is it possible to combine an indexed shifter with old friction derailleurs?
As the cable is moved by the shifter, I understand that derailleurs should work by default and by moved with mm that the cable is pull.
Is the problem related to how much cable pull the derailleur requires for each shift of sprocket? Is there restrictions/constraints for mixing index and friction?
is better a shift with more speeds than rings in the freewheel, to ensure reaching every ring?
example of potential combinations:
- shifter, freewheel, derailleur SS (short cage)
- Microshift (index, 7s)+ 7rings+ Suntour cyclone(friction)
- Microshift (index, 7s)+ 7rings+,Shimano 500EX (index STI,7s)
- Microshift (index, 7s)+ 7rings+,Sunrace R30(index,7s)
- SRAM MRX comp twister(index, 8s)+ 7 rings+ Suntour cyclone(friction)
- SRAM MRX comp twister(index, 8s)+ 7 rings+ Shimano XTR(index,9s)