Terms of chassis measurement


ride height

HöhenstandThe ride height results of the actual level of the vehicles body to the vehicles construction level.
It is measured for example at an MG F from the middle of the wheel to the lower edge of the wheel housing. The measurement takes place perpendicularly via the wheel center.
The body height can be varied by loading modification, whereby the chassis measured values change at the same time.

Data measured at my
MGF, NE-WZ77
front [mm] rear [mm]
Minimum 280  
Maximum 395 405
Standard at 17° C 368 363
calculated average
(Max-Min)
115
(+/- 57)
 
mean value 358  
Standard bei 17° C 368 363

ie. at the MGF a hight change of about 40 mm round the standard hight (368mm) results a toe angle change of about 10 minutes.

The ride height has crucial influence on the results of the chassis measurement.

The ride hight af MG F depends on the condition of the hydragas system and temperature (c=0.6mm/°C). Only measure on plain level after app.. 2 h still stand, with released handbrake. Roll body 1 m for- und backward and bounce all 4 sides once.

   
front
rear
nominal hight at 17°C
0,6mm/°C
358 ...368... 378 mm
353 ...363... 373 mm
T [C]
T Correction
front
rear
-30
-28,2 mm
339,8 mm
335,8 mm
-20
-22,2 mm
345,8 mm
340,8 mm
-10
-16,2 mm
351,8 mm
346,8 mm
-5
-13,2 mm
354,8 mm
349,8 mm
0
-10,2 mm
357,8 mm
352,8 mm
5
-7,2 mm
360,8 mm
355,8 mm
10
-4,2 mm
363,8 mm
358,8 mm
12
-3,0 mm
365,0 mm
360,0 mm
14
-1,8 mm
366,2 mm
361,2 mm
16
-0,6 mm
367,4 mm
362,4 mm
18
0,6 mm
368,6 mm
363,6 mm
20
1,8 mm
369,8 mm
364,8 mm
22
3,0 mm
371,0 mm
366,0 mm
24
4,2 mm
372,2 mm
367,2 mm
26
5,4 mm
373,4 mm
368,4 mm
28
6,6 mm
374,6 mm
369,6 mm
30
7,8 mm
375,8 mm
370,8 mm
35
10,8 mm
378,8 mm
373,8 mm

Constructors level

HöhenstandDuring the development of a vehicle the construction level (coordinates) is defined. The zero lines of Z and X axis are situated exactly in the middle of the vehicle, while the zero line of the Y axis runs exactly in the front wheels center.

This construction level is identical for vehicle position at the debit ride height.

!All of the Car manufacturer given chassis data refer to the constructors level.


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