The main challenge with the design is that the spacing between the gears is too tight. The current design causes the large gears to press onto each other, increasing the friction of the overall design. Spacers were placed to increase the gap, but the gears started to tilt. When a simplified needle and amplifier was attached, small parts of a song was heard, but was too fast to be coherent. A complete redesign would be required to reduce the gear sizes and ratio for the record player to work.