Derailleur
EXPLODED VIEWS
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Supre Derailleur
1. Base
1.1 Mounting bolts
2. Upper link
2.1 Pinch bolt
3. Lower link
4. Knuckle
4.1 High limit screw
4.2 Low limit screw
5. Pusher plate
6. Derailleur Pulley
6.1 Pulley spacers
6.2 Bearing
6.3 Pulley bolt
7. Inner guide plate
INSTALLATION
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Fastening the derailleur
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- The Supre Derailleur is only compatible with Supre-Drive-specific frames.
- Tighten the derailleur mounting bolts. Torque the bolts to 3.5 Nm.
- A light threadlocker should be used on these bolts.
- Install the two bolts loosely then gradually tighten both bolts by alternating a few times between them until the derailleur is fastened.
Installing the shift housing and routing the cable
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- The Supre Derailleur is designed to be compatible with 12-speed Shimano MTB shifters.
- Route the shift housing from the shifter to the derailleur.
- Determine the correct length of housing. Cut the housing with cable cutters, and install the housing end caps.
- Ensure that the housing isn't too short. Aim for gradual, large-radius bends. Sharp bends or kinks will negatively impact shifting performance.
- It may be necessary to check that the housing length is appropriate throughout the range of rear suspension travel.
- With the shifter in the highest gear, thread a shift cable into the shifter and through the shift housing.
- Thread the cable through the small hole in derailleur base at the bottom of the housing end stop.
- Insert the tip of the shift housing (with the end cap) into the housing end stop. Push it firmly into place.
Fastening the shift cable
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- Before fastening the cable, a good starting position for the barrel is three full turns out from the fully in position.
- Thread the cable along the cable groove on the upper link (adjacent to the cable clamping screw on the aluminum upper link). Partially unscrew the cable clamping bolt and wrap the cable 180 degrees around the bolt starting from the outside wrapping inward.
- The shift cable must be fully within the cable groove on the upper link of the derailleur.
- With needle nose pliers, hold the cable in the 180 degree wrapped position while tightening the cable clamping bolt. Don't pull the cable too tight while fastening the cable clamping bolt - pull enough to take up the slack in the system but not so much that the derailleur moves.
- The shift cable should be between the washer and the upper link.
- The cable clamping bolt is more accessible with the rear wheel removed.
- Cut the excess cable 2–3 cm from the bolt, and install a ferrule. Bend the cable so that it's parallel to the bike's center plane - this will ensure that the cable doesn't jam between the dropout of the frame and the upper link of the derailleur.
SETUP/ADJUSTMENT
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Adjusting the high limit
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- Ensure that the shifter is in the highest gear and that there is little to no tension in the shift cable so that the derailleur is resting on the high limit screw. Adjust the high limit screw so that the derailleur pulley is in plane with the highest gear on the cassette.
- Try looking down past the cassette and lining up the derailleur pulley.
- Turning the high limit screw in will move the derailleur pulley inward towards the lower gears. Turning the high limit screw out will move the derailleur pulley outward toward the higher gears.
- Lower gears means those that are easy or light, with the largest sprockets. Higher gears means those that are hard or heavy, with smaller sprockets.
Adjusting the cable tension
- Once the chain is installed, shift all the way to the lowest gear and back to a position near the middle of the cassette to ensure the cable and housing is properly seated.
- Use the barrel adjuster on the shifter to line up the derailleur pulley with the corresponding cassette sprocket. Turning the barrel adjuster in will move the derailleur pulley outward toward the higher gears. Turning the barrel adjuster out will move the derailleur pulley inward towards the lower gears.
- If the correct cable tension isn't within the range of the barrel adjuster, the shift cable may need to be re-fastened with a different initial barrel position or cable tension.
- Shift through the entire range of the cassette while turning the cranks. The shifting should be clean and fast on all gears with no noise or visible rubbing between the chain and adjacent sprockets.
- As the shift housing compresses and cable stretches, there may be a need to adjust the barrel adjuster out on the trail from time to time.
Adjusting the low limit
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- This limit screw is important to prevent the chain from derailing into the spokes.
- After adjusting the cable tension, shift into the lowest gear.
- Loosen the low limit screw until there is a gap between it and the limit stop on the aluminum lower link. Now tighten the low limit screw until it contacts the limit stop on the lower link.
- If the low limit screw isn't set correctly, the derailleur can struggle to shift into or out of the lowest gear.
- Turning the low limit screw in will move the derailleur pulley outwards towards the higher gears. Turning the low limit screw out will move the derailleur pulley inwards toward the lower gears.
- Shift into the lowest gear with a relatively high force on the shifter paddle and make sure the chain doesn't derail into the spokes.
MAINTENANCE
Replacing the derailleur pulley
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- With the rear wheel removed, undo the derailleur pulley bolt.
- Slide out the derailleur pulley, pulley spacers, and bearing.
- Replace the pulley or bearing as needed.
- The inner and outer pulley spacers are identical and can be installed on either side of the pulley. Also, the pulleys of the Supre Drive are symetric and can be installed in both orientations.
- With the chain correctly routed, re-install the pulley assembly.
- A light threadlocker should be used when re-installing the derailleur pulley bolt.
- Ensure the narrow/wide links in the chain match the narrow/wide teeth on the derailleur pulley since the derailleur guide plate does not allow enough space for the chain to re-orientate itself on the pulley once the pulley is installed.