Very good work. But, isn't better a tangential output? Another point: if you put a pencil or something similar near the device, one can figure the relative size.
to make this a water proof unit go to your auto parts store and get an in tank pump for the gas tank. these motors run very high speed and can be run at slower speed for a water pump they last for ever. I worked in a shop we had a car come in with over 300k miles and was 15yrs old.
The impeller is made of cotton buds, where the liquid glue stuck rotor blades from the plastic packaging on the CD. In fact, as with https://www.instructables.com/id/Water-pump/.
Good question. :) The engine is fitted with melt adhesives, and is not isolated. This is obviously a mistake. First oxidised contacts and rusted engine. :-D After cleaning works normally again. However, I can not recommend this design for underwater use. : ( Displacement is about 30 cm in plastic straws from drinks. I have to make a waterproof version because I liked the sound of the fountain. :-D
I have no photos of the propeller itself, but I added some pictures of the pump, where the propeller is visible. It is made of plastic from a CD.
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18 Comments
sonu.banerjee.58 9 years ago
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