samhocking said:
Haven't had time to read much, but freddy claiming an electro-magnetic motor doesn't need magnets, just coils was pretty funny!
Sam I feel for you and your level of understanding. I was very specific. I said there was no need for permanent magnets.
Last year 72 million cars were produced. The magnetic field required by the starter motor to enable it to be of a sufficiently small size given its very large power output, is such that using permanent magents is not practical. Coils are used to create a temporary magentic field that would otherwise be generated by a larger permanent magnet.
There are no permanent magnets in the 72 million starter motors produced last year, just coils creating electro-magnets. When the current is turned off, they are lose their magnetism. Now they do use iron as the soft magnetic core, transporting the field to where it is most effective. Iron - like that in the bolt on the seat clamp could be detected. but who is to say they are not using the new modern plastic electro-magnetic materials such as those used in pacemakers, computer disc drives and cochlear implants.
The point was the ipad could detect electric motors if used corrrectly, not every motor but enough. The Commissaires are not doing so. We don't know how many of Femke's fellow competitors at the World Champs had to report her before the UCI actually did something, but contemporary reports tended to indicate it was multiple, with a growing sense of frustration suggesting the UCI were reluctant to act. Surely they should have been leaping out of their skin at the first suggestion, if they actually wanted to catch someone. And who was caught ? UKAD get plenty of flak for busting nobodies.