A good digital oscilloscope?
in [Design]
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From: Joerg on 16 Dec 2009 11:08 Jim Thompson wrote: > On Wed, 16 Dec 2009 06:55:48 -0800, Joerg <invalid(a)invalid.invalid> > wrote: > >> Michael A. Terrell wrote: >>> Joerg wrote: > [auto-snip] >>>> You were lucky with your automatics. I know numerous people who have >>>> either given up cars or paid north of $2k after the automatic >>>> transmission croaked. My old Audi (manual) is now beyond 200,000km and >>>> since the new owner and I are friends we talk a lot on the phone. The >>>> only things he ever mentioned was a repair after a motorcyclist took an >>>> illegal sidewalk ride and crashed into the front, plus after a frozen >>>> food truck backed into it. But no clutch job. >>>> >>>> What I really don't like with automatics is when you get onto ice and >>>> they shift on you. >>> >>> Then you don't know how to drive a vehicle with an automatic >>> transmission on ice. I took a survival driving course on wet ice in a >>> 1/2 ton pickup truck with an automatic while in the Army. Their logic >>> was, "If you can do it with an automatic transmission, you can do it >>> with a manual transmission." BTW, the test was conducted by the >>> National Safety Council. >>> >> True, I don't know that. A race car driver once said that an automatic >> will, in our lifetime, probably never be as good as a manual to handle >> one you get onto a surprise patch of ice. Load change reaction is so >> much faster because it ain't sloshing all this stuff around. > > Ummmmm? My Q45 has automatic _stability_ control. > > Keep it up Joerg, you're getting ALMOST as good at obfuscation as Ms > Prissy ;-) > Automatic stuff can improve the performance, of course. But only to some extent, just like ABS is no miracle cure. Shortly after I had my Mits (has largish truck brakes) someone in front of me on Hwy 50 screwed up. I hit the brakes hard but not to the lock-up points, just a smidgen before. Looked in rearview, oh s..t, big black BMW coming closer. I stop, then big black BMW leaves highway and skids along the grass on the median. I walked out there to see if he was ok. "Man, how come your Mits has a better ABS than my BMW?" ... "Ahm, well, my Mits doesn't have any ABS." -- Regards, Joerg http://www.analogconsultants.com/ "gmail" domain blocked because of excessive spam. Use another domain or send PM.
From: Martin Brown on 16 Dec 2009 12:41 Joerg wrote: > Jim Thompson wrote: >> Ummmmm? My Q45 has automatic _stability_ control. >> >> Keep it up Joerg, you're getting ALMOST as good at obfuscation as Ms >> Prissy ;-) >> > > Automatic stuff can improve the performance, of course. But only to some > extent, just like ABS is no miracle cure. Shortly after I had my Mits > (has largish truck brakes) someone in front of me on Hwy 50 screwed up. > I hit the brakes hard but not to the lock-up points, just a smidgen > before. Looked in rearview, oh s..t, big black BMW coming closer. I > stop, then big black BMW leaves highway and skids along the grass on the > median. I walked out there to see if he was ok. "Man, how come your Mits > has a better ABS than my BMW?" ... "Ahm, well, my Mits doesn't have any > ABS." If they were more or less equal weight vehicles then it would have to be down to user error (unless the prat was too close to begin with). BMWs ABS if used correctly will stop the vehicle very fast and at close to the best an experienced driver could manage. It isn't a good idea to stamp on the brakes like that unless you *really* need to stop very quickly. The guy behind might not have the same braking capacity. The only time I ever had to do it at high speed everything loose in the car ended up airborne and then at the bottom of the footwell. It will stop pretty well if you don't trigger ABS too, but it is too common for drivers to be startled by ABS feedback on the brake pedal, lift their foot pressure and then wonder why they are not slowing down. It isn't a good idea to be testing your ABS for the first time in an actual emergency - though that is what a lot of people do! Regards, Martin Brown
From: Joerg on 16 Dec 2009 13:57 Martin Brown wrote: > Joerg wrote: >> Jim Thompson wrote: > >>> Ummmmm? My Q45 has automatic _stability_ control. >>> >>> Keep it up Joerg, you're getting ALMOST as good at obfuscation as Ms >>> Prissy ;-) >>> >> >> Automatic stuff can improve the performance, of course. But only to >> some extent, just like ABS is no miracle cure. Shortly after I had my >> Mits (has largish truck brakes) someone in front of me on Hwy 50 >> screwed up. I hit the brakes hard but not to the lock-up points, just >> a smidgen before. Looked in rearview, oh s..t, big black BMW coming >> closer. I stop, then big black BMW leaves highway and skids along the >> grass on the median. I walked out there to see if he was ok. "Man, how >> come your Mits has a better ABS than my BMW?" ... "Ahm, well, my Mits >> doesn't have any ABS." > > If they were more or less equal weight vehicles then it would have to be > down to user error (unless the prat was too close to begin with). > > BMWs ABS if used correctly will stop the vehicle very fast and at close > to the best an experienced driver could manage. It isn't a good idea to > stamp on the brakes like that unless you *really* need to stop very > quickly. The guy behind might not have the same braking capacity. > He didn't quite keep the two-second distance (he should have ...) but was not tail-gating me. It was an experienced driver, the older sales guy type who spools off 50k miles or more a year. He said he practically stood on the brake and yet my rear bumper came closer and closer. > The only time I ever had to do it at high speed everything loose in the > car ended up airborne and then at the bottom of the footwell. > > It will stop pretty well if you don't trigger ABS too, but it is too > common for drivers to be startled by ABS feedback on the brake pedal, > lift their foot pressure and then wonder why they are not slowing down. > > It isn't a good idea to be testing your ABS for the first time in an > actual emergency - though that is what a lot of people do! > Worse, some folks think they can drive more aggressively now that they have ABS. -- Regards, Joerg http://www.analogconsultants.com/ "gmail" domain blocked because of excessive spam. Use another domain or send PM.
