They should've had the car with high gears rolling and started the other car with lower gears from a dig to show top speed.

I disagree - I believe the difference in Torque was well-explained. The horse-power was constant. Since torque really only plays in the slower speed discussion, it makes perfect sense. Top speed is a different discussion altogether.

They did address this with the car and truck analogy.

But increase the acceleration

@@martinsvensson6884 then why can a 400hp truck pull 40tonnes and a 400hp sport car can pull 700kg??? Because hp isn't everything as explained in the video torque and rpm is.

...or per minute...hence RPM

thats exactly how I try to explain it to people but, I've never used that line before. I will from here on out explain with that one simple line.

Exactly! Torque is how hard something is rotating, horsepower is how much work that rotational force is doing… for instance a motor making 600ftlbs/300hp vs 300ftlbs/300hp as long as both engines are producing the same power they WILL pull the same weight all be it at a different RPM.

Doesn't sound a satisfying explanation though

@@charleskibathi9881 what's not satisfying about it?

Agree

So we now have transmissions with 8 or more gear ratios. Best of both worlds, with some additional power loss to friction and weight.

So would the lower torqued car eventually pass the other car if the race was longer?

@@Docfly62 Yes the video is missing a head to head race. Where the higher torqued car would take the initial lead and eventually be overcome by the lower.

@@Docfly62for sure, on a flat surface and without load.

Woah... That makes so much sense now. Great analogy.

Thanks old school video that explained it the same way, you know the one i'm talking about!

@@TENNSUMITSUMA I think we all know that 1936 video now thanks to the algorithm :D

@@VincentHermes 🤣

@plixplop Continuous levers is a great way to think of gears! Understanding gearing is really helpful to understanding why power is meaningful. As you can intuit, thrust at the wheel is what matters, whether we are talking about towing a heavy load or reaching a high top speed. Thrust is the torque the engine puts out times the overall gearing divided by the wheel radius. Overall gearing (both the parts fixed during design, and the parts selected during operation) is based directly on the relationship between present road speed and target engine speed. So the faster the engine can rev without lowering torque, or the more torque the engine can make without needing to turn slower to do it, the more thrust you have available at all speeds (because you have more available power). This is why knowing engine torque alone doesn't tell you anything definite about performance. Until you also know the speed the engine is turning, gearing (which dictates wheel torque) is undefined. As things begin to click, I want to caution you to trust nothing from this video regarding power. Good explanation of torque, but nothing they said about power was remotely true. 1:20 This statement is 100% false. Power is the time rate of work - put in layman terms, it is the strength of resistance times how quickly that resistance is overcome. Talking about "how many times torque is transmitted" is nonsense. 2:22 Also false. The mechanical power of the stalled car was zero. It wasn't overcoming anything mechanically. Electrically, the stalled car was consuming even more power than the moving one. The point is power was in no way similar between these two cars.

What school are you at?

Damn man, you need to drop out and find a better school

@@spazzwazzle The school system sucks it’s out of date.

@@spazzwazzle at least where I’m at.

S P I C Y M E M E S or start paying actual attention in his classes.

Well technically torque has a force component so it has a time component but relative to force then yes.

Hp is a result of torque over time

@@ouroesa no. You could apply torque to the end of time but if nothing moves there is no HP.

Torque=rotational force A force can be applied to something and no motion results. Without motion, there's no time measurement and no horsepower value.

@@ouroesa At the beginning when the cars couldn't pull the house- they were producing torque, however they did not move. The reason was horsepower. Well, not enough horsepower. So, you can either increase the hp of your motor or increase the amount of torque. You will do less work with more torque or more work with more hp. It's vastly more complicated than that, i.e.: friction, load, etc but you get the idea. You can move a mountain with a motor the size of a pencil eraser or the size of a warehouse. The only question is how fast do you need to move your mountain.

great example! But why in the case of this video, then the modified car took off faster? Doesn't it mean it had more speed compared to the unmodified version ?

