Like my outdoor chandelier project
, most of the parts for this wind pump came from the bicycle shop dumpster. I don't know the names for all these parts, so I'm not naming them. What I can say is that the gear-looking pieces were not gears on the bikes (I turned them into gears by adding bolts). I found them on mountain bike wheels, and they can only be installed on a wheel that had one in the first place.
I'm also not sure what the best order is for putting this wind pump together, so I'll just rattle off what I did.
1. Added small bolts into every other hole in one of the "gears." For the top (horizontal) gear I used shorter bolts; longer ones for the vertical one. I left the top bolts as is and put nylon spacers over the vertical gear "teeth," securing them with Teflon tape.
2. Attached the horizontal gear to the axle of a mountain bicycle wheel.
3. Attached a second bicycle wheel rim to the first using three metal brackets (mine ended up shorter than shown in this picture due to a change in plans).
4. Found a way to secure a 1" PVC tee to the top of a tripod.
5. Installed the bicycle wheel contraption into the top of the PVC tee. I used a couple wooden circular pieces drilled out of a piece of 1x2. The hole in the center of the wooden pieces held the axle rod firmly in place. I used a couple odd pieces as spacers to elevate the horizontal gear to the spot where it would catch the vertical gear.
6. Installed the vertical gear into the horizontal part of the PVC. The gear must sit on a ball bearing so it can rotate freely. I used part of an axle that had a bearing inside. Use whatever you can find to "stuff" the gear into place and keep it from wobbling.
I had to do a lot of shimming and shaving to get things to fit. I shimmed with toilet paper cardboard and shaved with a dremmel or sandpaper. You do what you gotta do.