Home |
Search |
Today's Posts |
|
Home Repair (alt.home.repair) For all homeowners and DIYers with many experienced tradesmen. Solve your toughest home fix-it problems. |
Reply |
|
LinkBack | Thread Tools | Display Modes |
#121
Posted to alt.home.repair
|
|||
|
|||
Outside edge of front tires stairstepping
On Sun, 9 Jul 2017 19:22:43 -0700 (PDT), wrote:
cl...: Uhh, got that backwards on the camber and caster: Car will pull toward side with LEAST positive Caster, or toward side with least NEGATIVE(most upright wheel) camber. Negative camber is NOT upright. Negative camber is top in. Least negative is the same as most positive. I know what I'm talking about - I've not only worked the trade, I've taught it. |
#122
Posted to alt.home.repair,rec.autos.tech
|
|||
|
|||
Outside edge of front tires stairstepping
On Sun, 09 Jul 2017 19:28:37 -0700, Bill Vanek
wrote: On Sun, 09 Jul 2017 21:30:48 -0400, wrote: A car will pull to the side of the most negative camber, or the most positive caster. Brain fart?... If that's what I wrote - yes. Top out is positive CAMBER - and the car will pull to the highest positive CAMBER or least negative.. Caster is opposite. Positive CASTER is top back and it will pull to the side with the least positive, or most negative. |
#124
Posted to alt.home.repair
|
|||
|
|||
Outside edge of front tires stairstepping
On 07/10/2017 12:25 AM, wrote:
On Sun, 9 Jul 2017 19:22:43 -0700 (PDT), wrote: cl...: Uhh, got that backwards on the camber and caster: Car will pull toward side with LEAST positive Caster, or toward side with least NEGATIVE(most upright wheel) camber. Negative camber is NOT upright. Negative camber is top in. Least negative is the same as most positive. I know what I'm talking about - I've not only worked the trade, I've taught it. "He who can, does; he who cannot, teaches." |
#125
Posted to alt.home.repair,rec.autos.tech
|
|||
|
|||
Outside edge of front tires stairstepping
On Thu, 6 Jul 2017 05:15:10 +0000 (UTC), Chaya Eve
wrote: Is it normal for the outside edges of the front tires to be stairstepping on the outer inch or two only? By stairstepping, I mean that you can't see the wear all that much but if you rub your hand over the tread in one direction, you can feel a lip on each side swipe tread. If you run your hand over in the other direction, you don't feel it. You only feel it if you run your hand from back to front on the outside tread of the two front tires. If you do the same with the rear tires or on the inner edge of the front tires, you don't feel any 'stairstepping". The tires are about a year old and are wearing the front outside edges only. One hundred and 5 posts?! Talk about beating a dead horse into powder. -- It's difficult to make predictions, especially about the future. |
#126
Posted to alt.home.repair
|
|||
|
|||
Outside edge of front tires stairstepping
On Mon, 10 Jul 2017 04:52:56 -0400, Trumpster
wrote: On 07/10/2017 12:25 AM, wrote: On Sun, 9 Jul 2017 19:22:43 -0700 (PDT), wrote: cl...: Uhh, got that backwards on the camber and caster: Car will pull toward side with LEAST positive Caster, or toward side with least NEGATIVE(most upright wheel) camber. Negative camber is NOT upright. Negative camber is top in. Least negative is the same as most positive. I know what I'm talking about - I've not only worked the trade, I've taught it. "He who can, does; he who cannot, teaches." Bull****. I did it for a lot longer than I taught it, and the teaching was not at the end of my automotive career. Like a masochist I went back to the trade ---. At least my years of teaching made me eligible for coverage under OTIP's retired teacher plan - so I have good health insurance at a reasonable price. (Yes, we still buy health insurance in Canada!!!!) |
#127
Posted to alt.home.repair,rec.autos.tech
|
|||
|
|||
Outside edge of front tires stairstepping
In rec.autos.tech, on Sun, 9 Jul 2017 13:03:26 +0000 (UTC), Chaya Eve
