The part about replacing the cables & housings, derailer, chain, shifter and cassette should precede the part about frame failure, otherwise it can give an impression of jumping to conclusions before exhausting the usual culprits, for those who don't read comments.
Some weeks ago I started to have the problem that when applying a lot of power to the pedals, the chain was slipping (not jumping to another gear but just slipping). This was particularly problematic when pedaling in up hill or when starting from still position.
This is an easy fix albeit I will caution you, what I refer to as 'chain jumping' is one of the more dangerous scenarios when riding a bicycle. Each time it jumps, from pushing hard on the pedal, the worse it becomes.
Once one becomes experienced in jumping and starts to reliably clear middle-sized jumps, simply doing them can become quite boring. A medium-sized jump gives a couple to 5 seconds of flight time, which feels like a lot to the rider. You simply hang in air doing nothing! Whipping is an easy, relatively safe and good-looking trick to learn at this point.
Bike chain jumping at lowest and highest gear, fine in the middle Ask Question Asked 2 years, 5 months ago Modified 2 years, 5 months ago
Bike chain jumping at lowest and highest gear, fine in the middle
Another cheaper and easier solution is to get a chain watcher. There are several types and brands such as N-stop, K-edge, Paul Components. This will sit on the inside and/or over the top of your chain on the front chainring which will help prevent the chain from jumping off the front ring. They are used widely in the cyclocross world to prevent ...