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Bookmark or Share- Why does my gear slip when going uphill / standing?As an addendum to other answers, this was happening to me (not ghost shifting but the chain jumping forward). This started on a new chain, so I changed the cassette. It still happened. A test ride demonstrated that it only jumped in the middle chainring (by far the most used) even though it didn't look much more worn than the other rings.
- New Chain causing skipping on cassette - Bicycles Stack ExchangeI just installed a new chain on my 2002 Trek 2200 Road Bike. The old chain was a Shimano 9 speed that I installed 18 months and about 5000 miles ago.
- Jumping - What happens if you pull your back/front brake in the air?I've seen a 4WD get its front wheels in the air bu accident, did a hard brake, and then the front wheels hit the moving ground while the wheels were stopped.
- Rear derailleur shifting poorly, skipping gearsA tune-up fundamental SHOULD be the proper alignment of the rear derailleur hanger. If the shop doesn't use a Park Tool DAG-1 [derailleur hanger alignment gauge], or some other manufacturer's, to inspect, verify, and correct the relation of the hanger to 3 different points on rim of rear wheel at 180 and 45 degrees apart it is throwing parts at a bike.
- Shimano 105 brifters - rear shift jumps multiple gearsI've started to develop a problem in the rear derailer where when I shift to a higher gear/smaller cog, the shifter "jumps" multiple gears. Happens whether I'm on the middle or big chainring in front. And yes, I know it's jumping multiple gears because it takes multiple shifts to get back into the gear I started from.
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