Re: What speed should I get?
If you happen to have two fixed points and know the distance between the two you can always figure it out that way.
At 60mph you will do one mile of distance every 60 seconds, or 1/4mile in 15sec etc. This would get you in the ball park of how fast. Infact this is how the state highway patrol clocks speeders from the air. Ever notice a set of large white lines on the side of the freeway with no ryme or reason? Those are timing marks.
You can look up a chart online that will give you a breakdown of times/speeds, or use a tachymeter on a watch, like I said you'll need know specific distances tho.
Bill
