[Paulina]

Wheels:
Mecanum wheels
• Description – a drive base that uses four wheels and each wheel driven independently. 6, 8 or 10 inch. All have rollers positioned at 45 degree angles.
• Advantage – each can be driven independently.
• Disadvantage - unstable and complex.
Omni wheels
• Description – are used in highly mobile robots, conveyor systems, and material handling equipment.

• Advantages - These wheels provide propulsion in the forward and reverse direction, while allowing for easy, smooth-rolling sideways motion. Plastic Omni Wheels have two bearings in the bore of the wheel, while Aluminum Omni Wheels only have one. Due the this, the Plastic Omni Wheel is more stable and are less likely to tilt under a significant side load.

• Disadvantages - Durability from a severe impact: Aluminum Omni Wheels are more resilient to a significant impact. Aluminum Omni Wheels will bend under this severe impact, while the Plastic Wheel may crack or break.
Colson performance wheel
• Description - a favorite of combat robot builders. The wheels in this series have been used on all sizes of robots, from 1lb Antweights to 340lb SuperHeavyweights! They are very durable, and provide excellent traction.
• Advantage - both hard and soft tread materials in a single wheel. Like a hard tread wheel, Performa rolls easily and is very durable. Like a soft tread wheel, it rolls quietly, protects floors and resists impacts with a cushion ride. It also features maximum weather ability, low temperature flexibility, resistance to chemicals, water and steam, and rejects floor debris such as metal shavings. Non-marking thermoplastic elastomer tread is permanently bonded to durable polyolefin wheel core.Pl
• Disadvantage – slightly heavy
Plaction Wheels
• Description - are constructed of two black polycarbonate plastic halves, fastened together with six #10 screws and nylock nuts.
• Advantages - For easily replacing this tread (if you don't have tread lacing), install rivets into each end of the tread to insure the tread stays put under heavy usage.
• Disadvantages – the treads get worn off and harder to turn due to size.