PART TWO: EXTENDED FIELD TEST, Cinq5 Shift:R trigger shifters for Rohloff external hubsTESTING METHODOLOGYSince the Shift:R is marketed as an alternative to the Rohloff rotary shifter, I decided it was best to test both shifters in repeated direct A-B comparisons to see if the Shift:R works as well, better, or worse than the Rohloff version in a variety of conditions and in real-world touring use. Accordingly, I left the original Rohloff shifter cable runs in place on my Thorn Nomad Mk2 and piggypacked the cable runs for the Shift:R on them using cable ties. This way, I could simply switch shift-boxes and so change shifters. The unused shift-box was always covered in a waterproof/dustproof plastic membrane to ensure sealing and prevent water and dust entry.
Once I had the Shift:R in place and ready to swap in and out as desired, I used it -- hard -- in all-weather daily urban riding as well as some specially chosen tours into the sorts of areas I prefer -- logging roads in Oregon's Cascade mountain range and into the high desert of Central Oregon where there is a lot of fine, sifting alkali talc that gets into everything. I was able to include extended use in freezing rain (-11°C) and also a genuine dust storm with no more than 20 meters' visibility, so the conditions simulated what I typically encounter on my outback tours.
It should be noted either trigger can be designated for up- or downshifting. Most of the car paddle-shifters I've used have the left lever for downshifts and the right for upshifts, so I kept this convention with the Shift:R triggers because it is familiar, especially after many hours on the driving simulator I enjoy for my computer rally games. It is very easy to identify which cable does what: When viewing the shift-box, the upper cable is for upshifts and the lower cable is for downshifts.
Finally, because of the trigger mounts, you can use full-size grips with MTB handlebars, or fully wrapped 'bars with drops.
HOW DID IT WORK IN TESTING?As a trigger shifter, the Cinq5 Shift:R worked well a majority of the time, with no mis-shifts and no apparent problems. For all ordinary conditions it did well, though I did find I had to re-lube the shift box more frequently than the Rohloff version when using the Cinq5-recommended 10wt oil. Failing to do so led to some functionally correct but rough feeling shifting that resolved by applying more lube. More on this in a moment.
As luck would have it, I incurred a puncture in the dust storm that required repair. The unused Rohloff shift-box was already capped and I left the Shift:R shift-box detached hanging free and clear of the ground while I was repairing the tube, as I usually do with the Rohloff at such times. Unfortunately, some of the very fine dust entered the Shift:R box
while it was off the hub mount and fouled the pawls/ratchets cassette so shifting was no longer smooth after I reattached it. The solution was easy enough -- I just waited till the storm passed, then undid the Shift:R and removed the cover and washed out the assembly using methanol from my Trangia camp stove, let it dry and relubed with oil and reassembled. All worked fine for the remainder of my tour. This was the only occurrence of problems of this sort, and happened while the unit was detached from the hub fitting. Again, this only happened while the Shift:R external shift-box was detached in a sandstorm, but I extended my test period and the problem did not recur during my testing.
Cinq5 recommend greasing the interface between the hub gear mount and the Shift:R external box and then maintaining the shift-box by relubing with 5-10 drops of low viscosity (SAE 10) oil every 5,000km/annually, the same interval as Rohloff recommend for Speedhub oil changes. I think for extended use in my kind of service (sometimes with extremely high desert temperatures), I would would prefer a lubricant that clung a bit more yet did not impede the free movement of the ratchets and pawls. Cinq5 specifically advise SAE 10 oil, so any deviation would be at the owner's risk. Cold tempertures could also thicken other lubricants, leading to unexpected operation in very cold weather, so the recommended SAE 10 is probably best for the majority of users as it was in most of my use.
I was initially concerned about the service life of the ratchets and pawls in the Shift:R's external shift-box, but I encountered no problems in my test period. Only time will tell compared to the Rohloff's geared external shift-box and available spares, but the use of high-strength stainless steel in the Cinq5 product is encouraging. I presume Cinq5 will have replacement internals or whole shift-boxes available for future maintenance and repairs. Care should be taken to use no tools other than fingers when changing/seating cables but things look fine otherwise.
I also found the triggers themselves were very slippery when wet, hot in hot temperatures and cold in cold weather, and wished they had either textured faces or -- better yet -- slip-on rubber covers for thumb traction, cushioning, and protection. Covers would also be nice for comfort, as I found my thumbs getting sore in use as only the thumbs are used and the Shift:R encourages more frequent shifting. Reducing cable friction reduced thumb pressure, so careful setup is rewarded.
For straight handlebars, I'd like to see an optional piggy-back mount where one lever could be mounted above the other so up- and downshifts could be accomplished with one hand leaving the other free for signaling, but this could lead to greater thumb fatigue than splitting the task between both hands.
