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Step 7Neck Drive Mechanism
Connect the aluminum main link [part K] to the plywood disk (part B) using a 1 1/2 inch quarter inch carriage bolt, 3/8 OD steel spacer, 2 to 3 ¼ inch flat washers, 2 to 3 3/8 flat washers, and ¼ inch nylock hex nut. The ¼ flat washers go on either side of the spacer, while the 3/8 flat washers position the aluminum link within the spacer.
Attach other end of aluminum main link to the motor driving link [part J] using 1 1/2 inch quarter inch hex head bolt, 3/8 OD steel spacer, 2-3 ¼ inch flat washers and 2-3 3/8 flat washers, and ¼ inch nylock hex nut. Use grease to lube the two joints.
Using motor mounting bars [part L] determine ¼ diameter hole locations in the moving platform so that the main link is vertical.
Although I used t-nuts and four-inch long screws, I later found it simpler to use four-inch long carriage bolts, nuts and washers, to create studs coming out of the moving platform. See photos.
Using nuts and washers on either side of motor mounting bars [part L], clamp and position the neck motor so the main link is vertical and moves without binding. Vertically position the neck motor so its centerline is 245 mm below neck main shaft centerline.
Re-bend a 1 ½ pipe clamp to better fit around motor rear section, add rubber padding to clamp inside surface. Use 4 inch long ¼ carriage bolts, nuts and washers, to attach pipe clamp to moving platform so it supports the motor, see photos.
Attach other end of aluminum main link to the motor driving link [part J] using 1 1/2 inch quarter inch hex head bolt, 3/8 OD steel spacer, 2-3 ¼ inch flat washers and 2-3 3/8 flat washers, and ¼ inch nylock hex nut. Use grease to lube the two joints.
Using motor mounting bars [part L] determine ¼ diameter hole locations in the moving platform so that the main link is vertical.
Although I used t-nuts and four-inch long screws, I later found it simpler to use four-inch long carriage bolts, nuts and washers, to create studs coming out of the moving platform. See photos.
Using nuts and washers on either side of motor mounting bars [part L], clamp and position the neck motor so the main link is vertical and moves without binding. Vertically position the neck motor so its centerline is 245 mm below neck main shaft centerline.
Re-bend a 1 ½ pipe clamp to better fit around motor rear section, add rubber padding to clamp inside surface. Use 4 inch long ¼ carriage bolts, nuts and washers, to attach pipe clamp to moving platform so it supports the motor, see photos.
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