Laser-Cut Parts

The bike's rigid frame is made out of MDF 5mm. You will need a laser cutter to manufacture those pieces in a precise way.

Files for laser-cutting MDF parts are provided. There are two things to point out, though:

• Some of the screw holes were not added to the CAD. Hence, you might have to drill additional screw holes yourself if they are not already laser-cut.

• You might want to add a hole in one of the MDF parts to make the bottom pulley in front of the motor visible. In our original design, one has to disassemble a significant part of the bicycle before one can even see the bottom pulley, which caused us some problems for debugging.

Following is the list of parts to be laser-cut in an MDF plate, divided into two parts:

1. Parts for the bicycle itself.
2. Parts for the bicycle's stand. Those are not necessary if you only want to build the bike.

TIP

You can download all of the .dxf files as a single .zip with this link.

Bicycle Parts

MDF parts to be laser-cut for the bicycle itself form the rigid frame of the bicycle.

Preview of the rigid frame

Preview	File	Qty
	bicycle-mdf-bottom.dxf	1
	bicycle-mdf-flywheel-holder.dxf	1
	bicycle-mdf-flywheel-motor-plate.dxf	1
	bicycle-mdf-front-wheel-fork-holder.dxf	1
	bicycle-mdf-lipo-protection-circuit-support.dxf	1
	bicycle-mdf-servo-holder.dxf	1
	bicycle-mdf-shaft-holder.dxf	1
	bicycle-mdf-side.dxf	2
	bicycle-mdf-top.dxf	1

Stand Parts

We designed a stand to put the bike on when it is not balancing. Those are the parts needed to manufacture it.

Preview of the stand with the bike on

Preview of the stand without the bike

Preview	File	Qty
	stand-diagonal-side.dxf	4
	stand-diagonal-support.dxf	4
	stand-plate.dxf	1
	stand-vertical-side.dxf	4
	stand-vertical-support.dxf	4

Once you have 3D-printed necessary parts and laser-cut others, you still need to manufacture a central piece of the bicycle: the metal shaft for the flywheel. This is the subject of the next section.