08-01-2012, 09:16 AM
OK so the numbers have been crunched.
With the 3 x 4 x 0.250 HSS tubing, the maximum SWL is 2300 lbs. The limiting factor is the 1/4" flange thickness of the beams.
By using 3 x 5 x 0.375 HSS tubing, the maximum SWL is 3600 lbs. The limiting factor being the joists which the system will be supported from. This is also based on the bridge trolley being lengthened to 43 inches long and having 11 wheels per track so that the weight is distributed by at least 3 joists at any time.
So now to finish redrawing the prints, then to start amalgamating the materials.
I would like to thank everybody for their input, especially AAB who I met through the PM forum.
Walter
With the 3 x 4 x 0.250 HSS tubing, the maximum SWL is 2300 lbs. The limiting factor is the 1/4" flange thickness of the beams.
By using 3 x 5 x 0.375 HSS tubing, the maximum SWL is 3600 lbs. The limiting factor being the joists which the system will be supported from. This is also based on the bridge trolley being lengthened to 43 inches long and having 11 wheels per track so that the weight is distributed by at least 3 joists at any time.
So now to finish redrawing the prints, then to start amalgamating the materials.
I would like to thank everybody for their input, especially AAB who I met through the PM forum.
Walter
starlight_tools, proud to be a member of Metalworking Forum since Apr 2012.