The History of Skateboarding
The Science and Art of Skateboarding Design
Physics Terms Glossary
  

The History of Skateboarding 

Skateboarding, a young sport of which no one truly knows the origin. Many stories revolve around the invention of skateboarding. Some believe that skating began on the surfing beaches of California, USA in 50's by surfers who put rollerskates on surfboard. At first boarding was known as a type of sidewalk surfing which was done when the waves were to small to go out surfing. 

The origins of skateboarding are reflected in the design of the earlier skateboards which looked like surfboards. The boards were narrow (4in, 10cm) and much shorter than boards now and the 'sidewalk surfers' from the 50's would ride in bare feet and in more sideways stance than we do today. All they would have been able to do is ride up and down sidewalk and turn by leaning in the direction they wanted to go. 

The first manufactured boards came in 1965. They were inch-thick wooden boards, with narrow cast-iron trucks and hard rubber wheels. Soon, races down the sidewalk began to vary and competitions between skateboarders were born: free style, slalom, downhill, high jump and long jump. 

In the mid-70's skaters started using drainage channels and routes up the slopes around buildings for skateboarding. This opened up the new world of tricks. Skateboarders soon discovered bank skating and they soon were able to manoeuvering their bodies more skillfully. Vert skating then began by using back yard swimming pools. All you needed was a little but of extra speed and you could ride your board up the wall, or so they thought. It was a bit more complicated than that. 1) Pool owners didn't like their swimming pools being used for skateboarding 2) Pools weren't rounded enough. Transitions were to vertical to fast and it would launch them into the air, and even if they could stay on, they would not have enough speed to get up the other side. Skateboarding quickly developed in the US and soon skateparks were built. Pools were built with more rounded sides and then lay-outs for bank and freestylers were built. 

Until the early eighties, parks were the main hang-out for boarders. Competitions and tournaments were organized for them and soon pool and vert skating became the most popular specialist form of boarding. Vert skating was most spectacular of the forms. It was incredibly difficult and demanding, which encouraged more changes to be made on the skateboard. The manufacturers built them wider for better stability and changed the old rubber wheels with polyurethane wheels which proved to be faster and had more grip as well. Barefoot skating was now forgotten except by a few of the old die-hard 'sidewalk surfers'. The new skaters figured out that gym shoes had more stability and didn't hurt as bad when you wipe-out. 

In 1980 skateboarding arrived in Europe, where free style, slalom and high jump became the disciplines of choice. But in both countries it was still considered to be just another craze that would pass so it was not considered to ever be a competitive sport. Early eighties arrived with a dive in the skateboarding popularity. It happened almost within a single season. Skateparks closed the doors, manufacturers stopped manufacturing, and worst of all, skateboard magazines switched over to BMXing and rollerskating. But a few hard-core skaters kept on going in both of the continents. Those dedicated skaters advanced skateboarding by creating their own techniques, writing their own magazines, and building some of their own boards and layouts. 

This was when half-pipes arrived. Simpler and cheaper than pools, they could be built by the skater himself. Half-pipes were usually built of wood and were U-shaped with a ten-foot radius transition on either side with a flat area in the middle, large enough to give you time to concentrate and get speed before hitting the transition. 

Boarding became unpopular with the public, which in turn pushed the skating scene 'underground'. This might have stifled it but because of the small, but committed group of skateboarder, the sport entered it's most creative stage. Skaters became so envolved with their sport that they wanted nothing else. It was not really a sport, but was becoming a life-style. If not for the commitment of the few, this sport could not have survived the hard times. 

Skateboarding soon became a mode of transportation. Skaters would go through any and all obstacles in their path. They could, and would, bring their boards anywhere and everywhere. In the early 80's, street skating was born. This new art was free of half-pipes and parks, the skater could DO what he wanted ON what he wanted. Tricks were used in street skating that, before, had only been used by vert skaters. Street ollies, slide'n'rolls, and kerb grinds (most of which have different names now) are classic as street skaters moves, all of which were made by vert skaters. 

