Explain why a bicycle pump is not classified as Turbo machine
Answers
Answer:
a bike pump is intended to set a tire pressure with 1psi precision or better. to accomplish this, it’s easy to operate the pump on half and quarter stroke. You can’t do that with a rotating pump.
You still need to convert linear motion to rotary motion. This mechanism alone will cost the same as a conventional pump. Unless you are planning on mount the pump direct drive on a bicycle…
A bike pump is a simple piston cylinder with an o-ring piston ring and valve made of rubber. A home shop machinist can build one in less than 4 hours from junk. A turbopump might take hundreds of hours at best. How is a manufacturer going to conquer this problem to deliver thousands of little pumps that can’t sell at $50MSRP?
A better question would be, “why not make 1.5kW turbomachine electric air compressors?” Ok… do it and call us back. It would be nice to have a fist sized compressor that does not thump and rattle.