A little help from mechanical minded folks

[Tallbump]

I'm trying to make a "float" for a small local parade for my church's Vacation Bible School.
We've done it for several years
Typically I just made a 2d design out of plywood and mirror it and put one on each side of a garden wagon, like a gorilla wagon
This year I want to kick it up a notch
I want to add some motion to the cut outs
Our theme this year is rodeo
I want the cut out to be a bull or horse and I want it to be "bucking" as we pull it. Basically just rocking back and forth
Nothing crazy or overly complicated
I feel there has to be a way to use the rolling of the wheels and create some type of crank mechanism
But I'm just not quite sure how
Any suggestions?
I would probably also be able to do a very simple motorized something as well

 

[WRM]

I'd see if I could fit a "plug" inside the rim of one of the rear wheels and attach a pulley to it. Then mount another pulley/shaft to the cart box and use a crank & rod to get your up and down motion? Sandwich some "pillow blocks" to the expanded metal side, I'd think a half-inch shaft would fit through the expanded metal. Pulley on outside, circular plate with offset pin ("crank") to drive the "rod" to create motion on the inside.

Sounds like a fun project!

 

[CertifiedMike]

I'd see if I could fit a "plug" inside the rim of one of the rear wheels and attach a pulley to it. Then mount another pulley/shaft to the cart box and use a crank & rod to get your up and down motion? Sandwich some "pillow blocks" to the expanded metal side, I'd think a half-inch shaft would fit through the expanded metal. Pulley on outside, circular plate with offset pin ("crank") to drive the "rod" to create motion on the inside.

Sounds like a fun project!

I like the idea of the mechanical rod and wheel. I think it goes well with the theme.



I think this is a fun project too. Please update!!!


Maybe next year we can 12s power the cart too!