![Old Peugeot bike, love it to bits but recently when I pedal hard on a hard gear, the chain/hub 'jumps' forward, like the gear is slipping... What needs fixing? Not sure how Old Peugeot bike, love it to bits but recently when I pedal hard on a hard gear, the chain/hub 'jumps' forward, like the gear is slipping... What needs fixing? Not sure how](https://i.redd.it/eyjdsx7ksn571.jpg)
Old Peugeot bike, love it to bits but recently when I pedal hard on a hard gear, the chain/hub 'jumps' forward, like the gear is slipping... What needs fixing? Not sure how
![mountain bike - Chain slipping on smallest cogs (bigger chainring, new chain) - Bicycles Stack Exchange mountain bike - Chain slipping on smallest cogs (bigger chainring, new chain) - Bicycles Stack Exchange](https://i.stack.imgur.com/ZQO5l.jpg)
mountain bike - Chain slipping on smallest cogs (bigger chainring, new chain) - Bicycles Stack Exchange
![How To Fix A Skipping Bike Chain - Why Is My Bicycle Chain Skipping & What Causes It - Sixthreezero Bike Co. How To Fix A Skipping Bike Chain - Why Is My Bicycle Chain Skipping & What Causes It - Sixthreezero Bike Co.](https://images.ctfassets.net/ogr4ifihl2yh/69umIyShlhJu3ARpPQr83p/a52b02edaed4e79a7cd9144d7fb4b6b3/How_to_fix_a_skipping_bike_chain_v2-02.jpg?w=1000&q=85)
How To Fix A Skipping Bike Chain - Why Is My Bicycle Chain Skipping & What Causes It - Sixthreezero Bike Co.
![mountain bike - Chain slipping on smallest cogs (bigger chainring, new chain) - Bicycles Stack Exchange mountain bike - Chain slipping on smallest cogs (bigger chainring, new chain) - Bicycles Stack Exchange](https://i.stack.imgur.com/ofdTV.jpg)