... stunning sequences! You really got it all! Thank you for this, Fiona!
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Thanks Guys!
Hans, feel free to send the link to Hans V-R along with your suggestion that I take their new Peking-Paris car on an endurance rally through Africa or indeed Peking to Paris, by way of a severe road test! ....Mongolia is incredibly tough terrain with fantastic photo opportunities!
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Hey, you beat me to it! I was just about to post that link, I uploaded it last night. Thought you might like to see a bit more footage of the Spykers at Dunsfold.
YouTube - Spykers at Dunsfold, Dad's Day Out event
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Originally posted by amzamz View PostAt what speed do the Spyker wheels appear to stand still?
The condition to "stand still" would be given by 0.1957/0.04 = 4.89 m/s or multiples thereof. That means, we should be able to observe several "stand stills" during the acceleration of a Spyker, namely at 17.6, 35.2, 52.8, 70.5, 88.1, 105.7, 123.3, 140.9, 158.5, 176.1, 193.7 or 211.4 km/h etc.
I am still not 100 percent sure I understand why this phenomenon can be observed better on Spyker wheels than on other ones...Last edited by amzamz; 17-10-2010, 10:05.
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Originally posted by amzamz View PostLet us do this step by step: Assume we have rear tyres like "265 / 30 ZR 19". They have a circumference of 1.957m. There are 10 spokes on a Spyker wheel. To move one spoke into the position of the next one, we would need to travel a distance of 1/10 of the circumference. That is every 0.1957m. If the frame rate of the video is 25 frames per second (and I am not sure it is), that gives 0.04s frame to frame.
The condition to "stand still" would be given by 0.1957/0.04 = 4.89 m/s or multiples thereof. That means, we should be able to observe several "stand stills" during the acceleration of a Spyker, namely at 17.6, 35.2, 52.8, 70.5, 88.1, 105.7, 123.3, 140.9, 158.5, 176.1, 193.7 or 211.4 km/h etc.
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Originally posted by amzamz View Post... nice cuts, Fiona! At what speed do the Spyker wheels appear to stand still? This is a question for a mathematician! What is the frame rate on YouTube, Fiona? Why do the other cars not show that phenomenon?
It's done in the camera by using a very fast shutter speed, around 2000th or faster. You can see it on some of the other cars too and most notably on the helicopter rotor blades in the highlights video. I think the propellor spoke design of the Spyker wheels lends itself better to the effect than the other cars so it's more noticeable.
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