Each skateboard wheel is mounted on its axle via two bearings. With few exceptions, the bearings are the industrial standard "608" size, with a bore of 8 mm (or 10mm depending on the axle), an outer diameter of 22 mm, and a width of 7 mm. These are usually made of steel, though silicon nitride, a high-tech ceramic, is sometimes used. Many skateboard bearings are graded according to the ABEC scale. The scale starts with ABEC1 as the lowest, followed by 3, 5, 7, and 9. It is a common misconception that the higher ABECs are better for skateboarding, as the ABEC rating only measures tolerances, which do not necessarily apply to skateboards. Bearing performance is determined by how well maintained the bearings are. Maintenance on bearings includes periodically cleaning and lubricating them [1]. Bearings that are kept unmaintained have their performance greatly lowered and will soon need to be replaced. Bearing cleaning kits are commonly available on the market. The ABEC rating does not determine the speed or durability of a skateboard bearing. In particular, the ABEC rating says nothing about how well a bearing handles axial (side-to-side) loads, which are severe in most skateboard applications. Many companies do not show the ABEC rating, such as Bones Bearings, which makes bearings specifically for skateboarding, often marketed as "Skate Rated". Each bearing usually contains 7 steel or ceramic bearing balls, although other configurations are used as well.
Today, many riders use the “ollie-pop” on more than just the flat-level surfaces in between other tricks, it’s used heavily in the half-pipe and bowl ramps to allow the rider to go even higher in the air. Performing the “ollie-pop” while you’re at or near the top of the lip is a great way to get an extra couple feet, which might be all you need to get that extra turn in and nail the 720 (or 900, if you’re Tony Hawk).

The Powell Golden Dragon 2 Skateboard is an affordable and complete skateboard for the beginners and also for the advanced skaters.  It has high-rebound, hand-cast polyurethane wheels to give you a great roll and grip.  It measures 7.5 inches wide with a colorful screen-printed bottom.  It is made in China and has an average rating of 4.2 on Amazon.
My son seems to have a lot of fun riding this skateboard. He will be out there doing tricks for hours. One evening when he took a break, I decided to see if I could still ride. When I took off down the driveway, I could feel how smoothly the wheels rolled. I used to have to pay extra for wheels like this when I was his age. Lost in thought, I coasted faster, and my neighbour didn't see me when I shot out of the driveway. Even though this thing flew several feet in the air, bounced, and came to rest more than 20 feet away, it had no visible damage! Not so for me. I loved the skateboard, but am now recovering from two broken ribs, torn neck cartilage, and a cracked pelvis. Still, this board rides like a dream!
Place your back foot on the edge of the tail (this is where you will apply a burst of force to the skateboard) and prepare to exert force through the foot’s ‘big-toe-mound’ area. Place your front foot behind the front bolts. Make sure the weight bearing down on your feet, as well as the weight of your body, is generally centered over the ‘middle line’ of your skateboard.
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.)
Mounting hardware is a set of eight 10-32 UNF bolts, usually an Allen or Phillips head, and matching nylon locknuts. They are used to attach the trucks (and any type of risers) to the board. Some sets have one different colored bolt to show which side is the nose of the skateboard. Hardware is available in various lengths for mounting trucks with or without risers.

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Taotao Girls Skateboards comply to United State Consumer Product Safety Commission (CPSC) Standard.  It has a 24″ X 6″ Maple Double Kickside Deck. It features 608Z Bearings, 3.5″ Plastic Truck & Base, and 50 x 30 mm PVC Wheels.  The Safety helmet, Knee and  Elbow Pads also comply to CPSC Standard.  It has a Cool Pink Aloha Graphic Design with an Amazon rating of 4.3.
I’m 31 and I just started skating too. I can ollie but they fluctuate a lot. I’ll do well certain day and certain day I won’t do well. It’s frustrating sometimes but I’m hooked. I go skating with my 5 year old son. He’s already practicing ollie. I think he’ll out do me soon. Man he picks up so fast like a sponge. Can’t wait till I can get all my basic tricks down so I can have more fun with them!
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