Sudden Slow-Down on Windmill


Printing was going just great today on my windmill then very suddenly, the press slowed to an almost halt. The belt is spinning the wheel very very quickly and the first open/close motion of the platen is at its normal, quick pace. However, immediately after, the whole thing slows way way down - to slower than a snails pace.

I gave the press a really good oiling last night and am pretty diligent about keeping it well lubricated.

Any one able to tell me what’s happening and how to fix it?

Thanks so much!


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Since you oiled the machine last night, the first place I would look is at the belt. Did oil get on it? If so the flywheel might have enough energy to carry the press thru one cycle, even if the motor/belt is slipping.

Just a internet armchair troubleshooting quarterback thought.
Would love to hear what you find out.



Any chance you could post a video of the slow down?

Is everything, including the motor, slowing down?

If you just let the press run without engaging the clutch does it run indefinitely or slow after a short time?



Check the ink ductor rollers we had one “walk” and wedged itself in the saddle where it sits, this caused the whole machine to “lock up” and not turn, but belt was trying to drive press.


Hi everyone -

Thank you so much for all of the help.

It turns out that the ancient belt needed replacing and all is well now. (Also, the old belt had a pretty good amount of oil on it which I suspect is also part to blame).