A. What is a Schlumpf gearing system?
- A.1.1. Structure of Schlumpf - gearing systems
- A.1.2. How to shift?
- A.2. mountain-drive: what's particular?
- A.3. speed-drive: what's particular?
- A.4. high-speed-drive: what's particular?
- A.5.1. Maximum torques
- A.5.2. Schlumpf - drives for mountain bikes
- A.5.3. Schlumpf - drives for handbikes
B. What Schlumpf drives are good for?
- B.1. Extension of gearing range
- B.2. Lowest possible gears -> mountain-drive
- B.3. Highest possible gears -> high-speed-drive
- B.4. Amplification of low and high gear range without extrem speeds -> speed-drive
C. Combinations with different gearing systems
- C.1. General reflections about increase of torque at the rear gear component due to a gearing system at the bottom bracket
- C.2.1. Combination mountain-drive and derailleur
- C.2.2. Combination mountain-drive and internal hub
- C.3.1. Combination speed-drive and derailleur
- C.3.2 Combination speed-drive and internal hub
- C.4.1. Combination high-speed-drive and derailleur
- C.4.2. Combination high-speed-drive and internal hub
- C.5. Combination with coaster brake
D. Different types
- D.1.1. mountain-drive standard version
- D.1.2. mountain-drive cargo version
- D.1.3. mountain-drive - Reha - version
- D.1.4. mountain-drive with 27-tooth chainring
- D.1.5. mountain-drive and multiple chainrings
- D.2. speed-drive
- D.2.1. speed-drive - type "BCD110" for screwed-on chainrings with 34 - 53 t. and BCD110 mm
- D.2.2. speed-drive - type "08" for small chainrings, starting with 27 t.
- D.2.4. speed-drive - Reha - version
- D.2.6. speed-drive and multiple chainrings
- D.3. high-speed-drive
- D.3.1. high-speed-drive standard version with 27 t. chainringD.3.1. high-speed-drive Standardausführung mit 27-zähnigem Kettenblatt
- D.3.2. high-speed-drive flange for 30- and 34t.-chainring or adapter for BCD130 chainrings
- D.3.3. high-speed-drive and multiple chainrings
E. Installation
- E.1.1. mountain-drive - installation with torque lever (anti-twisting bracket)
- E.1.2. mountain-drive - installation with cone rings
- E.1.3. mountain-drive - installation into very narrow and very wide bottom bracket shells
- E.1.4. mountain-drive - installation into eccentric bottom brackets (EBB)
- E.1.5. mountain-drive - left side installation
- E.1.6.1. Brompton - torque lever
- E.2.1. speed-drive - installation with cone rings
- E.2.2. speed-drive - installation into very narrow and wide botttom bracket shells
- E.2.3. speed-drive - installation into EBB (eccentric bottom brackets)
- E.2.4. speed-drive - left side installation
- E.2.5.1. speed-drive for Brompton folding bike
- E.2.5.2. speed-drive in combination with Rohloff hub
- E.3.1. high-speed-drive - installation with cone rings
- E.3.2. high-speed-drive - installation into very narrow and very wide bottom bracket shells
- E.3.3. high-speed-drive - installation into eccentric bottom bracket shells
- E.3.4. high-speed-drive - left side installation
- E.3.5.1. high-speed-drive for Brompton folding bike
F. Questions with regard to different applications
- F.1.1. What should I know before ordering a Schlumpf gearing system?
- F.1.2. What should I measure?
- F.1.3. What should I check before installing a mountain-drive into a mountain bike?
- F.1.4. Schlumpf drive for a Brompton
- F.1.5. Can I mount a Schlumpf drive into a tandem? At the front or rear position?
- F.1.6. Are Schlumpf drives strong enough to be used on heavy transportation bikes or rikshaws?
- F.1.7. My application requires freewheeling in one or both gears. Is this possible?
- F.1.8. My application requires no contact between crankarm and axle in one position. Is this possible?
- F.1.9. My bottom bracket shell has a width of 73 mm (American standard). Which drive fits?
G. Accessories
- G.1.1. Bolt circle diameter (BCD) 110mm
- G.1.2. Bolt circle diameter (BCD) 130mm
- G.1.4. Chainrings for speed-drive model "08"
- G.1.5. Chainrings for high-speed-drive
- G.1.6.1. mountain-drive 27 t.
- G.2.1. Trouser guards for standard bolt circle diameters BCD110 and BCD130
- G.2.2. Trouser guards for speed-drive type "08"
- G.2.3. Trouser guards for high-speed-drive
- G.2.4. Double sided trouser guards
- G.3.1. Material and shape of cone rings
- G.3.2. Width of cone rings
- G.3.3. Grooved nuts for wider cone rings and/or wider bottom bracket shells
- G.3.4. What is a 45° grooved nut?
- G.3.5. What is a 90° grooved nut?
- G.4.1. Available lengths, shapes and finishs
- G.6.1.1. Milling cutter / rental service
- G.6.1.3. Torque screw driver for tightening gear shift buttons
H. Service and maintenance
- H.1. Recommended service intervals
- H.2.1. Lubrication of mountain-drive
- H.2.3. Lubrication of speed-drive "08"
- H.2.4. Lubrication of high-speed-drive
- H.3.1. Temperatures not under -5°C
- H.3.3. Oil instead of grease
- H.4. Adjusting the gearing play
- H.5. How to dismantle a Schlumpf drive
- H.6. Which torques for which screws?
I. Problems and solutions
- I.1. Gear shift button got lost
- I.2. Getriebe schaltet "automatisch"
- I.3.1. Screwed-on chainrings
- I.3.2. Chainrings for speed-drive "08"
- I.3.3. Standard chainring high-speed-drive 27 teeth
- I.3.4. Special chainrings for high-speed-drive with 30 and 34 t.
- I.4. Side play of the chainring
- I.5. Side play of the axle
- I.6. Side play of the crankarms
- I.7. Sound is coming out of the gearbox
- I.8. Drive doesn't shift into both gears
- I.9. Drive disengages from time to time
- I.10. Drive runs with higher resistance after lubrication
- I.11. Drive runs with higher resistance after tightening the self locking nut
- I.12.Drive runs with high resistance at low temperatures
- I.13. Dismount a crankarm
- I.14. Dismount a Schlumpf drive
- I.15. Change the left industrial bearing
- I.16. Overview of cone rings
- I.16.1. Material
- I.16.2. Width
- I.16.3. Surface of aluminum cone rings
- I.16.4. Surface of steel cone rings
- I.16.5. Cone rings on both left and right side
- I.16.6. Final check
- I.17. Grooved nut has been well tightened but drive still slips in geared mode
- I.18. Drive slips in geared mode (low gear of m-d, high gear of s-d and h-s-d)
- I.19. Drive skips every second or third crank revolution