Thank you iab and sprockets,
Oh I saw it, they are came with same ideas, but the design was different.
That was very difficult to find any partners for my project, so I was self-working to design E-Wheel.
After a year of project development, to make my design come true, I intended to fund pleading on “Kickstarter” but I was quickly disappointed because they only accepted projects from resident of the United States or Canada. On the other hand, it’s almost impossible to call for fund in my country for “e-bike project”, the people (in Vietnam) don’t like riding the bike, they think that it isn’t convenient for their daily activities.
I sent a lot of proposal e-mail for related companies to looking for sponsorship. Until now, I have received no reply.
May be my design does not fit in their strategy or current manufacturing processes.