Shopping on line can be easy, simple and save you lots of money. It can also take a lot of your time, frustrate you, and result in unwanted purchases. Now the same can be said for regular high street shopping, but with the vast opportunity presented by the Internet it will pay you to spend a few minutes reading this and understanding how to better optimize your Flywheel shopping experience:
1. Compare - without doubt the biggest advantage that the Flywheel offers shoppers today is the ability to compare thousands of Flywheel at a time. This is a great thing, but not necessarily all the time! Too much can be daunting at times so take advantage of the great comparison sites and where possible let them do the hard work for you.
2. Research - if it has been said it will be on the internet. Ignorance is no longer a justifiable reason for buying the wrong thing. Take the time to research in detail everything that you could possible want to know about
3. Testimonials - don't know anybody that has bought a Flywheel? Wrong! If the Flywheel is good the internet will let you know. Use the Internet as a friend and get testimonials before you buy.
4. Questions - Got a question about Flywheel then search the Forums, FAQ's, Blogs etc. Don't be afraid to ask .....
5. Reputation - Never heard of the company selling Flywheel? Don't worry, no reason why you should know every company in the world, but you know someone that does! Use the internet to find out what people are saying about Flywheel and build up a picture of their reputation for sales, returns, customer service, delivery etc.
6. Returns - still worried that even after all of the above your Flywheel wont be what you want? Check out the returns policy. There is so much competition now that someone, somewhere is bound to offer the terms that you are comfortable with.
7. Feedback - happy with your Flywheel then let people know, after all you are depending on others people input in your buying decision, so why not give a little back.
8. Security - check for the yellow padlock on the Flywheel site before you buy, and the s after http:/ /i.e. https:// = a secure site
9. Contact - got a question about Flywheel, or want to leave a comment then check out the sites contact page. Reputable companies have them and respond.
10. Payment - ready to pay for your Flywheel, then use your credit card or PayPal! Be aware of companies that don't accept them, there may be genuine reasons but given the huge amount of choice you have when buying online there is no reason at all not to buy via credit card or PayPal.
. Note the Castellated nut rim which was used to rotate the engine to the correct starting position by means of a lever. tractor with massive flywheel
A
flywheel is a rotating disk used as a storage device for
kinetic energy. Flywheels resist changes in their
rotational speed, which helps steady the rotation of the shaft when a fluctuating torque is exerted on it by its power source such as a
piston-based (
reciprocating engine)
engine, or when the load placed on it is intermittent (such as a piston pump). Flywheels can be used to produce very high power pulses as needed for some experiments, where drawing the power from the public network would produce unacceptable spikes. A small motor can accelerate the flywheel between the pulses. Recently, flywheels have become the subject of extensive research as power storage devices for uses in vehicles; see flywheel energy storage. Flywheel drive is common in low-cost toys.
A momentum wheel is a type of flywheel useful in satellite pointing operations, in which the flywheels are used to point the satellite's instruments in the correct directions without the use of thrusters.
Physics
Energy is stored in the rotor as
kinetic energy, or more specifically,
rotational energy:
E_k=\frac{1}{2}\cdot I\cdot \omega^2
where
\omega is the
angular velocity, and
I is the
moment of inertia of the mass about the center of rotation.
- The moment of inertia for a solid-cylinder is I_z = \frac{1}{2} mr^2,
- for a thin-walled cylinder is I = m r^2 \,,
- and for a thick-walled cylinder is I = \frac{1}{2} m({r_1}^2 + {r_2}^2).
where
m denotes mass, and
r denotes a radius. More information can be found at list of moments of inertia
The amount of energy that can safely be stored in the rotor depends on the point at which the rotor will warp or shatter. The hoop stress on the rotor is a major consideration in the design of a flywheel energy storage system.
\sigma_t = \rho r^2 \omega^2 \
where
\sigma_t is the tensile stress on the rim of the cylinder
\rho is the density of the cylinder
r is the radius of the cylinder, and
\omega is the angular velocity of the cylinder.
