Thanks for all the replys and help. Been a few years since I was that deep into calculations so I just wanted to make sure what I was doing was correct. Not worried about the friction in the system. For this project close is close enough.
I'll make sure I post up calcs next time.
The cam specs will normally give you degrees of duration at .050" of cam lift. This is how many degrees of rotation is takes to go from .050 open to .050 from being closed. You might also get a duration from 0 to 0
Here is an example of cam specs...
Would really be a big help if someone could look at my drawing and verify what I have come up with.
Basically pulleys with cable wrapped around then and a weight hanging off the bottom. What I am interested in is what the wight pull at the pull scale would be and if their is any left or right...
I am looking for somewhere to get a gear motor for a very low budget project, specs as follow:
Voltage = prefer 110v, could be 12 if the price is right
RPM = 15-20
Torque = 100 inlb
Quiet as possible
Reversible
Something else that would be a bonus:
Soft start and stop, gradual start...