@@avalanche9142 If the table had been longer the other car would have hit a higher max speed. It was accelerating more slowly, but assuming the limit is the electric motor speed, it had a higher potential top speed. You already know this, if you floor it in your car in first gear, it'll get to the top speed of the gear quickly. If you floor it in second it will accelerate more slowly but end up going faster.

@@aluisious Thanks a lot for the clarification!

@@avalanche9142 No, it means that it could deliver more torque to the wheels at the lower speeds because of the gear reduction (just like your motor car does). Under low friction conditions (flat surface, no house in tow), the high geared car would max out at a higher speed (run out of available excess torque with which to overcome air resistance) than the low geared car, because of the inherent maximum speed of the motor, which I've described in a post above.

2 cars that reach the 0-100 in 5 seconds do not cover the same distance in that time, the one with the most torque is the one that in that 5 seconds travels the most distance

@@riosena350 wrong

@@riosena350 Same speed * same time = same distance. And since they both hit 100 in 5 secs, their avg accelerations are same, so same avg speed.

Within an average, what is more valuable? that the peak of the action is reached at the beginning or the end, for example if you do the 0-100 in 5 seconds, and the average action is 0.56G, and this can be achieved in 2 ways that the first second the action is 1G and the rest of 0.45G, or that the first seconds are 0.45G and the last 1G, what method will allow you to travel more meters in that 0-100), a more extreme way to plan it is that the first second reaches 99KMH , and the other 4 you dedicate to adding that last KMH, the opposite would be that the first 4 seconds you only reach 1kmh and that last second you reach the remaining 99KMH, in what way would you travel more meters in that 0-100?

@@thekrakenrises9040 Power is torque X RPMs the higher the tachometer rises, the more power you have, a car with a lot of power but little torque will cost you up in the first moments, but a car with a lot of torque but little power will do very fast in the first moments but then it will you will run out of breath, in a 1/4 mile race in the first moments the car with more torque will move away even if it has the same 0-100 as the car with more power but ends up winning the car with more power for having better 100-200 , (the kinetic energy increases to the square of the speed), this is why a tesla model s performans beats a lamborginni aventador that has the same 0-100 2.7 seconds, in the first moments the tesla moves away but then the lamborginni to have better 100-200 surpasses it xD, sorry for my bad english

I drive many different cars before and it’s interesting to compare the two extreme ends, high torque cars with low BHP, and high BHP cars with low torque. They surely drive very differently.

The amount of torque (turning moment) for an otto cycle gas engine (conventional auto) is limited by the length of the lever arm of the crankshaft. The equivalent 'lever arm' of an electric motor is the back emf. Which allows greatest torque at low rotational speeds.

So why does a diesel engine have higher torque than a petrol engine?

@@petekay67 They have a longer stroke. Distance x Power = Force.

@@IgorArkin "wat? How come" - How come what?

Would also be worth exploring the relative atmospheric air density during test conditions, more over what where the friction coefficients of the choice of materials, or does the wife clean the lav when youre at work.

Change the gearing

Power still the same and it's in kWh or watts, P=w*T P - power (watts) ; w - angle speed (1/sec); T - torque (Newton/meters). It means same power, but if you'll elevate torque, you'll depress speed. this cars are bad example because motor RPM has to be equal to make experiment right.

@@user-kw3dp4iw5z and all cars have gears.

@@markdaniel8740 doesn't matter. Power 🔋 coming from motor through doesn't matter how many gears. Gears change speed and torque: more torque-less speed

Yes but that’s a different discussion entirely.

To add to your already good explanation, the difference between a heavy truck and a sports car with the same horsepower ratings is how much stress the parts can take and how they are geared. A top speed sports car is made as light as possible and the transmission is optimized for speed. Attach a large trailer to the back and you might bottom out the suspension, it will struggle to move, and you have a decent chance of breaking some part of the powertrain. A heavy truck won't keep up unloaded as it is dramatically heavier and its transmission is designed differently, but it will probably drag the sports car behind it (even if the car's brakes were locked) without difficulty and handle far heavier trailers without breaking anything.

