Monday, April 27, 2015

Rohloff Twist Shifter Install

The video below shows exactly how to install a twist shifter onto a Rohloff external mesh shifter box.  Though the video demonstrates a Co-Motion drop bar shifter, the process is exactly the same for the stock Rohloff supplied shifter.



The video, easily the best how-to video I used during the build, shows and explains every step of the process, except how to cut the cable housing to the right length.  In the video they state they cut the housing, but don't show how to measure the length.

So, here's what I did ... At the hub end of things, the external mesh attaches to the hub and there are two barrel adjusters that get inserted into that external mesh box.  If you take the cover off the box, slide the box onto the hub and insert the adjusters, you can see where the housings need to end.  The housings need to be inserted all the way into the adjuster, so measure and cut them at that point.

The other thing the video does not emphasize is the need to use a sharp cable cutting tool purposed for bike cables, not electrical pliers, tin snips, or side cutters, as those tools will crush the cable as it cuts and fray the end.  The holes in the mesh box's cam are only a few tenths of  a mm larger than the cable and won't cooperate with frayed cables.  I learned the hard way.  Anybody want to buy a nearly new side cutter?  Its great for cutting bike cables snipping zip ties.


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