View Single Post
  #16  
Old August 13th 19, 03:35 PM posted to rec.bicycles.tech
Joerg[_2_]
external usenet poster
 
Posts: 6,016
Default Bad rear derailleur???

On 2019-08-13 07:18, jbeattie wrote:
On Monday, August 12, 2019 at 7:56:53 PM UTC-7,
wrote:
On Monday, August 12, 2019 at 9:15:27 AM UTC-5, AMuzi wrote:

Get your eye behind the rear changer and see if the cage is
parallel to the chainrings.

-- Andrew Muzi www.yellowjersey.org/ Open every day since 1
April, 1971


Gosh darn Andy, I'm beginning to suspect maybe you know what you
are talking about. I put my Park rear derailleur hanger tool on
the rear hanger. And G-d D-mn it was so crooked. I got it back to
being perfectly aligned. Its a steel hanger that is welded right
onto the steel frame. So easy to bend it right. With the hanger
being so bent, I can't figure out how rear shifting was perfectly
fine for the first 30 miles of the ride. All shifts perfect. I'd
think a crooked rear hanger would not shift right.


That's why a crooked derailleur hanger doesn't make sense -- it
doesn't just occur unless you dropped the bike or hit something. An
outside possibility is that you got something into the derailleur
that dragged it into the wheel and bent the hanger, but when that
happens, the derailleur is usually ruined and wound around your
cassettes or in the spokes. My first thought was that your cable was
in the process of failing.


It takes only one rock it, from a rock kicked up by the front tire at
speed. That is why a separate (sacrificial) derailer hanger is a good
thing. They can only be bent back so many times.

--
Regards, Joerg

http://www.analogconsultants.com/
Ads
 

Home - Home - Home - Home - Home