They explained the transmission, Not the difference between torque and horsepower. 🤦🏻‍♂️

@@ParRagon- check the title of the video

@@anzac_biscuits4757 horsepower vs torque simplest explanation. And still they didnt really explain that, More how Cars would be able to apply That torque when gearing is changed. And which outcome low gearing vs higher gearing has at the Same amount of torque provided by the Motor.

@@ParRagon- ahh i see the confusion, i thought you ment the intention of the video was to explain gearing, my bad.

Torque does not have a time aspect. Horsepower does. Torque is only for one rotation. Horsepower is to move weight within a certain moment of time. So no matter hoe much torque you have, it’s useless if it takes much time to rotate. There are impact hammers having higher torque than certain cars. But imagine accelerating your car with an impact drill.

@@com2ghz They're not saying torque has a time aspect. Power has the time aspect, it's work over time. So higher speed = smaller time, therefore we usually have P = W/t, or re-written P*t = W, and since speed is inversely proportional to time, so t=1/v, so if we sub it in P*(1/v) = W, or P/v = W, which what the person stated (power over velocity = work (torque)). Think that math checks out, but either way, as you said, power has the time component, not torque. So by taking power and stripping away the time component (speed) you get work or torque, which is what they did.

Gears have mass and weight too, so eventually an engine can be too weak to get a car uphill if you take it to the extreme. Gears need energy to get moving and overcome friction.

very true and that's why on a slope you have even rev more, to convert that RPM to torque

@@GlasboxEngineering That's less about RPM itself and more about the torque curve of the motor. If the engine makes a lot of torque at or just off idle (like a diesel), less or no revving is necessary. We only need to rev when the torque output at idle is very low like it is on most engines to the point where it can't move the car on an incline. Giving it fuel increases the torque output, even if you don't increase the RPM at all.

Да вроде все аспекты покрыты... Это ведь об одном и том же с разного ракурса

Именно

Вообще понятие "лошадиная сила" сегодня очень относительное, есть точные величины, скорость, крутящий момент, число оборотов двс и колеса, а лошаниные силы вычисляются из этих параметров

А я всë ждал, когда же обьяснят наконец где лошади!

Нихрена не понятно 🤷‍♂️

Hello, I compete in VEX Robotics. Adding rubber bands to wheels to increase traction is something I learned very quickly. Not always necessary for drive wheels, but very good for fly wheels.

If the track had been longer, the "car" would have overtaken because it would have a much higher top speed. The "truck" just started quicker because of the lower gear ratio.

​@@seanrosedotcom Owh nice explanation, thank you very much

Momentum is the deciding factor, not torque or horsepower.

That's wrong though, entirely

This old saying has been proven wrong

Stepdads can't be trusted... Only REAL dads... unless your real dad says that horsepowere gets you to the wall and torque gets you through it... In that case, your real dad can't be trusted either.

This explanation is even more concise than this video

Tractor engine is bigger, have longer piston shafts and bigger transmission parts. Therefore the torque of tractor engine would be higher even if both has the same hp

@@ayva6ovay3gmail31 sure? Longer pistons - high rpm. The weight of crankshaft in Diesel engine lidl bit too much - good torque. But all the power of diesel comes from efficiency. 35% vs 25% in petrol engines ☝🏽

Момент трактора происходит за счет массивного маховика

@@user-db8ns8kn5q Так всё таки что важнее, объём двигателя или количество лошадей? На скорость, разгон , что больше влияет, ?

@@Heckfy197 на разгон момент, но учитывать длину передач их дружбу с двигателнм и скорость переключения как правило на каждой модели двигателя пик момента происходит на определенных оборотах , а на скорость длинные передачи

A 18V driver can generate up to 350nm of torque. Imagine it is made to drive a car instead of its 1L 3cyl tiny gasoline ICE that produces 150nm of torque. Use any gearing you'd like. How it performs, your guess?

@@berdmonte5370 The 18V driver rotates much slower than a car engine, so while it may have enough torque to move the car, it would only be able to move it at a very low speed. The car engine may produce 180 horsepower, but the 18V driver likely produces less than 1 horsepower. There is no substitute for power. If you want to move a lot of mass fast, you need a lot of power. There's no way around that.

