The inside black portion of these wheels are made from molded polycarbonate plastic. The outer tread is TPU (Thermoplastic PolyUrethane). This robust but lightweight wheel provides good traction on carpet and soft tiles. Stealth wheels are the perfect drive wheel for smaller (<50 lb.) robots, and both Stealth and Sushi rollers are great for intakes and other auxiliary robot mechanisms. These wheels are available in a variety of bores and durometers. 3 in. and 4 in. Stealth Wheels feature a 6 bolt pattern on a 1.875 in. bolt circle for mounting sprockets, hubs, and gears. Nub Bore Stealth Wheels feature a 4 bolt pattern on a 16 mm bolt circle found in most FIRST Tech Challenge building systems. The lower the durometer the softer the wheel is, this makes it wear away faster, but also makes it more grippy.
Stealth and Sushi Wheels
- Bore: 1/2 in. Hex, 3/8 in. Hex, Nub Bore, 5 mm Hex
- Diameter: 1 in., 2 in., 3 in., 4 in.
- Durometer: 35A (Green), ⠀40A (Orange), ⠀50A (Blue), ⠀60A (Black), ⠀80A (Gray)
- Hole Pattern: 6 holes (0.159 in.) on a 1.875 in. bolt circle, Qty 4 3.5 mm Holes on a 16 mm Circle
- Material: TPU, Polycarbonate
- Weight: 0.03lbs, 0.1lbs, 0.17lbs, 0.3lbs
- Width: 1 in.
Many thread locking materials are not compatible with polycarbonate and can eat away at the plastic. Be sure to check which adhesives are okay to use with this product.