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Use of Shadow Plus and Type 2 Derailleurs
The rear derailleur Shadow Plus doesn’t just reduce irritating chain slap, but also facilitates trouble free removal of the back wheel.
Generally it’s easier to fit and remove the rear wheel if the chain is on the smallest sprocket of the cassette.
Shimano Shadow Plus Derailleur
1. In order to fit and remove the rear wheel quickly and easily you actuate a small lever which is located at the top end of the derailleur cage of all Shadow Plus rear derailleurs. If you turn the lever to the “off” position, the tension on the derailleur spring is reduced, thereby allowing the entire derailleur to be moved more easily.
It is now much easier to fit or remove the rear wheel. Picture 1
2. After you have refitted the rear wheel, you return the small lever to the “on” position. Picture 2 This increases the tension on the derailleur spring and thus reduces unwanted chain slap.
Sram Type 2 Derailleur
The new rear derailleur “Type 2” from SRAM doesn’t just reduce irritating chain slap, but also facilitates trouble free removal of the back wheel.
1. Push the derailleur cage forward to slacken off the chain tension. You now hold the derailleur cage in this position and actuate the cage lock button. Picture 3
2. The rear derailleur is now locked in this forward position and the chain tension is therefore greatly reduced. The rear wheel can now be fitted and removed much more easily. By pushing the derailleur cage forward slightly the cage lock is deactivated
and the derailleur cage moves back into its standard position. Picture 4