DIY Electric bike (motor mount & pulley)

by StantonFrames, published

DIY Electric bike (motor mount & pulley) by StantonFrames Mar 21, 2017
0 Share
Download All Files

Thing Apps Enabled

Order This Printed View All Apps


Use This Project

Give a Shout Out

If you print this Thing and display it in public proudly give attribution by printing and displaying this tag.

Print Thing Tag

Thing Statistics

51465Views 3121Downloads Found in DIY


Building a homemade electric bike using 3D printed parts! It was definitely a learning curve, but it worked out pretty well! https://youtu.be/9rIIJbDkpN8

If you would like to build the same setup, I have listed the parts required below. As mentioned in the video, I would really appreciate it if you purchased the parts via my affiliate links to support my work. Thanks!

Parts List
Bike: https://goo.gl/h2GIVm (UK)
https://goo.gl/MNdU2O (USA)
3D Printed parts:
Motor: https://goo.gl/3HFwXg
VESC: http://vedder.se/2015/01/vesc-open-source-esc/
Electric scooter throttle: https://goo.gl/yvloKG
Saddle bag: https://goo.gl/ilyxSJ
6s 5000mah li-po battery
HTD5 12T pulley (with 8mm bore for motor shaft)
HTD5 800x15mm belt
5pcs m4x30mm bolts (clamp motor mount to frame)
4pcs m4x10mm bolts (attach motor to mount)
1pcs m4x50mm bolt (roller bearings seat on this bolt)
5pcs m4 nyloc nuts
3pcs m3x10mm bolts (assembly of electronics case)
5mm wide cable ties (attach pulley to spokes)
EC5 battery connectors
4mm bullet connectors (for ESC)
Basic knowledge of electronics and soldering
and a 3D printer...

Also, the VESC is capable of using the electric scooter 'analog signal' and an input, so the arduino isn't required.

Note: The 3D printed brackets/pulley were designed specifically for the bike used in the video, it will not fit any other bike and I will not be modifying it on request to fit to other bikes.

Disclaimer: I do not hold responsibility for any wrongful riding if you chose to build this ebike. It is beyond the legal limit (250w) for an electric bike, which is why I chose to ride it within the grounds of my university.

More from DIY

view more

All Apps

3D Print your file with 3D Hubs, the world’s largest online marketplace for 3D printing services.

App Info Launch App

Auto-magically prepare your 3D models for 3D printing. A cloud based 3D models Preparing and Healing solution for 3D Printing, MakePrintable provides features for model repairing, wall thickness...

App Info Launch App

Kiri:Moto is an integrated cloud-based slicer and tool-path generator for 3D Printing, CAM / CNC and Laser cutting. *** 3D printing mode provides model slicing and GCode output using built-in...

App Info Launch App
KiriMoto Thing App

With 3D Slash, you can edit 3d models like a stonecutter. A unique interface: as fun as a building game! The perfect tool for non-designers and children to create in 3D.

App Info Launch App

Print through a distributed network of 3D printing enthusiasts from across the US, at a fraction of the cost of the competitors. We want to change the world for the better through technology, an...

App Info Launch App

Quickly Scale, Mirror or Cut your 3D Models

App Info Launch App

3D Print a wide range of designs with Treatstock. Easy to use tools to get the perfect result. The global 3D printing network that connects you with high-quality and fast working print services nea...

App Info Launch App
Comments deleted.

Is this kind of motor water resistant? So does rain matter? I wonder to see the copper ... do you have experience with this?

This is a brushless motor, and all brushless motors are waterproof. All other electronic components, ie. the speed controller, battery; are not waterproof. So, it's totally fine in the rain, as long as the speed controller and battery are sealed in some sort of container.

Can you post the cad Files too? I'd like to make some modifications

This motor is rated for almost 3.1kw, pretty impressive for something so light. Are there any commercially available Vesc's that you would recommend? I would like to try a more plug and play solution just to get one working and then maybe experiment with the open source stuff.

What type of filament?

In the video he mentions using PLA but is not sure about how well the plastic will perform under load, as PLA has a tendency to deform above 60C.

Can't thank you enough for making all of this readily available, awesome work Tom! Also, if you were going to print these parts again for another bike... Would you do the Motor fan for the turnigy 6374 again? Does the motor get any warmer without the fan?

Comments deleted.

How much would all the parts cost?

Nice, thank you Tom.
Does that motor bearings handle the side force from driving the belt? Cheers.

hi what cad & program did you use to create the pulley?

is there drag form the motor when you are pedaling?

brilliant ! thanks for sharing this gives me so many ideas

One of the coolest projects I've seen on Thingiverse yet! Great work and I can't wait to see more of your future designs and reiterations.

good project! i have the same motor for my electric kick scooter project (oxelo town 9) but is not easy... :-(
what's your max speed?

Hi nice video and build. Is it posible to scale down your pulley? And how do I do it? I am also making a diy project with four motors, but need a smaller pulley like yours. Thanks

Just saw your video, this is very cool. I'll be showing this to my kids. Thank you!

vesc can use analog signal directly

A thing of concern to me is that everything is open for water and dirt, how well do you think this fares when going home in the rain? Those lipo batteries are packing a mighty spark...

just close it in a 3d print box... i think you can DIY for real

I think weatherproofing a diy project like this is def possible as part of the next steps--but as I'm getting ready to spray rust inhibitor in my new frame, I'm wondering if it'd still involve a decent amt of r&d'ering..

Even with only riding it for longer but still partial day trips when rain/clouds aren't forecasted, and having it enclosed well enough to protect from random puddles and dust, there are still a lot of bump/vibrational forces that're going to be getting transmitted through the frame