I haven't been on the site for months and when i checked in today I had 6 unread messages. For some reason I don't get an email notifying that i have a message. Sorry for being a deadbeat member. I am adding some additional pictures and details that hopefully help everyone out
Lift frame
1"x2"x.125" wall rectangular tubing about 30ft total
2 pcs of 20' Unistrut P100HS
http://www.unistrutohio.com/products/p1000.html
4 unistrut trolleys
http://www.mcmaster.com/#strut-channel-systems/=qcqae0
1 -5/16" u-bolt
4 - 5/16" eye bolts
2 - 30" chain lengths
2 - turnbuckles
880lb Harbor Freight hoist
1 -3ft leftover piece of unistrut
4 - L Strut Brackets
4 - Pcs of 1/2" Threaded rods
12 - 1/2" nuts
8 - 1/2" washers
-When i built new garage I had double trusses installed on both sides of where the lift was going. Then we install floor joists doubled up and headered off where the opening is.
-Then i went to a local supply house and bought two pieces of 1-5/8" x 20' unistrut. The type with holes on the back side for mounting.
-Installed unistrut at same width as frame of the lift platform with lag screws into horizontal bracing installed between studs in the wall. I ran the unistrut up from the garage floor through the opening and into the attic about 3ft. This must be done so when the platform is all the way up in the attic the trolleys are still inside the unistrut / track.
-Then i bought some .125"x1"x2" rectangular steel tubing. Cut all pieces to length then welded frame together.
-Installed 4 trolleys (mcmaster carr part #3626T14) on the back side of the vertical portion of the lift platform. These ride inside the unistrut.
-Hung a leftover piece of unistrut from attic trusses with 12" sections of all thread and heavy duty angle brackets.