Working Models

Step-by-step Instructions to build a working model

Hydro electric power generator
Solar Still
Water level indicator and alarm
Hydro electric power generator
Contributed by Vasudevan Srisailan
Solar Stills
Contributed by Eva Johnson.

Water Level Indicator Alarm

Contributed by Electronics For You


Following working models are courtesy - Arvind Gupta Toys

Squeeze pump 1
Squeeze pump 2
Inertia Pump:
squeeze pump
Make a pump with just an old bottle and some cello tape.
squeeze pump
Try making this with a small variation. A coin does the trick.
Inertia pump
Modifications of this simple pump is still used in parts of Andhra Pradesh to lift water.
Inertia and valve pump
Straw sprinkler
One Minute Film
Inertial valve pumps
An extension of the previous pump
Straw Spinner
With an ordinary plastic straw, broom stick, cello tape and scissors
you could make a real centrifuge in a jiffy.
Straw Spinner
One minute film on how to make this
Coin pump
Rotary Pump
Jumbo pump

Coin Pump

Make a water pump using a film can, bottle cap, coin, cycle spoke and other trinkets
Rotary Pump
This pumpis like the one used to draw water from a well
Jumbo Pump  
Pipe and bottle cap pump
Rubber Bulb pump
Jumbo Syringe pump:
Pipe and bottle cap pump   Rubber Bulb Pump
Try a variation and use a syringe instead of a film can
Jumbo Syringe Pump  
Air Water Pump
Toothpaste tube pump
Two straw pump
Air Water Pump
This pump can be used to lift large quantities of water
Toothpaste tube pump
Finished with a toothpaste tube? Not just yet. Try out this pump instead of throwing the tube in the dustbin
Two straw pump
A couple of straws, some beads and ball bearings is all you will need to make this pump
Pen pump
Pen Pump 2
Syringe pump
Pen Pump
Using an old pen body as cylinder, thread wrapped bicycle spoke as piston and a cycle ball bearing as a valve you can make a very workable pump
Pen Pump
Use a straw instead of the pen body
Syringe pump
You can make a simple force pump using two plastic syringes and other common things
Hand pump
JCB Truck
Submarines

Hand Pump
Understand the working of a hand pump
JCB Truck
Designed by V C Kandkur, understand the principle of hydraulic pressure and make this JCB truck
Submarines
This experiment shows you how a submarine works. Jazz up the bottle to make it look like a real submarine
Water turbine
Water turbine 2
   
Water turbine
Make this turbine first
Water turbine
Try the hydroelectric power generator model detailed on this site
   
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