Mods to a shop/engine crane

[dallen]

be sure and put on your thermal undies and take an extra jacket with you just in case

[stevec]

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

[DaveH]

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

[DaveH]

Got the castors (8 off) 125mm (5") wheel dia rated at 140kgs (300lbs) No plate - single bolt hole fixing.

       


DaveH

[EdK]

Nice castors Dave. Is the hole for mounting them threaded?

Ed

[DaveH]

(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

[DaveH]

Cut the 63.5 sq tubing to size and tack welded the side plates on, checked to make sure it fitted.
       

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. 
       

Must be my lucky day.

DaveH

[DaveH]

Fitted the new (go faster ) castors to the welding bench.
   

DaveH

[DaveH]

I forgot to mention I didn't put a 5mm plate on the bottom, just one 5mm plate on each side.
 
DaveH

[DaveH]

I'll just sit here and watch the paint dry  
   

DaveH