Using a chain tool slip each of its ends through the links of your chain and check your chain against its wear indicators.
Fixed gear bike chain slipping.
This will allow you to clearly access all the parts and spin the pedals to see how the drivetrain is performing.
Hub or fixed gear bike.
Straightening a bent derailleur hanger how.
It is important that you take the time to inspect the condition of your gears and chain before any ride.
I show the most common causes for chains that skip slip jump gears while pedaling auto shifting phantom shifting derailleur especially while under torqu.
To tighten a loose chain on a hub or fixed gear bike first use a wrench to loosen the axle nuts on the rear wheel.
Once your bike is upside down look at the derailleurs which are the small machines on the front and back gears that move the chain.
Bicycle gear slips will cause inconsistencies while riding as well as slow down a racer.
And explain what needs to be done to fix them.
To fix a slipped bike chain first turn your bike upside down as this will make it a lot easier to reattach the chain.
If the chain is worn out.
A chain that keeps falling off is either too loose in the case of a hub gear or fixed gear bike or the derailleurs are badly adjusted and move the chain right off the cogs when you change gears.
They will also lead to one using more energy to cycle especially if the damaged gears are the heavier ones.
Note which gear these are on so you can place the chain back in the right place.
Place your bike in a stand.
Press your shifter once.