Simple Torque Convertor

thingiverse

This is a proof-of-concept for a basic Torque Converter suitable for small mechanical gadgets, like toy racers, which could benefit from a smooth acceleration. The unit needs to be lubricated with oil before functioning and sealed to maintain the fluid inside using an adhesive. Performance is satisfactory between 200rpm to 1500 rpm, boasting an output ratio of approximately 7:1. Efficiency-wise, it's energy-inefficient as expected; if that wasn't self-evident already. Any suggestions for improvement in the design are warmly welcomed! Instructions This creation was designed with SketchUp. To function, the device requires thin oil and gluing. The small rotor functions as a pump and needs connection to a motor while the large rotor connects to gears through holes meant for 4mm rods. I printed out the prototype, glued axles onto it, and filled it with thin oil, though that proved ineffective due to leaks, prompting me to substitute it with Castrol EPX Axle fluid 80W-90. As expected, moving the pump rotor prompted the output rotor's rotation; a positive indication. Following this experiment, I patiently awaited for it to dry and prepared for attachment of an engine. However, that was not without challenges: I failed to add sufficient oil prior to sealing the device with adhesive. Consequently, operation at higher RPM led to stalling of the output rotor. Investigation led me to assume inadequate lubrication within the housing, caused by using oil with viscosity that was too high - the 80W-90 variety being an offender. I took measures by drilling a hole and adding thinner oil before sealing it with a screw. Lo and behold, it now functions effectively. Future adjustments could include redesigning the unit to allow easy refueling. Its current state, sadly, is riddled with leaks, necessitating refill after roughly ten minutes of continuous high-RPM usage. Solutions are being sought for this predicament. Best regards Dustin