wrote: On Sun, 9 Jul 2017 19:56:29 +1000, Xeno wrote: The car steering geometry specs will have been designed to make your car safe to drive in all circumstances. The specs are almost always a *range* so there's room to be at one end or the other, isn't there? I think the answer is no, not always. If caster has a range of 2 to 4 and camber 5 to 7, that doesn't mean that you can put caster at 2 and camber at 7 and everything is even moderately acceptable, aiui. The range refers to one value at a time, that if the caster has a range of 2 to 4 and you have it set at 1.9, that's bad in itself, regardless of what the other values are. (Maybe in some special situations a skilled aligner can safely go outside the range, I don't know one way or the other, but my point is made in the paragraph above, which I think you think would be acceptable.) Alignment is a compromise and any particular setting of camber, for example, may well limit the acceptable setting of caster to a smaller range than the range given in the spec. Competent pros know this and allow for it. Corrections? I hope you don't intend to tell the shop what settings you want, and will instead tell them your problem** and what you think woudl help, without ordering them to do that. **I'm not sure why some feathering is worth all this trouble in the first place. Will your tires wear out sooner? How much sooner? How much is that in dollars? |
#128
Posted to alt.home.repair
|
|||
|
|||
Outside edge of front tires stairstepping
Micky wrote: "If caster has a range of 2 to 4 and camber 5 to 7, that doesn't mean
that you can put caster at 2 and camber at 7 and everything is even moderately acceptable, aiui. The range refers to one value at a time, that if the caster has a range of 2 to 4 and you have it set at 1.9, that's bad in itself, regardless of what the other values are. (Maybe in some special situations a skilled aligner can safely go outside the range, I don't know one way or the other, but my point is made in the paragraph above, which I think you think would be acceptable.)" If caster has a range of 2 to 4 degrees then I would aim for the middle of that range, just as I would with the other specs. In this case, 3degrees. I prefer a little more centering force, so I'd set a little on the high side, but still in range. 3.2 or so. 5 to 7 degrees camber??? Those tires'd be practically laying on their sides! lmao. Most cars have half to one degree of camber either way. Say front to specs are -0.05 to +0.10. 0.03 deg. would be the middle of that range. NOT zero, as I see too many techs aiming for. You want static toe, which should result in 0deg toe - straight ahead - when vehicle is moving. Unless something is worn or bent. |
#129
Posted to alt.home.repair
|
|||
|
|||
Outside edge of front tires stairstepping
Front TOE that is. Damn!
|
#130
Posted to alt.home.repair,rec.autos.tech
|
|||
|
|||
Outside edge of front tires stairstepping
On 13/07/2017 1:03 PM, micky wrote:
In rec.autos.tech, on Sun, 9 Jul 2017 13:03:26 +0000 (UTC), Chaya Eve wrote: On Sun, 9 Jul 2017 19:56:29 +1000, Xeno wrote: The car steering geometry specs will have been designed to make your car safe to drive in all circumstances. The specs are almost always a *range* so there's room to be at one end or the other, isn't there? I think the answer is no, not always. If caster has a range of 2 to 4 and camber 5 to 7, that doesn't mean that you can put caster at 2 and camber at 7 and everything is even moderately acceptable, aiui. Camber is a tyre wearing angle and at 7 degrees would definitely lead to tyres wearing on one side. For road going cars, 1 degree positive/negative would normally be the maximum you would aim for. Competition cars can go to 2 or even 3 degrees. Caster, on the other hand, has a good deal more leeway since it isn't a tyre wearing angle. It does create self aligning torque so a decrease will affect the car's ability to straighten up out of a turn. An increase, on the other hand, will make the steering heavier. Toe in changes can affect the understeering/oversteering characteristics of the car and, therefore, affect the handling. You need to have an understanding of suspension kinematics before you arbitrarily play around with manufacturers specifications. Simply lowering a car will upset the kinematics and, as a consequence, the handling. The range refers to one value at a time, that if the caster has a range of 2 to 4 and you have it set at 1.9, that's bad in itself, regardless of what the other values are. (Maybe in some special situations a skilled aligner can safely go outside the range, I don't know one way or the other, but my point is made in the paragraph above, which I think you think would be acceptable.) Alignment is a compromise and any particular setting of camber, for example, may well limit the acceptable setting of caster to a smaller range than the range given in the spec. Competent pros know this and allow for it. Corrections? I hope you