LesiU
I did simple standing (0 km/h) test to check, if ride height reported by telemetry is in par with what I set in HDV and... no, it is not the same.
My test car have these parameters:
- weight 1520kg = 14911.2N
- weight distrib f/r: 37/63% = 5517.144 / 9394.056N
- lateral distrib l/r: 50/50% = 2758.572 / 4697.028N per tyre front/rear
- wheelbase: 2350mm = 2.35m
No fuel in the tank, so this one we don't have to include in our calculations (fuel tank itself weights none... and just checked - is not taken into calculations at all. The same with driver's head provided in susp file).
Now, checking tyre load in telemetry:
- 2760 / 2760N for front left and right
- 4695 / 4695N for rear tyres
Loads are OK. I won't be crying because of that 1.5/2N difference ;-)
Now what about ride height? I setup my undertrays to be exactly like wheelbase is and at reference plane (y=0.0) so Z is -1.175 for 00 and 01 undertray points and 1.175 for 02 and 03.
HDV ride height is specified at 98mm = 0.098m for all 4 corners.
What I have in telemetry?
- 97.46 / 97.47mm for front L/R - why about 0.5mm lower? OK, let it be
- 90.59 / 90.60mm rear L/R - why 8.4mm lower than should? Where that came from?
It has nothing to do with tyre stiffness, because I rFactor would be taking that into accound AFTER setting ride height then with my tyres, the car should be sitting 13,39/17,40mm lower than initial ride height (98/98mm).
My test car have these parameters:
- weight 1520kg = 14911.2N
- weight distrib f/r: 37/63% = 5517.144 / 9394.056N
- lateral distrib l/r: 50/50% = 2758.572 / 4697.028N per tyre front/rear
- wheelbase: 2350mm = 2.35m
No fuel in the tank, so this one we don't have to include in our calculations (fuel tank itself weights none... and just checked - is not taken into calculations at all. The same with driver's head provided in susp file).
Now, checking tyre load in telemetry:
- 2760 / 2760N for front left and right
- 4695 / 4695N for rear tyres
Loads are OK. I won't be crying because of that 1.5/2N difference ;-)
Now what about ride height? I setup my undertrays to be exactly like wheelbase is and at reference plane (y=0.0) so Z is -1.175 for 00 and 01 undertray points and 1.175 for 02 and 03.
HDV ride height is specified at 98mm = 0.098m for all 4 corners.
What I have in telemetry?
- 97.46 / 97.47mm for front L/R - why about 0.5mm lower? OK, let it be
- 90.59 / 90.60mm rear L/R - why 8.4mm lower than should? Where that came from?
It has nothing to do with tyre stiffness, because I rFactor would be taking that into accound AFTER setting ride height then with my tyres, the car should be sitting 13,39/17,40mm lower than initial ride height (98/98mm).
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