Applications
In application of flywheels in vehicles, the phenomenon of precession has to be considered. A rotating flywheel responds to any momentum that tends to change the direction of its axis of rotation by a resulting precession rotation. A vehicle with a vertical-axis flywheel would experience a lateral momentum when passing the top of a hill or the bottom of a valley (roll momentum in response to a pitch change). Two counter-rotating flywheels may be needed to eliminate this effect.
The flywheel has been used since ancient times, the most common traditional example being the
potter's wheel. In the
Industrial Revolution, James Watt contributed to the development of the flywheel in the
steam engine, and his contemporary
James Pickard used a flywheel combined with a
crank (mechanism) to transform reciprocating into rotary motion.
History
The principle of the flywheel is already found in the Neolithic
Spindle (textiles) and the
potter's wheel.Lynn White, Jr., “Theophilus Redivivus”,
Technology and Culture, Vol. 5, No. 2. (Spring, 1964), Review, pp. 224-233 (233)
The flywheel as a general mechanical device for equalizing the speed of rotation is first decribed in the
Kitab al-Filaha of the
al-Andalus Inventions in the Muslim world Ibn Bassal (fl. 1038-1075), who applies the device in a chain pump (saqiya) and noria.Ahmad Y Hassan, Flywheel Effect for a
Saqiya.
According to the American medievalist
Lynn Townsend White, Jr., such a flywheel is also recorded in the
De diversibus artibus (
On various arts) of the German artisan Theophilus Presbyter (ca. 1070-1125), who records applying the device in several of his machines.Lynn White, Jr., “Medieval Engineering and the Sociology of Knowledge”,
The Pacific Historical Review, Vol. 44, No. 1. (Feb., 1975), pp. 1-21 (6)
See also
References
External Links
- Flywheel highlight: Hypervideo showing construction and operation of four cylinder internal combustion engine (courtesy of Ford Motor Company)
. Note the Castellated nut rim which was used to rotate the engine to the correct starting position by means of a lever. tractor with massive flywheel
A
flywheel is a rotating disk used as a storage device for
kinetic energy. Flywheels resist changes in their
rotational speed, which helps steady the rotation of the shaft when a fluctuating torque is exerted on it by its power source such as a
piston-based (
reciprocating engine)
engine, or when the load placed on it is intermittent (such as a piston pump). Flywheels can be used to produce very high power pulses as needed for some experiments, where drawing the power from the public network would produce unacceptable spikes. A small motor can accelerate the flywheel between the pulses. Recently, flywheels have become the subject of extensive research as power storage devices for uses in vehicles; see
flywheel energy storage. Flywheel drive is common in low-cost toys.
A
momentum wheel is a type of flywheel useful in satellite pointing operations, in which the flywheels are used to point the satellite's instruments in the correct directions without the use of thrusters.
Physics
Energy is stored in the rotor as kinetic energy, or more specifically,
rotational energy:
E_k=\frac{1}{2}\cdot I\cdot \omega^2
where
\omega is the angular velocity, and
I is the moment of inertia of the
mass about the center of rotation.
- The moment of inertia for a solid-cylinder is I_z = \frac{1}{2} mr^2,
- for a thin-walled cylinder is I = m r^2 \,,
- and for a thick-walled cylinder is I = \frac{1}{2} m({r_1}^2 + {r_2}^2).
where
m denotes mass, and
r denotes a radius. More information can be found at list of moments of inertia
The amount of energy that can safely be stored in the rotor depends on the point at which the rotor will warp or shatter. The hoop stress on the rotor is a major consideration in the design of a flywheel energy storage system.
\sigma_t = \rho r^2 \omega^2 \
where
\sigma_t is the tensile stress on the rim of the cylinder
\rho is the density of the cylinder
r is the radius of the cylinder, and
\omega is the angular velocity of the cylinder.
