From: ChrisCoaster on 20 Feb 2010 22:20
On Feb 20, 9:42 pm, Hachiroku $B%O%A%m%/(B <Tru...(a)e86.GTS> wrote:
> On Sat, 20 Feb 2010 17:54:44 -0800, ChrisCoaster wrote:
> > I never said rule out power steering completely. Just build a hydraulic
> > system that #1. facilitates parking, #2. tapers off gradually up until 20
> > - 30mph(depending upon size/weight of vehicle), until #3. it shuts down
> > completely.
> I have that on my Corolla
> Notice the model year in the URL...
Wow - a fastback 'rolly! Notice I didn't say "hatchback". That
actually holds its own against anything after 2003 as far as looks
goes! Whatever happened to those days, man?
Well, nice to know you have ps similar to what I described above.
There are two main categories of power steering - regardless of
form(electric or hydro): fixed and variable. Manufacturers,
particularly GM, were notorious for using a waaayyy overboosted fixed
setting on most platforms, making even a 20ft Bonnie or DeVille a snap
to park - but impossible to maneuver through turns or curves.
Now why did they do that, Hachi? So LAZY AMERICANS who want
everything EASY didn't have trouble parking the damn things!!
"Handling"? Duhhh..whut's that? LOL
Next is variable ps, which uses bleed-back or speed-related sensors to
gradually reduce the ps assist as veh. speed increased. But that
costs $$$, right? Which is where I come in:
If variable PS is so expensive and/or difficult to manufacture for the
masses(those folks who don't drive expensive German sedans), then I
for one would gladly settle for a car that is *a bit* of a beast to
park, but tight and stable at any speed over 10mph. That is, a fixed
pressure PS system at a lower than usual pressure.
I know this is probably in the works, but I think a dashboard push-
button solution might help - have three settings for steering assist:
Max, Normal/Var., and "Sport"(which addresses the desires in my last
paragraph). This is something where an Electric PS might really shine
- since it's all electric, have an electronic user interface so
different drivers can select the amount of road feedback and steering
feel they desire simply by selecting one of several settings. Build
in a brake-pedal sensor so a selection canNOT be made unless a foot is
on the brake.
From: Mr Coleman on 20 Feb 2010 22:46
In message <hlo3b1$d1l$1(a)news.eternal-september.org>,
>Nissan learned their quality lesson in the 90's, and they changed. Expect
>Toyota to do the same.
This side of the pond, Nissan has gone down in quality since it merged
From: Clive Coleman on 20 Feb 2010 23:27
In message <hlpl6l$k3i$1(a)panix2.panix.com>, Scott Dorsey
>Too many GM products steer like ocean liners... you can turn the wheel
>20 degrees and nothing happens, the dead band is so severe.
If you can turn the wheel at all from straight without the front wheels
moving the your vehicle is using "Recirculating Ball", this system
normally leaves a dead zone in the middle, but some car makers like it
as it makes the steering geometry simpler, especially when setting up
Ackermanns principle. Here in the UK, only Rack and Pinion is used, as
it's the only steering system precise enough (no play) to get through
From: Clive Coleman on 20 Feb 2010 23:34
In message <feKdnQj3EumcpuLWnZ2dnUVZ_g-dnZ2d(a)speakeasy.net>, jim beam
>why exactly the press would want to get their trotters in the trough on
>this one though is something i haven't figured out - the political
>agenda is ridiculous.
Bad news sells papers, good news doesn't.
From: News on 20 Feb 2010 23:39
Clive Coleman wrote:
> In message <hlpl6l$k3i$1(a)panix2.panix.com>, Scott Dorsey
> <kludge(a)panix.com> writes
>> Too many GM products steer like ocean liners... you can turn the wheel
>> 20 degrees and nothing happens, the dead band is so severe.
> If you can turn the wheel at all from straight without the front wheels
> moving the your vehicle is using "Recirculating Ball", this system
> normally leaves a dead zone in the middle, but some car makers like it
> as it makes the steering geometry simpler, especially when setting up
> Ackermanns principle. Here in the UK, only Rack and Pinion is used, as
> it's the only steering system precise enough (no play) to get through
> the MOT.
Too bad MOT doesn't judge the nut behind the wheel to the same standard.