Originally Posted by Psimet2001

That's too bad. It is by far the most valuable tool any mechanic can have. Too many people don't realize that their hanger is most likely already tweaked. They assume there has to be a catastrophic event to cause it to "bend". In reality most frames aren't straight to begin with. Putting a new - "straight" hanger on them doesn't help. Brand new bikes with new hangers still are not in plane with the cassette. Especially with carbon.

As a mechanic that does it all the time 70% (backed by rigid scientific studies that are statistically validated....or not) of the time shifting issues are actually hanger related. the other 28% it's cables, housing or chain. 2% is the shifter or derail.

It's literally the first tool I grab when any bike hits the stand. Especially at race venues. The reaction is always "how the hell did it bend?" "Well - did you put it on your car to get it here?"