i use the 5k=3mi rough conversion and try the arithmetic in my head, doesn’t always work... 8^)
thanks, that sounds easier too- i just need to be in ballpark- for quick conversion-
so for every 10k it woudl be 6 miles- 50k would be 30 miles per hour, 100k woudl be 60, and 300k around 180 mph- almost top speed- add another 50k for almost top speed of 220 mph