What is it With Tesla?

What made America great was lack of regulation, low taxes, and few lawyers...

What made America great was short...

(Sorry about that, an underpaid immigrant had to take my garbage.)

The history of Amerika shows peaceful respect for...

(Wait, that's not what I was going to say.)

Shay's rebellion proved that taxation and government were not needed...

(Wait, that rebellion showed a loose confederation of independent states would ultimately fail by itself. Brexit anyone?)

Amerikan Jingoism has kept all of us strong, almost pungent.

(No, wait that's not it either. I vaguely remember something about attention span.)

Squirrel!

That's absolutely absurd! Not surprising, coming from you though!

"President Dwight David Eisenhower, perhaps the last real Republican, had a 90 percent tax rate for the super rich during his administration.

Eisenhower explained it this way: The super rich could avoid the high taxes by investing their money in things that make America stronger. If they wanted to avoid high taxes, he said they could invest in business expansions and higher employee wages. They could give a million or two to tax-exempt non-profits that feed, house and clothe poor people of America, among other things"

The current regime is heading us down the road to becoming either a Russian annex or a third world joke of a country!

Socialist rhetoric....Those high rates were imposed by Roosevelt during WWII to help pay for the war effort...Raising rates in this economic environment and peacetime, would be nothing more than a power grab and a decisive move toward socialism...and eventual government collapse...

The taxes in those days were used more to control inflation, which now is done more or less by the Federal Reserve...Deficit spending exploded during WWII and the only way to hold inflation in check was to raise the income tax rate....now we raise the interest rate as well as other monetary control methods...

..."America's experience in World War II finally institutionalized deficit spending as national economic policy. Driven by military needs, the federal deficit skyrocketed from $6.2 billion in fiscal year 1941 to $57.4 billion in fiscal year 1943."...

https://www.thebalance.com/us-gdp-by-year-3305543

https://www.encyclopedia.com/economics/encyclopedias-almanacs-transcripts-and-maps/deficit-spending

BS!

The $1.5 trillion tax cut for business resulted in a $1 trillion corporate stock buy back and NO new business growth.

The trade wars are ruining our economy and just today the twitter in chief said he'd further collapse the economy by CLOSING the Mexican border!

Just how incredibly ignorant and stupid can the be?

The Federal Reserve is now nothing more than a puppet of the ruler who is insane! He controls it and it does his bidding.

Good luck with that!

It gave a .7% boost to GDP...

SolarEagle, you have nobody else to blame but yourself. You started this political vomitoria by immediately answering an engineering observation with an unsubstantiated political response. I did enjoy the brief recognition by others to being given an undeserved GA because I made a humorous but substantiated response to your political bias. Nonetheless CR4 is an engineering blog and my reply was not engineering related, it did not deserve a GA.

You willfully violated CR4's rule of conduct #5, again. I'm tired of this and I am tired of what seems like favoritism by CR4 administration in enforcing any of the rules. I get bumped down a net zero GA and your political comments incur no OT marks.

At one time CR4 provided a fun, informative platform for technical discussions. People of all stated political biases were marked to OT or deleted all together. I miss those days.

Undefined: <...we...>?

And now for something completely different...

... a brief discussion on the Tesla article.

From my experience in using many different forms of electric motors, the dominant drop in efficiency at higher rotation speeds happens due to the back EMF the motor itself produces will reduce the amount of torque produced while the purely resistive I^2*R parasitic losses stay nominally constant. I don't dispute that Tesla may have discovered a more efficient geometry to reduce even these losses but to not mention this well-known phenomenon makes me wonder if this article is only hype.

Well, it's patented applied for hype if nothing else. LoL

But again, my point being, research investment will now move the market regardless of the oil companies spending. All major car producing countries except Americas have accepted that as fact.

Finally, back to engineering!

Induction motors are already fairly efficient (85-97 percent). I wouldn't have thought there would be much room for improvement there, but I suppose every bit helps.

"Full load motor efficiency varies from about 85% to 97%, related motor losses being broken down roughly as follows:^[48]

• Friction and windage, 5–15%
• Iron or core losses, 15–25%
• Stator losses, 25–40%
• Rotor losses, 15–25%
• Stray load losses, 10–20%."

https://en.m.wikipedia.org/wiki/Induction_motor

I've worked with NEMA 23 sized stepper motors since the mid 80's. They have improved in their efficiency over those 30+ years. I've attributed it to R&D efforts at the manufacturers as well as improvements in the manufacturing processes, possibly tighter machining tolerances, better metal alloys or even improved winding techniques.

Assuming the folks who enhanced the performance of those little stepper motors are also responsible for improvements in induction motors, there's plenty of reason to believe there have been improvements over the last few years. How many and how much Tesla is responsible for can be debated, but I'll say that Elon seems to be able to put together a darn good team.

in a nutshell..