Version DualDrive24

This version provides 24 speeds, it combines a 3-speed gearhub and 8-speed rear derailleur.

The the 3-speed-hub is used to set the speed range, 1 for mountain, 2 for city and 3 for fast riding.

The gears are shifted by a combined one-hand-grip to shift both 3-speed and 8-speed.

Rear wheel hub Sram DualDrive24,
derailleur SRAM 7.0 (Aluminium),
SRAM combined grip with long turning grip,
8 speed cassette SRAM 11-32,
crankset 42 or 46 teeth, with chainwheel protection ring.
Version Rohloff 14-Speed
This version provides 24 speeds, shifted by one turning grip. It may be shifted under load.

The Rohloff hub features a low weight and a very good efficiency, comparable to a chain drive.

Rear wheel gearhub Rohloff Speedhub 14,
turning grip,
crankset 42 or 46 teeth with chainwheel protection ring.
Version 7-Speed
This version provides 7 speeds in a gearhub.

The gearhub is comfortable and does not require much maintenance. Gears are shifted by a turning grip.

Rear wheel gearhub SRAM S7 with free-wheel,
turning grip,
crankset 42 or 46 teeth, with chainwheel protection ring.
Version 7-Speed with reverse gear

Die Sram S7-Hub fitted with a reverse gear.

While moving forward, the hub actuates as a standard coaster break. After stopping the trike backs up while pedaling backward.

For this version adjusting the size requires adjusting the chain lenght.
Developments
hub version
 Crankset 42 T. Crankset 46 T. Pedelec (38 T.)
DualDrive24 1,48 - 7,85 m 1,62 - 8,60 m 1,34 - 7,10 m
Rohloff 14-speed / Sprocket 13 T.
Sprocket 17 T.		 1,35 - 7,16 m
1,03 - 5,48 m		 1,47 - 7,85 m
1,13 - 6,00 m		 1,22 - 6,48 m
0,93 - 4,96 m
7-speed / Sprocket 18 T.
Sprocket 24 T.		 2,01 - 6,15 m
1,51 - 4,61 m		 2,21 - 6,73 m
1,65 - 5,05 m		 1,82 - 5,56 m
1,37 - 4,17 m

Specifications subject to change