- #1
GreaseMonkey83
- 3
- 0
I have a heavy door that I am adding torsion springs too in order to make it easier for a human to open.
-The door weighs 460lbs.
-It is hinged on one side by two heavy duty hinges and uses a thrust bearing in each hinge with a friction coef. of .008
-the effective radius of the thrust bearing is 31/32"
-The door handle is 56" from the hinge
-The torsion spring will apply its force 0.75" from the hinge.
Id like to beable to pull with only 5lbf normal to the door at the door handle.
I should beable to open the door 90* in 4 seconds
Do i have enough information to estimate the amount of force needed from the torsion spring?
If so, where do i start?? thanks in advance for your help.
-The door weighs 460lbs.
-It is hinged on one side by two heavy duty hinges and uses a thrust bearing in each hinge with a friction coef. of .008
-the effective radius of the thrust bearing is 31/32"
-The door handle is 56" from the hinge
-The torsion spring will apply its force 0.75" from the hinge.
Id like to beable to pull with only 5lbf normal to the door at the door handle.
I should beable to open the door 90* in 4 seconds
Do i have enough information to estimate the amount of force needed from the torsion spring?
If so, where do i start?? thanks in advance for your help.
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