribution networks in some ways.
|
Thread Tools | Search this Thread |
|
Similar Threads | ||||
Thread | Thread Starter | Forum | Replies | Last Post |
Copyright & Pirated eBooks | KyBunnies | General Discussions | 16 | 03-14-2017 05:11 PM |
Pirated ebooks on Google Play? | GeoffR | General Discussions | 12 | 02-04-2015 12:27 AM |
Top 10 Most Pirated Ebooks of 2009 | Sonist | News | 42 | 05-22-2010 10:00 PM |
The 10 Most Pirated eBooks of 2009 | yagiz | News | 50 | 09-09-2009 08:02 AM |
Pirated ebooks on Amazon? | Daithi | Amazon Kindle | 27 | 07-16-2009 02:07 PM |