push’R for Rohloff: Trigger for Twister and Fluid for Wires

by 4

Hydraulics- how do they work?
Hydraulics- how do they work?

As much as Rohloff has earned fans for their durability and wide gearing range, fewer people are excited by the internally-geared hubs’ fourteen-speed twist shifters.  In response, we’ve seen a number of aftermarket solutions pop up- everything from mechanical paddles to shiny CNC-machined twister barrels.  Now the Swiss tinkerers at bpod.ch are entering the mix with a hydraulic trigger system.

Twist-free hydro 'hloffing
Twist-free hydro ‘hloffing

Given internally-geared hubs’ inherent ability to shrug off the worst of weather, hydraulic shifting does make sense.  Doubly so when the stock Rohloff shifter’s dual full-length cable runs (which can drag considerably when worn or contaminated) are taken into account.

Push and turn
Push and turn

Rather than creating their own shifters (and navigating a world of overlapping patents),  bpod have adapted Acros’ hydraulic trigger.  In Acros’ case, pushing on the top of the paddle will move one direction through the transmission, while pushing on the bottom (off-axis) will do the opposite.  Thanks to the looped nature of the system, a switch of the ports will reverse shifting action.

Hydraulic translator
Hydraulic translator

Given to the lightweight hydraulic lines (and Rohloff’s prioritisation of durability over weight), the push’R is expected to save 120g over stock.  For those with reduced right hand dexterity, Acros’ left trigger may also be used for what will likely be the only left-side full-range trigger shifter on the market.

A road shifter is also planned- but the flat bar version looks considerably further along.  The kit is not yet complete or priced, but interested parties can follow the project at pshr.ch or the bpod.ch Facebook page.

Comments (4)

    “For those with reduced right hand dexterity, Acros’ left trigger may also be used for what will likely be the only left-side full-range trigger shifter on the market.” other than shimano MTB Di2 which allows you to program 1 shifter (either right or left) to do front and rear shifts, as has been used in a recent world cup XCO round.

    Stato,

    Fair enough- and not something I’d considered. Di2 could be a great improvement for those with reduced dexterity.

    Saw this on instagram last week and got a little excited…then saw the suggested price….wait for it….$500! Think I’ll stick with me cables!

    Yeah.. I looked at it and thought CHA CHIIIIIING! Money to the Swiss is in a weird warp.

Leave a Reply