@@jetengine7 tell it not to me

That's actually not why they do. It's because those engines have a very narrow rev range. 1000-2000 is their typical operating RPMs.

If I understand this correctly torque is power and horsepower is speed

@@cillianryan1065 no. Think it about this way: Horepower: the power your engine makes. Remember, both cars had the same "engine". Both have the same amount of HP. But thanks to the additional gears he put into the car, the power from the engine (equal in both cars) could be TRANSFERED more often to the wheels per seconds. This leads to a higher rotational force (like the extension of the wrench in the beginning). Thus meaning, the car with higher torque can pull the house, climb the hill and gets off the start better, because the powers is better transmitted to the wheels. Hope that helps

horse power describing the engine and torque describing the transmission.

@@cillianryan1065 @vrayn is correct, just remember one thing. The unmodified car will have a higher top speed than the car with the gear addition.

@@billyhess5263 why

Actually one of the boringest videos I've ever watched... I'm a mechanic and there would be better ways to show this... plus gloves dude seriously get a life

He said "SIMPLEST EXPLANATION" sir

horsepower is just a measurement of torque plus engine rpm. if you can produce high torque numbers at a higher rpm then the horsepower numbers will go up. the formula is, horsepower = torque x rpms divided by 5252.

Ah yes so really you could say a car with 500hp and 1000 torque would win against a same car with 500 torque and 1000hp ?? I thought HP was how fast the engine goes and torque is how that power gets put down to the ground

@@deathtoming2201 Horsepower is a marketing term and nothing else, torque is the force being applied. If we take weight out of the equation with the only variable being gear reduction it doesn't matter at what RPM the power is generated. What allows a car to accelerate is gearing a car to stay in the power band, a good example of this is a Ducati twin vs. an inline 4. On paper the inline 4's typically makes more HP but far less torque, generally speaking the sport bikes weight the same and have similar performance numbers.

@@michaelm106 yeah but I mean like Torque is obviously what puts power down from wheels to road but in a car for example the torque gets you 0-60 quick it’s the HP that lets you go the long mile as in 180mph like a car that has 600 torque and 400Hp compared to a car with with more HP same amount of torque at 600 the top speeds are always higher ?

Why, he?

With the information provided in this video I am expecting parts 2,3,4,5+6 to follow with actual results. Mass was applied completely wrong... Power to Weight was replaced with gear ratio!!! Torque definitions were almost none existant (Diesel engines). Rod lenth depicts combustion pressure!! (Forced induction requires Turbine Technology). The Torque is in Piston count!! (Spun Mass)

@@Gabriel_Moline Oh God, take that crap somewhere else (like back to your echo-chamber). Did you see the hair on that arm? Second question: Are the women in your family Italian?

@@randomsimpson I always find it amusing that the people who claim other people are snowflakes are the ones that are easily triggered

haha i was just thinking the same thing

I agree. We should have seen that the unmodified car would win a longer race due to higher top speed.

Yea

How about u do it

Top speed has nothing to do with horsepower or torque. Top speed is about gearing the longer gears you have the more top speed you get.. more HP and torque on helps you get to top speed faster.

Yes..this is just demonstration of torque... horsepower related you didn't show anything

Yea I feel like the video could've done a better job showing the detriments of the higher torque setup.

@@user-he8rl4sm3k Yes. For anyone who do not know it deeper, it may seems like the toy car with high torque had a better top speed. Wich isn't the case, this car reach a certain speed quickly, due to the high torque, but will not be able to reach a bigger speed.

Says someone who doesn't understand kinetic energy.

“Horsepower is how fast you’re going when you hit the wall. Torque is how far you go through the wall.” That is very, very wrong. And to think, that was said by your teacher! How far you go through the wall would only depend on the mass and shape of the car, not the torque generated by the engine.

