Throwing Arm

After consulting some more with our architectural consultant, Marty, We decided to widen the arm from 3 1/2" to 5 1/4". This slightly wider arm will be about 10 times stronger left to right than the 3 1/2" arm was. We will put spacers in between the arm which will get it to the desired width and still keep it about the same weight.
I am in the process of widening the Sketchup file. I decided to take this opportunity to cleanup the model. Things have been piling up and getting a little out of hand. I don't like clutter and it kills me to have all of these different parts lying around in the file.
Regardless, things are looking up. I am going to check the CW axle strength and then I believe that's it for now. Once I contact a fabricator to do the remaining steel work I can make the final changes to the model and be done.
On a side note, construction of the machine has been a nagging concern for sometime now. We are going to be doing this with a skeleton crew and no machines. This makes every lift a challenge. I have been designing an overhead hoist that will fit on to the A-frames. It will help lift the main section of the throwing arm into place so we can slide the axle through. It may even help with the long section but I haven't determined if that is possible. It won't be very big and will help a great deal. The previous idea was a large stand whic had to be exactly the right height or the axle wouldn't slide through. This way we can raise or lower the arm to get it to where we need it.