Bicycle work, maintenance and cleaning stand

As common with most e-bikes, it is not possible to freely rotate the chain on my bike while it is stationary. A dedicated bike maintenance holder is useful, but it's not really a solution if you either don't have the space or the time to take it with you. 

This is my solution: a lightweight option that you can take with you wherever you want to maintain your bike. It's small and easy to store, whether you're doing this task at work or in any other sheltered place.

Simply place your bicycle's rear wheel on the rollers and you can spin it easily with minimal force. However, as this raises the back wheel slightly, your kickstand might not be long enough to keep your bike safely upright. To compensate for this, I added a kickstand holder that adjusts the offset height, so you can work on your bike without worrying about it tipping over.

The entire construction is based on 20x20 mm aluminium profiles, type 5.

Required materials:

• 2x 20x20 mm Type 5 aluminium extrusion, 100 mm long.
• 2x 20x20 mm Type 5 aluminium extrusions, 340 mm long (this works fine with 28" wheels, but you can use longer extrusions).
• 8x bearings, 608 2Z (8x22x7 mm).
• 2x 8 mm steel rods, each 138 mm long.
• 4x base parts (printed) – use hard TPU; TPU for AMS is perfect here.
• 4x holder parts (printed) – PETG is fine and PLA should also work.
• 4x corner brackets (printed) – PETG is fine, but PLA should also work.
• 4x roller halves (printed) – use PETG or something stronger. If you drive with spikes in winter (props to you!), use TPU as the spikes will shred PETG or ASA really quickly!
• 1x kickstand holder (printed) – TPU works well as it does not slip easily.
• 32x M5 T-slot nuts (for your chosen aluminium profile type).
• 16x M5x8 countersunk socket head cap screws (DIN EN ISO 10642)
• 16x M5x10 hexagon socket head cap screws (DIN EN ISO 4762)
• 8x M2x5 set screws (ISO 4027) - to secure the 8 mm steel rods.
• 8x M2 heat set inserts (I went with Ruthex ones) - for the holder parts
   

The aluminium profile extrusion can also be connected in a more permanent way by tapping the short sections at both ends and drilling holes in the long extrusions. These can then be secured with four additional fasteners. (I have a model for a drilling guide for this.)

The assembly process is fairly simple, just make sure you insert enough T-slot nuts. Do one side first, then the second half, so that you can easily add more nuts.

You could also 3D print the aluminium extrusions, especially the short ones, but the profile is not too expensive and is very rigid.