rov thruster

thingiverse

I modified this amazing design to suit my needs by installing it at the bottom of my kayak. The original can be found here: https://www.thingiverse.com/thing:728893. I merged the propeller with a 3mm center hole and included files for the original propeller. The original was very tight, so after a lot of sanding on blade joints, I wound up cracking three top caps before remixing the single-piece propeller. I tested the propeller with an 850kv 40mm motor on a 3s lipo battery in the pool and it performed at around 6k rpm (2/3 throttle) outperforming my 18lb thrust trolling motor. I'm waiting for the recommended 2836 750kv brushless motor to arrive, which was designed to suit the NTM Prop Drive Series 28-30A 750kv / 140w from Hobby King. We also purchased the NTM Prop Drive 28 Series Accessory Pack to mount the motor. Once I get it tweaked and tested, I'll design my own and post it. I printed the propeller in PETG with a 20% infill and support, three wall lines, and it's plenty strong. I redesigned a propeller to fit the 2836 motor. My first test video with the Turnigy 2836 750kv on an 80amp ESC and 3s lipo is here: https://www.youtube.com/watch?v=gvSjDreZjB0&t=7s. In the water, pushing my kayak with a 230lb load at 3.4mph on a 12v mower battery is incredible. See it for yourself: https://www.youtube.com/watch?v=umpdH3034c4. Thanks! 6-20-18 (I'll add new files in a few days.) I removed 2.5 degrees of pitch per blade and installed two on my kayak, achieving a top speed of 5mph.