Electric Longboard Motor Mount

thingiverse

Make sure when you print the bottom half of the motor mount you mirror it for one of the sides of your trucks.Ignore the two black wires on the bottom of the threaded rods, that was just to hang it on a wall while I worked on it. 6/1/15 I posted the final models and have mounted a motor. There is zero motor slipping, which makes this appear to be the first motor mount that requires zero metal working! I have nu problems with this design so I likely won't change it past this model. Also, the 52 tooth belt appears perfectly fine. 3/14/16 The lock nut on the rod close to the pully was a little too close for my liking, so i made a cut out so that it sits flush, model 4.6. It will all depend on your belt thickness and truck length if you want to use this. I am using a 9mm belt thickness which is very close to touching the mount. Be aware of your center distance, as I initially modeled one which was incorrect. A GREAT calculator for this is this https://sdp-si.com/eStore/CenterDistanceDesigner. I am currently using a 149 kv motor with a 14 tooth pulley to a 28 tooth pulley, which I posted the models to, though this was not the configuration I wanted. I would prefer to use a 15 to 32 tooth pulley. I was dumb and bought a 52 tooth belt which was far too short, so I had to shorten the center distance to make it BARELY fit. This design is intended to have nuts between the motor and the mount to allow for belt tension, but 52 tooth belt is too short for that I believe. I have not yet tested that. In order for that to work, I would need a 90-100 mm center distance. With a 52 tooth belt, a 14 tooth small pulley and a 28 tooth big pulley I barely manage 76. I would recommend buying a 60-70 tooth belt (I eventually), and using the 15 tooth and 32 tooth gear. I have not made models for this, but if someone wants one contact me at 3.14forpie@gmail.com and I will make them for you. I have also posted models for pieces which fill the inside of the wheel. They ensure perfect fit within my boards wheels, and are separate from the pulley so I can easily change out the side of the pulley without having to reprint the entire model. I will post pictures once I drill out my wheel, which will be on Monday. Also, The mount is extremely strong with very little flex to it. I doubt I will have any issues with slack in the belt. Eventually I might try and print it in nylon. I have developed a method which allows me to print nylon without a heated bed, but its extremely tedious and I would rather avoid doing it for everything but the most necessary parts. I also know not everyone can print in nylon, so I would like to avoid that for their sake. At the moment everything is holding strong. 4/11/16 Long board motor mounting system using 7.6mm/.3in thick threaded rod with lock nuts and 3d printed parts. This is my solution for building a strong, no flex motor mount without having to custom machine metal parts. This is an in progress project, and more updates will be posted within the next few days.