Whether daily commuting to the office, weekend tours or transalp  by mountain bike: with 600% overall ratio, the C1.12 gearbox beats modern derailleurs by far. 12 gears are 17.7% even and finely graded, thus offering the right gear for every situation and, thanks to the low centre of gravity, the typical Pinion riding dynamics.

PERFECTLY TUNED FOR THE FOLLOWING USAGES


TREKKING

Intuitive shifting. Careless technology. Compacte design.

TRAVEL

Pinion touring bikes are among the best of thier kind.

   MTB

Discover the gearbox revolution in mountain biking.

advantages for TREKKING BIKES

advantages for TRAVEL BIKES

advantages for MOUNTAIN BIKES

THE C1.12-GEARBOX IN COMPARISON

"THE GEARBOX DELIVERS RIDING PLEASURE FROM THE FIRST SECOND ON AND ALWAYS OFFERS THE PERFECT GEAR RATIO. I AM TOTALLY CONVINCED!"

TOM BIERL, CHIEF EDITOR TREKKINGBIKE (05/2013)

BIKES WITH C1.12 GEARBOX

Stevens C12 Lite

ROSE Activa Pro Pinion

Zerode Taniwha

BÖttcher Adminton Pinion

MTB Cycletech Code Pedelec

Kalkhoff Endeavour P12

Tour de Suisse Speedster Road 2.0

Tout Terrain Outback

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ALL PINION FRAME- & BIKE MANUFACTURERS

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C1.12 Ratio Calculator

The Pinion gearbox calculator helps you to choose the ideal gearbox tuning. The internal gear ratio for each gear of all types of gearboxes is already defined in our calculator. The entire spectrum of a Pinion transmission can be shifted to fast or slow with the secondary ratio to the rear wheel. A 1:1 tuning is also possible by using sprockets of the same size or toothed belt pulleys.

Calculator is Available in only Desktop Mode

(Number of teeth chainring gearbox)
(Number of teeth sprocket rear wheel hub)
(Wheel circumference in mm)
(in mm)

Additional ground clearance compared to a derailleur gear system with a chainring with 44 teeth

The size ratio, or the ratio of the number of teeth between chainring and rear sprocket is called ratio. Together with the circumference of the wheel the unfolding can be calculated. The unfolding is the distance in meters or centimeters travelled by a bicycle with one crank rotation.

 
 

C1.12 TECHNICAL DATA

GEARBOX
transmission type Spur gearing
Number of gears 12
Overall ratio 600 %
Gear steps 17,7% constant
Recommended ratio of
Rear Sprockets (21t/24t for example) to front
0,875
Gain ratio in 1st gear (21t/24t)/td> 1,82
Gain ratio in 12th gear (21t/24t) 0,3

REAL GEARS
Real gears refer to the gear steps of a bicycle transmission that can be optimally used. In derailleur gears, the skewed running of the chain leads to significant losses of efficiency. In addition, when there are two or three front sprockets there will be redundant, i.e. equivalent, gears. A 3×10 derailleur transmission, for example, actually only offers 14 or 15 real gears from this perspective. 

TECHNICAL DETAILS
Chain line with Pinion chain ring 54 mm
Maximum input torque 250 Nm
Axle standard Pinion splined shaft
Q-faktor 1 174 mm
Lubrication Splash lubrication
Oil type Pinion gearbox oil 2
Oil capacity 60 ml (2.0 oz)
Temperature range 5 °F to 104 °F
  • Distance between the outer faces of the crank arms at the level of the pedal attachment points
  • synthetic, viscosity 68
  • including lock ring, crank central screws and shift cover with fastening screws
  • including crank clamp screws
  • including fastening screws

MAINTENANCE
Oil change interval every 6.200 miles /
Once a year

WEIGHTS
Gearbox 3 2350,0 g
Rotary shifter 95,0 g
Crank arms „CNC“ 175 mm 4 434,5 g
Crank arms „Forged“ 175 mm 4 481,5 g
Chain tensioner (Federstärke: 2,5 mm) 5 122,0 g
Chain ring 30t 51,0 g
Chain ring 24t 37,5 g
Gearbox Spider 104 mm 40,0 g
Rear sprocket 26t 37,5 g
Rear sprocket 21t 29,0 g