Road Bike Derailleur Adjustment

The derailleur is usually attached to the bike frame the metal skeleton of the bike.

Road bike derailleur adjustment.

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. The majority of road and mountain bike derailleurs require a gap between 5 and 6 millimeters. 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. The majority of rear shifting problems can be solved with basic adjustments to the limit screws and index setting of th.

Thankfully adjusting a rear derailleur on a bike is a solution that is fairly simple and possible for most if not all home mechanics. This will clamp the bolt down on the cable so it can t move. Of the two screws on top of the derailleur the one nearest the frame usually controls the lower limit. 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.

Multiple gearing has been available for bicycles since the. This dictates how close to. Grip the top of the cable and pull up on it then loosen the bolt. How to fix the shifting on your bike.

If the bike is shifting well the b screw is probably within acceptable adjustment range. How to adjust a rear derailleur. Manufacturers recommend a 2mm spacing but this is only meant as a general guide and not a rule. To adjust a derailleur you ll need to pedal the bike while working.

Shift into the smallest front chainring and largest rear sprocket. Don t get too hung up on this particular adjustment. You can use a hex wrench to gauge this distance. 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.

Pull the cable up so that it is tight then re tighten the bolt again.