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+--- Thread: Mods to a shop/engine crane (/thread-2802.html)
RE: Gantry crane - dallen - 08-03-2015
be sure and put on your thermal undies and take an extra jacket with you just in case
RE: Gantry crane - stevec - 08-04-2015
Dave, 63.5mm plus two 5mm plates makes 73.5mm by my math.
Will it still fit? (your drawing shows a 2.5mm plate on each side but only 1 on the bottom.)
Steve
RE: Gantry crane - DaveH - 08-04-2015
It will fit Steve,
Goes into a channel 75mm wide x 70mm deep. The two 20mm dia holes are for the two pins, one pin is used as a hinge and the other to lock it either in the working mode or in the folded mode.
DaveH
RE: Gantry crane - DaveH - 08-07-2015
Got the castors (8 off) 125mm (5") wheel dia rated at 140kgs (300lbs) No plate - single bolt hole fixing.
[attachment=11557] [attachment=11558]
DaveH
RE: Gantry crane - EdK - 08-07-2015
Nice castors Dave. Is the hole for mounting them threaded?
Ed
RE: Gantry crane - DaveH - 08-07-2015
(08-07-2015, 11:04 AM)EdK Wrote: Nice castors Dave. Is the hole for mounting them threaded?
Ed
Thanks, the hole isn't threaded just a plain hole 13mm dia for M12 or 1/2" bolt. Although an hex hd bolt doesn't normally fit too good, can't get the ring spanner or socket in
so I tend to use a cap head/ button head.It there is access one can use a nut, otherwise a 12mm plate with a tapped hole is welded on.
The reason I went for the single bolt hole is because the plate size on the castor is wider than the 63.5mm sq tubing, I could have welded a plate on the bottom of the tubing and then I'll keep catching my ankle on it
DaveH
RE: Gantry crane - DaveH - 08-12-2015
Cut the 63.5 sq tubing to size and tack welded the side plates on, checked to make sure it fitted.
[attachment=11577] [attachment=11578]
Welded the side plates a little more and drilled the two 19.5mm holes, cleaned it up a bit and checked to see if the pins would fit.
[attachment=11579] [attachment=11582]
Must be my lucky day.
DaveH
RE: Gantry crane - DaveH - 08-12-2015
Fitted the new (go faster
) castors to the welding bench.[attachment=11581]
DaveH
RE: Gantry crane - DaveH - 08-13-2015
I forgot to mention I didn't put a 5mm plate on the bottom, just one 5mm plate on each side.
DaveH
RE: Mods to a shop/engine crane - DaveH - 08-16-2015
I'll just sit here and watch the paint dry
[attachment=11619]
DaveH