Dyno Chart Broken, Game Completely Flawed

[Qmark]

So dyno chatrts always cross at 5252. Horsepower Is a conversion, not a metric.

Here's some qoutes from a hotrod article. http://www.hotrod.com/how-to/engine/horsepower-vs-torque/

"Because torque and rpm are divided by 5252, torque and horsepower are always equal at 5252 rpm."

"If you plot torque and horsepower curves on a graph, the lines will always cross at 5250 rpm (rounded off). If they don't, the curve is undoubtedly bogus."

I was tring to make the Honda S2000 motor. 2.2 liter, 8000 rpm, 240 hp motor and this game comes no where close. Not only that, it didnt even cross at 5252 like it should. Its IMPOSSIBLE for this motor to run this way.

http://steamcommunity.com/sharedfiles/filedetails/?id=451528766
s2000 ap2 motor build

[UltimateBMWfan]

Mmm.

[Pyrlix]

Oh gosh... I don't know if this is troll of for real.
Anyways:

It is calculation - very easy actually.

P = 2 x PI x M x n

I use the common variables for Power in W, Torque in Nm and rotational speed in 1/s.
You say torque and power are always equal at 5252RPM... lets see. Lets assume we have 140Nm at 5252 RPM.

P = 2x 3.14 x 140 x (5252/60) <- i hope you get why 5252/60...
P = 6,28 x 12254
P = 76959,30

So this engine would have 77kW or rougly 105hp. So they are not really equal... and if you convert those 140Nm to this weird ftlb... you get 103ftlb - so not really equal too.

Next try please - and always consider the scaling of dynocharts and what could happen if an engine only revs to 4k!

[Red_Arrow]

Damn wish I'd sat down and done the maths to prove this troll wrong. Incidentally it made me realise how neat my English mish-mash of HP and Nm is

[Qmark]

Well here's the equations and a site that calculates it.
http://www.metaris.com/hp-relations.php

No im not wrong, Your game is Wrong.
T = HP * 5252 / RPM
HP = T * RPM / 5252
RPM = HP * 5252 / T

[Pyrlix]

Sorry, can't take you serious. I still hope you are joking, although it still smells trolly, considering you have 220h of GC.

Again:

P = 2 x PI x M x n

->

P/(2 x PI x n) = M

P is POWER in WATTS (W)
M is TORQUE in NEWTONMETRES (Nm)
n is Revolutions per Second (1/s)
PI is just... Pi?
and 2 is just 2.

Math and physics were not your strength huh?

See above - physically calculated correctly with units and yours has 140 TORQUES - which is a weird unit.

Let me do it again.
M = 140 Nm
n = 5252/60 (5252 rotations per 60 seconds) - still following?
PI = 3.141

P = 2 x PI x M x n

P = 2x 3.14 x 140 x (5252/60)
P = 6,28 x 12254
P = 76959,30 W
P = 76,95kW


Still not the same. 76,95kW is simply not 140Nm! Even the unit is different!
FYI: Use real SI units not some weird imperial stuff which is measured in human arms and feet.

Lets see what my freshly built engine has at 5300RPM... 215Nm and 119kW. Still not the same!

TL,DR: I don't get your problem.

Its only game, why you have to be mad?

[ATCrunch]

Originally posted by Pyrlix:

Sorry, can't take you serious. You don't use proper equations in your forumla. You just used some weird mambo jambo and a physically approved formula. I call your thing there "pulled out the arse".

P = 2 x PI x M x n

->

P/(2 x PI x n) = M

Math and physics were not your strength huh?

See above - physically calculated correctly with units and yours has 140 TORQUES - which is a weird unit.

Let me do it again.
M = 140 Nm
n = 5252/60 (5252 rotations per 60 seconds) - still following?
PI = 3.141

P = 2 x PI x M x n

P = 2x 3.14 x 140 x (5252/60)
P = 6,28 x 12254
P = 76959,30 W
P = 76,95kW


Still not the same. 76,95kW is simply not 140Nm! Even the unit is different!
FYI: Use real SI units not some weird imperial stuff which is measured in human arms and feet.

Lets see what my freshly built engine has at 5300RPM... 215Nm and 119kW. Still not the same!

TL,DR: I don't get your problem.

Why are you so obsessed about the crossing anyways. Its only a game, why you have to be mad?

Dude he already posted the equations that showed your wrong. I dont think any of us know what your talking about :\ Anyway call a dyno shop or a tuner or look at real dyno graphs. I would say hes right.

LONG LIVE MATH.
T = HP * 5252 / RPM
HP = T * RPM / 5252
RPM = HP * 5252 / T

[Pyrlix]

Mh... what unit is T, HP or RPM? You don't define it anywhere. Your equation is right for IMPERIAL SYSTEM not for metric - and OP is using metric.

Are you into math?

[ATCrunch]

I was just about to say that. The screenshot isnt in Hp/Tq so it needs converted.

[TrackpadUser]

QMark, please read the units beside the number on your in-game dyno graphs.

You have Kilowatts for power and Newton-Meters for Torque. Those are the units commonly used in Australia/New-Zealand, where the devs are from.

In the main menu there is an "option" button. Click on that and set the units of power in "hp" and torque in "ft-lbs"

Then, look at how the lines cross each other at 5252 RPM all the time.

[Qmark]

Originally posted by Trackpad.User:

QMark, please read the units beside the number on your in-game dyno graphs.

You have Kilowatts for power and Newton-Meters for Torque. Those are the units commonly used in Australia/New-Zealand, where the devs are from.

In the main menu there is an "option" button. Click on that and set the units of power in "hp" and torque in "ft-lbs"

Then, look at how the lines cross each other at 5252 RPM all the time.

I stand corrected ignorant american post

[WildKarrde]

Originally posted by Qmark:

Originally posted by Trackpad.User:

QMark, please read the units beside the number on your in-game dyno graphs.

You have Kilowatts for power and Newton-Meters for Torque. Those are the units commonly used in Australia/New-Zealand, where the devs are from.

In the main menu there is an "option" button. Click on that and set the units of power in "hp" and torque in "ft-lbs"

Then, look at how the lines cross each other at 5252 RPM all the time.

I stand corrected ignorant american post

It's ok to be wrong, but it's much better to admit it once you realize it. Kudos. :)

[UltimateBMWfan]

Originally posted by ATCrunch:

Dude he already posted the equations that showed your wrong. I dont think any of us know what your talking about :\

I'd like to point out that Pyrlix is one of the closed Beta testers of Automation and does work closely with the Developers too.

[Qmark]

Originally posted by UltimateBMWfan:

Originally posted by ATCrunch:

Dude he already posted the equations that showed your wrong. I dont think any of us know what your talking about :\

I'd like to point out that Pyrlix is one of the closed Beta testers of Automation and does work closely with the Developers too.

well before he edited his post he asked why does it matter if the lines cross at 5252 .... so if he is helping i can see why the game is taking so long.

[UltimateBMWfan]

I don't think you're in any position to question his role in helping game development without knowing what goes on behind the scenes.

[Pyrlix]

I knew why i was avoiding these forums.
So you don't allow me to edit my posts? Interesting.
Point still stands: Why are you so obsessed about crossing lines?
If you would've used your brain before, there would be no such post. IMHO this reads and feels like badmouthing in favour of a competitor. Just my 2 cents - i'm out.