About a decade ago I wanted something to attach my phone to my bicycle for tracking my rides/accessing maps/listening to music/etc.

Since I worked in a metal fabrication shop, I cut a piece of aluminum, gave it a few bends, and powder coated it.

The holder was attached using the headset cap, locking it securely in place.

This was designed to fit the phone/case combination that I was using at the time, so I needed to make something new when I upgraded my phone.

Our local Markforged reseller (ExBuild) was planning an event and requested "sample parts" to demonstrate their printers.

I decided it was time to redesign my phone mount.

The next version would be centered on the headset cap and designed for 3D printing.

They thought it was a good idea and printed one for me.

It was also used in their demonstrations.

I really liked the way that it blended in with my bike.

This design worked great if the stem was rather “flat,” but if there was any angle/rise to the stem, it would interfere with the holder.

This was the case with my “around town clunker.”

(This is a bike that rides great, but consists of older parts, making it less desirable to bike thieves.)

I decided to keep the same mount design but move it to the top tube of the bike.

Simple enough, just make some clamps that wrap around the tube – this was when I realized that the top tube was oval – which makes the mount less likely to “spin” on the tube - Bonus!

These are the parts for the new mount – NO supports were required when printing, and the small square ‘slots’ on the u-shaped pieces are sized for hex nuts – the whole assembly can be put together with a single hex key.

Here it is installed on the bike –

This was designed in SOLIDWORKS Connected and printed with ABS on a Sindoh 3DWOX1 printer.

(I prefer PLA, but I had some ABS leftover that I wanted to use.) 

And yes, I have them on all my “geared” bikes –