Since my shop is a quonset hut,I cant put any weight on the building itself,so I made an A-frame too,out of a swingset they were removing from a local playground that was built by city DPW workers out of schedule 40 pipe.It was 30 ft wide when I got it,but I cut it down to 12ft so it would fit in the shop easier,and I made it so you can take it apart for transporting it to other locations via pickup truck.If I hadnt gotten that,I was going to build a "truss"that mounted to the concrete foundation walls on each side,and across the shop,out of channel iron,and use a chain falls on a trolley.The swingset worked out really well.I'm going to upgrade the lawnmower wheels I put on it to some big swivel casters I got from a warehouse cart,and use rear hubs and space saver spares from a FWD car on the other end.Its nice to be able to back your truck right under it and load heavy motors and other stuff in with no lifting!. /forums/images/graemlins/crazy.gif