All Questions
Tagged with mechanical motors
10
questions
0
votes
2
answers
31
views
How do rotate a picture on a wall once every 24 hours?
I have a picture with various day and night scenes that I would like to hang on a wall and have automatically and uniformly rotated once every 24 hours. The picture is roughly 55cm in diameter, 2cm ...
- 101
1
vote
1
answer
106
views
Stepper motor response under varying load
I had a thought that came to mind that made me curious-- Though unfortunately I am not an ME.
I was wondering if someone could assist me in working through my thinking, but you will have to be gentle ...
- 13
0
votes
0
answers
25
views
Which tool to measure shaft alignment for small diameter shafts (d=10mm)?
I have seen many tools and methods to check shaft alignment, but they are mostly used for big shaft. I wonder if there are small tools for small diameter shaft with limited space to install?
Can you ...
0
votes
0
answers
52
views
How to affix a 3/4" keyed bore wheel/pulley to 5/8" D-profile shaft?
How do I affix a 1.5-inch-thick wheel with a 0.75-inch keyed bore (or pulley) to my motor's 1.25-inch-long x 5/8" diameter D-profile shaft (both pictured)"?
- 101
2
votes
4
answers
105
views
Inverting motor polarities automatically to close and open a door
Hi,
I need to build a device that opens a chicken coop door.
The idea is quite simple, a motor connected to an axle that pulls a string up just like a wench. It would be activated by a relay timer ...
- 21
2
votes
1
answer
42
views
What are the characteristics of a motor that will generate current and is powered by a 30 cc, 2-stroke small engine?
Problem: I am trying to hobby-build a generator using a (old, working, throw-away gas, yard blower) 30 cc, 2-stroke engine. The 2-stroke engine will spin a motor and I want the motor to generate DC ...
- 121
1
vote
1
answer
184
views
Electric Motor Sizing : Understanding how much torque I need given Force
Physics has never been my strong point... I have a task to size a motor. The question is: Based on information below, how do I calculate required motor torque to accelerate a mass with the ...
- 11
5
votes
1
answer
664
views
Quick return mechanism for spring-loaded screw
I am looking for a way to convert rotary motion to linear, but it should take less energy to get back to initial position than when going from initial position to the end position.
Specifically, a ...
- 93
2
votes
1
answer
491
views
How to calculate torque requirement for vehicle with Mecanum wheels?
What changes are specific to mecanum wheels when calculating torque requirements for a vehicle? I have the vehicle's mass, top speed and acceleration data.
2
votes
2
answers
275
views
How does a two dimensional elevator work?
If you watch this video, you can get a sense of how an elevator can operate in two dimensions. But, what I can't figure out is how it is driven.
If you consider a conventional elevator, there is a ...
- 163