Many pilots who are proficient in flying a dual-rotor or coaxial rotor R/C helicopters find single-rotor models a little different.Nitro helicopters are at this time more common than any other types of R/C helicopters. It uses a mixture of nitromethane and oil to keep it working. Nitro helicopters are available in various sizes - 15, 30, 50, 60 and 90 size. These refer to the engine size included in each type. The larger and more powerful the engine is, the bigger the main rotor blade that it can revolve thus the superior power to lift the aircraft.A single-rotor R/C helicopter
these models can be found on newmodels.com wicth can be great if you are rich. :D
I acually own one of these jammin ofna minis and boy are these racing ones, these things will last a long time and will rape anything in its path. Also with stand weather conditions the picco racing engine is really what brings these things to life.
Laser pointers are misused when they are directed at people or treated as toys. The light energy from a laser pointer aimed into the eye can be more damaging than staring directly into the sun. And the startling effect of a bright beam of light can cause serious accidents when aimed at a driver in a car, a pilot in a plane, or even a person holding a cup of hot coffee. According to the Laser Institute of America, one woman reported how other mothers she knew bought laser pointers for their children so they could imitate Star Wars characters Luke Skywalker and Darth Vader.
In addition to potentially harming your health, some high-powered pointers can damage your wallet,Consumers who purchase an illegal laser product on the Internet — whether knowingly or unknowingly — may lose their money if the product is manufactured outside the United States, he says. "There is a reasonable risk of having a charge laid against your credit card for goods you're not going to receive because they're going to be blocked by U.S. Customs Protection so watch out when your purchasing lasers :)
Other uses for lasers
Instructors use them to draw attention to information on slide shows. Astronomers use them to point out stars, planets, and other heavenly bodies. And construction workers use them to level and align pipes.