Still working on a camera shutter. Curious problem illustrated in the attached file.
If I slide the timeline carriage back and forth between 35 and 45, the shutter opens and closes as it should. The rotating slotted disk that drives the individual shutter blades is shown to be working correctly. The shutter blades’ studs slide up and down inside the drive disk slots.
If I slide the timeline carriage back and forth between 23 and 28, the shutter opens and closes correctly, just as before. But the shutter blades’ drive studs are not captured within, nor sliding within, the slots. They begin and end well, but wander in and out of the slots.
The problem is – How do I confine the studs to straight line travel within the slots when the carriage is moved between 23 and 28?
The keyframes for the slotted drive disk were copied back (in inverse order) to 23 and 28 from 35 and 45. The keyframes work fine at 35 and 45, but the studs jump out of the slots between 23 and 28.
A puzzle to me. rotation rate problem.3dm (320.9 KB)
Thank you for your insights.