Insert a 1/2" x 2 1/2" bolt and tighten with washers and nut.
Seat the top shaft end piece in the bearing on the 2x4" top bearing support beam.Support each
end of the beam about three feet off the ground, just like the bottom beam.
The rotor must rotate freely in the bearings, without resistance.
The pipe shaft should be at right angles to the plane of rotation of each bearing.The bearing
support beams should be parallel to each other. If either of the bearings you use are adjustable
with set-screws, and the rotor does not turn freely enough, loosen the bearing from the beam,
adjust the screw, and then tighten the bearing back to the beam.
Test the adjustment by giving the rotor a turn. Repeat as necessary until smooth movement is
achieved. If there is no way to adjust the shaft placement in the bearings you use, you may have
to make slight compensations in the placement of the bearing support beams relative to the pipe
Balance the rotor according to the procedure giver on page 39. Final adjustments should be made
on the rotor in its final, vertical position.
NOTE:New bearings may be stiff until they are broken in a little.
Because of the (grease) packing. Turr the rotor a number of times to begin this process.Do not
confuse tight movement with rough movement.
BEGIN ERECTING THE ROTOR FRAME
You may assemble the frame and rotor on the ground and then erect into position; or proceed as
Sink two tall 2x4" wood vertical frame supports into the ground so that their inside surfaces are
6' apart, and two shorter pieces of 2x4" wood right up next to the inside surface of each of the
All the supports should be firmly embedded in the ground.
The bottom of the rotor should be about waist high. Cut each of the tall vertical supports long
enough to include the portion that will be in the ground, the distance from ground to waist, a
distance equivalent to the height of the rotor itself (from the point where the top bearing meets
the shaft to the point where the bottom bearing meets it), plus an extra foot or so.
The top ends of the shorter supports should be at least waist height; the bottom bearing support
beam will rest on them. This beam should be perfectly horizontal, so make sure the ends of the
short supports are aligned at the right heights. Nail them into the tall supports.