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Chinese Carbon Road Bikes => Road Bike Frames, Wheels & Components => Topic started by: mynameiswilson on July 17, 2022, 10:45:23 AM

Title: VBR-177 Derailleur Hanger Q
Post by: mynameiswilson on July 17, 2022, 10:45:23 AM

Hello all -

I've built my VBR-177 and have put about 100km / 600 miles on it. Loving it so far, BUT I am having an issue with the rear hanger.

The 177 has a two-piece hanger / collar situation. It's two pieces, and is held together with a single stainless bolt. This bolt regularly loosens, leading to a creak and eventually the axle coming out of the frame. I've greased it an reseated, and it still came apart.
I've just now put some thread-locker on the screw.

I've included a crude diagram.

So, three questions:

1. Anyone else have and solve this?

2. I'm using the stock thru-axle. Is it threaded through as much as it should be?

3. Mechanically speaking, does this not happen?

Title: Re: VBR-177 Derailleur Hanger Q
Post by: eucalyptus on July 17, 2022, 10:52:51 AM

Of course you should use Loctite on that screw! Blue 243 should do the job

Title: Re: VBR-177 Derailleur Hanger Q
Post by: mynameiswilson on July 17, 2022, 11:23:16 AM

Thanks - I've done that and will report back soon!

Anyone else have any responses to the other Qs?

Title: Re: VBR-177 Derailleur Hanger Q
Post by: Irideslowly on July 17, 2022, 12:08:25 PM

The t-a looks a bit short.

Title: Re: VBR-177 Derailleur Hanger Q
Post by: mynameiswilson on July 18, 2022, 05:32:11 PM

I've also discussed this with a mechanical engineer friends (who builds bikes) - and he has the same suspicions as I do: that this setup does not anchor the TA to the drive-side of the frame, save for that one little tiny screw.

But: I've emailed Chris at Velobuild. Will let you know.