Review and assembly guide detailed here by Eugene of FusionSource:
Titan: A Next-Generation Extruder for your 3D Printer
Titan brings high-performance, lightweight extrusion to everyone! All the benefits of geared extrusion in a lightweight, punchy little package.
With 3:1 gear reduction, precision milled hobbed gearing, we’ve developed Titan to push with awesome power, while also being incredibly light and compact.
The gear ratio means you’re able to use lighter motors as you’ll need less torque for the same filament pushing force - so direct drive systems have a lighter moving carriage, and bowden-style printers become powerful, reliable little beasts when combined with your V6 HotEnd.
Titan works for all configurations of bowden, direct extrusion, 1.75mm and 3mm (3mm direct drive only). To use Titan as a bowden extruder you just insert a bowden adaptor into the body instead of a HotEnd.
Extruders with high gear ratios often struggle with snappy retracts and keeping up with Volcano for big, fast printing. Titan's balanced gearing ratio of 3:1 means that you can cope with fast extrusion situations like Volcano, and the lightweight gear-set gives snappy retractions.
Direct-drive extruders can have issues with ‘pulsing’ of flow, because the lower resolution of filament motion results in filament being extruded in pulses. This results in a slight wavy surface finish, and is particularly prevalent when printing at low layer heights. Using 3:1 gearing triples the resolution of the system and allows for smooth printing at the lowest of layer heights, using the smallest of nozzles.