With the latest X-5s, off-road ability is no longer THAT terrible of an issue (improved 4WD and TC systems). The real limits to the X-5s off-road performance are lack of clearance, tavel, low range and most crucially, unsuitable tires.
X-5 sized all-terrain tires are available these days thanks to cooper tires (for most OEM sizes last time I checked), which has done a good job of minimizing the tire issue. However, clearance and suspension travel issues remain. And those plastic bits sticking off the bumpers of the 4.8i model don't help either.
But seriously, it's still better than a CR-V and RAV4 since it has enough torque to not get bogged in sticky mud even with no low range. It's full time AWD is still much superior to the reactive systems of the current soft-roaders. As long as you remember to swap to all-terrain tires, you shouldn't have too many problems with gravel, sand and some mud.
Oh, here's one A/T tire for the X5 from general tire:
Very true. This happens to so many people, especially the younger ones.
Personally, I got the license because the demo was remarkably good and showed the potential of LFS as a sim. The incorporation of both FWDs and RWDs do a great job of demonstrating the potential of the physics.
In the long run, a good demo does a better job of getting loyal customers and fans than any coercive means.
Why not just toughen up the course a bit more (more/larger bumps and more corners) and add some real 4WDs for some off-road racing then? Oh wait, we need proper rallycars and rally raid (Paris Dakar Rally) style cars first for that to work.
Agreed. As if we don't get enough 4 letter crap almost everywhere these days. And incessantly swearing kids these days could REALLY use some English lessons.
For instance, if you brake just 10 meters earlier for a corner than absolutely necessary, you can save a LOT of brake wear with relatively little loss of lap time. For instance, the AUDI R10s had speed to spare, so to go faster overall it's better to go a bit below its limits. This saves fuel, wear and tear while covering distances more quickly simply because of less pit time. And given that drivers drive such long stints (up to 3 hours in some cases), it's no surprise that some cars end up squirming around or going off inadvertantlly.
The only reason to push cars to the absolute envelope is for situations such as need of superior position or that you're is simply too far behind everyone else. If cars were pushed 100% all of the time, they might not even last the distance. Goes a long way to explaining why many simply don't finish.
Don't worry, mid engined cars are always going to force drivers focus at the limit. It's what you get when a car rotates on the slightest touch of the steering. Good news is that the lack of rotational momentum for a given turn rate also makes it easier and quicker to get it running straight again, if you're paying attention.
In REAL enduros like Lemans, you don't run 100% of 100%. You run 100% of 80% of the cars absolute limit. A small touch of mechanical empathy goes a long way to improving relaibility.
I had no intention of really wanting to put a wing to the RA since it's quite fine as it is (even for kb!). Of course, those who like a small touch of extra stability can wish for one. The truth is , it's mid-engined design has a massive LACK of rotational inertia, that's why it feels more unstable than it really is. It's definitely a bit twitchy, but that's just because it reacts so quickly. It's actually a very balanced car under power, especially on corner exits (downforce cars excluded of course), much better than the FZs that basically lift the front end and plough through. And the RA has just enough power to do very well, not the stupidly overpowered abomination known as the CCX.
The AUDI TT I was talking about was so bad in terms of rear axle lift even a slight crosswind could send you down the mountain. And no, you don't need stupid driving to achieve that. Just a little gust of sidewind at autobahn speeds(on the autobahn of course). If you hate visible spoilers, it's a non issue, since so many cars have retractable spoilers that pop up at preset speeds anyway so it won't affect the vaunted kerbside looks some here treasure more than their lives.
And to win (or do a great lap in the stig's case), you must finish (aka NOT go terribly off). In case you're wondering, the stig had to short shift the car to push it to its handling envelope. More power than usable is simply a terrible idea. You add all that weight and hardware and trouble to achieve massive power that can almost NEVER be used even on the drag strip. All the while ruining handling balance with the extra weight (stronger and heavier drivetrain), using up more petrol to achieve NO significant performance advantage in any realistic situation (road or track). Seriously, THAT much excess power is only good for nothing more than silly burnouts, doughnuts and all kinds of silly tire shredding melarchy. No matter how hard one tries, the laws of physics dictate that a car can never exceed the performance evnvelope of its tires.