I appreciated the more comfortable thumbscrew on the Shift:R external shift-box for easy removal and the stiff stainless cover that should prevent the slight distortion sometimes seen when Rohloff covers are reattached with too much coverplate fastener torque after a cable change.
I had thought I would miss a trigger stroke adjuster, but including one would have also limited the number of gears (maximum 2/stroke) the triggers could shift. Much the same effect can be accomplished by rotating the triggers around the handlebar, though this does also change the thumb's angle of approach to the trigger, making it seem more slippery when wet.
IS IT PERFECT? NO, BUT A VIABLE TRIGGER OPTION TO THE ROTARY SHIFTERIn my opinion based on my extended testing and touring use in deliberately chosen severe conditions, the Cinq5 Shift:R trigger-shifting system does indeed work as advertised to provide a viable alternative to Rohloff's rotary shifter. I never had a problem in ordinary conditions, but experienced transient problems when the shift-box was detached and exposed in the severe conditions of a duststorm. To make the next-generation better for continued use in all weather and certainly for expeditionary use, I'd like to see...
• Shielded cable entry points beyond the use of gasketed end caps, perhaps accomplished with a covered entry (less milling of the trigger mounting bracket) and/or boot seals.
• Rubber covers on the triggers for user comfort and to avoid slippage when wet. Texturing would help, but a rubber cover is really needed for comfort.
• Two-piece mounting brackets to avoid removing grips or handlebar tape when mounting.
• For drop-bar users:
a) Clamps sized for 25.4-26.0mm clamp areas as well as another sized at 23.8mm to mount outside the center ferrule or bulge on wider 44-46cm handlebars. "Endless" stainless mounting bands as used on the old SunTour Cyclone II front derailleurs and shift levers would allow attachment with the grips/tape in place, yet be low enough in profile to remain comfortable if the 'bars are gripped above the shifter mounts.
b) Clamps designed for 23.8mm road handlebar OD to mount just below the brake lever hoods so the triggers are carried to the side of the brake hood and shifted by the thumbs while riding on the brake hoods.
c) Even better would be to integrate the trigger shifters with a standard or v-brake compatible brake lever blade, much like the Gevenalle RetroShift for derailleurs:
http://www.gevenalle.com/• A specific recommendation for an alternate high-temperature lubrication in the Shift:R external shift box, as I found continued exposure to extreme high temps made the SAE 10 oil run a little thin and this required more frequent lubrication. Though it continued to function properly, the shifting action sometimes felt a bit "coarse" at the triggers until I renewed the lubrication at more frequent intervals than recommended. In normal temperatures, it was fine.
On the good side, I really loved the "backwards" cable anchoring and adjustment and it was disappointing to go back to the standard Rohloff system for these tasks after using the Shift:R. This system is so much more convenient for cable replacement and initial setup and lacks the tiny grub screws and problems with inserting the cut cable ends on the Rohloff version. The spring-loaded housing bedstops on the external shift-box are a great idea, and the design completely eliminates the possibility for getting the shifters out of sync with the shift-box albeit at the expense of a gear indicator. Having the adjusters and 3mm cable anchors at the trigger removes all the hassle from cable swaps and (if careful) even allows the same cables to be reused when setups are changed. This is a real help when touring, and I even performed a cable replacement in the field to try it out; much better than with Rohloff's rotary shifter and much less fuss
provided one releases all cable tension before opening the cover. I accomplished the task in about a quarter the time and without need for cable measurement.
CONCLUSIONSo long as Cinq5's recommendations for setup and cable housings are carefully followed, I think a good result can be expected for most riders using the Shift:R. I certainly liked the trigger-shift option and was pleasantly surprised at how I shifted more frequently because of it and more often found myself in the right gear as a result. It is intuitive and works well, and I would anticipate no problems in most touring environments.
However, the Shift:R could certainly be improved if friction were less of an issue, the triggers were padded with covers, and if the mounting brackets were changed to allow installation without removing grips. As a drop'handlebar user, I'm really hoping Cinq5 focus on developing mounts for other clamp diameters as well as for mounting alongside the brake hoods for "brifter-like" performance.
The one unknown is how long the Shift:R will continue to function well in actual use. It is a new product and has not yet accumulated the enormous service record of Rohloff's shifter, but the use of precision-machined, high-quality materials bodes well for the user who prefers trigger shifting.
The Shift:R is available for drop or straight handlebars from the Cinq5 online store for €299.00 incl. VAT plus delivery.
See:
http://shop.cinq5.de/epages/es984127.sf/en_GB/?ViewObjectPath=%2FShops%2Fes984127The Cinq5 Shift:R is available from St John's Cyclery for €336.77 as I'm writing this.
See:
http://www.sjscycles.co.uk/cinq5-shiftr-thumb-shifter-for-rohloff-hubs-prod32695/?currency=eur&geoc=usBest,
Dan.