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Please play nicely.  No one wants to listen/read a keyboard warriors rants....

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Author Topic: Getting the WIM treatment  (Read 1951 times)

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feeutfo

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Re: Getting the WIM treatment
« Reply #15 on: 23 September 2008, 22:52:31 »

Quote
@chrisgixer
Unfortunetly i was in a meeting while your car was being calibrated.... If you can pm me the registration number i will check the report for workmanship.

Historically if the OSF castor is below spec we ignore this within reason because the low castor belays the push effect of the road crown a reduces the cars tendency to drift left.[highlight/]

Castor stagger is quite common, in fact most German calibration positions have this set into the target area.

Displacing the sub-frame is also used on some cars to "optimize" calibration positions, this may be where you garage got the idea?

This method is only used for camber optimization "not castor".... The reason for this is the position of the inner wheels accentuated lock is controlled by the transverse symmetry of the cross-member and the steering arms... Displace this then on one lock the steer position will not return fluidly and the other lock is rapid.

I would like to look at the report but fundamentally if your not happy please return to us and i will measure the chassis.

I hope this helps
Regards
Tony@ wim

Pm sent Tony, thankyou.
 So the car is now accounting for the right to left road camber? Maybe thats it, as on a flat road(rare) the car "pulls" to the right (because the road camber is not there) i did touch on that in my first post. Add to that my rear end symptoms and that may well be the issue(s)? My expectation was to set the car for a dead flat road, and all angles on both sides the same. I would then think ( ? ) the road camber alone would affect the car.
Hope that makes sense. Cheers.

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feeutfo

  • Guest
Re: Getting the WIM treatment
« Reply #16 on: 25 September 2008, 20:03:08 »

Quote
Quote
@chrisgixer
Unfortunetly i was in a meeting while your car was being calibrated.... If you can pm me the registration number i will check the report for workmanship.

Historically if the OSF castor is below spec we ignore this within reason because the low castor belays the push effect of the road crown a reduces the cars tendency to drift left.[highlight/]

Castor stagger is quite common, in fact most German calibration positions have this set into the target area.

Displacing the sub-frame is also used on some cars to "optimize" calibration positions, this may be where you garage got the idea?

This method is only used for camber optimization "not castor".... The reason for this is the position of the inner wheels accentuated lock is controlled by the transverse symmetry of the cross-member and the steering arms... Displace this then on one lock the steer position will not return fluidly and the other lock is rapid.

I would like to look at the report but fundamentally if your not happy please return to us and i will measure the chassis.

I hope this helps
Regards
Tony@ wim

Pm sent Tony, thankyou.
 So the car is now accounting for the right to left road camber? Maybe thats it, as on a flat road(rare) the car "pulls" to the right (because the road camber is not there) i did touch on that in my first post. Add to that my rear end symptoms and that may well be the issue(s)? My expectation was to set the car for a dead flat road, and all angles on both sides the same. I would then think ( ? ) the road camber alone would affect the car.
Hope that makes sense. Cheers.

Well had a return visit today, after going over the car with a fine tooth comb, Tony basically found 2 things, 1 The spring was all that could be found wrong with the rear end, symptoms being similar to
 Wishbone bushes, but at the rear. Interestingly the ride hight was 5 mil higher(10mil tolerance)  on the broken spring side! If it aint springs i guess its rear bushes next, or an inner ear infection making me dizzy?

The front mild stearing issue was less straight forward and again, not a great deal wrong, the more detailed exam  showed i small... crab? as i understand it(which i probably dont) i minor tweak to the track rods and swap the front tires round
and bingo, all sorted.
 I could not fault the drive home except for m4 junction 8/9 entry slip being closed due to to an accident and having to go 2 junctions the wrong way to get home.
Wim/black boots going beyond the call again. A pleasure to deal with. If only other companys had the same positive approach.
Thankyou Tony and staff. Nice one.  :y
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Lazydocker

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Re: Getting the WIM treatment
« Reply #17 on: 30 September 2008, 20:21:25 »

Just as an update... Got the new boots on and there's absolutely no pull whatsoever :y :y :y Also have to try really hard to get it sideways now the cr@ppy snow tyres have gone from the back end ::) ::)

Only downside is that I noticed that I've got a bit of rear spring missing :o ::)

So... Shocks and springs it is I suppose :y
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Whatever it is... I didn't do it
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