Street skating is still probably one of the most popular forms of boarding. Every skater is a street skater because that's where his roots are from. It's just that some skaters forget a few things along the way. 

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The Science and Art of Skateboard Design 

What is a skateboard? 

Is it just a glorified plank with roller skate wheels on it? Or is it a highly engineered device through which kids have reclaimed the urban landscape, bringing creativity and style back to the sterile asphalt spaces of sprawl? The basic elements of the skateboard seem pretty straightforward. A board has three parts: the board or deck, the wheels, and the trucks, which connect the wheels to the board, and allow the board to turn. 

Boards, wheels, trucks 

But how do you get from this relatively simple mechanism to the perfectly balanced vehicle, the tool for endless creativity on the ramps and streets? We talked to two of the leaders in the design and production of skateboards, Tim Piumarta of NHS Inc., and Fausto Vitello of the Ermico Foundry, manufacturers of Independent Trucks, to find out about the mixture of industrial science and "feel" that goes into a great board. 

Plank, deck, or board: whatever you call it, wood is the thing 

Tim Piumarta has been one of the most influential skateboard gear designers over the past 20 years, as the R&D guru of NHS, creators of Santa Cruz Skateboards, Road Rider Wheels, and much more. He described to us the process of making a modern skateboard: 


"Modern skateboards are made traditionally from 7 plies of sugar maple veneers, pressed together using polyvinyl glues in either aluminum, metal or concrete forms, generally taking around 300 psi to take up multiple skateboards in one closing of a press. Anywhere from 3-5 skateboards are done in one press, and after 30 minutes to an hour, the boards are removed from the press. At this point they have been stuck and laminated in the compound curve or the shape, which is the concave. Then after days of curing, the CNC routers, or hand routers depending on the woodshop, will cut out the final shape, apply the edge trimming, paint it and send it on its way."
Why maple wood? Piumarta described the unique characteristics of wood. "With all the alternate materials we've tried, from epoxy and fiberglass to carbon loaded thermoplastic nylon, nothing has had the combination of toughness, elasticity, feel and response of laminated sugar maple board." 

Concaves, kicktales, nose 

Piumarta was one of the first designers to put concave curves into boards in the early 1980's, and developed the first upturned nose. When skaters refer to "concave" they are talking about the way that the board curves up at its edges, nose and tail. This curvature both strengthens the board and gives the rider more control of the board. 


"There's two shapes you talk about when you look at performance: of a skateboard: number one is the concave, the 3-dimensional curves that are in the board itself, nose, tail and side to side concave. Every manufacturer has their own style or philosophy. Mine is based on actual functionality; what your foot feels like when it's in the concave itself. To get there, I do a lot of prototyping in foam cutting, letting all of our pro and amateur riders have a say in what feels good and what works before we go and cut tooling to make skateboards. So our approach is based on a feel functionality first, and then secondly, when no one's looking, I slip in curves and bends engineered into this 3-d curve, the concave, that makes the board stiffer, stronger, and makes it last longer."
The other shape is called the plan form. This is the shape of the board's outline; if you put a board flat up against the wall and traced its outline, you would be drawing the plan form. According to Piumarta, this shape is largely determined by the choices of individual riders. "Now the other shape we're talking about is the plan form, or the shape outline of the board of looking at a wall. Pro riders can tell by looking and feeling with their hand, they can tell if a board is out of shape by even fifty thousandths of an inch. They can feel it, they know what they like, and what they don't like." And, as Piumarta says, all the engineering in the world means nothing if it doesn't result in a good ride. 
 
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Physics Terms Glossary 

centripetal force: a force that keeps a body moving in a circular path 

rotational inertia: a measure of an object's resistance to being turned, depending on both the mass of the object and how that mass is distributed 

work: force applied over a distance-for example, you do work when you push a box across the floor, but not when you push on a locked door; work done on an object or system results in an increase in the energy of that system 

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