Originally Posted by
thehammerdog
Looks like stem-mounted cable hanger which was just as I suspected.
A fork-crown mounted cable hanger is the solution.
In your case, you appear to have the Tektro "brake booster" plate there, and it has a hole at the top center which can be used to mount the cable hanger.
Example of some fork-crown hangers here:
Bicycle Brake Cable Hardware from Harris Cyclery
Now for the explanation of why the stem-mounted hanger causes shudder is here:
https://www.velonews.com/2010/09/cyc...o-cross_101807
But it is missing a photo, so I will attach it here:
