Engineering Unit 1

Skateboards

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  • Created by: Charlotte
  • Created on: 05-04-13 16:55
Deck
The board part, made by compressing many layers of plywood (thin and easily bended) together after coating with epoxy resin. For smaller manufacturers, they may use vacuum pressing
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Truck
The metal part underneath the deck. Aluminium is heated until it is molten, and then it is poured in to a sand casting mould.
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Wheel
A wheel. Made out of polyurethane or nylon. Polyurethane is poured into a mould, and then is turned down to the right size on a lathe.
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Griptape
The grippable surface on top of the deck. It has an abrasive surface to stop the rider from slipping off as easily. Polyester film is coated in epoxy resin, and then silicon carbide is sprayed on top and it is dried with a high powered heat lamp.
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Bearing
Can be made of metal or plastic. Used to hold a rotating part in place, but allows it to move. These are used in the wheels, so they don't wear down as quickly.
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Axle
The long metal bar that is part of the truck. It is the moving part that coordinates the movements of both wheels.
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Hanger
This is the metal part of the truck that hangs down and moves, allowing steering of the skateboard. It is incorporated with the axle.
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Kingpin
The large central bolt in the truck that allows the hanger to pivot, and is attached to the baseplate.
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Baseplate
The metal part that is attached to the deck with screws, and the rest of the truck hangs off/
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Bushings
These are rubbery rings, that are used in the truck, and put around the kingpin. There are 2 in most skateboards, 1 in the middle, that provides springiness for turning. The other is above the hanger, and allows it to be tightened or loosened easier
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Riser
This is a buffer between the truck and the deck, which stops the wheels touching the deck (and stopping the skateboard from moving), and they also act as shockpads, and absorb any shocks so the skateboard lasts longer.
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Other cards in this set

Card 2

Front

The metal part underneath the deck. Aluminium is heated until it is molten, and then it is poured in to a sand casting mould.

Back

Truck

Card 3

Front

A wheel. Made out of polyurethane or nylon. Polyurethane is poured into a mould, and then is turned down to the right size on a lathe.

Back

Preview of the back of card 3

Card 4

Front

The grippable surface on top of the deck. It has an abrasive surface to stop the rider from slipping off as easily. Polyester film is coated in epoxy resin, and then silicon carbide is sprayed on top and it is dried with a high powered heat lamp.

Back

Preview of the back of card 4

Card 5

Front

Can be made of metal or plastic. Used to hold a rotating part in place, but allows it to move. These are used in the wheels, so they don't wear down as quickly.

Back

Preview of the back of card 5
View more cards

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