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Re: Motor power question
Horsepower is the maximum power produced by the motor. Saws with high horsepower ratings are good for pattern cutting and cutting down thick stock. Higher horsepower also allows the saw to cut through thick stock without bogging down or burning the wood.
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Please see below courtesy of engineeringtoolbox.com
Electrical power is in general rated in watt (W) or horsepower (HP). A horsepower is a unit of power equal to 746 watts or 33000 lb ft per minute (or 550 lb ft per second).
A watt is equal to the power produced by a current of 1 amp across the potential difference of 1 volt. A watt is 1/746 of 1 horsepower.
Even if the watt is the base unit of electrical power, it is common to rate motor power in either horsepower or kilowatts.
Power in Watts
Electric power supply to a direct current (DC) motor: PkW = ?m U I / 1000 (1) where PkW = power (kW) ?m = motor efficiency U = voltage (V) I = current (A, amps)
Electric power supply to a alternating current (AC) motor:
PkW = ?m U I PF / 1000 (1b) where PF = Power Factor
Two Phase Four Wire
PkW = ?m 2 U I PF / 1000 (1c)
PkW = ?m 1.73 U I PF / 1000 (1d)
Electric motors seem to turn around 1125 rpm or 3600 rpm. The pulley size on the motor and pump must be adjusted to achieve the desired result without overheating /loading the motor. I have seen pumps turning from 800 to 1200 rpm using different pulley size on motor, motor hp and motor rpm. Some brands will turn same pump from 1200 to 3600 rpm depending on if was electric or gas motor. This will certainly shorten the life of the pump but will most likely work. Most turn an average of 1200 rpm for good balance of long life and good supply of air. Pump rpm is usually limited to the power of the motor. Cost effective match of 1.5 hp motor will turn pump about 1000 - 1200 rpm for about 5cfm. Rol Air 2hp motor turns 2 cyl pump about 1100 rpm for 10 cfm. Good luck
Yes, but it would depends on what type of engine you have and it would not be street legal is you did add that much horsepower.----------------------------------------------------------------- Godiag T300+
A 1/2-horsepower motor wired for 220 volt operation is ample for this hand-fed saw. Using a much larger motor will lead to some serious kick-back problems because the motor will continue to turn if the cut becomes bound. A higher horsepower motor requires power feed for the stock to control kick-back. Hope this helps!
It is continuous. Some manufacturers used to say just "horsepower," when "continuous" horsepower was really a better measure. Consumers picked up on this and started asking your question. Now the horsepower quoted by almost all brands, including NordicTrack, os continuous. However, they got lots of consumers asking "What does 'continuous' mean? so now they just say "horsepower," even though it is "continuous" horsepower! For a full explanation of what this means, see treadmill answers.
The horsepower should be listed on the nameplate (left) of the pump motor (in very tiny letters - hp). If the motor nameplate is burnt or worn off, sometimes a part number of the impeller (right) can tell us which hp your pump motor is.
* Engine Options -- Tillers come in four- and two-stroke models.
o Get a four-stroke engine if you can.
+ Easier to start up than two-stroke models.
+ Require less maintenance and are more convenient because they don't require any mixing of fuel and oil.
+ Produce less exhaust.
o The more horsepower, the more powerful your tiller will be.
+ Rear-tine tillers generally have more horsepower than any other kind.
+ You'll appreciate that horsepower when you have hard soil to till.
No, When an air compressor is built, it requires a motor or engine to power the process of producing air. The horsepower is not the only component of the equation. It has to be combined with the compressor pump that it runs to produce the air needed. The bigger the horsepower does not necessarily mean more air. Remember to keep your required cfm in mind. Horsepower does not make you work more efficiently, but horsepower working in unison with a quality pump that produces enough cfm for your needs.
Make sure when shopping that you look for the running horsepower and not the peak horsepower you get at startup. Some manufacturers have falsely advertised or implied the peak horsepower to be the normal run horsepower. At start-up, there is a surge of power needed to start the motor and can be 1.5-3 times the amount of running power needed. This means the horsepower need for the motor peaks as well, but then drops back down to normal. Many of these manufacturers are involved in a class-action lawsuit for misrepresentation. They have used man’s machismo of “the more horsepower, the better” to their advantage to make sales. These aren’t cars we’re talking about!