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Go on youtube and there are many many videos of rich morons wrecking supercars who's performance far exceed their ability to drive. This will be no different.
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Cheers...Daryl Life is too important to be taken seriously |
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i guess sometimes in life it takes a leap of faith to move forward from the same old same old. as much as i like what elon musk has accomplished i still hold out for the hydrogen fuel cell as being out best alternative to fossile fuel.
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ILLEGITIMUS NON CARBORUNDUM ''Don't Let The Bastards Grind You Down'' |
#48
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https://jalopnik.com/5829059/top-ten...to-drive-fast/ Video... https://www.youtube.com/watch?v=s0MjVlQP8hU William |
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i guess sometimes in life it takes a leap of faith to move forward from the same old same old. as much as i like what elon musk has accomplished i still hold out for the hydrogen fuel cell as being out best alternative to fossile fuel.
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ILLEGITIMUS NON CARBORUNDUM ''Don't Let The Bastards Grind You Down'' |
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The Nikola is a way better machine on every level. Hydrogen fuel that is produced with solar power is a win win + a 1200km range. Non of the downsides of heavy batteries and limited load and range that the Tesla is promising. A established and growing network of hydrogen fuelling centres and a 15 minute fill time. So much better than long charging periods. The Tesla would work in a situation where the cargo runs are short haul and repeating. I would prefer a switch to hydrogen powered cars and electric cars. Not this head long rush to electric without any thought for rapid change batteries and swapping stations. electric cars are like bottom bracket "standards" for bikes. If we want to move away from ICE cars we need a way for people to actually go places without extended charging stops, having to plug in everywhere they park etc. This means standardization. We did it with fossil fuels and we can do it with electric and hydrogen cars.
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Cheers...Daryl Life is too important to be taken seriously |
#51
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You can see how the claimed 300-500mi range would be an issue. The tech is headed in the right direction. Just not enough to be used to make drivers or companies profitable. Range needs to go up significantly and weight of the tractor needs to come down substantially to scale he weight needed to haul common goods that these companies are hauling. Last edited by providence; 11-18-2017 at 08:58 AM. |
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in this type of scenario, there could be a "bank" of charged tractors waiting somewhere and a driver could use a tractor till battery dead and just grab a new one and continue work. would do wonders to reduce the emissions locally in this scenario. obviously i only gave this a passing thought, but in the right circumstances, with the right clean air incentives, these could work. for long haul trucking, probably not there yet. just some thoughts.
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http://less-than-epic.blogspot.com/ |
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understood. hence the incentives part. if port cities get serious about cleaning up their air quality, this could be an option.
definitely not thinking we are ready for prime time here, but i see this as progress.
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http://less-than-epic.blogspot.com/ |
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Depends on the port. CA initiatives have forced many independents to run new trucks. There was an article in the WSJ or USA Today recently about it. I see trucks like this working for short haul operations. The technology really isn't much different than equipment used in the dc. Electric lift tucks, etc have all but replaced propane-fueled equipment where I work. We've got a huge footprint from LTL to regional/OTR, local and final operations to warehousing, freight-forwarding, etc. Much of what we haul for our customers is well below 25k lbs in a 53' standard van and less than 350 miles total for a day. Something like this would fit very well. The recharge time and battery life would be a concern. Sent from my iPad using Tapatalk
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Jeff |
#59
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500 mi of range at 65mph
That is fantastic numbers for a truck moving 80,000lbs.
But what is not stated is that it takes a huge battery pack to do that. If we assume for a vehicle of that size power required is roughly 1kWh/mi that would mean that the pack has to be at least 500kWh... these packs will cost a lot and weigh a lot. But 500kWh is probably on the low side, typically Lithium-ion packs don't like to be used in the top 20% and bottom 20% of their charge as that reduces their life, so to get 500mi the pack would need to be ~800kWh to get 500mi of range that is claimed. But here is the kicker typical trucks get about 7.5-8.5 on average when assuming no off cycle loads (idling) and using 139,000 btu /gal of diesel the energy per mi is more like 5kWh per mile so the pack to get 500 miles would need to be considerably bigger or have an extensive amount of regeneration figured in. I used the 1kWh estimate which based on all this is a very conservative number in the following calculations. Cost - Tesla stated that their batteries cost $190 per kWh back in 2016 so that means the cost of a 800kWh pack alone is $128K just for batteries. But lets assume they are getting cheaper with the new factory, call it $110/kWh that is still $88K in batteries alone. A typical class 8 diesel tractor like shown by Tesla would be in the $120K range. Weight -Tesla claims that 85kWh pack weights 1200lbs or 14lbs/kWh which would be 12,000 lbs for a 800kWh pack but as the weight increases so will the structure to support it so I would estimate closer to 20Lbs or 16,000lbs. A typical 15L diesel engine only weights ~3,500 lbs. That means a truck operator would haul ~10,000lbs less in load which is how they get paid... So you can get Zero emissions but the truck will have to cost significantly more and weigh considerably meanly less payload and that is using my conservative estimates. What if it is closer to 3kWh, then triple all those number. Definitely interesting but I think we need to see more of the actual details to see how this will pan out for Tesla and or actual test data from the evaluation trucks to see if it will pan out. Lots of showmanship here which is typical for Tesla/Elon. Last edited by sand fungus; 11-18-2017 at 06:35 PM. |
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Thanks guys - that is good news and I'll tell him that when I see him next week.
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