Design for over or under steer?

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raymondu999
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Re: Hamilton over or under steer?

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I think n_smikle was talking of the race.
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dougskullery
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Re: Hamilton over or under steer?

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In answer to the question "oversteer or understeer" – yes, oversteer or understeer. Like Alonso, he drives however he needs to in order to extract the most from the car.

gibells
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Re: Hamilton over or under steer?

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The advent of heavier cars (i.e. no refueling) and the Pirelli Show tyres, to me, has taken this car control advantage away from him and given it to the smoother guys.

I guess it's one trade off for the 'show' and I'd bet Schumi wouldn't have had as many titles had it been such.

Imolasmemory
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Re: Hamilton over or under steer?

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raymondu999 wrote:Here's what Paddy Lowe said in specific (referenced in my post and n_smikle's)
He's tremendously good at controlling a car in oversteer. We saw that from the first moment he got in our car. We saw the data, and on every entry we could see there was a massive correction on the steering, and our normal drivers would have been bitching like hell that the car was undriveable, yet he didn't even pass comment. So with a driver like that, you're better equipped to push the boundaries to new levels. Speaking generically of that characteristic, a lot of the performance limit of a car is set by stability; if you can't hang on to it, you will have to introduce understeer in that zone. But if you have a driver better able to deal with oversteer in those zones that induce it, then you will have a less-understeery car elsewhere and therefore more total grip over the lap. The great drivers over the years - Senna, Schumacher, Mansell - have all had that ability. Like for like compared to other drivers, they want more front end.
Neno wrote:he already prove him self he can drive all kind of cars, even crap cars like 2009.
The point is there is no single "crap" car. Some are crap because of inconsistencies in balance, some due to massive understeer, massive oversteer, because they can't the tyres working, whatever.
i never see from Hamilton to saying my car oversteering like Button usually do, i dont have grip and this kind of things.
That's the point. If you can't drive around it, inevitably you have to let others know, sso they can help you find a solution. But if you have chronic imbalance and you're still happy anyways, it's just normal to you and you won't care either way, and thus not need to complain.
Hi everyone, hope everyone had a nice xmas and new year. This is my first post - I'm not very computer savvy so here goes.

I think the above post by raymond is very good. If I may elaborate on the above quote by Paddy Lowe. I've competed at a reasonable level in karts so can relate to this, though far from an expert.

Whilst each corner around a given race track has its own characteristics i.e naturally induces understeer, oversteer or reasonably neutral. However most tracks have majority of corners that induce understeer with a typical neutral setup car (let's call this the reference baseline setup). Hence drivers will try and setup the car such that they minimise this understeer as much as possible. Unfortunately, having a pointy car that doesn't understeer in the majority of the corners means that where the previous baseline setup was neutral in some corners, it would now have oversteer in those corners, and where that previous baseline setup was oversteering in some corners, it would now be very rear snappy and difficult to hold onto in those corners.

So a driver will have to judge whether he sacrifices some laptime due to understeer in majority of corners by sticking with the baseline setup, but with the ability to have some stability i.e safety, in the corners that typically induce oversteer.

Or whether he goes for a pointy car that can maximise corner speed in the majority of corners with minimal understeer knowing that he either has to take it easy in oversteer corners i.e leave some laptime on the table, or if he's able to hang onto the car, have a setup that is optimal for laptime.

A driver who can't hang onto an unstable car will try and work out which loses him more laptime - going for an understeery but safe car, or going for a pointy car but then taking it slow around the oversteer inducing corners.

Let's also look at a scenario where there is a hypothetical track that has very few understeer inducing corners i.e they are mostly either neutral or oversteer inducing. What would be the quickest setup? In that case you will generally find both drivers - the one who can't hang onto an unstable car, and the one who can, both converge into a similar setup since understeer is no longer the limiting factor.

What about the other way around - a hypothetical track that has all understeer inducing corners except for say one corner which induces oversteer. Well again, both drivers will converge on similar setups i.e even the driver who can't hang onto an unstable car will go for a pointy setup because it's more important to have a car that turns in for the majority of the understeer inducing corners and he will simply go slower i.e lose a tenth or two in that one oversteer inducing corner compared to the driver who can hang onto it.

Getting back to how this all relates to Hamilton, his driving style and what he prefers. Like most drivers he prefers a neutral handling car - one that doesn't understeer or oversteer. However there really is no such thing at most tracks. A car will always understeer in some corners whilst oversteering in others. So if there are a sufficient number of understeer inducing corners, Hamilton will go for a setup that gets the car turned in nicely into those corners whilst his car control enables him to lose minimal time in the other oversteer inducing corners by correcting and controlling the slide whilst keeping the power on.

I also agree that the Pirellis so far seem to be such that they don't tolerate slides that well so it's better to setup with understeer to minimise the rear sliding, especially for the race.

ChipAyten
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Re: Hamilton over or under steer?

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Hamilton's style is more point and go. Schumacher in contrast would whip the car into the corner and let the rear wheels steer the car to a degree. So understeer fits Hamilton's style more. He would do very well in a FWD racing series. Well, he'd do well in any series too haha

jamsbong
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Re: Hamilton over or under steer?

