Brakes unable to stop runaway Lexus in California?
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From: hls on 18 Nov 2009 20:20 "Vic Smith" <thismailautodeleted(a)comcast.net> wrote in message > A clutch on a FWD always means pulling the halfshafts and doing an > alignment afterwards. > Might have to pull a subframe, depending on the car. > Not nearly as easy as doing a RWD clutch. > > --Vic I disagree. It isnt automatic that you must realign.. Sometimes you can remove the halfshafts from the tranny without disturbing the alignment. In some cases you might have to remove a subframe which does cause more work. But I agree that a RWD doesnt normally entail any of these issues, and is normally easier.
From: Vic Smith on 18 Nov 2009 20:28 On Wed, 18 Nov 2009 19:20:48 -0600, "hls" <hls(a)nospam.nix> wrote: > >"Vic Smith" <thismailautodeleted(a)comcast.net> wrote in message >> A clutch on a FWD always means pulling the halfshafts and doing an >> alignment afterwards. >> Might have to pull a subframe, depending on the car. >> Not nearly as easy as doing a RWD clutch. >> >> --Vic > >I disagree. It isnt automatic that you must realign.. Sometimes you >can remove the halfshafts from the tranny without disturbing the alignment. > The kid says you can sometimes pop the lowers and it may or may not affect alignment. The only way to know is put it on the machine and do the measurements. That's a minimum. He may be wrong, but since he does suspensions all day every day I tend to trust him. I even forgave him for dropping that halfshaft when he was 17. --Vic
From: hls on 18 Nov 2009 20:41 "Vic Smith" <thismailautodeleted(a)comcast.net> wrote in message news:6e79g5dk6a9rjp73pg6b9inahrd32u9t3u(a)4ax.com... > On Wed, 18 Nov 2009 19:20:48 -0600, "hls" <hls(a)nospam.nix> wrote: > >> >>"Vic Smith" <thismailautodeleted(a)comcast.net> wrote in message >>> A clutch on a FWD always means pulling the halfshafts and doing an >>> alignment afterwards. >>> Might have to pull a subframe, depending on the car. >>> Not nearly as easy as doing a RWD clutch. >>> >>> --Vic >> >>I disagree. It isnt automatic that you must realign.. Sometimes you >>can remove the halfshafts from the tranny without disturbing the >>alignment. >> > The kid says you can sometimes pop the lowers and it may or may not > affect alignment. The only way to know is put it on the machine and > do the measurements. That's a minimum. > He may be wrong, but since he does suspensions all day every day I > tend to trust him. > I even forgave him for dropping that halfshaft when he was 17. > > --Vic It happens. If you drop the lowers and pull the halfshafts, it is not likely that you have disturbed the symmetry. In many cases if you replace the ball joints you do not disturb the symmetry... BUT, the symmetry can be disturbed by wear, by rough treatment, etc so it is wise to check it. People probably should check their alignment more than they do, even without mechanical interventions.
From: clare on 18 Nov 2009 21:12 On Tue, 17 Nov 2009 15:14:11 -1000, dsi1 <dsi1(a)humuhumunukunukuapuapa.org> wrote: >clare(a)snyder.on.ca wrote: >>> >> Disk brake calipers contain more fluid than drum brake cyls, and >> require more fluid movement at higher pressure to provide the same >> braking force, generally speaking. Therefore, disk brakes derive a >> much grater advantage from power assist than servo type (like Bendix) >> drum brakes. It allows you to get good braking pressure without >> extreme pedal travel. > >I'm familiar with basic hydraulics but the fact remains that brakes used >the same system of vacuum assist before disks became popular. It doesn't >matter which system gets more benefit from power assist because the >truth is that both drums and disks pretty much suck without it. > >> >> Non Servo drum brakes like the old Chrysler Center Plane, girling >> twinleading shoe, and GM Huck brake systems would have benefited >> highly from power assist as well -and GENERALLY required either more >> pedal pressure or longer pedal travel than the more common, recently, >> Bendix style "self energizing" or "servo" brakes. Big enough self energizing drum brakes do NOT NEED power assist. Disk brakes DO - they are by nature NOT self energizing, and require a lot of brake force. Not many disk brake cars, historically, without power assist. And most Mopars built that way in the seventies have had major front end damage at some time in their life. Used to be impossible to find front end sheetmetal at the wreckers for them.
From: Nate Nagel on 18 Nov 2009 21:16
Vic Smith wrote: > On Wed, 18 Nov 2009 19:20:48 -0600, "hls" <hls(a)nospam.nix> wrote: > >> "Vic Smith" <thismailautodeleted(a)comcast.net> wrote in message >>> A clutch on a FWD always means pulling the halfshafts and doing an >>> alignment afterwards. >>> Might have to pull a subframe, depending on the car. >>> Not nearly as easy as doing a RWD clutch. >>> >>> --Vic >> I disagree. It isnt automatic that you must realign.. Sometimes you >> can remove the halfshafts from the tranny without disturbing the alignment. >> > The kid says you can sometimes pop the lowers and it may or may not > affect alignment. The only way to know is put it on the machine and > do the measurements. That's a minimum. > He may be wrong, but since he does suspensions all day every day I > tend to trust him. > I even forgave him for dropping that halfshaft when he was 17. > > --Vic VW you don't need to align, and in fact you can always get the pass side shaft out without popping the lower ball joint. *sometimes* you need to do the driver's side but I've never had to. If you are only dropping the trans you don't even need to remove the shafts, just unbolt them from the trans. nate -- replace "roosters" with "cox" to reply. http://members.cox.net/njnagel |