Road Bike Derailleur Adjustment

How to adjust a rear derailleur.

Road bike derailleur adjustment.

With the chain on the biggest cog at the rear adjust the inner adjusting screw so that when the chain is on the smallest chainring it sits in the middle of the derailleur side plates. This will clamp the bolt down on the cable so it can t move. Shift into the smallest front chainring and largest rear sprocket. Thankfully adjusting a rear derailleur on a bike is a solution that is fairly simple and possible for most if not all home mechanics.

If the bike is shifting well the b screw is probably within acceptable adjustment range. The majority of rear shifting problems can be solved with basic adjustments to the limit screws and index setting of th. The lower the cage is the better it will shift. All 11 speed shimano road components are inter compatible you could for example use a dura ace 9100 derailleur with a pair of 105 7000 shifters.

You can use a hex wrench to gauge this distance. The derailleur is usually attached to the bike frame the metal skeleton of the bike. The majority of road and mountain bike derailleurs require a gap between 5 and 6 millimeters. Don t get too hung up on this particular adjustment.

This dictates how close to. How to fix the shifting on your bike. On the rear axle the lowest gear 1 st is the largest sprocket and the highest gear 5 th 6 th 7 th depending on how many sprockets are on the cassette is the smallest sprocket. Shimano road bike derailleur compatibility.

Of the two screws on top of the derailleur the one nearest the frame usually controls the lower limit. To adjust a derailleur you ll need to pedal the bike while working. 2 shift the bike to the highest possible gear. Grip the top of the cable and pull up on it then loosen the bolt.

For correct height adjustment position the bottom of the derailleur cage as close to the largest sprocket teeth as possible so that it still clears.