An Ollie is basically an upward/forward jumping trick. The name “ollie” comes from the nickname of Alan Gelfand who created the ollie in 1976. The ollie was then modified for flat-ground use by Rodney Mullen in 1982, and it is this flat-ground version of the ollie which is most commonly referred to as the ‘ollie’ today. The ollie is arguably the most important trick in skateboarding because it is the foundation of the majority of skateboard tricks which require lift. When you want to do a trick like the kickflip, when you want to get onto something like a ledge, or down something like a set of stairs, or try handrails, the ability to ollie is a necessity. Therefore the ability to ollie high and with good control is critical to your total skateboarding skill-set.
The deck is expertly constructed with a vertically laminated bamboo core and bamboo veneer exterior, all attached with triaxial glass and epoxy as well as a course grip tape top. The grip tape is arranged in an unusual and stylish, yet functional design. The 34-inch board features a 13-degree nose angle and a 18-degree tail angle. With its directional shape, you’ll easily be able to cruise on this board or pull a few tricks. It is a lightweight and flexible deck.
In fact, we can work out how you need to steer the skateboard. Tracker has a nice feature that we'll call 'force arrows'. These arrows show you how much force acts on an object at every instant, and in which direction the force acts. So for example, if you were to kick a ball into the air, while the ball was mid-flight, this arrow would always point down and be the same length, even though the ball is moving forward. That's because the only force acting on the ball is gravity, which pulls it straight down, and acts with a constant strength. (For those of you who've studied physics, these arrows denote the acceleration of the center of mass, which by Newton's second law is proportional to the net force acting on the skateboard.)
The wheels of a skateboard are usually made of polyurethane, and come in many different sizes and shapes to suit different types of skating. Larger diameters (55–85 mm) roll faster, and move more easily over cracks in pavement and are better for transition skateboarding. Smaller diameters (48–54 mm) keep the board closer to the ground, require less force to accelerate and produce a lower center of gravity which allows for a better response time, but also make for a slower top speed and are better for street skateboarding. Wheels also are available in a variety of hardnesses usually measured on the Shore durometer "A" scale. Again like car tires, wheels range from the very soft (about Shore A 75) to the very hard (about Shore A 101). As the A scale stops at 100, any wheels labeled 101A or higher are harder, but do not use the appropriate durometer scale. Some wheel manufacturers now use the "B" or "D" scales, which have a larger and more accurate range of hardness. Modern street skaters prefer medium-sized wheels (usually 51–54 mm), as small wheels with lighter trucks can make tricks like kickflips and other flip tricks easier by keeping the center of gravity of the skateboard closer to the deck, thus making the deck easier to spin. Street wheels are harder (A 100/A 101). Vertical ramp or "vert" skating requires larger wheels (usually 55–65 mm), as it involves higher speeds. Vert wheels are also usually slightly softer (A 98/ A 99), allowing them to maintain high speed on ramps without sliding. Slalom skating requires even larger wheels (60–75 mm) to sustain the highest speeds possible. They also need to be soft and have better grip to make the tight and frequent turns in slalom racing. Even larger wheels are used in longboarding and downhill skateboarding. Sizes range from 65 mm to 100 mm. These extreme sizes of wheels almost always have cores of hard plastic that can be made thinner and lighter than a solid polyurethane wheel. They are often used by skateboard videographers as well, as the large soft wheels allow for smooth and easy movement over any terrain.