0 bhp at 400 rpm???

  • Thread starter Thread starter duhuh
  • 61 comments
  • 4,410 views
im hopin you can tune em :D then you could smoke em
23tsmokin.jpg

t-rod anyone :D
34753484.tlc0402loDSCN7458.jpg
 
Majin SSJ Eric
I was merely mentioning that your description of a "horsepower" is not the only accepted definition of the term.

Yes, it is.

There is only one definition for each unit. The definition you gave was for the "metric horsepower", a totally different unit. "Horsepower" is not the only accepted unit of POWER - there's horsepower, metric horsepower and watts, to my knowledge - but 550ftlb/s is the only accepted definition of horsepower (although 550lbft/s is identical). 75kgm/s (or 75mkg/s, I guess. I've never seen it written down as such though) is the only accepted definition of the PS. Horsepower is an immutable unit, like the joule, the hectare or the Pascal.

Is a metre a metric yard? Can the definition of a metre be 100cm OR 12 inches? No. A metre is not a metric yard. An horsepower is not a metric horsepower. The definitions for each do not cross.


People can also note here that power outputs - the clue is in the units - are a direct function of engine torque. An engine producing 197hp and 130ftlb is actually converting 108,350ftlb of torque every second. An engine producing 130hp and 197ftlb is converting only 71,500ftlb of torque every second. When people say that Hondas don't have any torque, they should probably think for a minute...


Majin SSJ Eric
Incidently, "Pferdestarke" (PS) is not the only name for a metric hp as the French "cheval-vapeur" (CV) is also widely accepted. 👍

Now that's interesting information at least. However, since the Japanese use PS and all European car manufacturers, including PSA and Renault, quote power outputs exclusively in PS in their literature and websites, I can't imagine that CV is all that commonly used.
 
Famine
Now that's interesting information at least. However, since the Japanese use PS and all European car manufacturers, including PSA and Renault, quote power outputs exclusively in PS in their literature and websites, I can't imagine that CV is all that commonly used.


Renault use CV for all internal communication, but use PS for external communication (as Famine pointed out), except for France when they use CV. However the UK quoted figure are all listed as HP, but this is Metric HP, which is PS.

The other advantage of using PS for public use rather than Imperial HP is that the figures hold slightly different values.

1 HP = 1.01 PS

or

1 PS = 0.99 HP

Useful conversion tool
http://locost7.info/converter.php

The figures above are rounded with the exact value being 1 HP = 1.01387 PS

As PS is a slightly higher value the 'Marketing' people like it as it makes the car appear slightly more powerful than it is.

For example the Renaultsport 182 is in fact 182 PS or CV (as it is shown on the French website) is in fact approx 179.5 HP.

The Renault UK website shows the car as having 182 HP, but this is Metric Horsepower or PS/CV.

Confused, you may well be.

BTW someone at the start of the tread quoted HP as being a SAE rating, it is in fact both an ISO and SAE rating. While they are now both the same, prior to the early '70s the SAE rating was the testbed power of the engine mesured without ancillary units such as Air Con or Power steering load accounted for. The ISO rating was with these unit accounted for. This resulted in an SAE rated engine carrying a higher HP than ISO would rate the same engine.

Both ISO and SAE now use the engine on a test bed with ancillary component load accounted for, allowing direct comparisions between the figures.

Hope this lot helps
 
GameBoyFX
As the wheels light on fire as your burning out :lol:
:lol: If we can hybrid this game then we WILL have those drifting and doing burnouts. Mabey even a few of them doing weelies. :lol:
 
In Spain we only use "CV" for power, no HP or PS. As in French, it is short for "Caballo de Vapor" (which can be *literally* translated into English as "steam horse" :D:D)
 
SHIRAKAWA Akira
I think we should stick with SI (International System) units and use kW (kilowatts) instead.

Why?

As quite a few countries around the globe (for example the USA and UK) do not use the SI system for quoting power output, but use HP/CV/PS.

While slight differences exist between imperial and metric HP figures, they are close enough to be compaired.

SI units (i.e. kW) mean nothing to me.

In an ideal world PD would give us the option of switching between the two so that we can use the standard for our part of the world. Just as we should be able to do with MPH and KMH.
 
Famine
1 horsepower = amount of power required to lift 550lbs through 1 vertical foot in 1 second.

Do you think that two hamsters possess the power to lift 220lb (100kg) up 12 inches in one second?
Actually, our sience teacher told us that one horsepower = the amount of a power a horse got.
A human can produce up to 3 hp. A horse can produce 22. He's way off... :yuck:


Oh, and does someone have specs on that long assed car of Leno's ?
 
0.4 HP @ 400 RPM = about 5 ft/lbs of torque at 400RPM.

I wonder if you'd be able to replace the compounds of the tires. you know, switch from oak to pine or something :)
 
Rocco
So...if the hamster gets in its wheel, does that increase its horse....I mean hamster power? :boggled:

now i'm curious. How many hamster do I need in order to reproduce 1 horse power ?

