Mechanical Power Transmission Without Gears Using Six Elbow Links

Abstract -Efficient power transmission with minimal energy loss is a key factor in determining the overall performance of any mechanical system. Conventional machines commonly use gear mechanisms to transfer motion from input to output shafts. However, gear-based transmission systems often experience significant power losses due to friction, wear, noise, and maintenance requirements.To overcome these limitations, this study presents an alternative gearless power transmission mechanism designed for right-angle motion transfer. The proposed system replaces conventional bevel gears with a set of 90° elbow rods to transmit rotary motion efficiently. The mechanism consists of six elbow rods arranged radially at 60° intervals around a central axis. Keywords: Elbows, Housings, Power transmission, Design stresses.