Steerer bung loosening

by wheelz   January 28, 2014  

Hi all,

I've recently obtained a Dolan alley frame, its got an inch carbon steerer. I`ve tried 2 different carbon bungs, but the adjusting bolt that pre loads the bearing keeps coming loose after 10 miles, the bung part stays tight inside the steerer though!! At Wits End

I emailed Dolan 5 days ago, but as yet no replies. I`ve got an 1-1/8 carbon steerer on my other bike, and have done thousands of miles without any problem's!

The bungs are as rare as rocking horse poo, so to try and get hold of a 3rd will be difficult.

Any ideas will be gratefully appreciated.


4 user comments

Oldest firstNewest firstBest rated

try some locktight perhaps

posted by jason.timothy.jones [305 posts]
28th January 2014 - 14:43


Or carbon paste and a bit of sand papering

Canyon Roadlite Centaur/ Veloce groupset, Shamal wheels

Miles253's picture

posted by Miles253 [211 posts]
29th January 2014 - 8:04

1 Like

Tried carbon paste, have thought about roughing up the carbon cap area where the bolt enters through to give it something to grip too.

As for locktight, am afraid it might completely lock the whole thing up and I`ll be shagged!! Sad

Or maybe a star washer under the bolt!


wheelz's picture

posted by wheelz [86 posts]
29th January 2014 - 11:31


Blue loctite should be fine, you can get plenty purchase in the fixing, I use it in friction adjusters and chain ring bolts, neither of which you can grab easily with solid tools.

All Campag

posted by Flying Scot [897 posts]
29th January 2014 - 13:20