Unkillable Monster

A Prototype Cargo Trike

: A Prototype Cargo Trike I started working with a group that wanted to move some boxes of veggies around town with pedal power. We selected one with a single piece crank for the prototype. This is a key point in the design of the cargo trike. The two 24″ front wheels are mounted in forks taken from two donor bikes. Photo 1 shows the shape we started with. A stiffer design is needed. The power wheel and seat worked fine. The cart was easy to ride. You do need to lean.I started working with a group that wanted to move some boxes of veggies around town with pedal power. We searched all over the Web for ideas about what to build and ended up with the general plan you see here.If you decide to build another one using the existing power frame portion of the rear I’ve got two suggestions. 1) weld in a down tube going from where seat post slides in going down to horizontal tubes which go under box section. This will cut down on flexing by triangulation and make the horizontal tube shorter. 2) Use a lazy susan ball bearing plate for your pivot and weld horizontal tubes to outside edges of susan plate. They will need to come together about a foot before being welded to the crankshaft area so the pedals have clearance. The horizontal tubes are the ones most subject to flexing so using bigger tubing will cut down on the flex if you can terminate it on both ends without compromising the structural integrity by boxing in any open ends and cross bracing. Otherwise, very good 1st try!l8nite4 years agoReplyI totally understand the desire to build yourself on the cheap but theres a reason why companies like Worksman Cycles uses large heavy duty tubing for industrial type bikes/trikes. Keep plugging away, I’m sure you’ll get one that works well.Im not affiliated with Workmans other than being a very satisfied customer of their PAV trike, if you haven’t checked them out before they have a wide variaty of bikes/trikes with lots of specifications listed.Articles Connexes：