[PSUBS-MAILIST] Gantry lift

[hank pronk]

Scott,
You should not make the same mistake I made, 8 feet is not enough.  Go with at least 9 feet inside.  
I use a 8,000lb warren winch with a single pully block and that is perfect.  I have to build a new gantry because I built mine with stuff I had instead of buying proper material.  I am building A frames with 2in square 1/4 wall.  Then a 10in I beam across the top with a 10 foot span.
Hank
On Monday, March 31, 2014 2:09:55 PM, "swaters at waters-ks.com" <swaters at waters-ks.com> wrote:
  
Hey guys, 

I am wanting to build a gantry lift in my shop so I can put my sub on the trailer and take it back off the trailer without having to pay to rent a telehandler. It would need to hold the sub (4500 lbs) plus a little extra. I was thinking of building it out of I beams. I know nothing about structural design with I beams but I believe it should be pretty easy. The gantry lift would be 9' tall and 8' wide. What size I beams should I use? 

Also what is the best kind of winch or block and tackle device to use that is inexpensive? 

Thanks for the help, 
Scott Waters
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