2012 at the Hammond Barn

[RHClarke]

I had some time on my hands today, so I went to the barn to put a few things away (more on that later) and to measure some hatch hardware for Grant.

There is a flat metal ring that is mounted on the inside of the cab by 16 flat head slotted stove bolts of varying lengths. These bolts pierce the inner ring, the roof, the wooden spacer and finally the outside flange on the steel hatch ring. The bolts are affixed to the outside ring by washers and nuts. The holes on the passenger side of the ring are countersunk so that the screw heads do not pose too much of a danger to tall passengers.

The inner metal ring is composed of three sections of steel that have been bent and welded together in a ring (for diameter see Phil Waterman's excellent website). The metal ring is approximately 24mm wide and is of the same gauge as the outer ring flange.


Photos:

1- Inside hatch ring
2- Countersunk holes (mind the blurry photo)
3- Width of inner hatch ring metal
4- Do you know what these are for?