**EDIT**

One horsepower provides the ability to do 550 ft-lbs of work every second. 550 ft-lbs of work is any product of force (in pounds) and distance (in feet) equaling that number.

Applying 55 lbs of force through a distance of 10 feet, for example, represents the same amount of work as 11 lbs. of force applied through 50 feet. The force can be used to lift objects against the pull of gravity, drag them along the ground against frictional forces, accelerate objects, etc.

A 100 HP motor would let you do 550 X 100 or 55,000 ft-lbs. of work each second. It could, for example, lift 550 lbs. 100 feet in one second. To lift more weight at the same rate, or the same weight more quickly, you would need more horsepower.

BHP :
Brake horse power, the net effective power of a prime mover, as a steam engine, water wheel, etc., in horse powers, as shown by a friction brake.

FB :
Friction brake (Mach.), a form of dynamometer for measuring the power a motor exerts. A clamp around the revolving shaft or fly wheel of the motor resists the motion by its friction, the work thus absorbed being ascertained by observing the force required to keep the clamp from revolving with the shaft; a Prony brake
 
Scaff
Why?

As quite a few countries around the globe (for example the USA and UK) do not use the SI system for quoting power output, but use HP/CV/PS.

While slight differences exist between imperial and metric HP figures, they are close enough to be compaired.

SI units (i.e. kW) mean nothing to me.

In an ideal world PD would give us the option of switching between the two so that we can use the standard for our part of the world. Just as we should be able to do with MPH and KMH.
in an ideal world....
of course.

all your talk about hp, PS and CV is talk about the pretty same thing.
Horse Power, Pferdestärke and Cheval Vapeur do all mean horsepower in their languages.
the fact that the "imperials" and also their spin-off, US use those crude values is a historical one.
Continental europe decided to use the metric system, so what?
and thanks for the comparison between hp and PS,
as you can see it´s pretty close together,
The other advantage of using PS for public use rather than Imperial HP is that the figures hold slightly different values.

1 HP = 1.01 PS

or

1 PS = 0.99 HP

shows at least to me that even if the measure systems are different those definitions were created to compare those values.

and Scaff,
your short remark on SI units can be returned:
imperial units say nothing to me.

lastly, to close the circle:
in an ideal videogame the developers would give me the freedom to choose the driver´s position (left or right, original place in one seaters), would provide the option to choose the unit system you like to and of course, would provide a real in car view with corresponding armatures board.

but we will only get GT 4.;)
 
0.4 BHP = around 220 lbs per feet per 1 sec

so in order to calculate how many hamster power it require to reproduce the same amount would be something like this :

1 hamster should be able to reproduce 1/2 lbs per feet per 1 sec
so around 440 hamsters would be require to reproduce to same amount

0.4 BHP = 440 Hamster power... :yuck:
 
Symtex
now i'm curious. How many hamster do I need in order to reproduce 1 horse power ?

**EDIT**

One horsepower provides the ability to do 550 ft-lbs of work every second. 550 ft-lbs of work is any product of force (in pounds) and distance (in feet) equaling that number.

Applying 55 lbs of force through a distance of 10 feet, for example, represents the same amount of work as 11 lbs. of force applied through 50 feet. The force can be used to lift objects against the pull of gravity, drag them along the ground against frictional forces, accelerate objects, etc.

A 100 HP motor would let you do 550 X 100 or 55,000 ft-lbs. of work each second. It could, for example, lift 550 lbs. 100 feet in one second. To lift more weight at the same rate, or the same weight more quickly, you would need more horsepower.

BHP :
Brake horse power, the net effective power of a prime mover, as a steam engine, water wheel, etc., in horse powers, as shown by a friction brake.

FB :
Friction brake (Mach.), a form of dynamometer for measuring the power a motor exerts. A clamp around the revolving shaft or fly wheel of the motor resists the motion by its friction, the work thus absorbed being ascertained by observing the force required to keep the clamp from revolving with the shaft; a Prony brake

yes and no to your more hp theory, yes in terms of a rotational object and no if your just pulling like a horse would...why?

because there would be no HP with out torque, or should i say work? but work and torque will always exist, HP is a way of saying how efficiently are you using that torque for a better lack of explanation...

but in the end Torque is what MOVES your car while HP is used to sustane a certain speed (speed is also efficiency in a way).

they both go hand in hand, but you wanted to move that object "faster" you would need more torque at that same rpm or same pulling distance which in turn increases HP but to say it correctly you would say you need more torque :) :P
 
Flinx
your short remark on SI units can be returned:
imperial units say nothing to me.

Indeed - but his sentiment is still relevant. And echoed by you below:

Flinx
in an ideal videogame the developers would give me the freedom to choose the driver´s position (left or right, original place in one seaters), would provide the option to choose the unit system you like to and of course, would provide a real in car view with corresponding armatures board.

but we will only get GT 4.;)

Oddly, most race cars are left-hand drive only. The McLaren F1, whilst being a central seat, is also, I''m informed, left-hand drive - that is to say that the gearbox is to the right of the driver.

