The arrival of the new AD-converter joystick ports (PDPI for instance),
makes it possible to make better pedal systems. What immidiately springs
to my mind is improving brake pedals. On all steering and pedal systems
I have tried, the pedals travel determines the amount of brakes applied.
However, the real thing is a pressure sensitive thing (you knew that,
didn't you?). I think it should be possible to make a pressure sensitive
device for a race sim controller.
The new AD-converters is much easier to cope with than the standard old
port beacuse you can feed a voltage into the port instead of the usual
impedance into the old RC-filter setup.
Has anyone any experience with this? Has anyone made their own pressure
sensitive thing?
I think the arrival of GPL has made me see that the next step of
evolution must come from developing the controller.
A brake pedal with a short travel, and letting the pressure determine
the amount of brakes would help us all outbraking those CCs (for those
of you who haven't tried, believe me, it's hard...)...
If no one has made a setup like this, I think I will go further with it,
because I guess the sim racing community should be extremely interested
in this... Who knows, I might find a solution that is cheap and highly
reliable...
---Asgeir---
You might try looking for an inexpensive strain gauge.
MM
Quoted text (28 lines)
> The arrival of the new AD-converter joystick ports (PDPI for instance), > makes it possible to make better pedal systems. What immidiately springs > to my mind is improving brake pedals. On all steering and pedal systems > I have tried, the pedals travel determines the amount of brakes applied. > However, the real thing is a pressure sensitive thing (you knew that, > didn't you?). I think it should be possible to make a pressure sensitive > device for a race sim controller. > The new AD-converters is much easier to cope with than the standard old > port beacuse you can feed a voltage into the port instead of the usual > impedance into the old RC-filter setup. > Has anyone any experience with this? Has anyone made their own pressure > sensitive thing? > I think the arrival of GPL has made me see that the next step of > evolution must come from developing the controller. > A brake pedal with a short travel, and letting the pressure determine > the amount of brakes would help us all outbraking those CCs (for those > of you who haven't tried, believe me, it's hard...)... > If no one has made a setup like this, I think I will go further with it, > because I guess the sim racing community should be extremely interested > in this... Who knows, I might find a solution that is cheap and highly > reliable... > ---Asgeir---<snip>
I own a hyperstimulator, which brake is pressure sensitive....I love
it!
Remco
asgeir nes?en wrote : <snip>
Get yourself a ECCI CDS5000... (not in production anymore but buy 1
second-hand hehe)
It has air-hydraulic control for the pedals ;-)
- Fran?ois Mnard <ymenard> Good race at the Brickyard!
- Official Mentally retarded guy of r.a.s.
- Excuse me for my English (I'm French speaking)
- Sponsored by http://www.awpss.com/ on the NROS
- "People think it must be fun to be a super genius, but they don't realise
how hard it is to put up with all the idiots in the world."--
Someone else in this ng. suggested making a cut in a tennis ball and
placing it under the break pedal.
If we really get technical here it's not pressure sensitive we want.
I once tried a car (think it was Citroen many years back) which had a
pressure sensitive break pedal - breaking force was proportional to
the force applied to the pedal but the pedal didn't move!!! It was
like pressing a brick wall and was absolutely horrible! So I guess we
really are talking about a combination of increasing pressure and
movement.
--
Mikko Harjula SQ Consulting Oy | If you email me from a
tel. ?3-3165206 33720 Tampere | use subject "I AM NOT SPAM"
fax ?3-3165201 FINLAND |
> On all steering and pedal systems
>I have tried, the pedals travel determines the amount of brakes applied.
>However, the real thing is a pressure sensitive thing (you knew that,
>didn't you?). I think it should be possible to make a pressure sensitive
>device for a race sim controller.
>Has anyone any experience with this?
ECCI have a new feature for the CDS4000 wheel/pedals that does just
this. I have it fitted as an upgrade to me pedal set which I received
a week ago.
The brake is pressure sensitive and you really need to stomp on it
near the limit of its travel. It's also apparently further adjustable
with additional upgrades, but the pressure required means that you'll
need to fix the pedals to the ground. Considering the size and weight
of these beauties already, this is quite something.
