cargo up front:
http://blogs.sfweekly.com/thesnitch/CargoTrike.jpg
http://www.examiner.com/images/blog/wysiwyg/image/amsterdam_cargo_trike_mom(1).jpg

pros - can see the load, no need for differential, use existing drivetrain w/o modification
cons - looks a bit silly, unfamiliar handling, more load on articulated joint


cargo behind:
http://i01.i.aliimg.com/photo/v0/516041935/Electric_cargo_trike.jpg
http://www.oushun.com/UploadFiles/2010319195936678.jpg

pros - clear view ahead, load acts as crash cushion against road rage cars, feel like a trucker
cons - complicated drivetrain involving a differential, cannot see if passengers are misbehaving


Either way, it would be sweet to build a modular cargo/pedicab platform.  Maybe a 4x8 version to start - that's one sheet of plywood.  A buddy in austin wanted to build some pedicabs and mentioned that for left/right brakes it might be better to use hydraulics so you don't have cable lengths to deal with, just distributing pressure in brake lines.

Thoughts?
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