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Maggie’s Motivational Pic Thread v2.0 - - New Rules - See Post #1

Nah, it probably makes no difference, you just want to argue.
kzl2WOT.gif
 
Not a very good advertisement for their stroker motors. When the crank is laying on the ground they should have blurred the sponsor ad on the hood
That happens sometimes running nitro. It's the magic muffler AA/Fuel altered, this wasn't an out of the ordinary situation.

That pictures passed around a lot, it was a fill in driver and they didn't torque the bottom end, supposedly.
 
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Ahhh, the serbu of the auto world.
That happens sometimes running nitro. It's the magic muffler AA/Fuel altered, this wasn't an out of the ordinary situation.

That pictures passed around a lot, it was a fill in driver and they didn't torque the bottom end, supposedly.
It was a bad load... I mean, it was the driver's fault, no wait... It was the fuel.
Yeah that's it
 
Ahhh, the serbu of the auto world.

It was a bad load... I mean, it was the driver's fault, no wait... It was the fuel.
Yeah that's it
Yup.
Ripping 10-20 1/2 high strength bolts out (depending on if it's 2 bolt or 4 bolt mains), or breaking them off....ripping the entire bottom 1/2 of the engine block apart.
You do know that pistons don't come out the bottom....so it broke 8 rods,or ripped apart 8 pistons too.

I'm wagering the crankcase filled with fuel and then ignited.
It used to happen with older Chevy engines and a bad fuel pump diaphragm.
I've only seen it once, but it blew upwards splitting the intake down the middle and pushing it thru the hood, the valve covers were lifted about 3-4 inches and held on by little strips of metal where the bolts actually held on.
Quite the scene.
 
I've been trying to be nice, but your full of shit. Everything you own is the coolest and fastest.

Even talking about illnesses on another thread pretty sure it was you and you're also the sickest, you're the best at everything we get it. 👍🏼

All you have to do is stop making shit up and exaggerating
Oh, there it is.
You have small penis complex, obvious as hell.

Don't worry, once you hit puberty you'll have some hair on your ass.
It's all part of growing up son.
 
I've seen it from piston rings. Either misaligned, end gaps not right or plain old poor cylinder walls.
Mix in super combustible fuel and it's the fourth of July
Yup.
Ripping 10-20 1/2 high strength bolts out (depending on if it's 2 bolt or 4 bolt mains), or breaking them off....ripping the entire bottom 1/2 of the engine block apart.
You do know that pistons don't come out the bottom....so it broke 8 rods,or ripped apart 8 pistons too.

I'm wagering the crankcase filled with fuel and then ignited.
It used to happen with older Chevy engines and a bad fuel pump diaphragm.
I've only seen it once, but it blew upwards splitting the intake down the middle and pushing it thru the hood, the valve covers were lifted about 3-4 inches and held on by little strips of metal where the bolts actually held on.
Quite the scene.
 
I feel like I need to add this, sorry.
Horsepower will not move a motorized vehicle 1 inch.
It's torque that matters, and it's torque that is measured on a dyno.
Horsepower is nothing but a mathematical equation derived from the torque measurement.

Ask any *real* engine builder.

To make torque, the reciprocating assembly must have inertia.
The more inertia, the more torque.

Ah hell....not much use attempting to explain physics on a gun forum is there ?
Electric motors make maximum torque at 0 rpm. Inertia isn't torque; what your stating in your example is kinetic energy.
 
Electric motors make maximum torque at 0 rpm. Inertia isn't torque; what your stating in your example is kinetic energy.
You do realize that 0 RPMs means the engine is not operating.....right ?

BTW, here is the formula.
K = 1 2 I ω 2 . the kinetic energy of a rotating rigid body is directly proportional to the moment of inertia and the square of the angular velocity.

Kinetic Energy and Inertia are directly related, not the same, but you can't have 1 without the other.
 
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That’s the lake placid movie animatronic gator
I briefly worked on that. It was designed and built by a pretty ingenious guy up in Vancouver B.C. It's been a long time ago now, I don't remember his name. Helped him out with the Servo Motors and Servo Drives.
 
Let's do these one at a time. If a motor is producing a rotational force, it is producing torque. This does not require rotation, it is a force. If you put a wrench on a nut and push, you are applying torque whether the nut moves or not. Thank you for admitting that inertia and kinetic energy are not the same thing; but the issue at hand is neither one is torque.
You do realize that 0 RPMs means the engine is not operating.....right ?

BTW, here is the formula.
K = 1 2 I ω 2 . the kinetic energy of a rotating rigid body is directly proportional to the moment of inertia and the square of the angular velocity.

Kinetic Energy and Inertia are directly related, not the same, but you can't have 1 without the ot
 
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Electric motors make maximum torque at 0 rpm. Inertia isn't torque; what your stating in your example is kinetic energy.
Well, you have to make sure what control conditions you are specifying. Assuming that the motor is sized for the load properly and it is being started "Across the Line" (Via an AC, Three Phase Contactor), the general rule of thumb (there are many exceptions however) is 600 to 800 percent inrush current (of Motor nameplate/rated current) and approximately 250% starting torque. When starting the motor Across the Line, the Motor should come up to "Base Speed" (the Motor's nameplate rated RPM) quickly (as in just a few seconds), otherwise, you run the distinct risk of burning it out (very quickly).

If the Motor is designed/manufactured/applied as an AC "Vector" Motor and is connected to an AC "Vector" Drive, yes, you can get up to 250% torque from the motor (intermittently) from zero to base speed of the Motor, assuming the Vector drive has enough current (on an overload/intermittent basis) to supply the motor. The Vector Motor/Drive combination is known as "Constant Torque". In the context of Constant Torque, the general rule of thumb is that the Motor can/will deliver 100% torque "Constantly" anywhere from zero speed, throughout the (Base) speed range, all the way up to Base Speed. The most common Three Phase AC Motors are 4 Pole and are rated between 1725 RPM and 1795 RPM, depending on the size of the motor. The larger the Motor (into the Hundreds/Thousands of Horsepower), the lower the Slip, hence the higher the Base Speed RPM. 100% continuous torque indicates a properly applied Vector Motor/Drive combination. Above Base Frequency/Speed (of the Motor) the Motor's torque capacity falls off, due to the Vector Drive no longer having any more DC Link voltage available to maintain the Volts to Hertz (V/Hz) ratio and force more current into the motor. This is why you will never see AC Vector Motor/Drives on Elevators set up to go beyond the Motor's rated Speed/Frequency. Going above Base Speed on an Elevator (Vector) Motor/Drive combination is not done because you lose braking capacity the higher you go above base speed.

Conversely, with the Vector Motor/Drive combination, it's "watts in/watts out (and subtracting losses). So, if you are starting from a low or zero speed, the voltage applied to the Motor is very low, but the current can be as high as the Vector drive is capable of delivering (on either a continuous or overload basis). This is why most Vector Motors are supplied with full speed, separately powered blowers on the back of them). As a result, upon startup, the Motor can be producing large amounts of torque (due to the current capacity of the Vector Drive), but the line current going into the Vector Drive will be very low, nowhere remotely close to what the Vector drive is providing to the Vector Motor. As the Motor speed/Vector drive output Frequency increases, the Vector Drive output Voltage increases and the AC Input Current to the Vector Drive also increases. At Motor base speed/frequency, (for a given amount of load) the Vector Drive's output will mirror the AC Input, in terms of voltage and current. There are system losses that need to be considered, but they are usually in the area of 5 to 7.5%. So, not huge, but the Vector Motor and Vector Drive can be "Upsized" to cover those losses, if need be. Meaning, if the Torque/Speed requirement is on the ragged edge for a 10 HP and the losses are eating up any leftover margin, the Motor and Drive can be "Upsized" to 15 HP. Yes, we always hated the "HP" term. I always told Customers to forget about HP, just tell me what the speed range is and the worst case torque requirement. Yes, HP is nothing more than a mathematical formula (that doesn't really tell you very much (HP = Torque x RPM/5252).

As far as the Inertia/Torque comment above. No, Inertia is not Torque. They are two distinctly different terms.

Inertia;

"Inertia is the resistance of any physical object to a change in its velocity. This includes changes to the object's speed, or direction of motion".


Think of a Flywheel (or the main Wheels/Rollers on a Dyno). It has a distinct characteristic of Inertia. Regardless of rotational speed (low speed, high speed, direction, etc.) the Flywheel has no "Torque" of it's own. It is only when you try to change the Flywheel's Speed that Torque is required to do so. (Actually, at a constant speed, a little bit of Torque is required to overcome the effects of windage and friction of the Flywheel). When a Speed/Direction change is required, it is Torque (provided by the Motor) that acts upon the Flywheel and it's associated Inertia. For a given amount of inertia, it takes more Torque (and Vector Drive Current) to effect a rapid rotational speed change than it does for a more gradual (slower/lower rate of)speed change.