@@morganmitchell4017 Right. It’s not the best illustration. I think the idea is that you assume mass and vehicle shape are standardized, and you have the engine running as you “hit the wall”. Then, torque will become more important that BHP. That’s why tractors and farm equipment have such high torque but low BHP; they need to pull very heavy loads at low speeds. Anyway, torque and horsepower are still very closely related.

​@@ChuckPM12 I still think your explanation is not quite there. With the right gearing, you can get any engine to produce any torque at the wheels (where it counts for pulling a load). The reason you wouldn't put a motorcycle engine in a tractor, for example, is that it only makes decent power at very high engine speed. If you ran your tractor at 10,000 RPM all day, it wouldn't last long, and neither would your ears.

This is exactly right. HP was created to compare different engines. So 700hp is 700hp and with gearing both engines can do the same thing. Though both engines might not last as long hehe, like you said

Finally someone that points this out. As long as an engine does some power, you can adjust the gearing for getting the same torque at the wheels. What can change though, is how the power curve is delivered. Diesel engines have the benefit of being high torque at low RPMs, which does help to avoid stalling the engine when the vehicle has to move much weight

@@piereligiodisante Correct. For those who are interested, this guy does a good explanation of why diesels fundamentally produce more torque and at lower revs. kzfaq.info/get/bejne/epyJoKSWyLrTnIU.html&ab_channel=EngineeringExplained

Not really, you only experience power. Well actually you only experience torque, but that's because of the power. See, simple.

Being more serious, say you have an engine that produces 100 lbf-ft at 100 rpm, and 75 lbf-ft at 200 rpm. You're going 20mph, you know at 200rpm you're going to have double the gear ratio. That will effectively double your torque. So if we assume second gear is 1:1 (and 100 rpm at 20mph) and first is 2:1 (200rpm at 20mph), After the gear box you have 150lbf-ft at 200 rpm. So even tho the engine is producing less torque, you're still getting more torque to the drive tires. It's the torque of the drive tires that your feel. Horsepower takes into account gearing. So when it's "engine" torque vs hp, it's always HP. Thing is, don't just look at the peak HP. you have to look at the entire power band.

You don't "experience torque". You "experience" power. In the simple act of activating your nervous system, said "torque" is performing work... thereby, it is power.

> Leverage > Torque. < Leverage < Torque.

It's very simple, Torque × RPM = Horsepower

@@tserzzForce + Leverage = Torque (Not just leverage alone) A lever without force produces no Torque.

Yep! That's why horsepower can be converted to watts; there's about 746 watts in one horsepower. And watts can be expressed as joules (energy) divided by seconds (time), so thus a horsepower is 746 joules of energy per second. If you have a 750 watt power supply in your computer, that's just about one horsepower! More power! Arr arr arr! Joules in turn are newtons times meters - where newtons are a unit of force equal to about a quarter of a pound.

Torque gets you moving, horsepower keeps you moving.

Does that make torque the derivative of horsepower?

@@jom0bx189 Hmm not sure. If you dont have power (hp) to get things moving, torque cant exist. So yeah I guess HP comes before torque.

@@jom0bx189 not quite. The formula is power = torque*angular velocity (P=Tw) where the angular velocity is in radians per second. It’s the rate of change of energy with respect to time. I think the title of this video is misleading. It’s really comparing the trade off between torque and angular velocity.

If both cars had their load removed and were on a flat surface, the unmodified one would have a higher top speed. Torque = rotational force. Extending the wrench arm gives more torque without needing more arm force. Horsepower = torque x rpm. As you imagine if you extend the wrench arm you will be able to move the bolt but you can't really make many rotations per minute, or you will get breathless and sore arms. However if you go to the gym instead you can use the basic wrench to move the bolt AND you will be able to make more rotations per minute. Horsepower is basically whether you can sustain such torque at higher RPM. It's a unit of power because it multiplies force (torque) with work (rpm = work over time).

