- How fast can you spin an alternator?
- Do alternators have clutches?
- Should my alternator spin freely?
- How do I find out the speed of my alternator?
- What RPM is needed for electricity?
- Can an alternator lock up?
- How do you know if your alternator pulley is bad?
- How much HP does an alternator draw?
- Which way does an alternator spin?
- How fast does a car alternator charge the battery?
- Can I put a bigger pulley on my alternator?
- Can a car alternator power a house?
- How much drag does an alternator produce?
- Which pulley turns faster?
- Can you change alternator pulley?
How fast can you spin an alternator?
An alternator has a normal range of operation.
Most alternators need to spin at about 2,400 rpm at idle, have their maximum output above 6,000 rpm, and should never exceed 18,000 rpm..
Do alternators have clutches?
An Overrunning Alternator Pulley (OAP) has a one-way clutch mechanism inside the hub that allows the belt to turn the alternator in one direction, but allows the alternator to free-wheel and spin at its own speed when the engine suddenly decelerates. … Some replacement alternators come with pulleys and some do not.
Should my alternator spin freely?
If you are referring to a standard automotive alternator that is unplugged and does not have a belt coupling it with the rest of the engine, then quite freely. Freely enough, in fact, to continue spinning for a bit after being spun by hand. … Otherwise, the most obvious impediments to free rotation are: bad bearings.
How do I find out the speed of my alternator?
1 Answer. You are correct. The number of poles is the sum of the north plus south poles. Speed(RPM) = Frequency(Hz) X 120 / Poles = 100 X 120 / 12 = 1000 RPM.
What RPM is needed for electricity?
1,000-1,800 rpm1,000-1,800 rpm is the rotational speed required by most generators to produce electricity. The high-speed shaft drives the generator which produces AC electrical current. Power cables transport the electricity to ground level.
Can an alternator lock up?
If the alternator locks up, it will usually snap or throw the drive belt. Bearing failure can also be caused by dirt or water contamination. … Worn bearings can be replaced by disassembling the alternator and installing new bearings.
How do you know if your alternator pulley is bad?
If you hear a short buzzing sound (1 to 5 seconds), the pulley’s bearing may have worn out and the overrunning alternator pulley may require replacement. A short chirp noise during engine start-up or shut down is most likely caused by a worn overrunning alternator pulley.
How much HP does an alternator draw?
How much power does it take to run an alternator? An alternator typically takes about 1 HP (horse power) for every 25 amps of power generated. So, a 100 amp alternator will require about 4 HP at full output. Most alternators do not operate at full output for very long.
Which way does an alternator spin?
Rule of thumb. If the engine rotates clockwise, which it does, then any pulley driven by the inside of the belt rotates clockwise, and any pulley driven by the backside of the belt turns counterclockwise, like the water pump.
How fast does a car alternator charge the battery?
For a battery being charged by the car’s alternator it can take an hour of driving to get it fully charged. Car batteries range from 40AH to 110AH, and alternators range from 45 amps to 200 amps.
Can I put a bigger pulley on my alternator?
Yes, you can increase your alternators overall output as well as increase power output at engine idle speeds. Check the size of the pulley on your alternator. If you are having problems with overall alternator output or charging at engine idle, maybe a smaller pulley is all you need.
Can a car alternator power a house?
Yes, of coures. Alternators can be used to generate electricity, but the alternators are noisy. If there is a short-term power failure, or the family just needs lighting, you can use general lighting, such as flashlight.
How much drag does an alternator produce?
there is windage drag from the alternator spinning even when not loaded. 1 Hp = 748 Watts. 150 A alternator putting out 13.8 V = 2.77 Hp at 100% efficiency.
Which pulley turns faster?
Alternatively, a larger pulley turning a smaller pulley results in the smaller one turning faster but with less shaft power. For example, a truck in high gear would have a more slowly turning engine but fast turning wheels, resulting in greater speed of the truck.
Can you change alternator pulley?
To remove the alternator pulley, use a 1/2″ Drive impact wrench to loosen the nut. Most automotive Alternator pulleys use a 15/16 socket. … needed to remove the pulley, do not overheat. Install the new pulley, lock washer, and nut by hand.