Signed,

A 35 year Veteran of the Motor/Drive/Power Electronics Industries.
 
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That happens sometimes running nitro. It's the magic muffler AA/Fuel altered, this wasn't an out of the ordinary situation.

That pictures passed around a lot, it was a fill in driver and they didn't torque the bottom end, supposedly.
If really want to get into why stuff went boom so much in that era look for the series on "The Surfers" on youtube. Methanol was one of the worst things you could dilute it with. Back then no one truly knew the science behind what they were doing. Jobe and Skinner were 'nerds' of the era and figured it out before anyone else. The competition was running 75% Nitro, they were running 98% with 2% Toluene. When they fired it up everyone knew it was them because no one else sounded like that.
 
Well, you have to make sure what control conditions you are specifying. Assuming that the motor is sized for the load properly and it is being started" Across the Line" (Via an AC, Three Phase Contactor), the general rule of thumb (there are many exceptions however) is 600 to 800 percent inrush current (of Motor nameplate/rated current) and approximately 250 % starting torque. When starting the motor Across the Line, the Motor should come up to "Base Speed" (the Motor's nameplate rated RPM) quickly (as in just a few seconds), otherwise, you run the distinct risk of burning it out (very quickly).

If the Motor is designed/manufactured/applied as an AC "Vector" Motor and is connected to an AC "Vector" Drive, yes, you can get up to 250% torque from the motor (intermittently) from zero to base speed of the Motor, assuming the Vector drive has enough current (on an overload/intermittent basis) to supply the motor. The Vector Motor/Drive combination is known as "Constant Torque". In the context of Constant Torque, the general rule of thumb is that the Motor can/will deliver 100% torque "Constantly" anywhere from zero speed, throughout the (Base Speed) speed range, all the way up to Base Speed. The most common Three Phase AC Motors are 4 Pole and are rated between 1725 RPM and 1795 RPM, depending on the size of the motor. The larger the Motor (into the Hundreds/Thousands of Horsepower), the lower the Slip, hence the higher the Base Speed RPM. 100% continuous torque indicates a properly applied Vector Motor/Drive combination. Above Base Frequency/Speed (of the Motor) the Motor's torque capacity falls off, due to the Vector Drive no longer having any more DC Link voltage available to force more current into the motor. This is why you will never see AC Vector Motor/Drives on Elevators set up to go beyond the Motor's rated Speed/Frequency. Going above Base Speed on an Elevator (Vector) Motor/Drive combination is not done because you lose braking capacity the higher you go above base speed.

Conversely, with the Vector Motor/Drive combination, it's "watts in/watts out. So, if you are starting from a low or zero speed, the voltage applied to the Motor is very low, but the current can be as high as the Vector drive is capable of delivering (on either a continuous or overload basis. This is why most Vector Motors are supplied with full speed, separately powered blowers on the back of them). As a result, upon startup, the Motor can be producing large amounts of torque (due to the current capacity of the Vector Drive), but the line current going into the Vector Drive will be very low, nowhere remotely close to what the Vector drive is providing to the Vector Motor.

As far as the Inertia/Torque comment above. No, Inertia is not Torque. They are two distinctly different terms.

Inertia;

"Inertia is the resistance of any physical object to a change in its velocity. This includes changes to the object's speed, or direction of motion".


Think of a Flywheel (or the main Wheels/Rollers on a Dyno). It has a distinct characteristic of Inertia. Regardless of rotational speed (low speed, high speed, direction, etc.) the Flywheel has no "Torque" of it's own. It is only when you try to change the Flywheel's Speed that Torque is required to do so. (Actually, at a constant speed, a little bit of Torque is required to overcome the effects of windage and friction of the Flywheel). When a Speed/Direction change is required, it is Torque (provided by the Motor) that acts upon the Flywheel and it's associated Inertia. For a given amount of inertia, it takes more Torque (and Vector Drive Current) to effect a rapid rotational speed change than it does for a more gradual (slower/lower rate of)speed change.

Signed,

A 35 year Veteran of the Motor/Drive/Power Electronics Industries.
Blah blah blah, how does that having any effect on @akmike47 's Tesla powered 12 speed dildo?