Quote:
Originally Posted by dan
Don't rely on sat navs, they are not accurate as you may feel they are. It is a calculation worked out from 3 satellites triangulating you position. You have no way of telling if you may lose or have a break in signal at any time with any one.
The slightest error, or disturbance can cause the tiniest miscalculation which will be manified immensely by the time it comes back to earth.
Only way you can really tell accurately is to travel a measured mile, and work it out with maths!
1mph = 1.46 ft/s
5280ft = 1 mile
At 30 mph, you will be eating 43.8ft every second.
You can culculate from there by multiplying the singular with the MPH. For example, at 60mph you will travel at the optimum...a mile a minute.
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Good point Dan, i have said this before - and been shot down in flames - testing your speedo against your clock /watch on long journeys is about as good as it gets
06-07-2011, 22:04
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