Tesla semi

[houstonscott]

I don't own a Tesla. Or an Insight.

Sorry, I thought you said you owned a Tesla S, guess that's someone else in the thread.

 

[sd455dan]

What is your background and education? Ask an engineer and they will tell you that any tech has an absolute limit, a maximum possible limit and limit that is a bell curve with the best performance per dollar per time per reliability and per safety .
This is why the Concord was parked . This is why the US still flys the U2 instead of the ST-71. Even the super duper B2 is sub Sonic and the F35 is subsonic with the ability to briefly sprint super sonic.
It is why the best efficiency for an internal combustion reciprocating diesel is approx 50% and that is compound with exhaust heat extraction. Try to tell people that the 200mpg carburetor does not exist and they will fight you to the death because they want to believe they can have it and save money . And they believe oil companies are villains hiding the 200mpg carb. Take a look at the btuç—´ in a gallon of gasoline and tell us how 200mpg is possible . Same analogy for battery storage .

I think you mean SR-71 or the A-12

Shell scientists did experiments and a book was even written,

"Fuel Economy of the Gasoline Engine" (ISBN 0-470-99132-1); it was published by John Wiley & Sons, New York, in 1977 One of the chief scientists quoted well over 300 mpg




here is a small discussion on some of the findings in the book
Shell Oil Company achieves 376.59 mpg in test car at Wood River Laboratory

Rumor has it that it has since been removed from the National archives or Library of Congress.?..


The car has been found that achieved 377 mpg:

Shell Oil's 377 MPG 1959 Opel - YouTube

Gasoline may have been (reformulated) and the vaporization has been reduced to the point that vapor carbs no longer are feasible.

There was an interview with one of the Shell scientists years ago that was involved with this project but I have not been able to find it so far.

also found a PR letter from Shell to an interested party, but the quoted mpg is (only) 297...

http://www.opel-p1.nl/custom/testcar/wo5778a.jpg

 

[Egon]

You know you're telling a guy with solar panels not to take tax rebates, right?

:thumbsup::thumbsup::thumbsup::thumbsup:

 

[4570Man]

I think you mean SR-71 or the A-12

Shell scientists did experiments and a book was even written,

"Fuel Economy of the Gasoline Engine" (ISBN 0-470-99132-1); it was published by John Wiley & Sons, New York, in 1977 One of the chief scientists quoted well over 300 mpg




here is a small discussion on some of the findings in the book
Shell Oil Company achieves 376.59 mpg in test car at Wood River Laboratory

Rumor has it that it has since been removed from the National archives or Library of Congress.?..


The car has been found that achieved 377 mpg:

Shell Oil's 377 MPG 1959 Opel - YouTube

Gasoline may have been (reformulated) and the vaporization has been reduced to the point that vapor carbs no longer are feasible.

There was an interview with one of the Shell scientists years ago that was involved with this project but I have not been able to find it so far.

also found a PR letter from Shell to an interested party, but the quoted mpg is (only) 297...

http://www.opel-p1.nl/custom/testcar/wo5778a.jpg

Of course it's been removed. And if I was guessing I'd say Shell owns the patent. If you had millions of dollars at stake ( probably billions) wouldn't you keep such things off the streets.

 

[houstonscott]

I think you mean SR-71 or the A-12 Shell scientists did experiments and a book was even written, "Fuel Economy of the Gasoline Engine" (ISBN 0-470-99132-1); it was published by John Wiley & Sons, New York, in 1977 One of the chief scientists quoted well over 300 mpg here is a small discussion on some of the findings in the book Shell Oil Company achieves 376.59 mpg in test car at Wood River Laboratory Rumor has it that it has since been removed from the National archives or Library of Congress.?.. The car has been found that achieved 377 mpg: Shell Oil's 377 MPG 1959 Opel - YouTube Gasoline may have been (reformulated) and the vaporization has been reduced to the point that vapor carbs no longer are feasible. There was an interview with one of the Shell scientists years ago that was involved with this project but I have not been able to find it so far.

I notice there was no test of the claims. And VW Polo's TDi 3 cylinder HP diesels exceed 100mpg now. Wouldn't matter to me if it got 500mpg, I'm not interested in living itty-bitty.

 

[sd455dan]

Of course it's been removed. And if I was guessing I'd say Shell owns the patent. If you had millions of dollars at stake ( probably billions) wouldn't you keep such things off the streets.

Used copies of the book do show up even on amazon from time to time...

can you imagine the losses in Fed and state fuel taxes this would also have caused.

 

[houstonscott]

Used copies of the book do show up even on amazon from time to time... can you imagine the losses in Fed and state fuel taxes this would also have caused.

Those patents are long ago expired. It's tin foil hat stuff.

 

[TemporaryKubotaOwnerMark]

Why do you say he hasn't delivered? Surveys show Tesla Model S owners are very happy with their cars.

And the first few waves of investors in any Ponzi scheme are very happy with their investments. Just ask Bernie Madoff.


Tesla is still not making a profit. That's not delivering. It's a Ponzi scheme funded by taxpayers.

Analysis shows that this type of taxation would heavily favor the wealthy. Are you okay with that? (I'd make out like a bandit, so I'm okay with that.)

You suggestion will tax the people on bottom the most. Low income people spend most of the money to live.

Look up the Fair Tax. Problem solved.

 

[TemporaryKubotaOwnerMark]

Okay then answer me this.

Cellphone data speeds have exploded over the last 10 years(10KB/sec from GPRS up to 40MB/sec for currently deployed 4G LTE). Just to get that in absolute terms that's 10,000 to 40,000,000 bytes per second. In that time the allocated frequency ranges haven't increased that much, most of the 4G allocations are only 40Mhz wide and support more users at more speeds than before.

You know the current target for 5G is 1gbps in metro areas? That's not 10x increase it's a 25x increase which will be rolling out in the next 10 years.

We already have point to point links in the 10s of gbps.

We're also already exceeding the traditional Shannon limit using CDMA + compression.

I work in that industry, I have an idea or two in what carries do to hit their data capacity . You might want to look up CDMA which let's you serve many users over a single channel simultaneously.

An idea, perhaps, but not much understanding, apparently. You are playing in my sandbox. I'm an engineer working for one of the Big Four cellphone companies, and I've been doing this since cellphones were installed in cars, and handhelds were a marketing promise. I worked for William C.Y. Lee, who was one of the pioneers at Bell Labs in developing the cellular technology that became AMPS.

We are not exceeding Shannon's limit. Nobody knowledgeable thinks we will.

What we are doing is getting very creative with re-use and carrier aggregation. For those who don't know, that's adding channels together to serve the customers that have a good enough signal to make use of it. For example, if I have a site with 3 10 MHz channels, I can add 2 of them (2CA) or 3 of them (3CA) together to make a massive pipe for customers who can take advantage of it, while keeping them separate for customers who have a lousy signal and wouldn't really benefit anyway. (They'd just rob capacity from other customers.)

The larger point is, many people simply assume that there is no limit to what we can do, so it makes perfect sense to them to invest tax dollars in schemes that require a violation of basic physics, because, hey, we always find a way, so we always will.

That's as nonsensical as saying that it can't be done because we haven't done it.

 

[TemporaryKubotaOwnerMark]

Those patents are long ago expired. It's tin foil hat stuff.

Family lore has it that a great uncle retired nicely after selling his carburetor patent to Chevron. Dunno if it's true, but even if true, like you said, the patents died a long time ago, and modern fuel injection systems are getting all that gas has to give. There are no 300 mpg carburetors being sat on by the oil companies.