don't intend to tell the shop what settings you want, and will instead tell them your problem** and what you think woudl help, without ordering them to do that. **I'm not sure why some feathering is worth all this trouble in the first place. Will your tires wear out sooner? How much sooner? How much is that in dollars? It generally isn't. It is an effect of the design compromises in steering kinematics versus vehicle usage. The type of usage described by the OP is the perfect example of an extreme that is outside the manufacturers design expectations. The penalty, if it can be called that, is increased tyre wear. It's no different to expecting increased tyre wear if every launch is like that of a jackrabbit. -- Xeno |
#131
Posted to alt.home.repair
|
|||
|
|||
Outside edge of front tires stairstepping
|
#132
Posted to alt.home.repair
|
|||
|
|||
Outside edge of front tires stairstepping
On Thu, 13 Jul 2017 13:05:08 -0400, wrote:
On Thu, 13 Jul 2017 03:00:47 -0700 (PDT), wrote: Micky wrote: "If caster has a range of 2 to 4 and camber 5 to 7, that doesn't mean that you can put caster at 2 and camber at 7 and everything is even moderately acceptable, aiui. The range refers to one value at a time, that if the caster has a range of 2 to 4 and you have it set at 1.9, that's bad in itself, regardless of what the other values are. (Maybe in some special situations a skilled aligner can safely go outside the range, I don't know one way or the other, but my point is made in the paragraph above, which I think you think would be acceptable.)" If caster has a range of 2 to 4 degrees then I would aim for the middle of that range, just as I would with the other specs. In this case, 3degrees. I prefer a little more centering force, so I'd set a little on the high side, but still in range. 3.2 or so. 5 to 7 degrees camber??? Those tires'd be practically laying on their sides! lmao. Most cars have half to one degree of camber either way. Renault R16 spec was range of 1.66 tp -3.66 My Firenza ran -1.0 Say front to specs are -0.05 to +0.10. 0.03 deg. would be the middle of that range. NOT zero, as I see too many techs aiming for. You want static toe, which should result in 0deg toe - straight ahead - when vehicle is moving. Unless something is worn or bent. neg camber causes the wheels to try yo toe out, so a bit of toe-in makes them run straight. pos camber causes them to try to toe in - so a bit of toe out makes them run straight. There ARE other factors - of course. Just thought of another possibility - is thaT MACHINE EQUIPPED WITH RACK AD PINION STEERING? Make sure the mountings are tight and the bushings are not worn? |
#133
Posted to alt.home.repair,rec.autos.tech
|
|||
|
|||
Outside edge of front tires stairstepping
On 7/9/2017 9:03 PM, Xeno wrote:
The MARKET sets the price. Do you really think, for example, that a $50,000 Rolex Watch tells better time than a $50 Timex watch? Sometimes they do - and that Timex will not be keeping time 45 years from now, while the Rolex likely will. My Dad's old Rolex Tutor was just cleaned and ovehauled - it is 65 years old A Rolex is something that will be handed down for generations. A Timex will be lucky to last for a single generation. But the Timex will be good enough, and it's replacement will cost way less than the service on the Rolex I would think. My first watch was a Timex that had stopped working for my dad. I banged it around a bit, it started working, and I used it for more than 10 years. Ever wonder why those old ads showed Timex's getting the cr*p beat out of them and still ticking. That's because that's what keeps them ticking. |
#134
Posted to alt.home.repair
|
|||
|
|||
Outside edge of front tires stairstepping
ci...@snyder wrote: " Renault R16 spec was range of 1.66 tp -3.66
My Firenza ran -1.0 " That's fairly close to the middle: -1.66deg |
#135
Posted to alt.home.repair
|
|||
|
|||
Outside edge of front tires stairstepping
thekhhhmah @ tardsRtheckmah . shortbus . edu wrote in message
... ci...@snyder wrote: " Renault R16 spec was range of 1.66 tp -3.66 My Firenza ran -1.0 " That's fairly close to the middle: -1.66deg After bragging that you can't even comprehend 2+2, and repeatedly proving that you're an imbecile, maybe you should leave the math to grownups, li'l buddy. You're too retarded. FCKWAFIA! |
#136
Posted to alt.home.repair,rec.autos.tech
|
|||
|
|||
Outside edge of front tires stairstepping
Chaya Eve posted for all of us...
