The Rotor Uno rear derailleur certainly doesn’t look very much like anything else currently on the marketJames Huang / Immediate Media
The Rotor Uno levers may look a bit odd but they feel quite comfortable in your hands. Shifter operation and ergonomics are similar to SRAM DoubleTap with a single two-function lever per sideJames Huang / Immediate Media
Since all of the indexing is done at the derailleur end, the lever guts are actually quite simple and compact, comprising just two master cylinders per sideJames Huang / Immediate Media
Ignore the clear plastic housing as it’s just for display purposes. Rotor will surely use a more durable plastic for production units. Either way, the same lever will work with both the hydraulic disc and hydraulic rim brake options with a small leverage ratio changeJames Huang / Immediate Media
The carbon fiber bar clamp is a nice touchJames Huang / Immediate Media
Indexing is done at the derailleur ends, with the rear one said to use an internal mechanism somewhat similar to what you might find in a wristwatchJames Huang / Immediate Media
The upper pulley is situated concentric with the lower parallelogram pivotJames Huang / Immediate Media
While hydraulic fluid is used to push the pulley cage to larger cassette sprockets, the Rotor Uno rear derailleur still relies on good old spring tension to pull it back in the other directionJames Huang / Immediate Media
Rotor is using a conventional slant parallelogram geometry for the Uno rear derailleurJames Huang / Immediate Media
Chain gap is adjusted with a novel stepped adjuster. Rotor’s intention is to designate each position for a particular cassette size to help make initial setup easierJames Huang / Immediate Media
This small lever disconnects the indexing mechanism from the rest of the derailleur. In this way, wheel changes can be sped up and riders will be able to manually position the derailleur in the event of some sort of hydraulic failure (like a torn hydraulic line)James Huang / Immediate Media
Rotor intends for the Uno rear derailleur to be fully rebuildable and serviceable in the event of a crash or other damageJames Huang / Immediate Media
Display samples primarily were made of machined aluminiumJames Huang / Immediate Media
The front derailleur uses a similar indexing mechanism as the rear but with just three positions: two for the inner chainring and one for the outer oneJames Huang / Immediate Media
The bleed port on the front derailleur is located right next to the banjo, just to the left of the linkage mechanism. The system is supposably very easy to bleedJames Huang / Immediate Media
At least for now, Rotor is using a two-piece, CNC-machined aluminium cage for the front derailleurJames Huang / Immediate Media
Rotor developed the Uno group with help from Magura, who will supply both the rim and disc brake calipersJames Huang / Immediate Media
The Magura RT8 rim brake caliper will work with standard mounting holesJames Huang / Immediate Media
While the hydraulic disc brake calipers will self adjust for pad wear, the rim brake calipers will have to be manually adjustedJames Huang / Immediate Media