Bergstrand Turgo Turbine Design

This is an integral Turgo Turbine that I designed for a friend of mine. This wheel has my own bucket design, intended for low to medium velocity streams. So far, it's only been tested on a bearing without load, but I'm pretty happy with how it's working and I thought I'd share it. 

I printed it in ASA with 100% infill and a brim around the buckets to help it stay put. It takes a couple minutes to shave off the brim's flashing from the buckets, but I think it's worth it when you're asking your printer to cook for 15 hours.

There is some flexing at the stress point of the spoon. If it proves to be a problem under load, let me know and I'll address it. I don't anticipate it being a problem for low to medium velocity jets.

I've included STL files for the individual buckets and the runner. These can be bolted together if you're unable to print the integral piece. But remember that you'll have additional weight from the bolts and you may have slightly wiggle between the buckets and runner. The bucket “handles” might need to be beefed up for this use-case, as well. I intended for this to be an integral unit

Note: I know some people have trouble with ASA on the P1S. Here's my method.

1.) Use a second textured PEI plate for ASA.

2.) Apply purple Elmer's Glue Stick
3.) Closed door and top glass.

4.) Bed at 100 degrees C for 10 minutes before starting print process.
5.) Allowing full bed level process to do something useful while the machine soaks up heat.
6.) Success!