Menu
Forum
What's new
New posts
Live Activity
Search forums
Members
Registered members
Classifieds Member Feedback
Car Audio Discussion
General Car Audio
Car Audio Build Logs
Car Audio Equipment
Subwoofers
Speakers
Amplifiers
Head Units
Car Audio Help
Wiring, Electrical and Installation
Enclosure Design & Construction
Car Audio Classifieds
Car Audio Classifieds
Car Audio Wanted
Classifieds Member Feedback
Gallery
New media
New comments
Search media
SHOP
Shop Head Units
Shop Amplifiers
Shop Speakers
Shop Subwoofers
Shop eBay Car Audio
Log in / Join
Test
Forum
Search
Search titles only
Search titles only
Log in / Join
Search
Search titles only
Search titles only
What's new
New posts
Live Activity
Search forums
Members
Registered members
Classifieds Member Feedback
Menu
Reply to thread
Forum
Car Audio Help
Wiring, Electrical & Installation
Alt
JavaScript is disabled. For a better experience, please enable JavaScript in your browser before proceeding.
You are using an out of date browser. It may not display this or other websites correctly.
You should upgrade or use an
alternative browser
.
Message
<blockquote data-quote="audioholic" data-source="post: 7331055" data-attributes="member: 549629"><p>The alt isnt squealing, the belt on the alt is. Many people dont realize that an alt shows more and more resistance as its output goes up. Spin an alt when its out of the car and it spins freely, only resistance being from the internal bearings. But once its hooked to the engine and outputting power, the alt itself creates resistance.</p><p></p><p>Many people understand how an electrical motor works, but fail to apply that knowledge to an alternator, which is basically a motor in reverse. Elec motors work by alternating current thru them to reverse the polarity in the windings. The stator is a stationary piece that the magnetically charged windings react to (either pulled towards it, or repulsed from it), which creates the rotational force outputted to the motor shaft. An alternator works very similarly, but in reverse. The windings produce a reversible magnetic charge, just like a motor, but electrical energy is created when the force of the engine spins the assembly and creates the magnetic field. So, the more amperage the alt must produce, the more resistance it will provide against the spinning force from the engine.</p><p></p><p>Knowing this, your stereo has forced your alt to start producing more power than it previously had to before you installed the stereo. Again more power from the alt means more resistance to it spinning. This resistance is exerted to the engine via the drive belt. If the drive belt is squealing, it means the belt is slipping on one of the pulleys (creating the squealing noise). In other words, your problem may be as simple as tightening your belt(s). If you do this, and you notice your system voltage is still getting lower and lower, then its time to look at other options such as a bigger alt. Carry jumper cables with you.</p><p></p><p>Doing the 'big 3' means making your charging system transfer than electrical energy more efficiently throughout the car. This can obviously help, or hurt, an insufficient current supply situation. I almost always recommend upgrading the big 3 for this reason.</p></blockquote><p></p>
[QUOTE="audioholic, post: 7331055, member: 549629"] The alt isnt squealing, the belt on the alt is. Many people dont realize that an alt shows more and more resistance as its output goes up. Spin an alt when its out of the car and it spins freely, only resistance being from the internal bearings. But once its hooked to the engine and outputting power, the alt itself creates resistance. Many people understand how an electrical motor works, but fail to apply that knowledge to an alternator, which is basically a motor in reverse. Elec motors work by alternating current thru them to reverse the polarity in the windings. The stator is a stationary piece that the magnetically charged windings react to (either pulled towards it, or repulsed from it), which creates the rotational force outputted to the motor shaft. An alternator works very similarly, but in reverse. The windings produce a reversible magnetic charge, just like a motor, but electrical energy is created when the force of the engine spins the assembly and creates the magnetic field. So, the more amperage the alt must produce, the more resistance it will provide against the spinning force from the engine. Knowing this, your stereo has forced your alt to start producing more power than it previously had to before you installed the stereo. Again more power from the alt means more resistance to it spinning. This resistance is exerted to the engine via the drive belt. If the drive belt is squealing, it means the belt is slipping on one of the pulleys (creating the squealing noise). In other words, your problem may be as simple as tightening your belt(s). If you do this, and you notice your system voltage is still getting lower and lower, then its time to look at other options such as a bigger alt. Carry jumper cables with you. Doing the 'big 3' means making your charging system transfer than electrical energy more efficiently throughout the car. This can obviously help, or hurt, an insufficient current supply situation. I almost always recommend upgrading the big 3 for this reason. [/QUOTE]
Insert quotes…
Verification
Post reply
Forum
Car Audio Help
Wiring, Electrical & Installation
Alt
Top
Menu
Home
Refresh