Landships II

Eventually found an arrangement drg of the Mk V Unditching Gear for the Mk V.

Have assumed that the angle iron used would be the same on both tanks as spans and loads are pretty much the same.

Scaling off the drg, I get an unequal angle 52,5 mm x 78,7 mm (longer side vertical)

Looking this up in my old engineering books, this translates into a BSUA 105 angle of 3" x 2".  The thickness can vary between 0,25" and 0,375" - take your pick.

 

For future reference, this translates into:

1: 16     4,75 mm x 3,2 mm x 0,4 mm - 0,6 mm

1: 25     3,0 mm x 2,0 mm x 0,25 mm - 0,4 mm

1: 32     2,4 mm x 1,6 mm x 0,2 mm - 0,3 mm

1: 35     2,2 mm x 1,5 mm x 0,2 mm - 0,3 mm

1: 72     1,1 mm x 0,7 mm x 0.1 mm - 0,125 mm

Tony