All Questions
8
questions
0
votes
0
answers
64
views
Belt conveyor roller spring
I wanted to know if anyone could help in this area.
I want to create an inclined conveyor belt where, when a cargo box reaches the top of the conveyor belt, the rollers sequentially move down (maybe ...
0
votes
0
answers
40
views
How can I reduce noise from pushrods in an assembly without using grease/oil?
I have an assembly which consists of a row of vertically-oriented nylon pushrods (each 5/16" in diameter, colored green in the attached pictures), and two black pieces of laser cut delrin ...
0
votes
1
answer
71
views
What would be an ideal material to use for O-rings on a canister in a lubricant-less, high-velocity pneumatic tube system?
I am interested in building an experimental lubricant-less pneumatic tube system in which the canister will be propelled up to a high-velocity, reaching a peak velocity of approximately 100 m/s before ...
- 303
2
votes
1
answer
72
views
Friction versus ratcheting pawl
We are working to design a lock mechanism and need to hold a square plunger out of a hole for extended periods of time (potentially years). The square plunger is under pressure from springs to return ...
- 21
2
votes
3
answers
129
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Building a machine from an ideal physics problem
I have a physics professor for whom I'd like to build a machine. Featured in a problem he is notorious for assigning students, originally from Kleppner and Kolenkow's "Mechanics," the machine causes ...
- 21
3
votes
2
answers
3k
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Good material for friction disk for a torque hinge?
What kind of material(s) would make a good friction disk, or disks, for a friction hinge, or torque hinge? This will be for the hinge on an arm that needs to be adjustable and also hold it's position ...
- 51
3
votes
2
answers
741
views
Suggestions for low friction surface materials for a "beltless static treadmill"
I'm currently developing a treadmill for clinic gait research. If I were to build a flat treadmill with no moving surfaces what materials or coatings would be worth exploring as walking surface. ...
- 41
8
votes
5
answers
8k
views
How do you attach something temporary to a smooth metal shaft?
I want to attach something small to the smooth metal shaft of a small motor (2-3 mm in diameter), like fan blades, but I want it to be temporary.
If I make it too loose, then the fan won't turn at ...
- 301