I am sorry for saying it was dumb. I really am. Sometimes I get too use to Honda-Tech & that type of discussion.
Anaema That's correct, but not really what we're talking about. This is more in line with what you're talking about.
Why do big diesel engines and race car engines have such different horsepower ratings?
How Force, Power, Torque and Energy Work: What is Torque?
AFA what me and Maxpower & whoever else are talking about on the dyno:
How do you convert engine torque to horsepower?
How Horsepower Works
The dyno itself has incorrect conversion factors.
NM is standard, as well as lb-ft. By that I mean there is no confusing the math to convert one to another. Unlike horsepower - where there may be a dozen different "horsepower" measurements used over the years. There are no ways to confuse one person/countries/system's NM of force, or another's Lb-ft. There is only one.
NM to Lb-ft Calculators & conversion factors.
http://www.boltscience.com/pages/convert.htm
http://www.iis-servo.com/conversions.asp
http://www.usda.gov/rus/electric/pubs/1724e216/appendix_d.htm
1438nm does not compute to 1566 lb-ft. 1438nm = 1060.613 lb-ft
Yet again proving that Dyno is poor. Not only can it not read & compute the correct function of torque in the first place - it's torque conversion to SAE doesn't even work correctly!!!
You're wondering what happened? I can tell you exactly what happened. The thing is dumb. It took the incorrect 1438nm reading , and instead of correctly converting it from NM to LB-ft, it used the OPPOSITE formula. It converted lb-ft to nm. 1438lb-ft = 1949nm.
Guess what... I'm right AGAIN!!! Go look at your written figures on the dyno.
631NM = 465lb-ft. Look at your peak torque on the curve.
It's @ approximately 3917rpm.
It's making approx 300whp @ 3917rpm
As stated Torque= (5252 x HP)/RPM
(5252 * 300)/3917 =
402 lb-ft peak via the real math.
Obviously, it's hard to interpolate the RPM & horsepower on the curve explaining the 63 lb-ft difference, But yet again my numbers are believable, the numbers on the dyno, and the numbers you two are quoting are impossible.
The dyno is dumb & incorrect, yet again proven by basic math.
MaxPower you (at length), and ozvenom just went on and on about gear ratio's, torque convertors and what not, and you've YET to realize they have 0 bearing on what we're talking about. Because you couldn't defend against what I've said, you COMPLETELY changed the subject to something else.
Gearing, torque convertors etc. has NO bearing on going from 400lb-ft actual meausurements to 1400lb-ft measurements.
If gearing changes & gearing correction has not been entered, guess what... IT STILL DOESN'T MATTER. As I said previously... If the actual 1920NM dyno was correct, it wouldn't read around 300whp making 1920NM, it would make:
And another point that I am right about... Dyno's calculate horsepower, and find torque from that.
http://www.bristoldyno.com/info/whatis.htm
Like I said... Sorry for being an ass, and I REALLY don't want this detract from the car - I really wanna see the car. It sounds leet, sweet & ready to eat & msot of us wanna see it.
Anaema That's correct, but not really what we're talking about. This is more in line with what you're talking about.
Why do big diesel engines and race car engines have such different horsepower ratings?
How Force, Power, Torque and Energy Work: What is Torque?
AFA what me and Maxpower & whoever else are talking about on the dyno:
How do you convert engine torque to horsepower?
How Horsepower Works
The dyno itself has incorrect conversion factors.
NM is standard, as well as lb-ft. By that I mean there is no confusing the math to convert one to another. Unlike horsepower - where there may be a dozen different "horsepower" measurements used over the years. There are no ways to confuse one person/countries/system's NM of force, or another's Lb-ft. There is only one.
NM to Lb-ft Calculators & conversion factors.
http://www.boltscience.com/pages/convert.htm
http://www.iis-servo.com/conversions.asp
http://www.usda.gov/rus/electric/pubs/1724e216/appendix_d.htm
1438nm does not compute to 1566 lb-ft. 1438nm = 1060.613 lb-ft
Yet again proving that Dyno is poor. Not only can it not read & compute the correct function of torque in the first place - it's torque conversion to SAE doesn't even work correctly!!!
You're wondering what happened? I can tell you exactly what happened. The thing is dumb. It took the incorrect 1438nm reading , and instead of correctly converting it from NM to LB-ft, it used the OPPOSITE formula. It converted lb-ft to nm. 1438lb-ft = 1949nm.
Guess what... I'm right AGAIN!!! Go look at your written figures on the dyno.
631NM = 465lb-ft. Look at your peak torque on the curve.
It's @ approximately 3917rpm.
It's making approx 300whp @ 3917rpm
As stated Torque= (5252 x HP)/RPM
(5252 * 300)/3917 =
402 lb-ft peak via the real math.
Obviously, it's hard to interpolate the RPM & horsepower on the curve explaining the 63 lb-ft difference, But yet again my numbers are believable, the numbers on the dyno, and the numbers you two are quoting are impossible.
The dyno is dumb & incorrect, yet again proven by basic math.
MaxPower you (at length), and ozvenom just went on and on about gear ratio's, torque convertors and what not, and you've YET to realize they have 0 bearing on what we're talking about. Because you couldn't defend against what I've said, you COMPLETELY changed the subject to something else.
Gearing, torque convertors etc. has NO bearing on going from 400lb-ft actual meausurements to 1400lb-ft measurements.
If gearing changes & gearing correction has not been entered, guess what... IT STILL DOESN'T MATTER. As I said previously... If the actual 1920NM dyno was correct, it wouldn't read around 300whp making 1920NM, it would make:
Not 322whp.Horsepower = rpm x torque / 5252
(1438/5252)*4050
0.273 * 4050 = 1105.65 wheel horsepower.
And another point that I am right about... Dyno's calculate horsepower, and find torque from that.
like I said. The reason why dyno's read horsepower, is because you're taking measurements over both time & distance. You're not taking a static measurement like pushing on a lever.Horsepower is torque applied over both time & distance
http://www.bristoldyno.com/info/whatis.htm
Many of you are familiar with the hp = rpm x torque / 5252 formula. In many situations, that formula is the way horsepower is calculated. In the case of the Dynojet dynamometer, it is not. The Dynojet calculates horsepower even if there is no torque reading, and it does this in the manner that I am in the process of describing. Those of you that have had your vehicles tested at my shop and have watched the computer screen closely have seen that the computer plots out only the horsepower after each run, and I have to click the mouse a few times to get your torque. It does this because sometimes there is no torque reading, or the torque reading is faulty. This can happen because inductive and optical rpm pickups may not be perfect, and/or your ignition system may make things go a little haywire. If the rpm readings are not perfect, and the computer used the rpm x torque / 5252 formula, the hp reading would be inaccurate.
Like I said... Sorry for being an ass, and I REALLY don't want this detract from the car - I really wanna see the car. It sounds leet, sweet & ready to eat & msot of us wanna see it.