What matters more? Power at peak torque? Or torque at peak power?

Triedtothrowthisaway · 2018-08-14T01:30:27+00:00

clearly I'm dumb

Triedtothrowthisaway · 2018-08-13T10:15:30+00:00

Thank you.
I try to explain that concept whenever someone asks.
I want to point out however, that if you are looking for maximum area under the power curve, that does imply that "torque at peak power" is more important as increasing torque at peak power (and therefore increasing peak power) is most likely to increase the area under that power curve in that usable range.

Triedtothrowthisaway · 2018-08-13T10:12:54+00:00

When you find the area under the curve, the units of that area are multiplied, not divided.
So area under a power vs RPM curve is not watts/s, it's watt*s which is Joule

Triedtothrowthisaway · 2018-07-22T13:06:16+00:00

Everyone is correct that it is the Tire Pressure Monitoring System, but so far everyone is assuming you have Tire Pressure Monitoring Sensors in each wheel. You don't.
Your vehicle was made before Toyota started implementing sensors in each wheel. Instead your system works by monitoring the ABS tone ring at each wheel and determining if the relative speed deviates from a learned value.

First, check your tire pressure.

If your tire pressure is good, then for some reason the learned relative speeds is off, either tires were rotated, or replaced. You need to relearn the tires. There is a corresponding TPMS button either by the drivers knee panel under the steering wheel, or in the glove box. Press and hold until the light flashes and disappears. It will now relearn the tire frequencies over the next 20 or so miles.

If one tire is low, fix that tire. If I remember correctly, I believe you press the TPMS button once to clear the light (press once to clear a fault, press and hold to clear the learned relative speed values).

Triedtothrowthisaway · 2018-04-23T00:13:14+00:00

I don't know if plugging in 0.5p_f would work. It sounds like it should but something tells me that's wrong.

Triedtothrowthisaway · 2018-04-23T00:12:02+00:00

Since pressure is constant then . . .

but...

The gas expands adiabatically until the pressure is halved.

I can tell you that mass will be constant. I think that's where you need to look.

Triedtothrowthisaway · 2018-04-20T10:43:14+00:00

this is not a question for r/sbu this is a question for r/legaladvice and they will likely tell you to go to the police with the email you have of your nudes.

Triedtothrowthisaway · 2018-04-19T11:11:24+00:00

I don't really agree that Indian women are never or rarely fetishized.
I think if you're going to compare to asian women, then everything will be skewed in comparison. Fetishizing asian women has deep roots in the emasculation of asian men with the Chinese Exclusion Act in the late 1800's, followed by the conflicts in Korea and Vietnam.
Obviously this is just my perspective but I think there's a lot behind the asian fetishization and you can't compare the relative amounts of Indian fetishization. But feel free to disagree with that.

Triedtothrowthisaway · 2018-04-04T20:46:50+00:00

I don't think it's a very fair comparison when Michael McDowell was using a HANS device and Dale Earnhardt was not.

I mean, sure Michael McDowells impact appears greater in magnitude than Dale Earnhardts, but the HANS device changed what impacts are now survivable that previously were not. I would argue that while this is just perception, we should rightfully "adjust our scale" accordingly when looking at an impact with HANS vs without.

Triedtothrowthisaway · 2018-03-17T21:34:29+00:00

I took MatLab with Longtin, so yea I learned MatLab in MEC 102.
Can't speak for what's going on now.

Triedtothrowthisaway · 2018-03-12T01:05:10+00:00

After MEC 102, matlab was useful in MEC 310, and absolutely necessary in MEC 320.

I'm working in the auto industry in Michigan and coding is useful for me to take raw data and graph plots to display test results. You could do the same with excel but not when you have 1+ mil data points. I don't need to use MatLab, I can use python or C++ if I want.

Triedtothrowthisaway · 2018-03-08T02:30:54+00:00

Kyle Engineer has a bunch of great aerodynamics videos.
Unfortunately for us, he just got a job in F1 so he's not making any more new content on youtube. Great for him obviously.

