Push the spindle rod through the bearings, which must
be adjusted until the rod can be revolved easily with the fingers. Then
solder in the bearing with a "Tinol" lamp.
The Wheel.--Anneal this well by heating to a dull red and plunging it in
cold water. Mark a circle of 1-1/4-inch radius, and draw radial lines 1/4
inch apart at the circumference from this circle to the edge. Cut out along
the lines, and twist the vanes to make an angle of about 60 degree with the
central part, and bend the ends slightly backward away from the direction
in which the rotor will revolve. (The directions given on p. 189 for making
a steam top wheel can be applied here.)
Bore a hole in the centre to make a tight fit with the spindle, and place
the rotor in position, with piece B in contact on the C side. Get
everything square (rotation will betray a bad wobble), and solder the three
parts together with the blow-lamp.
Mount the rotor squarely by the spindle points between two pieces of wood
held lightly in the vice, and, with the aid of a gauge fixed to the piece
nearest the wheel, true up the line of the vanes.
Pages:
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150