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Originally Posted by kevtherev
O/K, now I have got it, I think. Silly me,  trust the Germans (or Americans) to get things a#se about face. In the meantime I racked up a quick example (US wheel) in Paint Shop from your picture. Now when I compare the readings between the two I get a 0.4 knt increase in speed on the German one against the US one. Could be my assembly is not quite correct or it could be that the German one is a little faster !! vorsprung durch teknik. :hmm:
Still, many thanks, can now go ahead with speeeeed calculations.  |
There should be a difference: The US wheel uses yards for it's distance calculation, the German one meters.
If a target is going 4 units per second, the speed is about 7.2 knots if units = yards, and about 7.8 knots if units = meters.