Can hydraulic systems replace ebikes in power assisted cycle

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SUMMARY

This discussion centers on the feasibility of replacing electric motors in power-assisted bicycles with hydraulic systems. Participants argue that hydraulic systems, while capable of amplifying force, are inherently less efficient than traditional chain and sprocket drives. The conversation highlights the limitations of hydraulic accumulators in terms of weight and bulk compared to electric batteries. Ultimately, the consensus is that while hydraulic systems can offer unique benefits, they do not match the efficiency and simplicity of electric systems or mechanical drives.

PREREQUISITES
  • Understanding of hydraulic systems and their components
  • Knowledge of mechanical drive systems, specifically chain and sprocket mechanisms
  • Familiarity with energy storage methods, including hydraulic accumulators and electric batteries
  • Basic principles of energy conservation and efficiency in mechanical systems
NEXT STEPS
  • Research the efficiency of hydraulic systems versus electric motors in cycling applications
  • Explore the design and functionality of hydraulic accumulators
  • Investigate advancements in variable ratio hydraulic motors and their applications
  • Learn about energy storage technologies in electric vehicles, focusing on regenerative braking systems
USEFUL FOR

Engineers, bicycle designers, and enthusiasts interested in alternative propulsion systems for bicycles, as well as those exploring the efficiency of hydraulic versus electric power systems.

  • #31
It is very hard to be an inventor if you can't do the calculations and check the conservation laws, and don't have support from a helper who can do it for you.

Without that, about the only way to succeed is to build a working prototype.
 
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  • #32
anorlunda said:
It is very hard to be an inventor if you can't do the calculations and check the conservation laws, and don't have support from a helper who can do it for you.

Without that, about the only way to succeed is to build a working prototype.
I agree for the most part, but being an inventor of things in ones mind is easy, transferring the ideas to others becomes the hard part if one does not have the proper education.
Before this thread goes into the almost dead zone, I do want to encourage anyone in a mechanical or electrical path to look very closely at what is possible with both hydraulic and electric working together, they are almost the same in many ways.
This might make a great senior project and in my mind has some very unique variations of what is the current norm.:smile:
 
  • #33
RonL said:
I agree for the most part, but being an inventor of things in ones mind is easy, transferring the ideas to others becomes the hard part if one does not have the proper education.
Inventing things in your mind isn't inventing, it is imagining. Inventing means actually designing or creating the thing.
 
  • #34
russ_watters said:
Inventing things in your mind isn't inventing, it is imagining. Inventing means actually designing or creating the thing.
I will have to respectfully disagree, the patent office has many patents, filed by inventors, which have never been built.
https://en.wikipedia.org/wiki/Invention

Invention is often a creative process. An open and curious mind allows an inventor to see beyond what is known. Seeing a new possibility, connection or relationship can spark an invention. Inventive thinking frequently involves combining concepts or elements from different realms that would not normally be put together. Sometimes inventors disregard the boundaries between distinctly separate territories or fields.[citation needed] Several concepts may be considered when thinking about invention.

Re-envision[edit]
To invent is to see anew. Inventors often envision a new idea, seeing it in their mind's eye. New ideas can arise when the conscious mind turns away from the subject or problem when the inventor's focus is on something else, or while relaxing or sleeping. A novel idea may come in a flash—a Eureka! moment. For example, after years of working to figure out the general theory of relativity, the solution came to Einstein suddenly in a dream "like a giant die making an indelible impress, a huge map of the universe outlined itself in one clear vision".[15] Inventions can also be accidental, such as in the case of polytetrafluoroethylene (Teflon).
 
  • #35
This is great idea! But transferring the ideas to becomes real so hard.Anyone help you ?
 
  • #36
johnsherdy10 said:
This is great idea! But transferring the ideas to becomes real so hard.Anyone help you ?
Not sure if this is directed at Tabaristiio or me, so I'll give my short answer...this is basically the first time I have shown my drawings to anyone, as I had pretty well come to a conclusion the design would be far too complicated for a minimal return.
 

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