[PSUBS-MAILIST] Gantry lift

[JimToddPsub at aol.com]

Scott,
Try this link to see the specs and beam dimensions on a  9-foot wide 
gantry.  There are several other gantries on the site as  well.
Jim   
http://www.grainger.com/product/DAYTON-Portable-Gantry-Crane-7AJ30?s_pp=false
 
 
In a message dated 3/31/2014 3:32:02 P.M. Central Daylight Time,  
hanker_20032000 at yahoo.ca writes:

 
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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