The marketing genius in the L/XL/GXL lineup is that you get everyone if you break your product into three fundamental "good/better/best" ranges (where the idea is to gouge as much money as you can from the consumer). What you do is offer the item which does the job at the "L" level. Then you add a few nice-to-haves at a good price markup for the "XL level. Then you throw in highly marketed costly items for the "GXL" level. Most marketing is aimed to get people to jump to the GXL level, while most consumers will resist the extremely high price, but they don't want the "cheap stuff" which is why you have to have a "good/better/best" range. In the matter of car lines the manufacturers have turned the option list into "lines". In other words if you want basic-no options and want to add collision avoidance you must buy a higher line, if you want a moon roof then you must buy the higher line. Of course they always stick in unwanted items in the higher lines; like premium audio, heated seats. You can't delete them. I knew a guy whom worked at a major tire manufacturer in quality control. After GM started to reject boxcars of tires, they started loading the exceptional spec tires at the doors of the boxcars after loading the usual spec'd tires in first. The GM inspectors would only check the first out lot then move on. Your marketing education is just a low level of psychology. You are taking this thread away from the excellent advice of many people who have done this for many years. Where did you get your education and where do you work? -- Tekkie |
#137
Posted to alt.home.repair,rec.autos.tech
|
|||
|
|||
Outside edge of front tires stairstepping
|
#138
Posted to alt.home.repair,rec.autos.tech
|
|||
|
|||
Outside edge of front tires stairstepping
On Thu, 13 Jul 2017 21:58:57 -0700, Bob F wrote:
On 7/9/2017 9:03 PM, Xeno wrote: The MARKET sets the price. Do you really think, for example, that a $50,000 Rolex Watch tells better time than a $50 Timex watch? Sometimes they do - and that Timex will not be keeping time 45 years from now, while the Rolex likely will. My Dad's old Rolex Tutor was just cleaned and ovehauled - it is 65 years old A Rolex is something that will be handed down for generations. A Timex will be lucky to last for a single generation. But the Timex will be good enough, and it's replacement will cost way less than the service on the Rolex I would think. My first watch was a Timex that had stopped working for my dad. I banged it around a bit, it started working, and I used it for more than 10 years. Ever wonder why those old ads showed Timex's getting the cr*p beat out of them and still ticking. That's because that's what keeps them ticking. A couple of kids were out playing ball, and one of them had a Timex that had quit. He it it into the infeild with the bat, and it worked again - al least for a while. My older brother can't wear a cheap watch. A timex would quit in a week. The rolex worked perfectly. He can now wear some cheap quartz watches - but cheap mechanicals were no-go. |
#139
Posted to alt.home.repair
|
|||
|
|||
Outside edge of front tires stairstepping
On Fri, 14 Jul 2017 03:05:29 -0700 (PDT),
wrote: ci...@snyder wrote: " Renault R16 spec was range of 1.66 tp -3.66 My Firenza ran -1.0 " That's fairly close to the middle: -1.66deg The Firenza isn't an R16 The Firenza spec was -1 Rhe renault would be in spec at -3.66 - as long as both wheels were the same. |
#140
Posted to alt.home.repair,rec.autos.tech
|
|||
|
|||
Outside edge of front tires stairstepping
On Fri, 14 Jul 2017 17:17:42 -0400, Tekkie®
wrote: posted for all of us... On Sun, 9 Jul 2017 17:34:56 +0000 (UTC), Chaya Eve wrote: On Sun, 9 Jul 2017 13:35:42 +0000 (UTC), Chaya Eve wrote: They always tell us to have a "good/better/best" lineup, because people *want* to pay more for "better" stuff, but at the same time they teach us about 'economies of scale' where you slightly differentiate the product (e.g., gold-plated trim) so that people will *think* that it's a better product (even though it's the same product). I realize I said economies of "scale" when I meant economies of "scope". The marketing genius in the L/XL/GXL lineup is that you get everyone if you break your product into three fundamental "good/better/best" ranges (where the idea is to gouge as much money as you can from the consumer). What you do is offer the item which does the job at the "L" level. Then