drift trike is awesesome!
However i have some custom stuff in mind, is there a way to get just the hub ?
Or is there some specific name i can google?
Maybe the chinese have already a copy, theoretically the part shouldnt be worth more than 100 (if it is mass produced).
As far as I know you can use the geared hub that Waaalrus used if you want a geared freewheel hub, a Nimbus trike hub if you are OK with 1:1, or some kind of custom hub or jack-shaft design if you want to go with something else. The more custom work the more expensive it will be, even if you are doing the work yourself (drive parts can get pricey).
I was working on a report on the affects of timber harvesting on the bulk density of forest soils when I got a flash of insight.
It would be relatively easy and inexpensive to gear up a drift trike hub with disk brake mount via jack shaft… And if you add a clutch mechanism to engage/disengage the jackshaft you could have two speeds with high-fixed and low-freewheel. (both could freewheel if you used a Trials freewheel or a BMX cog in the jackshaft)
The Red Menace is a great example of an early geared unicycle with a jackshaft. You could do something like that and replace the top inner cog with a trials freewheel for full time high gear coasting.
Or you could add a geared hub (with freewheel) above the tire like Justin did with his 3 speed build.
Using the nimbus trike hub and bolting on something like the Tomicog would be much cheaper and easier than fabricating your own hub.
I am not sure how you would incorporate a clutch without doing more research as to what clutches are available (my original idea), but if you want it to freewheel a geared hub above the tire could get you multiple speeds, all with freewheeling capability.