pulling to the right
07-22-2018, 09:28 PM
#21
Race Director
@ arbee - The castor split on the above car is two tenths of a degree, and this is pretty typical. Its time for you to stop punching yourself in the *****.
Last edited by PatternDayTrader; 07-22-2018 at 09:33 PM.
07-22-2018, 09:49 PM
#22
Melting Slicks
So how do you explain my link that stipulates a C4 caster spec as 5-7 degrees. We are on a Corvette forum are we not? You really out to take up politics - you would be good!
07-22-2018, 09:54 PM
#23
Race Director
This thread has turned into what I was talking about earlier. Some people just don't understand these measurments. I actually think you do though. You just don't want to admit that your initial statement was totally wrong, because you are guessing.
Last edited by PatternDayTrader; 07-22-2018 at 09:58 PM.
07-22-2018, 10:02 PM
#24
Melting Slicks
The spec for the total measurement may very well be between 5 and 7 degrees. The split between right and left will be in tenths of a degree, unless you want the car to pull.
This thread has turned into what I was talking about earlier. Some people just don't understand these measurments. I actually think you do though. You just don't want to admit that your initial statement was totally wrong, because you are guessing.
This thread has turned into what I was talking about earlier. Some people just don't understand these measurments. I actually think you do though. You just don't want to admit that your initial statement was totally wrong, because you are guessing.
I go only by what is written and these are your words: …"will be in tenths of a degree, not full degrees".
07-22-2018, 10:05 PM
#25
Race Director
07-22-2018, 10:21 PM
#26
Melting Slicks
In post #14, you made a point of highlighting one of my statements regarding steering axis being positive offset by a few degrees. You then went on to state that I was one of the people who didn't understand. My statement was entirely correct(as proven by my link) Do you expect people to not respond to such statements?
07-22-2018, 10:27 PM
#27
Race Director
In post #14, you made a point of highlighting one of my statements regarding steering axis being positive offset by a few degrees. You then went on to state that I was one of the people who didn't understand. My statement was entirely correct(as proven by my link) Do you expect people to not respond to such statements?
I now realize you had no idea what a castor split is, or how and why it causes a car to pull.
07-22-2018, 10:38 PM
#28
Melting Slicks
You are one condescending individual aren't you? I most definitely do understand what "castor split" is. However
this "split" was never mentioned until I proved you wrong with my link. Every one of your posts referred to "castor"(by the way, it is caster, not castor) until you introduced a new variable to suit your narrative. Like I said, run for office.
07-22-2018, 10:47 PM
#29
Race Director
You are one condescending individual aren't you? I most definitely do understand what "castor split" is. However
this "split" was never mentioned until I proved you wrong with my link. Every one of your posts referred to "castor"(by the way, it is caster, not castor) until you introduced a new variable to suit your narrative. Like I said, run for office.
this "split" was never mentioned until I proved you wrong with my link. Every one of your posts referred to "castor"(by the way, it is caster, not castor) until you introduced a new variable to suit your narrative. Like I said, run for office.
Last edited by PatternDayTrader; 07-22-2018 at 10:51 PM.
07-22-2018, 10:52 PM
#30
Melting Slicks
I pointed out castor split in post 16 which was well before your link. In fact that's all I've referenced since that is what is directly related to the OPs problem. You pointing out the spec in degrees is about as useful as pointing out the ring and pinion backlash measurement.
07-22-2018, 10:56 PM
#31
Race Director
That's right arbee. I win because I know what I'm talking about, and you are just sort of guessing.
07-23-2018, 09:26 AM
#32
Le Mans Master
So going back to the OP, I see multiple concerns. First, replacing a steering rack shouldn't cause a pull. The only alignment spec that should change is toe, and toe can't cause a pull. If your toe is off, it can cause the steering wheel to be off center when the wheels are pointing straight, but it won't pull. So to replace the rack, they should not have had to mess with the caster and camber (shims). I agree with PatternDayTrader that we need to see the alignment specs on the OP's car. Caster split is by far the most likely culprit here. A big split on camber might cause a pull, but I doubt that even a bad alignment tech would let camber get that far out of whack (I hope!).
