Planing to make water pump from a dc motor plz help?
Answer:
There are many types of pumps.
What you want to make is a "centrifugal pump". It works by spinning an impeller at high speeds, and does not require close tolerances, making construction much easier. The chief drawback of a centrifugal pump is that it requires "flooded suction" - it can "push" water, but it cannot "pull" water very well. The best-known example of a centrifugal pump is the water pump under a car's hood.
If you're not interested in doing this as a challenge, for the learning experience, you can easily find inexpensive pumps of this sort. People buy them to make decorative fountains, or for such utilitarian purposes as you propose.
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