When we want to know how a vehicle will perform (car, truck, train, boat, airplane, etc.) it really boils down to how hard the engine can push it while it's moving at some speed. The reason that knowing just the torque of an engine can't tell us this is that we we also have to know the leverage or gearing situation connecting the engine to the space it is going to move through (wheels, propellers, gearing, etc.). Knowing how fast the engine can be turning relative to how fast the vehicle is moving tells us this relationship. It tells us how much PUSH we get for some amount of torque. This is why power is such a foundational concept in understanding vehicle performance. Power is a rate of "doing hard stuff" (work). Power would not matter if the engine had a job where nothing moved, but then an engine would be a terrible choice because fixed structure can do those jobs indefinitely without using energy (no work is being done). Also as we know, IC engines can't run at zero rpm:)

@Strat Abuser I submit mine to be crowned as the best pfp

@Strat Abuser I whole heartedly agree

@Strat Abuser damn straight.

O KZfaq tbm me favoreceu ao recomendar está explicação. Fomos abençoados com um vídeo muito bem explicativo e informativo

Torque = Força. Cavalos = Velocidade.

Добавление шестерен это увеличение крутящего момента на ведущих колесах с одновременным уменьшением их угловой скорости. Если брать мощность на ведущих колесах N=T×₩ где Т - это крутящий момент, а ₩ - угловая скорость. При постоянной подводимой мощности можно ехать быстро, но на легке или медленно, но везя груз.

They did a fine job explaining torque, but please know that you have learned nothing remotely correct about power from this video. 1:20 This statement is false. Power is the time rate of work - put in layman terms, power is how strong resistance is TIMES how quickly it is being overcome. Talking about "how many times torque is transmitted" is nonsense. 2:22 Also false. The mechanical power of the stalled car was zero. Torque wasn't zero, but even torque at the motor wasn't the same between the two cars (because of how electric motors work).

@@drienkm why was the mechanical horsepower there zero and what do you mean by that exactly

@@xfdfff2620 The mechanical power in the stalled car was zero because power is not just force (like torque). It is force times movement against the force. No movement - no mechanical power (there was certainly electrical power though, but 100% of it was being turned to thermal power because the motor couldn't move.) Here's an example the might be clearer. There are large forces in the wood in a tree when the wind blows, but the tree needs no power to remain standing - it only needs material strength and no energy is used - no power. Likewise if you put a car in park on a hill and leave it, there is significant torque in the driveshaft, but no energy is needed to keep the car parked - no power.

@@drienkm do you think it wasnt able to put that power down, because of lack of torque in that scenario?

@@xfdfff2620 In a way, yes. The motor torque was actually higher in the stalled car than in the moving one and it was consuming more electrical power (a characterictic of electric motors), but the gearing was such that the load was still too high for the motor to turn, making it just a heater:)

Typically a longer stroke will result in a higher torque due to the pressure generated by combustion being applied to the crank rotation over a longer time period (crude explanation). Generally speaking; short stroke (often ‘over-square’) = higher rpm/horsepower whereas longer stroke = lower rpm/horsepower but higher torque output.

@@jonchilds1637 super explanation, thanks

Not really. Torque is rotation power, while hp is quantity of rotational powers per unit of time.

Horsepower can tell you how much relative (compared to other rpms) torque you can generate at the wheels after the gearbox is taken into account. Gearbox is a torque multiplier. Engine torque is only ever more relevant if there is no gearbox.

Stick to composing music. It's probably your jam anyway!

@@SlyNine Torque is what moves you. With no torque, you have no power. If you have a lot of torque, a very low amount of HP is still more than enough to get the job done. If HP is what mattered semi trucks wouldn't need engines that make 1600+ FT LBs of torque but only 300-500hp. It'd be the other way around they'd be rocking engines that made 1500+ HP and only a couple hundred FT LBs.

Torque is not a measure of power. Torque is force applied to a lever (e.g. a crankshaft...where the connecting rod attaches to the crank) at a certain distance from the center of rotation. This is why units of torque are a force and distance (so lb ft being a pound of force applied at 1 foot from the center of rotation). Power on the other hand is force times speed or torque times angular speed. Horsepower is a measure of power but with a scalar applied so torque times angular speed all divided by 5252.

