Pinion gearbox technology is based on spur gearing with two gearing sub-units connected on the output end. The combination of both gearing sub-units with their different gear pairs generates the individual gears.
They are evenly spaced apart in gearshift steps that make ergonomic sense for the particular application range, depending on the type of gearbox. Pinion does not have gear overlaps. Also, low efficiency values and chain wear are anathema to Pinion gearbox technology. Furthermore, we achieve ratio bandwidths of more than 630%, meaning you can select the perfect gear for any situation.
All gears can be shifted in succession or skipped in whatever order you require. It does not matter in this case whether the bicycle is moving or not. Standard hub transmissions usually have a relatively large number of components in mesh for transmitting force. With Pinion, however, force is only transmitted via two gear pairs. This technical peculiarity ensures a consistently direct and loss-free riding sensation in any gear.
Seals between the housing parts permanently prevent water, dirt and cleaning activities from affecting the transmission.
CHAIN OR BELT
Depending on the application, various sprocket sizes of steel and aluminium are available. Innovative belt drives are available.
The combined seal system with a simple labyrinth and the shaft seal guarantee 100% protection in the area of the drive shafts..
The diagram shows the internal structure of a P1.18 transmission. The complete transmission consists of 2 consecutive sub-transmissions with 6x3 gears. This is multiplied to yield 18 gears.
First, closely stepped sub-transmission with 6 gears. This sub-transmission is responsible for the close gear steps of the shifting.
The second sub-transmission multiplies the gears of the first sub-transmission without overlapping and provides the ratio bandwidth of the shifting.
Here the force is initiated into the gearbox. All drive gearwheels of the 1st sub-transmission are firmly connected to the input shaft.
The gears are shifted on the top shaft. One gear wheel in every sub-transmission transmits the force by a pawl connected to the shifting shaft..
It is a hollow shaft supported on the input shaft by needle bearings. It transmits the geared pedalling force to the sprocket or belt pulley.
Seventh gear is selected here. The gear pairs of the two sub-transmissions that transmit the force are marked. All other gears are coasting without load.
The force is transmitted by the shifting shaft to the second sub-transmission and is transmitted to a gear wheel of the output shaft.
Every gear on the shifting shaft has internal teeth that mesh with a pawl and allow the gear to be selected. The shifting shaft transmits the force from the selected gear of the first sub-transmission to the selected gear of the second sub-transmission.
In the collective transmission the rotary motion at the shift lever is transmitted directed to the camshaft in the transmission. This controls the pawls.
A rotation of the
camshaft actuates the
next pawl and a new d
gear is selected.
Oversize ball-bearings running in an oil bath guarantee a durable bottom bracket.