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The engines already have a power curve and shifting gears is already useful.
Small Diesel Engine Power Curve[xl-logic.com]
where can i find the rest of the graphs shown here?
LOL... as soon as I create them.
I'm not so sure anyone else has bothered to make one. ...or at least I couldn't find them. Nor could I find any reference to the base units that Torque is stated in. It's not foot lbs per second so I just took to multiplying Torque by RPS and calling it Storm Horsepower. Seems to make sense and should give me a decent benchmark for the rest of em.
I'm not yet 100% sure the graphs are going to be constants either. They may vary based on the overall engine/gearbox layout. Might see a different power curve with the same engine in a different layout. I haven't got that far in my testing, and each graph takes 30 data points so it takes me a bit to get that setup in my engine testing lab. This just happened to be the layout for one engine I am using on my starter speedboat.
What's pronounced is how rapidly the 1:3 ratio in this case trounces the 1:1 ratio on fuel consumption. I also see a significant dropoff at the 80% throttle mark on the SHP gain in relation to the fuel cost incurred. I would hypothesize that knowing this bit of info, I might be able to increase the maximum range of my craft if willing to run 1:3 gearing at 80% throttle.
Oh... yes, and it's in the same exact directory where you pulled the picture from.
I only finished the small diesel and AC engine with the same powertrain setup. Got about 5 or 6 readings on the big diesel and got tired.
If you like the graphs and this sort of thing you might like the guide I just posted related to my advanced tech starter boat.
EDIT: this is the AC engine
EDIT: used wrong values for 1:3 gearbox
My initial interest was to relate the engines in the game with horsepower. I wanted to gauge the strength of engines in the game to RL engines and associated horsepower.
https://en.wikipedia.org/wiki/Horsepower
The first formula in the wiki is what I'm interested in and the very basic formula for horsepower is:
(Torque * RPM) / 5252
So basically, it's the two variables provided by the Torque Meter in the game (RPS*60 = RPM) divided by a constant. Assuming that Torque is stated in "pound-foots" the divisor is 5252.
The problem I've had is that I have not found any reference for what unit Torque is stated in for this game. However, I know it's not imperial units, everything else is metric. I think I've made a fair assumption that Torque is stated in a base unit that simply lets it be multiplied times RPS without any adjustment to RPM or additional value that it needs to be divided by.
Since I can't say for sure (maybe a dev will chime in) I've taken what I think is the most likely approach and just multiplied RPS x Torque exactly as provided. Since the resulting values don't seem too far fetched, I see it as a valid baseline for testing the engines in the game to compare relative power. It's a horsepower calc because it involves torque and revolutions so I just consider it stormworks horsepower or "Storm Horsepower" for short. SHP
I can't really relate the engine power in the game to real life. But as a benchmark comparitive tool for engines and powertrain designs in the game, I think it's fine.