Water turbine

thingiverse

Update v4 (20190308): This version adds two spur gears, a 24-tooth and a 12-tooth. The 24-tooth gear is driven off the shaft from the impeller, which in turn drives the 12-tooth gear. I chose to use gears instead of a timing belt for motion because driving a belt off the impeller shaft put too much side load on the case and wouldn't spin. Using gears that fit well together results in little power loss compared to a timing belt. The nice thing about gears is that more gears can be added for more speed or to change the direction of travel for the final output. I will have a video out tomorrow explaining some of this, so check it out. I am still working on how to attach the final drive to a motor, and if anyone has any suggestions, let me know! This project is finally becoming interesting. As with all parts, the new ones are compatible with the ones already uploaded. The 24-tooth gear may need to be glued onto the impeller. I am working on a 3D printed washer that can be used with a 3mm bolt. Stay tuned for that. Update v3: This version includes a change to the turbine housing and turbine. All V2 parts are compatible with V3 parts. Housing: The turbine housing was changed to add stability to the back side of the generator shaft when loaded with a motor from the front of the generator. New versions should actually spin when weight is placed on the front-facing output shaft. Housing v2 has been removed due to change. Turbine: I added .5mm discs to both sides of the turbine to aid in keeping the turbine spinning straight against the walls of the housing. V2 has been removed due to change. Update v2: This version works significantly better than V1. The appropriate files end in V2. Housing: The housing entrance has been changed. The water entrance was moved to aid more accurate flow to the blades of the turbine. The housing has also been shaved because having it enclosed wasn't helpful if not hurtful to flow. Exit hole was enlarged. Also added four screw holes on the top section for m2 screws. You can use whatever entrance housing you'd like. Added faucet mount: I've included the faucet mount that I am using for my faucet. Your faucet is most likely different. The housing bolts to the turbine housing via those 2mm screws I just mentioned. The top cover of the top housing uses four 3mm screws. Turbine: The turbine has also been changed. Added a bowl to each blade for better power generation. The shaft was lengthened so both sides are now equal. Both sides can be used for power generation. The bore for the motor shaft has also been enlarged slightly. (I was tired of bending shafts pressing them in) I also tried to add a wall to the outside of the turbine like you see in regular water mills, but this only slowed the turbine down, so I scrapped that idea. Still working on a horizontal version, but the problem is print time and space in the sink. Hardware required for assembly: Three 3mm bolts for housing cover Four 3mm bolts if you decide to use my faucet mount Four 2mm bolts for housing to faucet mount if you Update v1: Here's a water turbine I’m working on, trying to spin a small DC motor. The DC motor shaft is 2mm. The front generator shaft has a 2mm hole and a hole for a 3mm set screw. Change it how you see fit. Printed on an Ender 3. Print time is around 5 hours for all parts at 1.5. Check out progress on this thing: https://www.youtube.com/watch?v=GiE0Ez3LWPU Part 2: https://www.youtube.com/watch?v=TZi7NHIHXD8