Étiquette : tool

Tool holder for my Teammachine SLR bottle cage

Riding without a tool isn’t an option for me… and forgetting to bring one is definitely something I want to avoid. Riding with pockets full of gear isn’t very pleasant either. So, reusing a Specialized SWAT Road tool and designing a tool holder that attaches under the bottle cage specific to the BMC Teammachine SLR was a cool project to work on.

  • The tool holder at the bottom of the SLR bottle cage
  • Tool in grey fitted into the holder
  • Detail of the ramps holding the tool in place
  • Final print on the bike with the tool
  • Tool out
  • Tool in

The tool holder clips securely at the back of the bottle, preventing it from moving or vibrating. A small fixing tab slides under the bottle cage and attaches to the lower bolt, sandwiching the whole setup in place. The tool is inserted into the holder from below, so you don’t need to remove the bottle to access it. The tool’s outer shape locks into the ramps of the holder, keeping it securely in place during the ride. The top face of the holder acts like a spring clip to hold the tool in position.

The attachment is solid, the tool stays in place, and the aesthetics are still as sharp as ever on the Teammachine SLR handlebars.

I have not shared this design as it’s quite specific to my own needs. Feel free to reach out if you need help.

Chainline tool: the ChainLineR

At work, I often need to quickly check the chainline of a crankset assembly. The ChainLineR is a simple gauge designed to make this process faster and easier, allowing you to measure your bike’s chainline and verify if it’s within the recommended specs for Shimano, SRAM, or Campagnolo.

  • The model
  • The 3D print
  • On a fixed gear bike
  • On a road bike with 2x crankset

While you can use a caliper to do this, it can be tricky to find a clear reference point to identify the center of the seat tube (e.g., the bottle cage bolt). The V-shaped design of the ChainLineR allows you to quickly center it on the seat tube or downtube, providing a rough but reliable reading of your chainline using millimeter markings.

An additional stopper allow you to place a ruller and get a more accurate read.

How to use:

  1. Position the ChainLineR on any symmetrical part of your bike—ideally the seat tube or downtube.
  2. Use the millimeter markings to read the chainline measurement.

Notes:

  • Some tubes may be asymmetrical.
  • The chainline for 2x setups is measured differently depending on the manufacturer. For example, Shimano measures from the inside of the larger chainring’s teeth.

Thingiverse:
https://www.thingiverse.com/thing:5519359