Fitting the vertical arms

View from bucket-wheel end

Awaiting vertical arms

View of winding drums from below

All set to install vertical arms

Lifters at the ready!

Front vertical arm going up

On the way up

Safely at 9 feet

Manoeuvering the front vertical arm into position

Moving front vertical arm forward into position

Putting M10 bolts in place

Mission accomplished, Part 1

Sending 2nd vertical arm upwards

Getting 2nd arm into position

Another bolter at work

Just enough head room!

Attaching service crane

Service crane at ceiling height (about 17 feet) on top of back vertical arm

View from below - service crane in place on top of  2nd vertical arm

Mission accomplished, Part 2!

Whew! Now for the cables

The vertical arms

Both vertical arms have been constructed, the longer being 9 feet long and is shown below:

Vertical arm

Visible in the above picture are the bearing boxes for 16 four inch diameter aluminium pulleys which allow the main bucket-wheel arm to be raised and lowered by cables onto 2 winding drums at the far end of the counter-balance arm (which has yet to be built).

Bearing box for aluminium pulleys at top of vertical arm

The 2 vertical arms can be clearly seen to the right of the bucket-wheel