Applications
In application of flywheels in vehicles, the phenomenon of
precession has to be considered. A rotating flywheel responds to any momentum that tends to change the direction of its axis of rotation by a resulting precession rotation. A vehicle with a vertical-axis flywheel would experience a lateral momentum when passing the top of a hill or the bottom of a valley (roll momentum in response to a pitch change). Two counter-rotating flywheels may be needed to eliminate this effect.
The flywheel has been used since ancient times, the most common traditional example being the
potter's wheel. In the
Industrial Revolution,
James Watt contributed to the development of the flywheel in the steam engine, and his contemporary James Pickard used a flywheel combined with a crank (mechanism) to transform reciprocating into rotary motion.
History
The principle of the flywheel is already found in the Neolithic Spindle (textiles) and the
potter's wheel.Lynn White, Jr., “Theophilus Redivivus”,
Technology and Culture, Vol. 5, No. 2. (Spring, 1964), Review, pp. 224-233 (233)
The flywheel as a general mechanical device for equalizing the speed of rotation is first decribed in the
Kitab al-Filaha of the al-Andalus Inventions in the Muslim world Ibn Bassal (fl. 1038-1075), who applies the device in a
chain pump (saqiya) and
noria.Ahmad Y Hassan, Flywheel Effect for a
Saqiya.
According to the American medievalist Lynn Townsend White, Jr., such a flywheel is also recorded in the
De diversibus artibus (
On various arts) of the German artisan
Theophilus Presbyter (ca. 1070-1125), who records applying the device in several of his machines.Lynn White, Jr., “Medieval Engineering and the Sociology of Knowledge”,
The Pacific Historical Review, Vol. 44, No. 1. (Feb., 1975), pp. 1-21 (6)
See also
References
External Links
- Flywheel highlight: Hypervideo showing construction and operation of four cylinder internal combustion engine (courtesy of Ford Motor Company)
Flywheel - Wikipedia, the free encyclopedia
A flywheel is a rotating disc used as a storage device for kinetic energy. Flywheels resist changes in their rotational speed, which helps steady the rotation of the shaft when a ...
Flywheel energy storage - Wikipedia, the free encyclopedia
Flywheel Energy Storage (FES) works by accelerating a rotor (flywheel) to a very high speed and maintaining the energy in the system as rotational energy.
flywheel definition of flywheel in the Free Online Encyclopedia.
Encyclopedia article about flywheel. Information about flywheel in the Columbia Encyclopedia, Computer Desktop Encyclopedia, computing dictionary. flywheels
FLYWHEEL, SHYSTER, AND FLYWHEEL
FLYWHEEL, SHYSTER, and FLYWHEEL This series was originally made in the 30s with Groucho and Chico Marx taking the roles of Waldorf T. Flywheel and Emmanuel Ravelli respectively ...
Flywheel Aerospace
Flywheel Aerospace, Ltd. Important: Flyblog Wheelpost; Photo Album; Bookmarks; Less important: Red Meat; Prince Alex; Wolf J. Flywheel; Important but (currently) nonfunctional:
KAD : Alloy Flywheel and back plate
KAD : Alloy Flywheel and back plate ... KAD Mini Alloy flywheel and back plate: KAD Alloy Flywheel and Backplate
Flywheel Productions
This domain has just been registered for one of our customers! Domain registration and webhosting at best prices.
Peugeot 307SW Clutch & Flywheel Problems - The Consumer Forums
Hi, Just had my 3 yr OLD 307sw se 110Diesel pack up on me at the weekend, Typical just out of warranty too and 67000 miles on the cloch. Appears that the Flywheel emploded and ...
Flywheel - SELOC TechWiki
Lightweight flywheel . Standard original equipment flywheel weighs over 7KG most aftermarket “lightweight” flywheels weigh anywhere from 3.7 - 4.2KG
Flywheel - Frictionless Delivery of Solutions - Home
flywheel consulting outsourcing managed services monitored services staff augmentation
