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City Windpumps #3 - Harvesting at Random Mystery Cache

Hidden : 9/15/2011
Difficulty:
2 out of 5
Terrain:
1.5 out of 5

Size: Size:   micro (micro)

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Geocache Description:

A Puzzle cache in a beautiful Indigenous nursery. The published co-ordinates will NOT take you to the final cache location.

City Windpump - Harvesting at Random

This cache is only accessible Monday to Saturday from 08h00 to 17h00. Please respect these times and do NOT attempt this cache during any other time.

This Windpump is located in a beautiful indigenous nursery. I guess you could say it is still located "in the country". But it is still very close to developed suburbia, so I've included it in my series.

The owner is aware of the cache and has given her permission to place it. Please take care when you approach the cache - do so from the back of the windpump, through the pots. Please do not rearrange things or climb over the retainer wall on the side.

I was fascinated to find a number of farm windpumps still standing in what is now developed suburbia. Through geocaching, I share my fascination with you.

These Windpumps are a reminder of our farming days of yesteryear.

From South African photographer Chris Myburgh's website:

"The first records found of a windpump in South Africa, is from a painting drawn in 1848. Records were found of windpumps as from 1869 and the first import was in 1874. These were wooden constructions. The first all steel windpump was patented in 1855 in England."

There are a number of types of windpumps manufactured both locally and abroad. Each manufacturer has its own style and branding. You'll notice the Manufacturer's branding on the Wind Vane.

Windpumps (Windmills) are fondly referred to as "steel flowers" especially in the Karoo area where they can be found in abundance, providing much needed water to the farms.

Taken from the website: http://www.dwa.gov.za/groundwater/NORADToolkit/7.2%20Introductory%20Guide%20to%20Appropriate%20Solutions%20for%20Water%20and%20Sanitation.pdf


"What is a wind powered pump and how does it work?

Wind powered pumps use the energy generated by wind to lift groundwater to the surface. A rotor is mounted on top of a tower. The action of the wind turns the rotor, which through a gearbox drives a reciprocating shaft. This in turn drives the pump in the borehole.

Windpump Schematic - How it Works

Wind pump adaptations

The air-lift groundwater pump was developed to provide a low-cost pump for use in informal and rural settlements. This pump system can be operated with tyre pumps. It has a wind pack compressor, capable of storing wind energy as compressed air. This provides supplementary power to the pump. All the working parts of this pump are located above ground, making maintenance easy.

Wind pump requirements

The pump requires sufficient wind speeds for significant lengths of time. The wind pump must therefore be placed where there is a clear sweep of wind. Also, the borehole should provide enough water so that continuous pumping does not result in excessive drawdown. Storage for several days must be provided to cater for calm periods when there is insufficient wind speeds to pump water. Further, someone must be delegated to apply the manual brake to avoid damage during storms.

To calculate the final co-ords, please do the following:
1. "WIND" - use the keypad on your phone - convert the letters in this word to numbers
2. "WATER" - use the method a=1, b-2, etc. - convert the letters in this word to numbers

Take the SUM of the numbers in 1. and ADD 775 to get ABC.

Take the SUM of the numbers in 2. and SUBTRACT 707 to get XYZ.

Substitute your results into the co-ords below to get the final location:
S 26 01.ABC and
E 027 53.XYZ

You can check your answers for this Puzzle Cache by clicking on this Geochecker link:
Geochecker.com

Additional Hints (Decrypt)

Zntargvp

Decryption Key

A|B|C|D|E|F|G|H|I|J|K|L|M
-------------------------
N|O|P|Q|R|S|T|U|V|W|X|Y|Z

(letter above equals below, and vice versa)