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Rec.Autos.Simulators Archive

Engine Braking...

11 posts by 9 people · 03 Jun 1996 - 07 Jun 1996

John Marsha 03 Jun 1996#320722
Hi everyone, I enjoy playing IndyCar 1 and F1GP, but I was just wondering if the engine model these games use is actually true-to-life. In particular, when approaching a corner, shifting down through the gears has very little effect on car speed as far as I can tell, although engine revs increase as expected (blowing the engine if not careful in IndyCar!). Is this like the real thing? Do hi-po engines let you buzz them up to 14,000 revs without slowing the car?????? Thanks, JM /---------------------------------------------------------------------------\
Quoted text (8 lines)| Computer (adj) : One who has the ability to compute, or count | | | | Digital (adj) : Pertaining to the fingers | | | | Digital Computer (n) : A person who can count on their fingers | |---------------------------------------------------------------------------| |John Marshall, Royal Melbourne Institute of Technology, Melbourne Australia| | B.Eng.(Comp.Sys.Eng.) & B.App.Sci.(Comp.Sci.) 2nd Year... |
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If you are going wide open down a straight, let off, and down shift without braking, you will pop the engine. You need to use the brakes and engine at the same time. Mike
According to a reliable source at Papy, there is no engine braking in their simulators. I really would like this.. BUT, it would make icr2 and Nascar on road courses impossible. This is because in a real race car, you double clutch and rev match while downshifting in order to prevent engine braking (thus all braking is controlled by the pedal to ensure ultimate smoothness). Without a clutch there would be no way to sim this, and you'd incur a severe physics penalty for downshifting. I guess what I would say is Papy is simulating double clutching automatically. A great compromise solution would be to simulate engine braking while in a single gear, but bypass it during a downshift... but that sounds pretty tricky (at what point after the downshift to you enable engine braking?). OR-- HOW ABOUT ENABLING A CLUTCH CONTROL PEDAL!!?? ( 2 joysticks = 4 axis, 1 steering, 3 pedals.. it can be done...) Anyways.. my .02. Tim V
Quoted text (23 lines)> Hi everyone, > I enjoy playing IndyCar 1 and F1GP, but I was just wondering if the > engine model these games use is actually true-to-life. In particular, > when approaching a corner, shifting down through the gears > has very little effect on car speed as far as I can tell, although > engine revs increase as expected (blowing the engine if not careful > in IndyCar!). Is this like the real thing? Do hi-po engines let you > buzz them up to 14,000 revs without slowing the car?????? > Thanks, > JM > /---------------------------------------------------------------------------\ > | Computer (adj) : One who has the ability to compute, or count | > | | > | Digital (adj) : Pertaining to the fingers | > | | > | Digital Computer (n) : A person who can count on their fingers | > |---------------------------------------------------------------------------| > |John Marshall, Royal Melbourne Institute of Technology, Melbourne Australia| > | B.Eng.(Comp.Sys.Eng.) & B.App.Sci.(Comp.Sci.) 2nd Year... | > \---------------------------------------------------------------------------/
F1GP *does* engine brake, but the stopping power is much less than using the brakes. Engine braking alone would require you to let up way too early and so it is not terribly useful if you wish to be competative. -- Gary Beeton --
In article <Pine.HPP.3.91.960603133748.13175A- In F1 the engines are so powerful and the drag so huge that lifting off the accelerator feels like putting on the brakes in a road car - the drag alone slows the car a LOT. Cheers! John _________________________________ __ _____| |_____ __ _________| |__| :| John Wallace | |__| |_________ \ :| |::| :| Team WW Racing TSW | |::| | / > :| |::| :|_________________________________| |::| | < / :|__|::|____:/ Sim Racing News \.____|::|__| \ /_______:/ \::/ http://www.dcn.ed.ac.uk/pulse/index.htm \::/ \._______\
Gregory Fu 04 Jun 1996#320813
>If you are going wide open down a straight, let off, and down shift >without braking, you will pop the engine. You need to use the brakes >and engine at the same time. Most of a braking on a car like that when you lift will probably come from aerodynamic drag. I read in R&T, when one of their writers drove a 92 or 93 Williams, that lifting in the F1 car was like max braking in a street car! Gregory Fung Vancouver, B.C., Canada
