Quote from: TheBikeLab on October 19, 2026, 05:07:10 AMDirectly from Tavelo or through some EU distribution. We can do that also.

I am thinking more in terms where to order it from China to get it as cheaply as 1400 Eur.

So my build is almost finished. And so far everything went just fine...but i just cant comprehend how to use this D-shaped epander plug.

When the expander is completely loose, it fits into the steerer tube. However, when I turn the Allen bolt from the top, the two internal wedge pieces don't engage with each other, so the expander doesn't tighten.

When I connect the two wedge pieces beforehand by threading the bolt in just one or two turns, the expander already becomes too wide to fit into the steerer tube.

Outside the fork, the mechanism works perfectly. The threads engage smoothly and the expander tightens as intended.

So essentially, I can't get the threads to engage once the expander is inside the steerer tube, but connecting them beforehand makes the expander too wide to insert.

I've attached a few photos to illustrate the mechanism.

Does someone have an idea how this should work?

I read in the Tavelo Arow Thread (page 13) that there was an answer by tavelo

"The expander requires a specialized installation process, which we will detail in a comprehensive "User Instruction Manual" to facilitate proper installation and disassembly." But of course this cannot be found anywhere.

The expander plug on the Tavelo Arow was a pain too. Anytime I would race on the bike I would always end up with the slightest of headset play afterwards. It wasn't a bearing or spacer issue either.

In theory a D-shaped steer tube offers better hydraulic cable clearance. But I've never had routing issues ever with round tubes.

Hi Members maybe this will help. Attached is the Tavelo Arden build instructions.