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At the very least, you should let us know what wheel you have 
With the exception of a few more modern superchargers, what you trade in lag you get back as parasitic power losses. Typically speaking, superchargers cannot provided as much boost either, a max of maybe 9 PSI.
VW is going the route of the "twincharger" in which it's both supercharged and turbocharged. The supercharger for low RPM, the turbo for high RPM. Seems like a good idea, best of both worlds.
As for keeping traction, what kind of power were you getting in those cars? My peak torque is roughly 300 lb/ft which comes on HARD at 3100 RPM. Talking about going from about 160 lb/ft at 2000 RPM to that as boost peaks.
Now, that's 3rd+ gear numbers, so they're not totally relevant. Figure maybe 230 peak lb/ft in first.
Anyway... the point. Despite being AWD (50/50 split) it's quite possible to spin the tires in 1st on dry, and wet? Oh man... YES you have to go out of your way to do it in the dry, but NOT in the wet. That sudden surge as boost peaks is tricky, and if you're too heavy on the throttle, watch out. It's still quite possible to control it, but it's so easy to spin the tires it's ridiculous. And if I had the full boost in 1st? Yikes.
* Disclaimer
Let me clarify that my numbers are educated guesstimates based on a dyno run performed by TDC on a car other then my own, however, with the exact same tune. The "to the flywheel" numbers are also educated guesses based on drivetrain losses, as the TDC numbers are actually to the wheels (peak torque of 261 lb/ft) on their dyno which is known to be one of the lowest reading AWD dynos. Also, the run was performed on a 90 degree day, so figure considerably more power on these 40 degree days (less intercooler heatsoak).
VW is going the route of the "twincharger" in which it's both supercharged and turbocharged. The supercharger for low RPM, the turbo for high RPM. Seems like a good idea, best of both worlds.
As for keeping traction, what kind of power were you getting in those cars? My peak torque is roughly 300 lb/ft which comes on HARD at 3100 RPM. Talking about going from about 160 lb/ft at 2000 RPM to that as boost peaks.
Now, that's 3rd+ gear numbers, so they're not totally relevant. Figure maybe 230 peak lb/ft in first.
Anyway... the point. Despite being AWD (50/50 split) it's quite possible to spin the tires in 1st on dry, and wet? Oh man... YES you have to go out of your way to do it in the dry, but NOT in the wet. That sudden surge as boost peaks is tricky, and if you're too heavy on the throttle, watch out. It's still quite possible to control it, but it's so easy to spin the tires it's ridiculous. And if I had the full boost in 1st? Yikes.
* Disclaimer
Let me clarify that my numbers are educated guesstimates based on a dyno run performed by TDC on a car other then my own, however, with the exact same tune. The "to the flywheel" numbers are also educated guesses based on drivetrain losses, as the TDC numbers are actually to the wheels (peak torque of 261 lb/ft) on their dyno which is known to be one of the lowest reading AWD dynos. Also, the run was performed on a 90 degree day, so figure considerably more power on these 40 degree days (less intercooler heatsoak).
Last edited by TravisS, .
Which is basically what's already been said a couple times in this thread
I'm still new to turbos myself, but AFAIK boost is managed by the wastegate. Basically, the wastegate opens partially and some of the exhaust gasses are routed out through it, rather then into the exhaust turbine, and thus limiting boost.
Modern engines are able to modulate the wastegate opening based on what the ECU says allowing for different boost per gear, with a physical spring to fall back on in case of failure (in the case of the Legacy, it's a 9 lb spring, meaning anything over 9lb of boost will open the wastegate).
I think I worded that badly.
I am S2 licensed, have been since the alpha first came out
I am S2 licensed, have been since the alpha first came out
I know that, I'm not S2 licensed for nothing
Doesn't change the fact that the XR GT Turbo, FX0, and RB4 are modeled after "street" cars.
Yes you can change a lot of items on the fly that would be difficult if not impossible on a real car, but that doesn't change what type of car they're "supposed" to be.
