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Rec.Autos.Simulators Archive

GPL : Left foot brake and Steering Linearity

16 posts by 10 people · 28 Sep 1998 - 03 Oct 1998

McKafre 28 Sep 1998#422725
(Nice subject, isn't ?) :) Hiya A) Left foot braking, I brake withe the left foot, but im not using Left foot braking... (using the brake at the same time than the throttle for balancing the car ...) are the fastests guys using it ? (me 1:08.14 at the glen demo) I dont want to be fastest, im looking for consistent times ... will LF braking help me ? B) What steering linearity are you using ? thanks :D Ayrton McKafre (busco Geologa, hay alguna por ahi?)
Mike Laskey 28 Sep 1998#422726
I've been testing GPL for quite a while and I don't hang around for long in the corners... I use a CH Flightstick Pro joystick which of course is one input on the single Y axis. I think Alison, John Wallace and maybe a couple of the other testers might use left foot braking, or at least use the brake and accelerator on separate channels for the race starts. I couldn't say if they find it in advantage for them - I'm equal in terms of lap time on the tracks on which I specialise, that's all I can say. Mike.
Hi Mike I have been in the habbit of left foot braking in Nascar 2 but mainly it's because I don't need my left foot for the clutch. In GPL on the other hand I have the clutch and make plenty of use of it. As it was mentioned by someone else braking at the same time as accelerating is the same as lifting off the gas pedal as I have my accel and brake on the same axis. My clutch use Joy 2 analog 1. I think I will try seperate axis for accel and brake as an experiment. -- Nigel of Lakewood Motorsports (Memeber of the Nascar Offline Racing Series) Nascar Coruba & Coke Chevy Hamilton New Zealand
On Mon, 28 Sep 1998 19:19:43 +0100, "Mike Laskey"
Quoted text (7 lines)>I've been testing GPL for quite a while and I don't hang around for long in >the corners... I use a CH Flightstick Pro joystick which of course is one >input on the single Y axis. I think Alison, John Wallace and maybe a couple >of the other testers might use left foot braking, or at least use the brake >and accelerator on separate channels for the race starts. I couldn't say if >they find it in advantage for them - I'm equal in terms of lap time on the >tracks on which I specialise, that's all I can say.
You should realise that Mike is mental though.. :-) I have gas and brake split onto separate axes and I also left foot brake, often against power. I find it easier to stablise the car into corners and to make minute adjustments. I don't think the split helps at the start except at tracks like Spa where you are on a hill and need to hold the car on the brake - with split axes and left foot braking you can hold the car on the brake and still maintain optimum revs. For starts though a clutch is pretty nifty, although difficult to get the hang of. As you would expect from GPL every car gets off the line differently, and after driving a Ferrari for a while and perfecting my starts I had a hell of a time going back to the Lotus and either bogging down with too few revs or melting my tyres all over the track in a frenzy of wheelspin. Starts can't be practised enough though - you will spend hours trying to catch the fast guys and forlornly gunning for pole, but if you can get on the front row and outdrag them you can really spoil their day even without being the fastest car out there. Cheers! John
rob 28 Sep 1998#422729
I guess you are using a steering wheel (since you talked about pedals, I guess so). Using a joystick, I had a terrible time with unwanted steering until I switched to nonlinear steering. But I'll bet a wheel is much more precise. (Is it?) rob. <snip>
Hehe, why do you think they used steering wheels and not sticks back in -67? Of course it is more precise, so you have only one thing to do: Get a Wheel!!! ---Asgeir---
Quoted text (17 lines)> I guess you are using a steering wheel (since you talked about pedals, I > guess so). > Using a joystick, I had a terrible time with unwanted steering until I > switched to > nonlinear steering. But I'll bet a wheel is much more precise. (Is it?) > rob. > <snip> > >>B) What steering linearity are you using ? > >Fully linear. > >Cheers, > >Richard
I'm pretty sure they did all kind of tricks back in -67. The famous Senna toe-and-heel technique (braking and throttleing at the same time, also called trailbraking if I'm not wrong...), wasn't invented by Senna, he just applied it in a winning way with the turbo cars, it was much older, you can read about this technique in Taruffis book from the 50ties. He explained techniques with different setups, the gas in the middle and the brake on the right, and the traditional, from left, clutch, brake, gas. The idea was to use the heel on the "main" pedal, and then feathering the secondary pedal with the toe. I'm not sure whether they used their left foot or not, I believe they didn't, because using the left foot on the brakes would not allow the driver to change gear before the braking is all done. I guess they preferred to use the right foot even for the trailbraking, so that the changing of gears and braking/trailbraking could take place simultaneously... We, on the other hand, don't have to clutch, so we can use left foot braking, and there isn't any doubt that this is the most effective way. Braking and throttleing at the same time extend the possibilities for car control. Anyway, It is cheating, no doubt (if I am right in my assumption that they didn't use their left foot for braking), so we have to find out if they really didn't use their left foot, so that we indeed will be driving these cars like they did back in -67... ---Asgeir---
Quoted text (18 lines)> (Nice subject, isn't ?) :) > Hiya > A) Left foot braking, I brake withe the left foot, but im not using Left > foot braking... (using the brake at the same time than the throttle for > balancing the car ...) > are the fastests guys using it ? (me 1:08.14 at the glen demo) I dont want > to be fastest, im looking for consistent times ... will LF braking help me > ? > B) What steering linearity are you using ? > thanks :D > Ayrton McKafre > (busco Geologa, hay alguna por ahi?)