From: Jim Yanik on 16 Dec 2009 16:33 Jim Thompson <To-Email-Use-The-Envelope-Icon(a)My-Web-Site.com/Snicker> wrote in news:tqthi55bns8p7896nfrdgd756uj45au2qc(a)4ax.com: > On Wed, 16 Dec 2009 06:55:48 -0800, Joerg <invalid(a)invalid.invalid> > wrote: > >>Michael A. Terrell wrote: >>> Joerg wrote: > [auto-snip] >>>> You were lucky with your automatics. I know numerous people who >>>> have either given up cars or paid north of $2k after the automatic >>>> transmission croaked. My old Audi (manual) is now beyond 200,000km >>>> and since the new owner and I are friends we talk a lot on the >>>> phone. The only things he ever mentioned was a repair after a >>>> motorcyclist took an illegal sidewalk ride and crashed into the >>>> front, plus after a frozen food truck backed into it. But no clutch >>>> job. >>>> >>>> What I really don't like with automatics is when you get onto ice >>>> and they shift on you. >>> >>> >>> Then you don't know how to drive a vehicle with an automatic >>> transmission on ice. I took a survival driving course on wet ice in >>> a 1/2 ton pickup truck with an automatic while in the Army. Their >>> logic was, "If you can do it with an automatic transmission, you can >>> do it with a manual transmission." BTW, the test was conducted by >>> the National Safety Council. >>> >> >>True, I don't know that. A race car driver once said that an automatic >>will, in our lifetime, probably never be as good as a manual to handle >>one you get onto a surprise patch of ice. Load change reaction is so >>much faster because it ain't sloshing all this stuff around. > > Ummmmm? My Q45 has automatic _stability_ control. which COMPENSATES for the failings of the auto transmission.... and the driver. ;-) -- Jim Yanik jyanik at localnet dot com
From: Jim Thompson on 16 Dec 2009 17:01
On Wed, 16 Dec 2009 15:33:12 -0600, Jim Yanik <jyanik(a)abuse.gov> wrote: >Jim Thompson <To-Email-Use-The-Envelope-Icon(a)My-Web-Site.com/Snicker> >wrote in news:tqthi55bns8p7896nfrdgd756uj45au2qc(a)4ax.com: > >> On Wed, 16 Dec 2009 06:55:48 -0800, Joerg <invalid(a)invalid.invalid> >> wrote: >> >>>Michael A. Terrell wrote: >>>> Joerg wrote: >> [auto-snip] >>>>> You were lucky with your automatics. I know numerous people who >>>>> have either given up cars or paid north of $2k after the automatic >>>>> transmission croaked. My old Audi (manual) is now beyond 200,000km >>>>> and since the new owner and I are friends we talk a lot on the >>>>> phone. The only things he ever mentioned was a repair after a >>>>> motorcyclist took an illegal sidewalk ride and crashed into the >>>>> front, plus after a frozen food truck backed into it. But no clutch >>>>> job. >>>>> >>>>> What I really don't like with automatics is when you get onto ice >>>>> and they shift on you. >>>> >>>> >>>> Then you don't know how to drive a vehicle with an automatic >>>> transmission on ice. I took a survival driving course on wet ice in >>>> a 1/2 ton pickup truck with an automatic while in the Army. Their >>>> logic was, "If you can do it with an automatic transmission, you can >>>> do it with a manual transmission." BTW, the test was conducted by >>>> the National Safety Council. >>>> >>> >>>True, I don't know that. A race car driver once said that an automatic >>>will, in our lifetime, probably never be as good as a manual to handle >>>one you get onto a surprise patch of ice. Load change reaction is so >>>much faster because it ain't sloshing all this stuff around. >> >> Ummmmm? My Q45 has automatic _stability_ control. > >which COMPENSATES for the failings of the auto transmission.... >and the driver. >;-) It's some kind of traction control. Not quite sure how it works, but supposed to prevent Joerg's hypothetical loss of control when you hit ice. ...Jim Thompson -- | James E.Thompson, CTO | mens | | Analog Innovations, Inc. | et | | Analog/Mixed-Signal ASIC's and Discrete Systems | manus | | Phoenix, Arizona 85048 Skype: Contacts Only | | | Voice:(480)460-2350 Fax: Available upon request | Brass Rat | | E-mail Icon at http://www.analog-innovations.com | 1962 | Help save the environment! Please dispose of socialism properly! |