Also, the last sentence of the OP said that the tech indicated it might the brake calipers (sticking, I assume?). Again, I can't think of how that condition could have been caused by a steering rack replacement. The quick way to check that is to jack the front up and compare the drag of each front wheel free spinning - they should each have some but be easily "hand spun" and they should both be similar. You could also drive the car straight for a while, come to a stop using as little braking as possible, and quickly put an IR thermometer on each disk (through the wheel from behind).
Also, the last sentence of the OP said that the tech indicated it might the brake calipers (sticking, I assume?). Again, I can't think of how that condition could have been caused by a steering rack replacement. The quick way to check that is to jack the front up and compare the drag of each front wheel free spinning - they should each have some but be easily "hand spun" and they should both be similar. You could also drive the car straight for a while, come to a stop using as little braking as possible, and quickly put an IR thermometer on each disk (through the wheel from behind).
07-24-2018, 11:38 AM
#33
Safety Car
Just had a re built rack & pinion installed. then got front end alignment, went out on the road and noticed it pulled to the right ( did that before also but bigger problem at the time was steering and vibrations )
took the car back to Kaughman Tires they re did the entire alignment and results the same
the car has new tires from 1 year ago. The car now steers tight with the new rack & no vibrations but pulls to the right slightly
What to do >? Older gent at Kaufman's owns a C-5 he said possible break calipers
took the car back to Kaughman Tires they re did the entire alignment and results the same
the car has new tires from 1 year ago. The car now steers tight with the new rack & no vibrations but pulls to the right slightly
What to do >? Older gent at Kaufman's owns a C-5 he said possible break calipers
Normally, for a street alignment, a bit
Are the leaf spring end links original? Has ride height been changed? If the end links have been changed by someone who doesn't understand Corvettes, they can get the corner weights way off and jack weight into the thing. That can also cause a pull to one side. Nascar guys call it "wedge" and in indycars, there is an adjuster in the cockpit called a "weight jacker" that usually is only used on oval tracks.
The worst cases I've seen on corvettes is when a shop (unfamiliar with corvettes) changes just one end link, and tightens it all the way. A visual inspection of the end link bolts might be called for. Or get it on some scales and adjust the corner weights.
The worst cases I've seen on corvettes is when a shop (unfamiliar with corvettes) changes just one end link, and tightens it all the way. A visual inspection of the end link bolts might be called for. Or get it on some scales and adjust the corner weights.
Last edited by C6_Racer_X; 07-24-2018 at 05:50 PM. Reason: corrected to show pulls toward lower caster.
07-24-2018, 01:38 PM
#37
Melting Slicks
You addressed me first with a "scolding" which I won't take sitting down. This is very simple. The thread was dead and near the bottom of the page. The OP did not update it but someone decided to revive it. Then you decided the need to make your comment and now you are questioning my "attitude"?
07-24-2018, 02:01 PM
#38
Melting Slicks
You addressed me first with a "scolding" which I won't take sitting down. This is very simple. The thread was dead and near the bottom of the page. The OP did not update it but someone decided to revive it. Then you decided the need to make your comment and now you are questioning my "attitude"?
Attitude....yes you go right at people, somethings get lost in the written word.
Have a good day (thats nice, see
)
07-24-2018, 02:25 PM
#40
Race Director
I hope the food fight is over. Did you post the after alignment numbers? what was the caster and cross caster numbers on yours, @BillDurant?
Normally, for a street alignment, a bit more caster on left front is used to compensate for road "crown." If your caster is higher on the right to side, it will pull right. How much pull depends on how much right side caster is greater than left side.
Normally, for a street alignment, a bit more caster on left front is used to compensate for road "crown." If your caster is higher on the right to side, it will pull right. How much pull depends on how much right side caster is greater than left side.
Last edited by PatternDayTrader; 07-24-2018 at 02:27 PM.