Well, as oversteery and unstable as the old porsches were, they really aren't that bad if you understand how they handle and do a couple of minor tweeks (tire pressures, alignment settings, etc). They are rather slow reacting thanks to their massive polar moment of inertia. If you're good at weight shifting you can easily cope with its handling. Good setups go a long way too. And don't try to rotate it more than necessary, it simply doesn't work.
Oh if you want the purest supercar experience, try the McLAren F1. No power steering/brake booster/ABS/TC/SC. Brilliant, smooth power in a package that actually handles it very well.
LFS has the best setup parameter input system of any sim I've seen so far. Just right click on the chosen parameter and type in your chosen number. Can't get easier or more ideal than this.
The shims I'm talking about apply to cars with double wishbones up front.
The camber and caster are adjusted by the number and the positioning of the shim plates. For instance, to increase negative camber with no castor change, simply add more shim plates front and back. To increase positive caster, simply add a shim plae to the rear. The whole idea is to move the positioning of the upper wishbone around.
The basic idea here isn't wrong, just needs some refinements. For instance, the tilt angles should be less extreme so you don't feel as if the world has suddenly tilted around. And how much the head turns left or right should be somewhat correlated with the steering angle as well, since IRL we tend to naturally steer towards where we look at and want to turn to. This allows us to look where we want to look whilst driving.
True and I've been aware of that for a long time, but good point anyway. It shows that aero still very simplistic and by the way the current downforce cars are, it even more obviously laid out.
I believe I've explained this already, but more caster isn't always better. Sure it does have the advantage of improving self centering and helping to plant the front tire more evenly onto the ground. But it also adds steering effort and too much of it could cause result in a twitchy car. IRL, large amounts of castor would require power steering since the the steering effort required over a long race is simply excessive. As the saying goes in racecar engineering circles:
"Yes, your front end geometry plants the tires like crazy, but what for if no-one can drive it for more than 15 minutes without calling it a pig?"
Again, there are cases where less caster is a good thing. For instance, drifters don't need much self centering or feel. In fact, it makes the car a bit more predictable whilst the steering is turned as the tire to road contact angles don't change as drastically. Lower steering effort helps them to turn the steering faster too.
What I'm suggesting here is to restore levels of adjustments that you could achieve,such as with some OEM or aftermarket shim plates. This would allow drivers to make subtle tweaks to caster to suit the application and their driving. And I definitely do not approve of crazy adjustments such a from 5 degrees to 15 degrees (like in the S1 days).
So in the end, it's not simply a manner of just setting caster to max. It just isn't that simple.
You obviously missed my point. My suggestion was to add a subtle wing to the car that one would realistically do to eliminate rear axle lift and add some TINY downforce at high speeds (such as 160+kph) for a touch of stability. And also to show that high speed capability + significant rear end lift (fundamentally bad body aero design) = inevitable disaster. Hence the old AUDI TTs. If the car had practically no lift or minute amounts of downforce, it obviously doesn't need a spoiler.
The Koenisegg CCX is a completely different story though. Well, if the stig (Top Gear's Test Driver) could crash it on the track, then it's definitely ridiculously overpowered for its available rear grip. It's a car so unstable without rear downforce at the absolute limit that elite drivers guys would struggle with it.
Of course, if the real RA has no spoiler, then we shouldn't have one too.
The RA reminds me of the Koenisegg CCX. Always needed more downforce at high speed. Just wish they add just a touch of rear downforce to it at the nex tphysics update, because currently even though it is still drivable (even with kb!), it's definitely too unstable at high speeds to be truely road legal. Remeber the unstable AUDI TTs that crash thanks to a less than well-behaved rear end?
Thing is, adjustability is a great thing for LFS. That goes a long way to eliminating the need to add new cars that belong to the same category.
Well, I did try launching it with seering and pedal setup (albeit a prmitive 2 pedalled one), and yes, if you squeeze the thtotle the right way it could be done. However, the handbrake method is:
1. Amazingly easy;
2. Very effective.
You could replicate almost perfect launches with machine like precision (given default or lower gearing of course). It practically guarantees nice launches. The real trick is to get the handbrake release timing and actuation level right. This is basically human TC.
Reminds me of the old trick us off-roaders use to improve effectiveness of the rear LSD when needed (not very often if the LSD is a good one).
It's a little thing called I don't need to resort to personal insults often, trist.
And the part about Mercs. Seesh, no need to go so wacky! I've got categories of cars that I don't favour too, but at least I give them the benefit of the doubt and see them for what they are, not what one thinks they must be. I don't really like Mercs that much, but they do have their strengths. Need I mention that AUDIs and BMWs use multilinks too? I bet my the great tristan would categorise AUDIs and BMWs as crap in one giant sweep too. I wonder if you're smart enough to know what kind of hornet's nest you're dealing with by insulting lots of AUDI and BMW enthusiasts in one sweep too. When was the last time anyone said multilink reared BMWs handle like crap anyway?
Conclusion: based on tristan's amazing and incomprehensibly brilliant intellect, all cars with multilinks are crappy no quality hacks that handle like crap.
And yes, I do understand stupidity. It's called the guy who can't resist calling all others stupid.
Wow! He's just called me an idiot! Thanks to the great tristan, my knowledge of insults grows at an exponetial rate!
Wow, you've got quite a sense of humour. Good on you! You do have very good points too.
Well, I've not tried to say that anything suggested in this thread is super revolutionary, though some do get the wrong idea and think otherwise. I apologize if people are getting the wrong idea here.
Active diffs are on the agenda in the long run obviously, but for now I just wish they make the clutch pack better. The only thing that's lacking is the preload, though it's possible that this will be corrected soon. Well, there's already the absurd locked diff anyway (effectively infinite preload).
Well, the real point of this thread is only to discuss the revival of castor settings for the road cars. Something like 2-8 degrees postive castor adjusment range, not the absurd levels we used to have back in S1 (more than 10 degrees negative/positive of castor! Wow).
Why castor? Well, castor is a very interesting variable. Theoretically, the camber gain is good for front end grip. In reality, too much can lead to twitchy handling as the front end tire contact angles change too drastically with steering angle change. In the end, it's the driver that actually decides how much castor he/she can take.
I remember there was already some thread related to flying cars syndrome, though I also remember that me and quite a few here agreed that the only solution is to at least apply some sort of simple damping (energy absorbing) physics.
Geez, when was the last time I called you stupid or "lacking of mental beans" even when I knew you were sometimes quite wrong about something? I was right all along in assuming that you DO have some personal agenda against me. And did you read the just a hunch part? The hunch was based on the fact that some people here are already complaining that the current simulation (great for its given limitations) is already making cars too complicated to set up.
Oh, you forgot to notice that even expensive European luxury and sports cars from Mercedes use multilinks too.
And what's wrong with a paying customer wishing that the product will get better physics wise? Why do I suddenly need to believe you're right just becasye you said so? And what if Scawen is working hard on physics as well as all the other stuff as we speak? Is it wrong to wish so? Well remember the tire modelling enhancements that came with patch S/T/U and the BF1 (the pleasant surprise)? What's wrong with thinking that the developers might have some goodies waiting for us or are already working on it?
Now who's the guy who has the personal agenda here? Improve physics simulation would make a lot of people and especially the physics guys happy (trust me, there are a lot of us who bougfht LFS for the physics) as well. Or do you have something against a lot of my fellow automotive engineering guys too?
Trist, why do I think that your current hostility against me has everything to do with the fact that I've mentioned a few RL machines with multilink suspensions? Oh, sorry I hurt your little feelings for proving you're not absolutely right on the road car bump steer issue.
I was simply contrasting real world vs idealized LFS universe on the wheel rate stuff.
Multilinks are so common these days and show up in cars form Mazda MP3s to Mitsubishi Lancer Evolutions to Mercedes S Class. If LFS is to continue to be a physics benchmark and provide an example for other racing sims, these things are unavoidable. I bet Scawen might be already working on proper 3D suspension as we speak.
Unless of course you don't mind LFS going the way of NFS. How I have fond memories of older NFS heading to the laws of physics as well as they could in their time. Remember the original NFS that was made with R&T? Or even NFS:PU that utilized 4 point physics (a simplified version of S1 physics in an attempt to err on the side of realism) but went bankrupt as arcadiness increasingly dominated the gaming scene?
I get a feeling that a lot here aren't quite ready for ultra-realistic vehicle physics yet. Just a hunch.