But yes - the ability to choose between measurements is in all honesty a must-have. And not just "All-metric" and "All-imperial". We Brits are, frankly, a little strange. We like miles per hour, foot-pounds of torque, horsepower engines and... kilogram kerb weights... :D. We shouldn't have to be saddled with European metric units (even though most of ALL units are "regulated" by a little place in Paris) because we happen to be tacked onto the place. Similarly, Canada shouldn't have to be stuck with them thar' Amurrican's lbs and miles, when they like a whole SI deal.

And lastly, the Prius. Litres per kilometre, miles per gallon or miles per US gallon? :D
 
Symtex
1 hamster should be able to reproduce 1/2 lbs per feet per 1 sec
so around 440 hamsters would be require to reproduce to same amount

0.4 BHP = 440 Hamster power... :yuck:
:lol: :lol: :lol: :lol: :lol: :lol:
in an ideal world we'd be able to pick hamster power, stun our mates with massive figures, afterall it's still show up as HP ----- mmmmmmmm HP sauce on a bacon sandwich :sly:
 
Jay Leno's tank car
The story starts in Leno's garage in Burbank, California. He's a fellow with a taste for gonzo vehicles and a job that lets him eat big. Perhaps you've heard about the motorcycle with the helicopter turbine engine? How about the Rolls-Royce Phantom stuffed with a 27-liter Merlin V-12 from a World War II Spitfire?

Not long ago, while inspecting these and other oddballs in the three-building collection where the motto is "More money than brains," we were introduced to the "Tankrod." It's a 21-foot aluminum-bodied roadster on shaved Goodyear garbage-truck tires with two cozy seats situated behind what appears to be a small oil refinery. It looked dangerous and expensive, mayhem with headlights. At once we knew we had to tell you about it. To do that we had to drive it. To do that we had to develop a story pitch.



A few inquiries revealed that the car is not the work of Jesse James, Boyd Coddington, or even ExxonMobil, but one Randy Grubb, a glass artist from Grants Pass, Oregon. Grubb announced to his wife one day in 2001 that he was taking exactly one year off from making $10,000 antique-style French paperweights to realize a vision that was forming in his head around a 2000-pound Continental AV-1790-5B.

That's an engine, specifically, an aluminum air-cooled 1792-cubic-inch V-12 making 810 horsepower and 1590 pound-feet of torque. Doesn't ring any bells? Uncle Sam ordered up thousands of this mother of all motors for the 51-ton M-47 Patton tank, the nation's first line of defense against communists, aliens, the Blob, anything that threatened America in the '50s. Powered by gasoline at first, the engines were quickly converted to diesel when gasoline proved touchy in the presence of exploding munitions.

Inspired by a pal's hot rod and its 1000-cubic-inch firetruck engine, Grubb located a stash of gasoline AV-1790s on the Oregon coast. He christened the project the "Blastolene Special"—the made-up word just sounded cool—while cobbling it together in his garage using junkyard truck parts and a Greyhound-bus transmission. Grubb says, "I knew from the start I would eventually sell the car to Jay Leno. Luckily, I have enough of Jay's money to build another car and continue not making glass." Grubb figures he made $25 per hour for 5000 hours of work. You do the math. His wife certainly did.

Thus, we have a tank-powered car conceived by a glass artist and owned by a celebrity with a world-famous chin. This had the makings of a high concept at least as good as Gigli. All we needed for a solid draw was some gunplay and explosions. That's when we called the Army.

Capt. Danilo Gannod answered the phone in the public-affairs office at the U.S. Army's National Training Center at Fort Irwin near Barstow, California. Gannod was the first to hear the story pitch involving a major star, a tank-powered car, a tank-powered M1A1, and a dramatic race between the two. He chuckled, then asked, "Really?"

Fort Irwin is the Top Gun school for tanks. During 28-day rotations, visiting American armored units fight mock battles against a resident unit of experts on a 768,000-acre playing field watched over and managed by a giant supercomputer. The motto at Fort Irwin is "Death before dismount." Temperatures can cook as high as 130 and plunge below freezing at night. The swirling dust cakes on the tongue and dries up spit. Occasionally, huge migrations of tarantulas turn the desert floor into a quivering gray carpet. If the visiting soldiers are lucky, they die quickly in a hail of simulated depleted uranium.
How much is 1590 pound-feet of torque in Nm ?
 
Ebiggs
Yet 1 horsepower is equal to the power a horse has. :crazy:

Nope. 1 horsepower is equal to the amount of work a horse can do averaged over a day. So yes a horse can exceed 1 hp for a short period but can't keep it up forever. Whereas an engine, in theory, if fed enough petrol and if it has no mechanical failures can.
 
From everything I have read, I think I have a much better idea why the GT4 has been delayed so much, and that all those online/non-online, translation and polishing hoax was just a paravan for the main reason...

Converting. :)

And, oh yeah, Q: how much HP does a man have?
 
A maximum of about 12 (that's an Olympic weightlifter doing a 213kg/500lb Snatch in a half-second through an elevation of 2 metres/6 foot 8 inches).
 
Back