I've been getting used to it for the past week, gradually calibrating
in more and more pressure (after a few years of use of a normal spring
travel pedals I had trouble adjusting to this feature initially), and
frankly, it's awesome. Being able to *feel* the brakes almost, and
know when you're about to lock the wheels in GPL is a stunning thing
that I've gradually come to appreciate as I've become used to it.
GPL demands excellence to drive well. The CDS4000 provides excellence
of input. It's now just the driver that lets my lap times down!
Stuart
--
Stuart Booth
Somewhere in Buckinghamshire, England, UK
Note: My email address is in disguise! Remove trailing Z
The brake pedal I have designed for my u its incorporates and
two stage braking setup.
First half of pedal travel gives light braking (0-20%). At
this point the pedal becomes harder to press and the last half
travel gives 20-100% braking.
Both stages are progressive.
Redline Race Controls
Nigel of Lakewood Motorsports
Nascar Coruba & Coke Chevy
Hamilton
New Zealand
Nope, that's not good enough for me. I wan't brakes like in the real car:
When applied down to the "contact" - no brake effect. When "contact" - brake
effect directly after pressure, no movement!
I have of course considered several methods of using thresholds in order to
get more info from the pedal (and not relying on muscle memory), but it will
never be right...
---Asgeir---
Quoted text (17 lines)
> >Has anyone any experience with this? Has anyone made their own pressure > >sensitive thing? > The brake pedal I have designed for my u its incorporates and > two stage braking setup. > First half of pedal travel gives light braking (0-20%). At > this point the pedal becomes harder to press and the last half > travel gives 20-100% braking. > Both stages are progressive. > Redline Race Controls > Nigel of Lakewood Motorsports > Nascar Coruba & Coke Chevy > Hamilton > New ZealandI already know that the HyperStimulator has a pressure sensitive braking
device. It doesn't mean I'm going to buy a HyperStim. I'm looking for
do-it-yourself material; methods, transducers, amplifying circuits etc...
Besides, I like to be able to make my race car controller just the way I
want, this is the most important piece of equipment of my racing rig...
---Asgeir---
A normal brake pedal is quite pressure sensitive, although servos create a little
travel, in a matter of millimeters... The brake setup on race cars employs seldom
servos, and this means the brake pedal has next to no travel when the braking
surfaces are in contact. Remember, hydraulics are used, the brake fluid doesn't
compress at all, so the hydraulic pressure braking system is per definition
pressure sensitive!
The brakes of a race car should be efficient, not comfortable! If a race car brake
travels when you brake, it's time for a pitstop to find the leak...
---Asgeir---
Quoted text (18 lines)
> > You might try looking for an inexpensive strain gauge. > Someone else in this ng. suggested making a cut in a tennis ball and > placing it under the break pedal. > If we really get technical here it's not pressure sensitive we want. > I once tried a car (think it was Citroen many years back) which had a > pressure sensitive break pedal - breaking force was proportional to > the force applied to the pedal but the pedal didn't move!!! It was > like pressing a brick wall and was absolutely horrible! So I guess we > really are talking about a combination of increasing pressure and > movement. > -- > Mikko Harjula SQ Consulting Oy | If you email me from a > tel. ?3-3165206 33720 Tampere | use subject "I AM NOT SPAM" > fax ?3-3165201 FINLAND |Maybe I didn't explain problerly. On these units the first
10mm of pedal travel offers up to 30% braking(Slows the car
without chucking the weight around too much). The remainder of
the pedal travel becomes harder to press and from there the
brakes are very effective for heavy braking. It gives the user
feedback of the amount of braking they are applying to try and
give some feel for the lack of G-force in the sim.
Nigel
--
Redline Race Controls
Nigel of Lakewood Motorsports
Nascar Coruba & Coke Chevy
Hamilton
New Zealand
I don't see that as an especially great difficulty. A cone shaped ***
bumper behind the pedal, and a strain gauge ought to the trick.
Hmmm. I have a 27" Magnavox sitting here unused, and a go-kart seat --
chassis and all, too -- in the garage. I wonder if I can do anything
with that... Hmmmm... Can't decide if I want to put a pot on the
steering column, or just find a place to mount the MS FF. (What a waste
of a perfectly good chassis. Gotta move the pool table, too. :)
Michael.
