Where did you get the conversion factor of 1.944 Lucas? I think you are converting m/sec to knots, not km/hour.
The 'speed' provided by the LocationSensor is 'average' speed between two successive LocationChanged events. The reported value is not instantaneous speed. Understanding the difference between average and instantaneous may be the reason you do not achieve the results you expect. You need to understand the speed units - the LocationSensor reports speed in m/sec units), convert to km/hr if you want speed in kilometers (1000 meters) and also be aware m/sec must be addressed to convert kilometers/ hour . m/sec * km/1000m * 60 sec/min * 60 min/hour = km/hour .
To convert m/sec to km/hr use this formula:
18 * m/sec / 5 = km/h.
1 meter/second is equal to 3.6 km/h or 1.944 knots .
Does this help Lucas?
Have you read:
If you have not yet read the discussions, they may provide a better understanding of what you are trying to achieve.
Good luck. Just use the correct conversion factor.