See full version: What is a stator
As the above section indicates, you may hear the terms “generator,” “stator,” and “alternator” tossed around with much casualness. All of these items have been used on motorcycles, and all serve (sorta) the same function. Let’s take a fast trip through history and talk about the differences between them so you know why you have a stator, and what it does differently from other devices that make electricity — and why the related jargon is a little confusing.
A magneto. Think of it as a mechanically driven, self-contained sparkin' box. This is a later magneto fitted to an earlier motorcycle that was once equipped with a timer, but magnetos were OEM pieces once upon a time. Photo by Lemmy.
Up to the early 1960s, most motorcycles were six-volt systems, but after that time, many motorcycles began sporting 12-volt electrical items. The reason for this was due primarily to increased engine power. To make more powerful motorcycles, compression ratios climbed higher. Starters needed greater power to spin the engines, and higher voltage could help supply that power. Generators were then produced in 12V variants for a brief time. more
The very earliest motorcycles used a magneto (a small, isolated system run by the engine) to create spark to provide electricity needed by the spark plug to fire. This very limited system worked because there wasn’t much electrical demand on a motorcycle of the day. Lights at the time were non-existent, or later, acetylene-powered.
An automotive style alternator is a fully self-contained, externally mounted unit that creates DC current. Another difference between stators and automotive style alternators is the type of magnet uses. Stators use a permanent magnet, and automotive alternators use an electro-magnet.
If the motorcycle charging system is not properly charging the battery, simply replacing it will not solve the issue. Additionally, a discharged battery will need to be brought up to full charge prior to static or load testing it.
24) NASCAR Technical Institute prepares graduates to work as entry-level automotive service technicians. Graduates who take NASCAR-specific electives also may have job opportunities in racing-related industries. Of those 2019 graduates who took electives, approximately 20% found racing-related opportunities. NASCAR Tech’s overall employment rate for 2019 was 84%. here
15) Manufacturer-paid advanced training programs are conducted by UTI on behalf of manufacturers who determine acceptance criteria and conditions. These programs are not part of UTI’s accreditation. Programs available at select locations. here
Secondly, what causes weak spark on outboard motor? Weak spark may cause starting and running difficulties as there may not be enough heat generated in the spark to accomplish ignition of the fuel/air mix in the combustion chamber. Common reasons for weak spark are faulty flywheel magnets and faulty stator. here
Runs good at lower rpms but runs bad at higher rpms (High speed coil is going bad) Backfiring and just won't run good. Sled slowly loses power during the course of the day. Spark plugs keep getting richer/darker as the day goes on indicating weakening spark.
What causes a stator to go bad?
Keeping this in view, what causes weak spark?
The cause for failure can be the result of violating the duty cycle limitations; i.e starting too often without proper elapsed time between starts. here
Also, allowing the Soft Starter to source high current for too long a time will raise the heat, and cause SCR degradation and ultimate failure (elevated heat reduces the reverse blocking capability of the devices and they fail).
or any combination of the three.
Note that the vast majority of SCR related faults occurring on the S611/S801+/S811+ soft starters are actually caused by a disconnection between the soft starter and the motor. Check any disconnects, fuses and junctions on that run, and the connections to the soft starter and motor.
For the controller to have SCR failures, I can offer that these typically come from three main causes: