Bike Requirements

1. Sustain the Weight

1.1. High strength

1.1.1. Seat Bar

1.1.2. Handle bar

1.1.3. Cold-rolled metals

1.2. Spacious

1.2.1. Large bikes

1.3. Relatively Light Weight

2. Road Bike

2.1. High Stiffness

2.1.1. Cold Rolled metals

2.2. High Resilience

2.3. Corrosion Resistance

3. Cost

3.1. $800

3.2. Ti very expensive

3.3. Steel, Al