Why is there such a big difference between linear acceleration and circular acceleration?
So...the answer is 7.4ft-lbs of torque on the 6in main cog. Also need to order a motor that can spike 100W.
Simon
You have to understand I am new at this and doing the best I can..
Yes, I do understand my own figures. I may not use the correct terms but I am trying to learn. Thats why I came here.
No idea what that means.
So...your saying that my f=m*a was incorrect. :(
mfb,
Sorry that I have not answered your question yet
A 40in wheel spins at 20rpm. Attached to its axle is a 6in gear also spins at 20 rpm. The gearbox is mounted to the white rod. If the white rod is held in place it causes the brown rod to spin a 80 rpm
To spin the white rod...
The torque will be on the main 6in gear locked to the axle. Please let me know if this is what you need.
Time:
20rpms = 1 rpms every 3 seconds
change occures every 1/2 rpm = 1.5 seconds
Flywheel travels 1/2 rpm =1.5 seconds
Reponse to for gears to fully engage .25 seconds
Answer for time is...
Simon,
It will have a hidden power source. There will also be a written desciption about its inner workings. The torque required needs to be in the discription.
What am I missing in the discription of this machine that everyone needs for the correct answer?
Russ Watters
"However, I'm guessing we have some sort of perpetual motion scheme here..."
Yes, you are almost correct. It is a pm but its not designed to work. This artwork nothing else.
CWatters
"Work out how fast you want the weights to spin up.
From that you can work out the torque you need to apply to the weights.
I think the torque on the white lever will be roughly twice (or is it four times that?) that."
Let me try a better example. The 40in wheel turns 3/4 of a...
The dark blue 6in gear is locked to the axle. It runs at 20 rpms.
The light blue 3in gear connects to the dark blue gear. It runs at 40 rpms
The green 6in gear and the light blue 3in gear are locked together. Both run at 40 rpms
The green 6in gear connects to the green 3in gear. The...
Cil,
Am I correct in my thinking here? The motor will connect to a 40in wheel. So, can you tell how many ft lbs will be needed at 40in to run this balanced system.
Cil,
"Wait - so you have one axle turning at 20 rpm, and a different axle turning at 80 rpm?"
Yes and no. I`ll explain a little more in detail. There is only one axle that acts like two. The gearbox is configured to, if held in place, turn the rod at 80 rpms for 1/2 rotation. All while the...
Cil,
The constaint applied rpm is 20. A 4:1 gearbox changes the rpm to 80. I`m just looking for the simplest answer. The project is a form of art that will be viewed by a large number of people. The handmade gears need to be able to handle the load without breaking.
The greatest amount of...
Simon,
The change will be instant. I understand most of your answer but being self taught has me at a disadvantage. So, being that the change is a jump from 20 rpms to 80 rpms what is the answer?