Re: Arm goes down too fast?
 

We played with it and boy are we happy now.

Other then some bouncing from other factors were working on, its now wonderful.

Will look for surgical tubing, because our balance point is pretty much about 6" above the floor with the bungee cords.

Thanks for everything guys!

Re: Arm goes down too fast?
 

Happy to help. New video?

Re: Arm goes down too fast?
 

Soon, its still bouncy but we know why we just didn't get to fix it yet. So the video will look similar to the last one. I'm waiting for our camera guy to send it to me :P

This helped alot though. Were getting surgical tubing tomorrow. How would you suggest tying it?

Re: Arm goes down too fast?
 

In knots...

Re: Arm goes down too fast?
 

Oh, I thought there was some fancy way. I thought that if you did that, when you tension it the knots will just slip through whatever its tied to..oh well I'll have to try it tomorrow.

Re: Arm goes down too fast?
 

We tie it in a knot. Take the two ends, hold them next to each other, ends pointed the same direction, and tie a single normal overhand knot with both ends at once. That makes a loop. Then anchor the loop at both ends over something round, such as a 1/2" od nylon spacer with a 1/4" bolt thru it holding it to the robot or arm or whatever that end needs to attach to. If you make the anchor end adjustable, then you can adjust the tension as needed.



for example

Re: Arm goes down too fast?
 

We found a spring, about 1" in diameter and about 6" long. When we stuck that on and gave the cables slack, the arm floated almost exactly horizontal. That works, then!