I'm not a mechanical engineer. I'm working on a kinetic sculpture that will connect a vertical-axis wind turbine to a drum mounted on a lazy susan type platform (a board on a thrust bearing). I need to couple the two with some gears -- spur, bevel, helical, whatever -- and I need the wind turbine to turn about 30 times for each turn of the rotating drum.
I've looked everywhere for gears online and have found gears that are very expensive and industrially machined which are overkill for my project. I've also found small assorted gear packages that seem to light and too small to incorporate into a project built mostly from wood, screws, and nails. These packs of assorted plastic gears also seem to lack the proper shafting, hubs, and couplings in order to get everything to connect.
I was hoping someone might recommend a place where I might obtain some gears for this project. Minimally, all I need is two gears (with
100-1 tooth ratio) that I can screw directly onto the pieces of wood. Obviously, really small gears would require extremely precise placement of my wood components so bigger gears are desirable.
Assorted plastic gears with appropriate shafting and connector hubs would also be acceptable. Any help would be greatly appreciated. I could really use some standardized gears and shafting that I can connect without the need for a machine shop. Ideally I wouldn't need all kinds of shaft couplings and shaft collars and stuff.