for the 6 speed it still needs a chain tensioner, but it is a different one, because the derailleur fork pushes the pulley back and forth
by flanges on it on either side of the toothed pulley .. and there is a lot of chain slack to take up when the rear is folded under.
Aftermarket has gotten their CNC machines making aluminum replacements that are pretty, but may bend , deform,
when the plastic one will bend and spring back.
Double chainrings and greasy finger shifting between them is possible..
I have a Swiss made Mountain drive crank on my M3L, the low range is running thru the 3 hub speeds another time
In 123 the crank arms turn more often than the chainring, then 456 is in direct drive on the crank.. they turn at the same rate.
Originally Posted by
rsanchezsaez
Do both cables go into the same internal hub?
Old 5 speed Mk2 era, had 2 cables going to opposite sides of the hub.
the current 6 speed has 2 cables to 2 different types of shifting 1 the right goes to the internal gear 1,2,3
the left lever to the 2 'speed' A or B cog external , thre internal you pause pedaling to shift it ,
the external you keep pedaling but let up on the pedal force to let the chain jump from one to the other..
...