VeloBuild VB-TT-023

[Hmpf]

Handlebar problem solved!
The support was great - they sent a new stem and handlebars.
I re-routed the brake lines and used sturdy downhill lines.
I greased the contact surfaces on the handlebars and stem really thickly with carbon grease.
Screws tightened crosswise in 0.2 Nm increments up to 4.4 Nm. Holds bombproof, tested for 530 km, even on potholes.

It was probably due to the paint on the clamping surfaces or the grip film on the handlebars, or it was a material defect. Because I did the same with the old stem and handlebars, also tried till 5Nm and had still the issue.
Just a theory, but now everything fits!

Many thanks for your help and thanks to velobuild!

[Juul]

Handlebar problem solved!
The support was great - they sent a new stem and handlebars.

Great to hear! Did my first outdoor ride on the bike today.. handlebars slipped and indeed pinched the brake ducts.
Got back home safely, redid the cockpit, and torqued to 4NM.. everything seems to be ok now.

Just another thing: are you handlebars also 'super' flexy? If I'm in the aero position, the flex is not noticeable. But if i hold the bars at the brakes, the flex is super noticeable. Especially when putting power down after corners
I would suspect that the carbon was super stiff.. but apparantly not

[Hmpf]

The Basebar doesn't flex any more than the carbon handlebars on my road bikes.
The flex was one of the reasons why I switched to carbon. It is more comfortable.

Theoretically, the center of gravity is somewhere else on the TT, so more weight is placed on the basebar. Maybe that's why it works like that.

After fitting the new cockpit, I stood in front of the bike, grabbed the outside of the basebar and pulled and pushed myself up with my whole body weight - as an additional test to make sure everything was really secure.