BMX
Bike components
Inputs
Tire
Suspension
Axel
Chain
Frame
Bearings
Handle
Outputs
Bike
mobility device
Side Effects
Hurting yourself
breaking the bike
Process
Connecting the pieces of the bike
Social Sub-System
Inputs
Money
Labor
Time
Outputs
BMX Race
People that want to watch
A profitable event
Side Effects
Injury/angry fans
People cancelling
Not selling enough tickets
Process
Setting up the food
Setting up the stands
Setting up the track
Getting the people to join