Post by scooteraddict on Aug 27, 2012 7:20:32 GMT -6
Well the other night, I was riding in the night, the real first time and I was using my newly installed 35/35w H4 halogen lights thinking that everything was OK. (By the way, this is a true MC54-250B model)
Now on a previous thread, I mentioned that I installed HIDs and had a problem, thinking that they were drawing too much amperage. I had notice that I had a a low voltage but still adequate, about 12.7 to 12.9 volts. Bike ran fine and the battery was not draining or having a hard problem starting.
Back to the story. As I was riding, something didn't seem right about the headlight. They weren't a bright as I expected them to be. Don't get me wrong, they were bright but not that bright. I had also noticed that they were change brightness but not as a flicker or because of the fan.
I started thinking about the regulator and that maybe the connections were just not that snug enough. So off come the plastics and started looking at the connectors and terminals of the regulator. At this point I starting thinking about the stator. I brake out the multimeter and tested it. With the reading I was getting, they weren't just right. So it was on the next step and pull the cover to the stator and what I found, I didn't like. As you can see in the picture, it was fried.
I didn't noticed it at first but with looking at the photos, I noticed this. (look at arrow)
I guess that once the oil drained away from the stator, it became evident that one wire was rubbing against the flywheel and eventually shorted out causing a high load in the one coil. And yes, these stators see oil.
I can tell you that the flywheel does not have one magnet but quite a lot of magnets on the inside which can produce what I think a lot of amperage. Maybe that's why I still had a good enough voltage to keep the bike running.
Also on this bike, the pickup coil for the CDI relies on what is called a Hall Effect principle. This is where a it senses a change in a magnetic field when a metal object passes through it. Just thought you guys would like to know.
Now on a previous thread, I mentioned that I installed HIDs and had a problem, thinking that they were drawing too much amperage. I had notice that I had a a low voltage but still adequate, about 12.7 to 12.9 volts. Bike ran fine and the battery was not draining or having a hard problem starting.
Back to the story. As I was riding, something didn't seem right about the headlight. They weren't a bright as I expected them to be. Don't get me wrong, they were bright but not that bright. I had also noticed that they were change brightness but not as a flicker or because of the fan.
I started thinking about the regulator and that maybe the connections were just not that snug enough. So off come the plastics and started looking at the connectors and terminals of the regulator. At this point I starting thinking about the stator. I brake out the multimeter and tested it. With the reading I was getting, they weren't just right. So it was on the next step and pull the cover to the stator and what I found, I didn't like. As you can see in the picture, it was fried.
I didn't noticed it at first but with looking at the photos, I noticed this. (look at arrow)
I guess that once the oil drained away from the stator, it became evident that one wire was rubbing against the flywheel and eventually shorted out causing a high load in the one coil. And yes, these stators see oil.
I can tell you that the flywheel does not have one magnet but quite a lot of magnets on the inside which can produce what I think a lot of amperage. Maybe that's why I still had a good enough voltage to keep the bike running.
Also on this bike, the pickup coil for the CDI relies on what is called a Hall Effect principle. This is where a it senses a change in a magnetic field when a metal object passes through it. Just thought you guys would like to know.
