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Message started by JohnBoy on 10/23/11 at 21:10:18

Title: electromagnet to trip traffic lights?
Post by JohnBoy on 10/23/11 at 21:10:18

I installed a 12 volt electromagnetic solenoid to my kickstand and ran it to a momentary switch on the handlebar. The idea was to energize the electromagnet in the solenoid pushing a pulse down into the road surface. Unfortunately, the power of the electromagnet was so weak that it will only pull a compass needle if the compass is actually touching the solenoid. :-?

Then I found a small 12 volt electromagnet that draws 4 amps and pulls 100 pounds. That ought to do the trick!
Now it dawns on me that this much magnetism just might have an impact on the ignition module. Any ideas or incites?

Title: Re: electromagnet to trip traffic lights?
Post by built2last66 on 10/23/11 at 21:22:13

Can't you just roll up to the little metal thing in the road at the stop light, turn off your bike, then start it back up and it changes the light?

Title: Re: electromagnet to trip traffic lights?
Post by verslagen1 on 10/23/11 at 21:39:06

don't know
the cdi is transistorized

http://suzukisavage.com/cgi-bin/YaBB.pl?num=1293638302/0

I don't see any coils to pick up anything, but I wouldn't want to point it at it.

Title: Re: electromagnet to trip traffic lights?
Post by Gyrobob on 10/24/11 at 07:13:52

537671775B7660190 wrote:

The solenoid will be so far away from the rectifier and ignition, it won't make any difference. There might be a concern about the voltage spike when you actuate it, but it doesn't seem to me it would be any worse than the spike of the starter or the decompression solenoid.

What I'm wondering is if these gizmos do any good at all to trigger traffic lights. All the lights around here (metro Atlanta) use a system that has a wire loop about 8' by 20' buried in the asphalt.

These guys seem to have a solution that works:

a short video: http://www.instructables.com/id/Trigger-GREEN-Traffic-Lights/

an article: http://www.wikihow.com/Trigger-Green-Traffic-Lights

Title: Re: electromagnet to trip traffic lights?
Post by built2last66 on 10/24/11 at 08:18:07

http://www.wikihow.com/Trigger-Green-Traffic-Lights

"Press the starter button. If you're on a motorcycle you can pull in the clutch, stop the engine, and press the engine starter button. The starter is powered by an electromagnetic motor, creating more magnetic energy and tripping the sensor."

;)

Title: Re: electromagnet to trip traffic lights?
Post by Arnold on 10/24/11 at 09:33:10

If I'm alone at a light on the bike, I just go.

Title: Re: electromagnet to trip traffic lights?
Post by drums1 on 10/24/11 at 09:48:51

Obviously, Arnold just goes. ;D

I have run into this a few times. I usually make a right turn and then a quick u-turn. Or, just avoid those intersections where there are known sensors.

Title: Re: electromagnet to trip traffic lights?
Post by EJID on 10/24/11 at 12:25:18

Our state has a law that was passed allowing bikes to go through a red-light intersection if it doesn't change for one full cycle. Never had to test that yet myself.

Title: Re: electromagnet to trip traffic lights?
Post by Gyrobob on 10/24/11 at 12:32:40

7B6E7576767F6E7F681A0 wrote:

If I'm alone at a light on the bike, I just go.

I got a ticket for that in Mountain View, CA in 1970.