Originally Posted by
Joshua417
(I dont have time to read all the replies if this is stated ignore me)
You can get a very high powered magnet and place it at the bottom of your bike and sometimes that does the trip. The magnet acts as a "huge object" for the sensors underground and can sometimes help you. I know motorcycles use these all the time. Should be no different for a bike.
You need to read the posts...particularly CB HI's post and the related links. A magnet on a bike, motorcycle, car, head, etc. do
nothing when it comes to inductions coils. Yes, they add mass to a bike but the magnetic field of a permanent magnet...even a very, very massive one that would be too big to carry on a bike...is too weak to have any effect on the induction coil unless it's in direct contact with the wires. Magnetic fields of permanent magnets decrease as a square of distance. This means that if the field has a certain strength at one distance, if you increase the distance from the magnet, the strength of the field is 1/4 as strong.
You can
reliably trigger stoplights with induction coils by rolling your wheel directly over the wire buried in the pavement for it's entire length. If the coil is a figure 8 coil, line up on the middle of the figure 8 because the coil is more sensitive due to the two wires overlapping. The trick is to find that wire because they can get buried due to repavement of the road.
It's been my experience that people who say they can't trip the light with a bicycle or motorcycle, don't know how the coils work.