On Tue, 29 Sep 1998 10:10:03 +0200, "asgeir nes?en" >I'm pretty sure they did all kind of tricks back in -67. The famous Senna >toe-and-heel technique (braking and throttleing at the same time, also called >trailbraking if I'm not wrong...), wasn't invented by Senna, he just applied it >in a winning way with the turbo cars, it was much older, you can read about >this technique in Taruffis book from the 50ties. What Senna did wasn't heel-and-toe, his style was to continually pump the throttle staccato style to utilise all the grip available and to be back on the power as soon as it was possible - it turned out that such a style perfectly suited the early turbo cars as it kept the boost pressure up and gave him extra power out of the corners. Cheers! John
meij 29 Sep 1998#422961
>What Senna did wasn't heel-and-toe, his style was to continually pump >the throttle staccato style to utilise all the grip available and to >be back on the power as soon as it was possible - it turned out that >such a style perfectly suited the early turbo cars as it kept the >boost pressure up and gave him extra power out of the corners. Senna really got into this after the turbos went. Most top drivers were adept at keeping the boost up in turns in the turbo era, but Senna used this "blipping" in order to get the throttle all the way open faster than anyone else rather than the more conventional smooth throttle action. I seem to remember a telemetry trace on a BBC2 documentary a couple of years back showing how it was done compared to another fast driver of the era (or slow depending on your opinion of Jonathon Palmer ;) M
>Senna really got into this after the turbos went. Most top drivers were adept >at keeping the boost up in turns in the turbo era, but Senna used this >"blipping" in order to get the throttle all the way open faster than anyone >else rather than the more conventional smooth throttle action. I know he did this while turbos were prevalent since I recall an interview with Prost where he described how he knew of this technique of Senna's and had been urgend to try it thanks to the benefits it brought. He had tried it and couldn't make it work. Yes, I saw that. Bloomin' strange I though that Jonathon Palmer seemed to take great satisfaction in pointing out how Senna pulled out 0.2s on him through one corner through superior technique - I'm not sure too many drivers would happily describe that about their team-mate! Cheers! John
Mike Laskey 29 Sep 1998#422963
>You should realise that Mike is mental though.. :-) This is true <g>
Mike Laskey 29 Sep 1998#422964
>Hehe, why do you think they used steering wheels and not sticks back in -67? >Of course it is more precise, so you have only one thing to do: Get a >Wheel!!! They should have been fitted with sticks. :-) If only CH were around back then to make the Flightstick Pro!! (hopefully with more robust springs than they fit now, however). Mike.
Manuel Paz 30 Sep 1998#423262
to start, for trailbraking (thats how is usually called the process of keep braking into the curves to keep balancing the cars), you should have a wheel with separate axis as Nascar Pro Racing Wheel if not, you are doing nothing because braking will cancel throttle. Manuel Pazo Caracas, Venezuela
Quoted text (13 lines)> >I guess you are using a steering wheel (since you talked about pedals, I > >guess so). > >Using a joystick, I had a terrible time with unwanted steering until I > >switched to > >nonlinear steering. But I'll bet a wheel is much more precise. (Is it?) > Yes, they are a lot more precise. Even a cheap wheel should give better > precision around the centre mark than a joystick. > Joystick users will almost certainly find nonlinear the better setting. > Many wheel users seem to as well although I'm convinced that they're > limiting their ultimate potential by doing so (that's my line and I'm > sticking to it, Byron <g>).
Hmmmmm, now you got me thinking! And scared! I dunno if I wanna be that good, hehehehehehehe. Gee, I ain't even got around to rigging up the dual axis caper yet. After that I might try a little linear testing and see what happens :) -- Byron Forbes Captain of Team Lightning Bolt http://members.tripod.com/~HOSHUMUNGUS and http://www.frontiernet.net/~godsoe/bolt/home.htm
Mike Laskey 02 Oct 1998#423952
>Yep, go for the dual axes stuff first. Nutters like Mike Laskey can be >incredibly fast with just a joystick (I've seen him race and I still can't >believe how he does it <g>) for the rest of us, dual axes can make things More skill than can possibly be imagined, Richard!!! hehe <g> Mike.
m.seery 03 Oct 1998#424270
You are indeed right Agesir. I have video footage of Jim Clark doing the heel and toe thing.The left foot was used on the clutch. Clark used to cover most of the brake with the front of his foot and used the outside part of the right foot on the gas. He used to rock sideways in order to blip the throttle on downchanges. Regards Mark no doubt (if I am right in my assumption that they
Quoted text (27 lines)> didn't use their left foot for braking), so we have to find out if they really > didn't use their left foot, so that we indeed will be driving these cars like > they did back in -67... > ---Asgeir--- > > (Nice subject, isn't ?) :) > > Hiya > > A) Left foot braking, I brake withe the left foot, but im not using Left > > foot braking... (using the brake at the same time than the throttle for > > balancing the car ...) > > are the fastests guys using it ? (me 1:08.14 at the glen demo) I dont want > > to be fastest, im looking for consistent times ... will LF braking help me > > ? > > B) What steering linearity are you using ? > > thanks :D > > Ayrton McKafre > > (busco Geologa, hay alguna por ahi?)

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