- #1
AamsterC2
- 51
- 4
- TL;DR Summary
- Maintaining a constant speed for a wheel being turned by a rope wrapped around its circumference
I want to make a small mechanical calculator with no electric parts, nothing too advanced but a few binary gates capable of some basic functions.
All the examples I were able to find were amazing but were still dependent on electricity to drive the mechanism. One possibility is a spring but I was also interested in trying to make it powered by a weight lifted up and connected to a string that is wrapped around a wheel. As the weight drops it spins the wheel and powers the mechanism. The weight would keep the torque constant but the speed would be variable.
The only thing I could think of would be to have a flexible or expandable surface that would be forced out by centrifugal force and could reduce speed by rubbing against the inside of a drum. This would enforce a maximum speed on the system but I don't think it's the best solution. What techniques/devices exist for controlling this sort of behavior? Or is there some other way that I could drive the mechanism that avoids this problem all together?
All the examples I were able to find were amazing but were still dependent on electricity to drive the mechanism. One possibility is a spring but I was also interested in trying to make it powered by a weight lifted up and connected to a string that is wrapped around a wheel. As the weight drops it spins the wheel and powers the mechanism. The weight would keep the torque constant but the speed would be variable.
The only thing I could think of would be to have a flexible or expandable surface that would be forced out by centrifugal force and could reduce speed by rubbing against the inside of a drum. This would enforce a maximum speed on the system but I don't think it's the best solution. What techniques/devices exist for controlling this sort of behavior? Or is there some other way that I could drive the mechanism that avoids this problem all together?