The motor I ended up with is nothing like what I researched about. I got carried away with the research (I am finding this to be a theme in this project). When you are working with limited resources and budget, you cannot be a picky person. I ended up with 17.2 amp, 7099 RPM, 2.5 HP, and 130 VDC (volt) motor. Nothing like the 3 amp motor I thought I wanted. Also, I did not get the Volts to RPM ratio I wanted. In research, I found that a .035 ratio was ideal. I ended up with a .0183. Again, not quite ideal, but it will do.… When you travel an hour and a half to pick up a free treadmill posted on Craig’s List, and you take it apart to find a 17.2 amp motor, that is kind of what you are stuck with. That, and a lot of treadmill parts to dispose of.
What does this mean? Well, the scale of my project just got bigger, significantly bigger. I kind of feel like I was just trying to hammer a nail into the wall and I accidently knocked down the entire thing. I actually got myself really worried about the whole project as I stood in Menards trying to figure out what I needed. Things will just need to be bigger. Hey, more power to me though right. Really, I know right.
Here is what I ended up with:
Here is a picture of my husband trying to help me out and taking apart an old broken down hand belt sander. It turned out to have an AC motor… oops.
Soon, I will be posting about the blades. If you are interested in making 1 meter blades, I found an already thought through blade design for using PVC piping at http://www.youtube.com/watch?v=BawUfbDDvtA . He gives you tables which basically gives you an arc length to cut given how far along the length of the blade you are. I am going to research a little more on them before I decide what to do. I know research, smeesearch. It has not done a lot of good so far, but I am sure this time it will.
By the way, we do give thanks for the treadmill and the belt sander that was sacrificed in this process. For anyone who is concerned we will hoard the parts and make good use of them one day, or else we will take in the scrap metal to salvage their worth. Hats off to you treadmill and belt sander. May your parts become great contributors to science and making this world a better place.