Bike Forums - View Single Post - Chain keeps shifting on hills

01-31-14 | 09:55 AM

#17

Bill Kapaun

Really Old Senior Member

Joined: Feb 2007

Posts: 14,679

Likes: 1,916

From: Mid Willamette Valley, Orygun

Bikes: 87 RockHopper,2008 Specialized Globe. Both upgraded to 9 speeds. 2019 Giant Explore E+3

There's also the possibility of frame flex if you are mashing up hills.
Try spinning 1 lower gear and see if you still have the problem.

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