A couple of days ago I fettled new brake pads onto the Avid Shorty Ultimate brakes on the Pompino.
The following day, on the homeward commute the rear brake suffered a sudden and catastrophic failure.
'Oh' I thought 'I can't have attached the cable securely to the yoke, and it's pulled through'.
As there were no descents on my journey, only minor ascents, I elected to continue whilst hoping that I'd secured the front cable more robustly.
At the end of the day, I was riding fixed - so the patella-popping brake was available as a last resort.
Imagine my surprise when, on reaching home without further incident and investigating, the cable hadn't pulled through the yoke at all, and was still secure.
Hmmmm....
Further investigation ensued with the bike placed in a workstand.
And herein is where the problem lay.
As I tightened the clamp around the top tube, the clamp dislodged the brake cable which runs along the apex of the tube.
Consequently any adjustments which were made at the brakes, were made against a false datum.
Once the clamp was released, all the fine-fettling went straight out the window
.
The only thing about this which surprises me is that the brake did sort of (My thought was 'this needs further attention') function on the way in to work - whereas, it really shouldn't have.
Tl;dr
I serviced both brakes.
Screwed up 50% of the service.
Had to service again.