Maybe but the lack of a spider with five separate points of attachment
to the chainring looks kinda sketchy to me. Maybe those cranks would propel
a kid down the street. I suspect if you had to torque on them to skid, skip or
blow your nose they would snap right quick. Just sayin.
edit: I'm not saying there aren't other good designs out there but
the thin chainring looks sketch.
try this:
http://www.thebikebiz.com/product_p/trk-cr-paul01.htm