you add a few nice-to-haves at a good price markup for the "XL level. Then you throw in highly marketed costly items for the "GXL" level. Most marketing is aimed to get people to jump to the GXL level, while most consumers will resist the extremely high price, but they don't want the "cheap stuff" which is why you have to have a "good/better/best" range. They "think" they're getting a good value by going for the "better" because they don't want to "think" much when they buy. They just want to associate dollars to quality, so you make that association for them with the good/better/best L/XL/GXL pricing tier. You give the educated consumer a lot less credit than they are due. The "educated consumer" doesn't need a degree in marketing. Particularly in today's automotive market, where there really are very few "options" if you want, say, a sunroof on a car, you need to buy a minimum trim level that is NOT base. And if you want, say, the high end infortainment system with navigation, you need to buy the next level up - which ONLY comes with the sun roof. Gone are the days, to a great extent, of ordering from the "menu" where you could order the big motor on the "stripper" and get a "sleeper" - with eithe bench or bucket seats, in any colour you wanted, with any colour pait you wanted - and any tire and wheel combo, and any gear ratio the company made, with or without Posi. You have 3 choices, Base, Medium, and high content - or L, GL, or GLX You can't make the L-to-XL pricing jump too high, but you can get away with making the XL-to-GXL price jump very high (because you're playing on consumer emotions). No, you are playing on consumer's WANTS. They WANT the sunroof and the navigation system and high end audio - so they buy the GLX Everyone wins when you market it right. * the cost-conscious consumer thinks they got good product at a good price. * the value-conscious consumer thinks they got a better value at not too much of a bump in price * the status-conscious consumer pays through the nose for status and gets it if the marketing department can maintain the status feelings * the company makes out because they sold essentially the same product to three different types of customers, making the most profit on the third type but still making profits on the first and second type due to economies of scale (volume) and economies of scope (differentiation). * the marketing department wins awards and bonuses for increasing the perceived value of the GXL "best" model, even though it's essentially the same item as the other two (only it has special options and gold trim and free coffee and free car washings, or whatever makes people feel good). No, that's why you have a chevy, a cadillac, a BMW and a Mercedes. THAT is where pride and emotion make people do stupid things. Mer bought homself a loaded Kia or Hyundai for less money than a "base" BMW or Merc or Caddy, that will cost him WAY less in maintenance and repairs, where he will get WAY more for it at resale, in percentage terms than either of the options, or a lower contented car - meaning he got VALUE for for his money. REal value, not based on "marketing BS" I'm sorry Clare, I just wrote a post with the same points as yours. I didn't get down to this level prior to posting. It's getting to be too much with her conflating issues. Time to plonk the idiot. |
#141
Posted to alt.home.repair
|
|||
|
|||
Outside edge of front tires stairstepping
"The Firenza isn't an R16 The Firenza spec was -1
Rhe renault would be in spec at -3.66 - as long as both wheels were the same. " Clarify? |
#142
Posted to alt.home.repair
|
|||
|
|||
Outside edge of front tires stairstepping
|
#143
Posted to alt.home.repair
|
|||
|
|||
Outside edge of front tires stairstepping
On Fri, 14 Jul 2017 18:27:41 -0700 (PDT),
wrote: - show quoted text - "Simple. My Vauxhaull Firenza was apec'd at -1 degree camber. I think it was actually closer to -1.5 Had NO tire wear issues with the oversized tires installed on it for over 7 years "A Renault R16 was specc'd at +1 to -3.66 If it was set at +1 on trhe left and -3.66 on the right it would "technically" be within spec, but would be turning very tight tight turns as soon as you took your hands off the wheel. Properly set up at about -2 on each side, it would corner like a fiend, carving corners like a knife, and holding on to the road as if it had claws. " And being 'in spec', a lot of alignment places would send the car out the door that way, and if the customer came back, they'd say 'It's in spec' even though the car was doing f'king doughnuts. (facepalm!) Sorry, for some reason while reading through your earlier post I confused your car with the Renault. What is the camber range on your Firenza? |
