rec.autos.simulators

An Idea for brake peddals -- After GPL

Thad Failo

An Idea for brake peddals -- After GPL

by Thad Failo » Fri, 10 Apr 1998 04:00:00

First a few questions and statements?

What did the actual brake pedal feel like when pressing down on them?  Where
they easy to push on up to a point, then get harder to push?  For instance,
In my car (and I know it is not a GP car)  when I press on the brake, I
usually go to the same spot for light braking.  From that point on the
pedal, there is less resistance to me pressing on it.  If I have to brake
harder then I push harder on the brake pedal, thus going into a noticeably
stiffer section of the pedals travel.  You might have to go experiment to
see what I am talking about.

I made my own gas&brake pedals.  The problem with them is that the
resistance is relatively the same throughout the entire movement of the
pedal.  As I see it, not a big problem with the gas pedal.  I think, that
having a pedal that has relatively the same resistance is not as, should I
say, realistic as it could be.  I work in building controls and someone once
told me, "If the building design is bad, then it will make well designed
controls look bad. Same holds true for the controls.  If the control design
is bad, then it will make a well designed building look bad."  My big
questions is this:  Would making my brake pedal have a two stage resistance
device make the more so realistic?

shred

An Idea for brake peddals -- After GPL

by shred » Fri, 10 Apr 1998 04:00:00

how about a progressive rate spring for the brake pedal?

there's gotta be a billion different rate variations available....

shred

JulianDat

An Idea for brake peddals -- After GPL

by JulianDat » Fri, 10 Apr 1998 04:00:00

Uhh.. The ECCI CDS5000 models this with variable air pressure on the brake pedal
.

take care..

jd

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Guy Leac

An Idea for brake peddals -- After GPL

by Guy Leac » Sat, 11 Apr 1998 04:00:00

This could be achieved by using either air pressure or the easier way(I
presume)a big *** bush behind the pedal which would get harder to push the
further you pressed against it.
Enough Rambling.
See Ya


> First a few questions and statements?

> What did the actual brake pedal feel like when pressing down on them?  Where
> they easy to push on up to a point, then get harder to push?  For instance,
> In my car (and I know it is not a GP car)  when I press on the brake, I
> usually go to the same spot for light braking.  From that point on the
> pedal, there is less resistance to me pressing on it.  If I have to brake
> harder then I push harder on the brake pedal, thus going into a noticeably
> stiffer section of the pedals travel.  You might have to go experiment to
> see what I am talking about.

> I made my own gas&brake pedals.  The problem with them is that the
> resistance is relatively the same throughout the entire movement of the
> pedal.  As I see it, not a big problem with the gas pedal.  I think, that
> having a pedal that has relatively the same resistance is not as, should I
> say, realistic as it could be.  I work in building controls and someone once
> told me, "If the building design is bad, then it will make well designed
> controls look bad. Same holds true for the controls.  If the control design
> is bad, then it will make a well designed building look bad."  My big
> questions is this:  Would making my brake pedal have a two stage resistance
> device make the more so realistic?

Lutrell Harm

An Idea for brake peddals -- After GPL

by Lutrell Harm » Sun, 12 Apr 1998 04:00:00


>First a few questions and statements?

>What did the actual brake pedal feel like when pressing down on them? Where
>they easy to push on up to a point, then get harder to push?    Would

making my
brake pedal have a two stage resistance device make the more so realistic?

Race car brake pedal feel depends on the type of brakes used.
Most modern formula car brakes have less than an inch of travel
and can feel very solid like your pressing on something that can't move.
I made my own pedals using bump *** stops from shock absorbers
on the brake pedal. The problem with this is that it only increases braking
 with  a lot of pedal movement. A real race car pedal can increase pressure
 to the brakes with very little pedal movement. To really simulate this you
need a hydraulic or air pressure system with an electrical pressure sensor.
I am considering using a real  brake master cylinder and a pressure sensor
from an electric oil gauge.

Good luck :-)
D Sport Racer #74

Trip

An Idea for brake peddals -- After GPL

by Trip » Tue, 14 Apr 1998 04:00:00



> >First a few questions and statements?

> >What did the actual brake pedal feel like when pressing down on them? Where
> >they easy to push on up to a point, then get harder to push?    Would
> making my
> brake pedal have a two stage resistance device make the more so realistic?

> Race car brake pedal feel depends on the type of brakes used.
> Most modern formula car brakes have less than an inch of travel
> and can feel very solid like your pressing on something that can't move.
> I made my own pedals using bump *** stops from shock absorbers
> on the brake pedal. The problem with this is that it only increases braking
>  with  a lot of pedal movement. A real race car pedal can increase pressure
>  to the brakes with very little pedal movement. To really simulate this you
> need a hydraulic or air pressure system with an electrical pressure sensor.
> I am considering using a real  brake master cylinder and a pressure sensor
> from an electric oil gauge.

You might want to look into strain guages... they measure how hard
you're pressing rather than how far your pressing. might be just the
thing for brakes.

Trips


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