2015-05-10 (Su) Wind Generator Test Base

Before this blog was kept a project was done which drilled out 1/2" PVC fittings so bearings would bit in the ends securely. This method is convenient and inexpensive except for the drilling which produces less predictable results. One size up from the 1/2" PVC fittings is 3/4" which has a large gap between the bearing and wall so an adapter was modeled which would allow a bearing to sit on the end of a 3/4" PVC fitting. No mid-construction pictures were taken since the design was simple. A print was made with "supports" so the inner edge for the bearing would not collapse.

Concept of PVC test fixture

Program and model of adapter

Printed copy of adapter with supports

The adapters worked well and the bearing fit securely. This configuration allowed bearings to be stacked vertically at a uniform distance while maintaining parallel faces and concentric alignment. Changing to this design will eliminate the need for the the complex arrangement of shelves, plastic supports and bolts. This method will rely on the structural integrity of PVC. Solvent welding and size reducers will likely be employed to increase the strength of the the PVC frame.

Adapters in PVC Tee

Files for Wind Generator Test Base:
The OpenSCAD file below is not necessary unless you want to change something
 To do:
  • Design mounting rack for each test unit
  • Order bearings
  • Design electrical
  • Design and write program
  • Build
  • Test for usability
  • Go to next phase and test turbine designs

The rest of the posts for this project have been arranged by date.

First time here?

Completed projects from year 1.
Completed projects from year 2.

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2015-05-06 (W)