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jolene
Newbie
Joined: 08 Jun 2004
Posts: 15
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Tue Jun 22, 2004 12:11 pm |
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I had my front bearings changed by a garage and got the car back with the steering wheel slightly off center. Then I discovered that the wheel alingment is out too. But I don't know the toe -in (or is it toe-out in the R19?) I suppose if I know the measurement I can align the wheels myself, using an extendable rod or something, touching the wheel rims?
Thank you |
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JB
Mr Quoter-vator
Joined: 16 Feb 2004
Posts: 7405
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Tue Jun 22, 2004 12:40 pm |
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as far as i know they should be parallel...otherwise the tyres wear will crapply and you'll have poor handling...
take it for trackin |
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Chris H
Forum Moderator
Joined: 02 Mar 2004
Posts: 19978
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Tue Jun 22, 2004 1:39 pm |
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JB
Mr Quoter-vator
Joined: 16 Feb 2004
Posts: 7405
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Tue Jun 22, 2004 2:56 pm |
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really?...do garages take this into account when tracking? |
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Chet T16
Retroholic
Joined: 12 Feb 2004
Posts: 5685
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Wed Jun 23, 2004 3:47 am |
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They should do. If they don't i'd never bring a car to the place again |
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JB
Mr Quoter-vator
Joined: 16 Feb 2004
Posts: 7405
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Wed Jun 23, 2004 4:22 am |
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r all vehicles different or is 1 degree toe out a standard?
cos ive never seen them consulting a book |
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Chet T16
Retroholic
Joined: 12 Feb 2004
Posts: 5685
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Wed Jun 23, 2004 5:55 am |
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They're all different. We've one of those big autodata books in the workshop with the figures in it |
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JB
Mr Quoter-vator
Joined: 16 Feb 2004
Posts: 7405
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Wed Jun 23, 2004 5:59 am |
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well i never.....
so why toe out 1 degree....1 degree aint exactly much on a big ship...why is this better than parallel? |
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Chet T16
Retroholic
Joined: 12 Feb 2004
Posts: 5685
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Wed Jun 23, 2004 6:02 am |
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I think it has an effect on the self centering of the steering. Not sure at all so don't take that as right! |
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JB
Mr Quoter-vator
Joined: 16 Feb 2004
Posts: 7405
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Wed Jun 23, 2004 6:07 am |
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i can see the logic in that |
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Chris H
Forum Moderator
Joined: 02 Mar 2004
Posts: 19978
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Wed Jun 23, 2004 7:55 am |
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The castor angle (you can include KPI in this) is what creates the self centring.
The toe angle does affect the weight of the steerign and the tramlining.
1 degree of toe out will make the wheels roughly parrellel on the move as the driving forvce with try to throw the leading edges towards the centre of the car. |
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jolene
Newbie
Joined: 08 Jun 2004
Posts: 15
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Thu Jun 24, 2004 8:29 am |
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hmmm...I think the last time I did a toe in adjustment (on another car), I measured the distance between the back of the front wheel rims, which had to be x mm more than the distance between the same measurement at the front of the rims. For example if the back measured 1m 40,22, then the front should measure 1m 40,20 or something like that. So what I wanted to know is (in the case of the R19) how many mm wider should the distance between the wheel rims be at the front be , compared to the back (I dont know how to measure 1ยบ)
Thank you. |
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jolene
Newbie
Joined: 08 Jun 2004
Posts: 15
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Thu Jun 24, 2004 8:30 am |
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hmmm...I think the last time I did a toe in adjustment (on another car), I measured the distance between the back of the front wheel rims, which had to be x mm more than the distance between the same measurement at the front of the rims. For example if the back measured 1m 40,22, then the front should measure 1m 40,20 or something like that. So what I wanted to know is (in the case of the R19) how many mm wider should the distance between the wheel rims be at the front be , compared to the back (I dont know how to measure 1ยบ)
Thank you. |
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JB
Mr Quoter-vator
Joined: 16 Feb 2004
Posts: 7405
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Thu Jun 24, 2004 8:45 am |
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simple trig...
on a 14" DIA. the difference frt to back would be in
= 6.2mm |
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jolene
Newbie
Joined: 08 Jun 2004
Posts: 15
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Thu Jun 24, 2004 9:36 am |
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So, in this case the 3:15pm position on the wheel rims should be 6,2mm wider than then the 2:45pm position? Is it very critical to be exactly 6,2 mm? I will probably try the old vacuum cleaner tubes...
Thank you. |
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JB
Mr Quoter-vator
Joined: 16 Feb 2004
Posts: 7405
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Thu Jun 24, 2004 9:51 am |
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well if ur doin it with vacuum cleaner pipes i dont think accuracy comes into the issue...just get it as close as u can...or just take it to a garage for tracking and ask for 1.0deg toe out.
6.2mm wider at the frt of the wheel/car for toe out |
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BenR
Level 5 User
Joined: 18 Jun 2004
Posts: 114
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Sat Jun 26, 2004 6:22 pm |
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The problem with measuring the front and back distances is hat you dont know which wheel has more toe than the other, since your measuring the total toe side ot side.
negative ET's tend to have toe out, and positive ET's have toe in. It all affects the way the wheels are pulled straight when moving. |
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JB
Mr Quoter-vator
Joined: 16 Feb 2004
Posts: 7405
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Sun Jun 27, 2004 2:21 am |
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BenR
Level 5 User
Joined: 18 Jun 2004
Posts: 114
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Sun Jun 27, 2004 2:01 pm |
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JB
Mr Quoter-vator
Joined: 16 Feb 2004
Posts: 7405
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Sun Jun 27, 2004 2:12 pm |
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does et stand for somethign? |
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Chris H
Forum Moderator
Joined: 02 Mar 2004
Posts: 19978
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Mon Jun 28, 2004 3:44 am |
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yes it does Jonny and thats what I said before you Ben just in less detail. |
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