Shudder In Vandy 215 (aka 4) Oscillator

Lately my Vandy 215 oscillator has a shudder as it travels back and forth. It actually seems to be stocking to the inked up rubber rollers below. I was able to stop the chatter by adding a small piece of lead between the metal roller assembly and the bearing block of the rubber rollers (see video and photo). I’m beginning to wonder if my motor may be at fault, if it perhaps doe not have enough power to keep the rollers from “sticking” to the rubber rollers, when they have ink on them. I have added a video with the sound, as well as a photo showing the “solution” which is not really a solution, as it affect even inking.

Harper-Vandy 215 rider roller

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Paul Moxon, Moderator
Admin
3 years ago

Use a degreaser
If it’s a brown stain, it may be from urethane rollers that melted once upon a time.

To polish the oscillator, riders, and drum, try Putz Pomade.

Paul Moxon, Moderator
Admin
3 years ago

Someone privately suggested that your crescent and/or worm gear might be damaged.

To inspect the crescent, spin the oscillator tube to cover the worm gear, loosen the setscrew on the end of the oscillator tube, remove the crescent holder screw from the tube, then push the tube away to reveal the crescent. Clean the worm gear and shaft, the first two inches of the tube, threads for the crescent holder, and the holder itself.

To replace the crescent, place it on the worm gear, move the tube over the crescent. Lubricate the inside of the holder with graphite, and lightly oil its threads. Insert the holder into the tube, screw all the way, then back off 3/4 turn and retighten the set screw.

Add Vaseline to the worm gear and the shaft at the other of the tube. Spin the tube to distribute the Vaseline and test the assembled oscillator.

Paul Moxon, Moderator
Admin
3 years ago

The ink motor should turn toward the feed board. There is no reverse switch. I recommend that you have a electrician rewire it for you. They can also check out the capacitor, power switch, power cord, etc.

Paul Moxon, Moderator
Admin
3 years ago

It’s possible, but I don’t think it’s a motor issue. More likely, one or more tie rods are bent.
Also, the rollers could be out of spec, perhaps flared on the ends. The diameter should be 2.5″.

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