Doesn't change the fact that the XR GT Turbo, FX0, and RB4 are modeled after "street" cars.
Yes you can change a lot of items on the fly that would be difficult if not impossible on a real car, but that doesn't change what type of car they're "supposed" to be.
When did LFS become about race cars?
Last I checked, most of the cars are supposed to be just your normal street car, like you'd have for an auto-x type event.
Well, if so, guess what? Some real production cars limit boost in the first gears! I know this was already mentioned, a couple times, and it's still true.
For a FWD vehicle it may be for limiting wheelspin. In an AWD vehicle it's to keep things from breaking. Do you have any idea just how much torque is being transmitted to the ground from a vehicle with 300 tq at the crank in 1st gear? A LOT! The lower gears are multipliers. Figure damn near 1000 lb/ft to the wheels.
How to prevent snapping axles? Well, either you can put a really low neutral rev limiter like the Lancer Evo has, or you can limit low gear torque by reducing boost.
In my car (Stage 1 '05 Legacy GT) 1st gear boost is limited to something like 9 PSI, 2nd gear is 13, then 3rd+ is 17 PSI. Those aren't necessarily the real numbers but close.
Anyway... I voted yes for it
Last I checked, most of the cars are supposed to be just your normal street car, like you'd have for an auto-x type event.
Well, if so, guess what? Some real production cars limit boost in the first gears! I know this was already mentioned, a couple times, and it's still true.
For a FWD vehicle it may be for limiting wheelspin. In an AWD vehicle it's to keep things from breaking. Do you have any idea just how much torque is being transmitted to the ground from a vehicle with 300 tq at the crank in 1st gear? A LOT! The lower gears are multipliers. Figure damn near 1000 lb/ft to the wheels.
How to prevent snapping axles? Well, either you can put a really low neutral rev limiter like the Lancer Evo has, or you can limit low gear torque by reducing boost.
In my car (Stage 1 '05 Legacy GT) 1st gear boost is limited to something like 9 PSI, 2nd gear is 13, then 3rd+ is 17 PSI. Those aren't necessarily the real numbers but close.
Anyway... I voted yes for it
To sound like a broken record, thanks for the update Scawen!
I really only hang around these forums waiting for an update. Though I haven't played S2 in many many months, I'm always very interested in updates and the project itself. Looking forward to what whatever's coming.
I really only hang around these forums waiting for an update. Though I haven't played S2 in many many months, I'm always very interested in updates and the project itself. Looking forward to what whatever's coming.
It doesn't matter what you can get the FPS up to, you can't draw more frames then your monitors refresh rate.
So even if you're getting 1000 FPS, if your monitor is refreshing at 60 Hz you're only drawing 60 FPS.
So even if you're getting 1000 FPS, if your monitor is refreshing at 60 Hz you're only drawing 60 FPS.
That's not how it works out in real life though.
No roof = lots of reinforcement. Without frame reinforcement you'll end up with a wet noodle for a chassis, which of course is bad. So most convertables weight quite a bit more because of the extra reinforcement.
Yeah, no kidding. I can only imagine with the driver of the NSX would have done in one of those Lambos!
Ah, yeah. Without lots of fancy pixel shaders, there's not much else to worry about other then raw MHz
Ultimately in LFS the AMD PR rating vs P4 GHz doesn't quite match.
In "real world" apps a 2.5 GHz P4 would destroy an Athlon XP 1800+
In LFS, with the Athlon's much better floating point power (which makes me wonder... does LFS take advantage of SSE2? I'd think that would give huge gains to P4 performance) simply walks all over the P4.
The Athlon XP 1800+ uses a FSB of 266 MHz (DDR), or PC2100 RAM. That means that both your bus and the Athlon bus are running at the same speed (133 MHz) but yours is "quad pumped" to make 533 MHz while the Athlon is still only double data rate, or again, 266 MHz.
BTW, the slowest DDR is actually PC1600, which runs at 100 MHz (200 MHz DDR), which both the original Athlon and the first DDR based P4 used.