Я так и нифига не понял, если поставить движек от феррати на тягач, он будет быстрее ездить, или нихуя не поедет! Всегда думал, что двигатель обеспечивает мощность, а КПП обеспечивает момент.

Rpm is the rate. Horsepower is total work being done

А знаешь почему так?)

@@romaskyline2729 Причина того, что у современных легковых авто с ДВС макс.крутящий момент ДВС достигается на средних оборотах двигателя, а макс.скорость авто на высоких оборотах, кроется в коробке передач. Теоретически, еще большую скорость можно развить, для данного конкретного авто, с данным ДВС, если бы у коробки передач этого авто была бы, условно, 8 (9/10/...) передача, на которой бы и происходило уравновешивание макс.кртящего момента ДВС силой лобового сопртивления авто, которая тем сильнее чем выше квадрат скорости. Но для автомобилей широкого потребления это, видимо, сильно усложняет конструкцию коробки и поэтому не встречается в "природе".

No not really. I tried that and I blew up the Tranny and Axle for expanding and over reaching it's capacity threshold I learned the hard way lesson after doing that. That's what happened to my 1999 Nissan Skyline R34, I didn't followed the specifications of it's tranny system and instead I increased it's Torque way above the engine's limitations or threshold without replacing the specific tranny, axle and gears to handle the higher amount of torque. And I blew up the Tranny on my 2nd race and lost $15,000 in the track (FYI, I don't do street race, I only race in the track, with big cash or pink slip as a bets and payments will do just fine)

In theory at top speed yes...BUT...You would need a transmission with 50+ gears to get the 600hp/400lb-ft Race car engine to pull the same speed/load as 600hp/3000lb-ft Caterpillar truck engine does in 13-18 gears...

@@misters2837 the number of gear needed only depends on your lowest/highest gear ratio and how wide is your power band, and how much you want to optimize your mileage at stabilized speed.if your power band is not super narrow meaning not NA high revving race tuned engine, 13-18 speeds will be plenty enough. you still have the cooling issue if you use an engine at high load/low speed where it's not intended to operate but nothing a cooling upgrade couldn't fix. otherwise, power is power, it doesn't care about displacement. wheel torque can be as high as you need with correct gearing and transmission speed for the torque make no mistake, I'm not saying you should swap your truck with a Honda S2000 because in the end it all comes down to reliability which is the reason working truck diesels are overbuilt

@@geemy9675 No.

@@misters2837 that's very concincing

So torque is how much can you carey but hp is how fast can you go carrying it?

@Помогай Бедным это бы просто показало закономерность расхода энергии на проделанную работу в зависимости от назначения, если это например буксир там скорость не важна, если это спорткар то там грузоподъёмность не важна, все зависит от назначения

@Помогай Бедным так не получиться выиграть и там и там, всегда в чем то проиграешь, ну как тебе объяснить? Ну возьмём трактор Т-40 1980 г. выпуска у него двигатель 50 л.с. Мак. скорость 27 км.ч. И ВАЗ-2101 1980 г. Мощность 59 л.с но мак. Скорость 140 км.ч. А теперь о прицепе что трактор может утащить до 7 т. А легковушка максимум до 1 т Вот видишь по мощности они почти одинаковы но за счёт того что коробки разные у них то и скорость и грузоподъёмность разная, что собственно и было показано в ролике, проще говоря они из легковушки сделали трактор и это получилось за счёт того что они проиграли в скорости

You're right, but the video is all the way wrong. If you measure the torque at the wheels, it would be higher on the geared car.

@@dabradguy But how do you measure horsepower at the wheel, and which car has higher horsepower at the wheel?

Agreed. This video doesn't explain at all why an engine has max HP and max torque at different RPMs. Based on the video you'd assume that max torque is at max HP. Also why a truck and a sport car have very different engines, even if they can have the same max HP? It seems all depends on gear but that's not true. You can't just swap the engines and expect the same results.

@@juzoli you measure horse power the same way. Torque * Rpm. so RPM would go down. I think the horsepower stays the same, or at least pretty close.

@@TheMule71 yeah, the parasitic losses alone would make the sports engine literally useless in a big rig.