#144
Posted to alt.home.repair,rec.autos.tech
|
|||
|
|||
Outside edge of front tires stairstepping
On 07/14/2017 03:14 PM, Tekkie® wrote:
I knew a guy whom worked at a major tire manufacturer in quality control. After GM started to reject boxcars of tires, they started loading the exceptional spec tires at the doors of the boxcars after loading the usual spec'd tires in first. The GM inspectors would only check the first out lot then move on. When I took statistics years ago it was geared toward engineers. The major question was how many samples do you have to examine to ensure the batch is only N% crap. N would be provided by sales and marketing after they determined the economics of repairing or replacing crap versus going for as close to 100% quality product as you could. |
#145
Posted to alt.home.repair
|
|||
|
|||
Outside edge of front tires stairstepping
|
#146
Posted to alt.home.repair
|
|||
|
|||
Outside edge of front tires stairstepping
" IIRC it was + 1/2 to - 1 1/2 - not sure, but I believe we had it set
at -1. It's been gone for a LONG time now. I never owned an R16, but rallyed an R12 for 3 punishing seasons. " Just for reference -3/4degrees would have been the middle of that camber range. |
#147
Posted to alt.home.repair
|
|||
|
|||
Outside edge of front tires stairstepping
thekma @ retard.shortbus.com wrote in message
... " IIRC it was + 1/2 to - 1 1/2 - not sure, but I believe we had it set at -1. It's been gone for a LONG time now. I never owned an R16, but rallyed an R12 for 3 punishing seasons. " Just for reference -3/4degrees would have been the middle of that camber range. Just for reference, you got it wrong again, dumb****. After bragging that you can't even comprehend 2+2, maybe you should leave the math to grownups, li'l buddy. You're too stupid and retarded. FCKWAFIA. |
#148
Posted to alt.home.repair
|
|||
|
|||
Outside edge of front tires stairstepping
On Sat, 15 Jul 2017 03:09:47 -0700 (PDT),
wrote: " IIRC it was + 1/2 to - 1 1/2 - not sure, but I believe we had it set at -1. It's been gone for a LONG time now. I never owned an R16, but rallyed an R12 for 3 punishing seasons. " Just for reference -3/4degrees would have been the middle of that camber range. Wh said the middle is where I would want it to be? But of coarse anyone can figure out that simple math. |
#149
Posted to alt.home.repair
|
|||
|
|||
Outside edge of front tires stairstepping
wrote in message
... On Sat, 15 Jul 2017 03:09:47 -0700 (PDT), wrote: " IIRC it was + 1/2 to - 1 1/2 - not sure, but I believe we had it set at -1. It's been gone for a LONG time now. I never owned an R16, but rallyed an R12 for 3 punishing seasons. " Just for reference -3/4degrees would have been the middle of that camber range. Wh said the middle is where I would want it to be? But of coarse anyone can figure out that simple math. Anyone other than Theckmah the village idiot, of course. |
#150
Posted to alt.home.repair
|
|||
|
|||
Outside edge of front tires stairstepping
"Wh said the middle is where I would want it to be? But of coarse
anyone can figure out that simple math. " Where you want it, vs factory specs, might not be optimal for the way it was designed to handle. But then again, I like my caster a tad on the high side, if a body/align shop is willing to perform the surgery on a modern unibody to get it there. |
#151
Posted to alt.home.repair
|
|||
|
|||
Outside edge of front tires stairstepping
|
#152
Posted to alt.home.repair
|
|||
|
|||
Outside edge of front tires stairstepping
cl...@snyder:
Camber in/of itself is not a centering parameter. Caster and kingpin(SAI) are. |
#153
Posted to alt.home.repair
|
|||
|
|||
Outside edge of front tires stairstepping
|
Reply |
Thread Tools | Search this Thread |
Display Modes | |
|
|
Similar Threads | ||||
Thread | Forum | |||
I used rake edge instead of drip edge | Home Repair | |||
How to edge stone flooring at the wall's edge? | Home Repair | |||
Bad tires---front or back | Home Repair | |||
replacing front edge of laminate countertops? | Home Repair | |||
Rubber strip for front edge of bath | UK diy |