Ebiggs, honestly your CPU is still your biggest problem. I'd consider the 1700+ a real minimum, and that runs at 1.46 GHz. Not to mention it's an XP, which is then again some better then the clasic Athlons.
No no, LFS is all about the "power". I know you know that a 2 GHz Athlon 64 will absolutely destroy a 3 GHz Celeron in LFS.
No doubt! Unless, of course, you like wasting money
Just remember... sometimes faster isn't better.
For example, though it may seem odd a tras of 11 (what you currently have set to 5) is actually the best for an nForce 2 based system.
Anyway, I'm not surprised by this. Since LFS is so CPU hungry, and of course data hungry and what not. And I'm definately not surprised that you saw a big boost going from 2T to 1T. That change alone is huge.
For example, though it may seem odd a tras of 11 (what you currently have set to 5) is actually the best for an nForce 2 based system.
Anyway, I'm not surprised by this. Since LFS is so CPU hungry, and of course data hungry and what not. And I'm definately not surprised that you saw a big boost going from 2T to 1T. That change alone is huge.
Wow, that's a HUGE difference for torque
250 Nm (@5780 RPM) for the real thing, 360 Nm (@3500 RPM) in LFS
That more then explains the time difference
According to the Raceabout website the 1/4 mile is actually closer to 14 seconds... so you've gone about 1.5 seconds faster then the real thing!
Makes me wonder. Is that 14s time way off, or is LFS way off?
http://www.raceabout.fi/car_techdata.php
Makes me wonder. Is that 14s time way off, or is LFS way off?
http://www.raceabout.fi/car_techdata.php
My monkey enjoyed pooing on Scawen after driving around in the MRT5 for a while. Always an odd sight, a giant monkey in that little car
Hmmm... "younger"
When I was a member of Memphis Bleek, I was one of the youngest. I believe that only Reed was younger then me.
I'm 23 now, was, I dunno... 21 or 22 then? Reed I think was 19.
But many others on the team were in their 30s, 40s, even 50s.
I can see the demo attracting younger players, especially now with damage, smoke, skid marks, etc...
Before all that there's wasn't much "just screwing around" type stuff to do. Not to say you couldn't, there was just less to do.
Damage I think will bring the yougest croud. Seriously, who doesn't want to smash stuff up?
But in the paid version I can only imagine the average age getting quite a bit older. At least old enough to the point where you are paying for LFS out of your own pocket.
When I was a member of Memphis Bleek, I was one of the youngest. I believe that only Reed was younger then me.
I'm 23 now, was, I dunno... 21 or 22 then? Reed I think was 19.
But many others on the team were in their 30s, 40s, even 50s.
I can see the demo attracting younger players, especially now with damage, smoke, skid marks, etc...
Before all that there's wasn't much "just screwing around" type stuff to do. Not to say you couldn't, there was just less to do.
Damage I think will bring the yougest croud. Seriously, who doesn't want to smash stuff up?
But in the paid version I can only imagine the average age getting quite a bit older. At least old enough to the point where you are paying for LFS out of your own pocket.
Yeah, I'm pacific coast (washington state) and though I haven't really played a lot recently, I've always found the best time is from about 12 AM - 12 PM (PST).
This, of course, means 8 AM - 8 PM GMT. Generally anything earlier or later then that are pretty crap for finding lots of people
This, of course, means 8 AM - 8 PM GMT. Generally anything earlier or later then that are pretty crap for finding lots of people
Why not S2?
Damage is being implemented for S2, and when was the last time you saw Scawen half ass anything in this sim?
I'd be at least a little shocked, to say the least, if the damage system isn't a little better by the time of S2 final.
Is the moose avoidance test ISO 3888?
Little google search seems to say so.
If so, note that a layout file was attached to the original post. You should be able to use that to gather data
Once (and if) LFS Tweak comes out for S2, then yes, you can.
OR, maybe the reset could simply take you to the pits, rather then straight back onto the track?
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