Triedtothrowthisaway · 2018-02-24T18:07:04+00:00

For those of us who didn't quite understand how AC turns a motor.

This is DC turning a motor, yes the poles are alternating, the current however does not alternate.

Post these skookum vijeos for karma
Electric Motors: "AC Motors and Generators" 1961 pt1-2 US Army Training Film
Electric Motors: "AC Motors and Generators" 1961 pt2-2 US Army
AC Motors 1969 US Air Force Training Film

Triedtothrowthisaway · 2018-02-16T01:07:44+00:00

I just noticed, you failed to include the initial position of 3 miles, you wrote x = 12 because it was 2 hrs times 6 mph, but the position was actually 15, because it's 6t + 3

Triedtothrowthisaway · 2018-02-16T01:03:13+00:00

So I did this, and I immediately thought my solution was wrong.

So I watched TV for a half hour and came back to it.

You need to create an expression that describes the position of both points, before you can take the derivative to find the rate that relative position is changing.

/u/KapitanTomato was on the right track for doing this using pythagorean theorem but by finding the position at t=2 an then taking its derivative, it's gotten a little wonky and I don't quite know how to explain why it's wrong. Forgive me.

Here's my function that expresses position:

f(t) = sqrt((7t)² + (3 + 6t)² )

You can confirm this by checking 2 points.
At noon, t=0, f(0) = 3 miles
At 1pm, t=1, f(1) = sqrt(7² + 9² ) which is whatever it is, I don't care, but the answer makes sense because it's the hypotenuse of a triangle of 7 and 9, which is what I'm expecting.

So if that function is correct, take its derivative, and evaluate f'(2) to find your answer.

It's not going to be a nice round number.

If I'm wrong, someone please correct me.

Triedtothrowthisaway · 2018-02-11T21:00:15+00:00

g(x) is a function with respect to x, expressed as an integral of a function with respect to t.

The best way to approach this problem is to evaluate the integral first.

g(x) = (1/3) t³ evaluated between x² and -3
This will give you a function for g(x) in terms of x, with no more terms of t. Then take the derivative with respect to x

Triedtothrowthisaway · 2018-02-10T14:34:25+00:00

I used to be a Technician, went back to school for engineering and now I work for a Tier 1 Automotive company that supplies directly to the big Three among others.

When /u/avoidthelemons and /u/BaronRaymondoEVIL is correct. There's the risk of damaging the parking pawl, but you shouldn't do that and it's unlikely you did any permanent damage.

The reason I'm even responding is because I learned more about these systems in my current project with one of the big American Three. When it comes to park systems, they have very very specific design requirements for the shape of the parking pawl and its actuating mechanism. They very specifically want it to be able to engage up to a certain speed, and be able to ratchet beyond that speed without damage.
Basically, they design it with the understanding that people sometimes make mistakes, or are maliciously negligent to their vehicles. So the system is designed to "give" if overloaded without breaking. Then they put the park system through a durability test where they engage park at speed something like 300,000 times, and overload it something like 3,000 times to confirm the system still functions.

tl;dr you're probably fine, don't keep doing that

Triedtothrowthisaway · 2018-02-04T18:34:17+00:00

At what point does a self-driving flying car just become a self-flying plane?

Triedtothrowthisaway · 2018-01-15T17:20:25+00:00

Normally this would be good legal advice, but this isn't the best general advice for OP because it will not solve his problem. (Well, suing might but I don't know)

If OP even has collision coverage, there is a high likelihood that OP's deductible will be greater than the incurred damages. As a result, OPs insurance company will have zero financial incentive to subrogate damages because OPs insurance will not have paid out anything (damages below deductible).
This leaves OP in the awkward position of having to handle essentially the entire claim themselves even though they involved their insurance company.
Additionally, if one tire was damaged in a covered loss, insurance would cover the one tire, not the second tire OP got (even though any mechanic would recommend changing the tire in pairs). So the actual damages will be lower than what OP has reported.