Gregory Fu 04 Jun 1996#320814
>OR-- HOW ABOUT ENABLING A CLUTCH CONTROL PEDAL!!?? >( 2 joysticks = 4 axis, 1 steering, 3 pedals.. it can be done...) But then Thrustmaster has to wise up and PUT that 3rd pedal in their products... Gregory Fung Vancouver, B.C., Canada
C Sh 04 Jun 1996#320815
In reality, Williams Renault can exert 1 G of engine brake force from there 1996 car, according to D Hill Chris => According to a reliable source at Papy, there is no engine braking in their => simulators. I really would like this.. BUT, it would make icr2 and Nascar => on road courses impossible. => => This is because in a real race car, you double clutch and rev match while => downshifting in order to prevent engine braking (thus all braking is => controlled => by the pedal to ensure ultimate smoothness). Without a clutch there would => be no way to sim this, and you'd incur a severe physics penalty for => downshifting. I guess what I would say is Papy is simulating double => clutching => automatically. => => A great compromise solution would be to simulate engine braking while in a => single => gear, but bypass it during a downshift... but that sounds pretty tricky (at => what => point after the downshift to you enable engine braking?). => => OR-- HOW ABOUT ENABLING A CLUTCH CONTROL PEDAL!!?? => ( 2 joysticks = 4 axis, 1 steering, 3 pedals.. it can be done...) => => Anyways.. my .02. => => Tim V => => => > => > Hi everyone, => > I enjoy playing IndyCar 1 and F1GP, but I was just wondering if the => > engine model these games use is actually true-to-life. In particular, => > when approaching a corner, shifting down through the gears => > has very little effect on car speed as far as I can tell, although => > engine revs increase as expected (blowing the engine if not careful => > in IndyCar!). Is this like the real thing? Do hi-po engines let you => > buzz them up to 14,000 revs without slowing the car?????? => > => > Thanks, => > JM => > => > => /--------------------------------------------------------------------------- => \ => > | Computer (adj) : One who has the ability to compute, or count => | => > | => | => > | Digital (adj) : Pertaining to the fingers => | => > | => | => > | Digital Computer (n) : A person who can count on their fingers => | => > => |--------------------------------------------------------------------------- => | => > |John Marshall, Royal Melbourne Institute of Technology, Melbourne => Australia| => > | B.Eng.(Comp.Sys.Eng.) & B.App.Sci.(Comp.Sci.) 2nd Year... => | => | => > => \--------------------------------------------------------------------------- => /
I was reading the posts about engine brakes and clutchs etc. I thought I might shared my thoughts on this as I am about to fit the clutch pedal to my home built pedals system. It would work by fitting a micro switch on the pedal that is wired to the common of the gear shift switch which will be open when my foot is off the clutch and closed when I press the clutch in. In effect this means that the gear shift switch won't work until I hit the clutch pedal and close the circuit. I guess its a poor mans simulated clutch. I have already tryed it on a temp basis and it works. And for Papy... I still say GIVE ME A NUETRAL GEAR SO I CAN HIT THE GAS,DROP THE CLUTCH AND BURN ***. -- Nigel of Lakewood Racing Lakewood Computers New Zealand
Gregory Fu 07 Jun 1996#321164
>In reality, Williams Renault can exert 1 G of engine brake force >from there 1996 car, according to D Hill If this is a driver talking, this probably means he's just lifting. This 1G could be coming from both drag and engine. It's impossible that the a whole G is coming from the engine alone. He's probably never decluted the car to isolate only the aerodyamic braking effect. In ICR2, you do notice way more drag braking with a road course setup than a Speedway setup though, eg Michigan vs Milwaukee. Gregory Fung Vancouver, B.C., Canada
Craig Hea 07 Jun 1996#321165
: In reality, Williams Renault can exert 1 G of engine brake force : from there 1996 car, according to D Hill Can you be more specific about your source? I suspect Damon Hill would have been talking about deceleration due to drag rather than engine braking. F1 engines have no flywheel and a high compression ratio, so engine braking will be considerably more than a road car, but still a lot less of a factor than the aerodynamic drag, I would think.

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