Figure 1:
Adjustable rear dropout
Some frames have rear dropouts that can be adjusted to change the chain tension when used with a single rear cog and no derailleur. The following dropout types are listed by the name of the model but some model names might not be listed. If you cannot find the information for the dropouts on your bicycle, consult your dealer. For bicycles with belt drive, see the Belt Drive section.
Some dropouts accommodate the use of a fixed gear drivetrain, where moving the pedals backward will turn the rear wheel backward, and there is no coasting. This is the system used for Track bicycles, designed to be raced on a velodrome or bicycle track. If you change your bicycle to a fixed-gear drivetrain, make sure you read about Track bikes and how to ride them.
Read the Warning About Mechanical Work before performing any service work on your bicycle.
To adjust the chain tension, loosen the two attachment bolts on each dropout. Use the micro-adjust screw to move the dropout. Check the chain tension. Make sure the wheel is centered in the frame, then tighten the attachment bolts to the torque specifications.
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Figure 2: Adjustable rear dropout |
To adjust the chain or belt tension, loosen the two attachment bolts on each dropout. Use the micro-adjust screw to move the dropout. Check the chain or belt tension. Make sure the wheel is centered in the frame, then tighten the attachment bolts to the torque specifications.
This dropout can be split to install or replace a belt-drive belt.
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Figure 1: Adjustable rear dropout |
This dropout can be changed from a track-type horizontal dropout to a vertical dropout with a deraillleur hanger. To change the dropout, switch the two removable parts from one side of the bicycle to the other.
First, remove the rear wheel. Then loosen the screws on both the right and left dropouts, and take off the removable pieces. Put the piece that was on the left dropout onto the right side, and also switch the other side. Tighten the attachment bolts to the torque specifications.
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Figure 1: Adjustable rear dropout |
