Sousdey from Cambodia, and welcome to our project!
Following our first Instructable, How to make a very simple hand-operated water pump using components easily found around most properties, we have developed our project to address some of the problems and inefficiencies and we encountered with our first coil pump.
Here are our included improvements for this pump:
1. Include a central axle and bearing to more easily control rotation and rotational speeds
2. Include a swivel joint that allows the pump to rotate while the outlet pipe remains stationary
3. Increase the diameter of the hosepipe used in the pump
4. Increase the length of the hosepipe used in the pump
5. Use a single length of hose for the whole pump assembly
6. Increase the overall diameter and length of the pump to approximately twice their original size
7. Provide a jacket for the pump to protect the hosepipe during operation
The following steps of this Instructable detail how to make and operate our coil pump V2.0, which outperformed our V1.0 pump by 10x - we moved 21.7 liters of water through 3.1 meters of vertical height in 3 minutes... and there's still room for improvement.
Thanks for visiting - we hope you enjoy this build :D
Aziza's Place, Cambodia.
*Edit - Monday 05 September 2011 - The comments section of this Instructable has been handed over to students studying English at Aziza's Place. If you have any questions for the students, please ask them here... we'll get right back to you. (Moderated)
*Edit 2 - Wednesday the 14th of September 2011
The students are currently working on designing a source of motive power for this pump - see step 9.
*Edit 3 - Friday the 30th of September
We've now designed a power source for the pump - a garden swing - see here for 3 videos
For this project, you will need:
1 full day
a gas blowtorch or similar heat source
an old 8mm bolt
a sharp knife or strong scissors
a thin, flat spanner
a regular spanner
a metal bar or tube with a slightly larger outside diameter than your hosepipe
a large bucket
a bicycle wheel
an empty 20 liter water bottle with a screw-on cap (a bottle from a drinking fountain is perfect)
X meters of hosepipe
pvc plumbing fittings
brass plumbing fittings
a roll of 2" wide scotch tape
an old flip-flop
several large-diameter metal washers
one of the nuts that originally held the wheel onto the bicycle
a tub of automotive grease
a contained source of water for the pump