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Javert wrote:Hmmm ... I think that an oversteery setup potentially gives you faster lap time (less time spent steering, more linear trajectories) but with less grip during middle corner and corner exit. And would have killed 2012 Pirelli ...
I don't agree with this point. I believe a neutral setup will provide the best grip on the front and rear tires thus making your car pull max G. Colin Chapman philosophy.
So why drivers who can handle oversteer tends to be the fastest? That is to do with the fact they can handle a snappy/unstable car. but after it snaps, you want it to return to neutral to maintain max grip. No professional driver will deliberately make the tail of of the car loose because that just slows down the car. Even drifters prefer a neutral car and use the weight shifts to adjust the car to an oversteer state.

So why Hamilton's driving is so tame and appears as it is understeer like? I think that is to do with Pirelli tires. Give him a set of Michelins and he will drive it like a rally star.

ChipAyten
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Re: Hamilton over or under steer?

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jamsbong wrote:
Javert wrote:Hmmm ... I think that an oversteery setup potentially gives you faster lap time (less time spent steering, more linear trajectories) but with less grip during middle corner and corner exit. And would have killed 2012 Pirelli ...
I don't agree with this point. I believe a neutral setup will provide the best grip on the front and rear tires thus making your car pull max G. Colin Chapman philosophy.
So why drivers who can handle oversteer tends to be the fastest? That is to do with the fact they can handle a snappy/unstable car. but after it snaps, you want it to return to neutral to maintain max grip. No professional driver will deliberately make the tail of of the car loose because that just slows down the car. Even drifters prefer a neutral car and use the weight shifts to adjust the car to an oversteer state.

So why Hamilton's driving is so tame and appears as it is understeer like? I think that is to do with Pirelli tires. Give him a set of Michelins and he will drive it like a rally star.
I agree with your disagreement. Taking oversteer to the extreme means you're drifting, which is not the fastest away around a track. Although F1 doesn't go to such levels I make the comparison to illustrate my point.

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turbof1
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Re: Hamilton over or under steer?

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jamsbong wrote:
So why Hamilton's driving is so tame and appears as it is understeer like? I think that is to do with Pirelli tires. Give him a set of Michelins and he will drive it like a rally star.
Good point. He kind of showed that at Austin where low grip, low tire degredation was the norm. He truly excells in such a situation.
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k.ko100v
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Re: Hamilton over or under steer?

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Hi all.

Before everything, i want to apologize for my English :)

This is a very good thread. And it`s not just about Hamilton`s driving style. It`s about the benefits, of over and understeering driving.

I have some experience in amateur racing (that includes time attacks, with normal RWD car with some improvements and karting) The biggest nightmare (for me and for most RWD drivers) is, when the car is understeering in slow corners and oversteering in fast corners. In my point of view, the best setup is little oversteer in slow corners and neutral setup or little understeer in very fast corners.

Now about Hamilton. In F1 when we talk about oversteer style, I believe no one means drift. This is a state of the traction witch helps the car to steer with the back wheels. That allows the driver to turn earlier, hit the trottle earlier, and exit the corner with bigger speed. I believe, that Hamilton(and not only He) is master of that driving style, of course when the conditions of the car, the tyres , the track allows that.

Abu Dhabi pole lap of Hamilton:
http://www.youtube.com/watch?v=PDAIojKgPEY

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turbof1
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Re: Hamilton over or under steer?

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Yes exactly! Whenever he is able to, he makes the back step a little bit out, which lines him up better at the corner. You see he mostly does this in the slower corners, though he also did this at high speeds (the biggest example I recall is Melbourne turn 11). That is what makes so good at Abu Dhabi everytime: that last slow sector he can really do what he wants no matter the car. No one else seems to be able to replicate his driving style there while he makes all the difference in that sector.

In 2012 this also had an extra benificiary effect: he could get the heat into the tyres much better.
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PlatinumZealot
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Re: Hamilton over or under steer?

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Hamilton might not be affected by the extra low rpm torque of the 2014 turbo engines when coming out of low traction corners. I certainly wasn't watching F1 in the days when cars were sliding around all over the place, but it would be a real joy to see that with the current F1.
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Jersey Tom
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Re: Hamilton over or under steer?

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That tendency or ability to control slide-y cars may be a double edged sword. Even as it stands, he certainly likes to really push braking deep into corners and at times it really beats the hell out of front tires. Comes close to or briefly locks inside front tires quite often.

If you start taking that approach on corner exit and letting the rear tires spin and slide around, you're going to kill them off very quickly. Tire management has been such a big thing with the Pirelli's lack of durability / longevity... I'd say the edge in race trim would go to the team and driver that can be most disciplined with throttle application, and can get the cars to turn well from center out without having to do it with the right foot.
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PlatinumZealot
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Re: Hamilton over or under steer?

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Over-steer on entry to get the car lined up for the exit might be reward from a late braking entry compromise. I guess its a balance... burn front tyres on entry or burn the rears on exit?
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flynfrog
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Re: Hamilton over or under steer?

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n smikle wrote:Over-steer on entry to get the car lined up for the exit might be reward from a late braking entry compromise. I guess its a balance... burn front tyres on entry or burn the rears on exit?
Or not over brake the car on entry keep the front wheels for steering then you don't need to slide the back to line up the car on exit.

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ringo
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Re: Hamilton over or under steer?

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That mclaren car is mis leasding though, I think it's sprung so stiffly that you will see front wheel locking since wheels have different loading but the same braking pressure. At one race, i can't remember which one, USA? Button was locking almost every turn, and his style is quite different.
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