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increase engine power

Started by Vini, July 31, 2016, 08:12:36 PM

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Vini

hi

i just want to keep the same torque curve but i want to scale it up a bit.
is changing the max_power value in the bike.ini enough or does that only change the bike info?
also i noticed the rgv750 has "230 hp" in the ini, yet gp bikes shows it as "230 kW" in the bike info window.


Vini

that's it? cool.

but does the value have to be in hp or kW?

matty0l215

Are you referring to the GP750?

What the .ini says doesn't actually affect how the bike rides, it's all in the .enge
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Vini

yes i am.
it's hp in the ini but kW in GP Bikes.

ok, so how can i scale up the engine curve?

matty0l215

Quote from: vin97 on July 31, 2016, 08:38:47 PM
yes i am.
it's hp in the ini but kW in GP Bikes.

ok, so how can i scale up the engine curve?

Using engned

There is a scale tool in there (set to 1 by default)

Can i ask what you are doing with the bike.
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Vini

doing some experiments with manu's moto2 chassis.

of course i would ask before "releasing"/showing anything.

matty0l215

Quote from: vin97 on July 31, 2016, 09:12:19 PM
doing some experiments with manu's moto2 chassis.

of course i would ask before "releasing"/showing anything.

Feel free to experiment :)
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Vini

July 31, 2016, 09:33:53 PM #8 Last Edit: July 31, 2016, 09:36:01 PM by vin97
cool, thanks.


so, it's the "Scaled Throttle" parameter?

matty0l215

Quote from: vin97 on July 31, 2016, 09:33:53 PM
cool, thanks.


so, it's the "Scaled Throttle" parameter?

I believe so. Try it, nothing to lose. Just keep a backup of the original.
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Vini

ok, will do.

one more thing: is it power at the crank, clutch, output shaft or rear wheel?

matty0l215

Quote from: vin97 on July 31, 2016, 09:36:13 PM
ok, will do.

one more thing: is it power at the crank, clutch, output shaft or rear wheel?

Pass :P

I believe crank. But without proper documentation, only Piboso will be able to tell us.
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Vini

July 31, 2016, 09:55:04 PM #12 Last Edit: July 31, 2016, 11:28:59 PM by vin97
hmm, ok.

ah now that i think a bit more about it, is it maybe also possible to scale the curve along the rpm-axis?
i want to make the max power rpm fit approximately a hypothetical v5 750cc version of the aprilia rsa 125 engine, which would be around 12.2k.

edit: the "scaled throttle" only scales throttle input not engine power, so not what i'm looking for.
i noticed that the varese's max power rpm is already at 12.1k which would be close enough so maybe i'll that engine file.

matty0l215

ohh

Sorry, but i don't know of a way to do this

You might be able to do it in the .engn file using notepad and increasing the number values by a certain percentage. That should active the same outcome but it's a lot of work. Just make sure to only edit the vertical value and not the horizontal value as that would ruin the file.

I'll have a go tomorrow if you'd like. I'm interested to see if this can work.

Matty :D
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Vini

July 31, 2016, 10:30:59 PM #14 Last Edit: July 31, 2016, 10:33:15 PM by vin97
Quote from: matty0l215 on July 31, 2016, 10:12:10 PMI'll have a go tomorrow if you'd like. I'm interested to see if this can work.
cool. it actually looks really promising. i'm using the motogp carbon brakes for the experiment.

it could be a realistic bike, too. if suter fits a 580cc v4 into a moto2 bike than a 750cc v5 should fit into the kalex chassis because there are no width limitations for the bottom cylinder row.
the 137kg of manu's kalex would also be a realistic weight for the bike. a slight change would be that a 2-stroke v5 is more compact (top cylinders could sit below the seat in between the frame), so you would have to move the CoG a bit up and back. ...haven't messed with that yet, though.

on manu's bike, the only part you see of the engine is the clutch, so in order to have the matching visuals you just have to remove the bottom of the seat and put 5 exhaust pipes on the bike (and possibly remove the clutch cover).

i was thinking of 300hp at the crank (rsa125 did 55) :D