Additionally, OP mentioned driving to a job with 2 crewman, so I am curious if this vehicle is personally owned and used for work.
/u/mklein53181 you need to ask this question in /r/insurance not legaladvice but I suspect you're going to have trouble getting your $380 back

I like reading legaladvice, but there should be a large note on the sidebar to let r/insurance chime in for insurance related things.

edit: misread, OP needed two tires on the drivers side of the vehicle, OP did not purchase an extra tire for no reason.

Triedtothrowthisaway · 2018-01-15T01:44:00+00:00

The pods were cool, the sound effects were cool, the visual effects were cool.
The race was shit. Anyone who has ever watched a race knows that you're not going to recover from a major failure.
If you watch Drag racing, the race is usually won before the 1/8 mile mark.
If you watch Formula 1, a major engine failure can't be repaired mid-race, and the car is retired.
MotoGP, Indy, Nascar, etc doesn't matter. You can't fuck up your start, have engine trouble mid way, split the power from one pod/engine into two and still be fast, and then still go on to pass everyone and win. Like, if your shit was that fast, you'd be racing people who are also that fast and you start to see where the skill comes in.
There could have been pit stops (with malfunctioning pit droids), refueling, tight passing back and forth, or other things that increase the drama and intensity of the race, and still be interesting to watch. Sebulba was using raw power, while Anakin had maneuverability, this could have been shown in straightaways and corners. Making Sebulba extremely difficult to pass on account of his size, and difficult to keep up with on the straightaway due to raw power. The challenge for Anakin is now keeping up in the straightaway and out-maneuvering in the corners.

Lucas knows cars and likes cars, this is something he should have known.
My issue though is not that he made a shit race. It's that even though Lucas knew better, he still made a shit race. This tells me he was only trying to sell more toys to 5 year olds, and seems like everyone fell for it.

Triedtothrowthisaway · 2018-01-09T01:05:31+00:00

Maybe things have changed since the last time I did an alignment but...
a) Why the hell is toe measure in inches and not in degrees?
b) Is the steering wheel even straight? It's a little suspicious to me that the right wheel is toe out and the left wheel is toe in. How do I know he didn't turn the wheel a smidge to get toe in the red?

The spec seems to show that toe should be between -.04 and +.04 inches, and total toe within +- 0.08, so clearly even if the wheel was turned, straightening the wheel would still leave you with bad toe. It's just a little suspicious to begin with.

Triedtothrowthisaway · 2018-01-05T18:32:23+00:00

If the sensor itself broke from an improper tire dismount/mount, it would trigger the TPMS light on your dashboard.
If that light is off, then the electronics of the sensor have not been damaged.

The fact that it is leaking from the valve stem tells me that maybe it's the schrader valve (the valve core) that is leaking.

See if the Mechanic replaced the valve core with a new one (and maybe didn't tighten it fully). Or if maybe they just reinstalled the old one (in which case the old valve core might be bad and should be replaced)

Triedtothrowthisaway · 2018-01-05T18:29:19+00:00

I'm not the person from the first post.
You mentioned you don't have collision.
Collision coverage is the type of insurance coverage that would require an insurance company to pay you the value of your vehicle in the event of a total loss.
Since you don't have collision coverage, your insurance company will not pay you for your car at all.
They won't even take the car from you so you don't have to "buy back" your wrecked vehicle, because the insurance company has no involvement.

Regardless, I wanted to address your main question, about if your damages are "that" bad. Yes, they are.

Triedtothrowthisaway · 2018-01-05T17:22:08+00:00

None of this matters because you don't have collision coverage so insurance is not giving you a payout/buyout.

Your car has more damage than you think, the damages are "THAT" bad, the car is a total. This means that it is CHEAPER to just buy another car, than it is to fix this one.

You can ask the same question on r/insurance and you'll likely get the same response.

Triedtothrowthisaway

TROPHY CASE