It was over a year ago when I first applied for patents and started this bike project.
The most challenging part was and is… trying to find “off the shelf” gears that would give me the proper gear ratio for hand propulsion. They pretty much don’t exist as standard sizes that would work for my front wheel drive application. In order to get decent pricing you have to go overseas and order 500 gear sets at a time.
While waiting for parts I have re-developed a pretty cool looking chain version which I intend to add to my dual drive bike line. This chain version I can start selling soon.
I have several working Prototypes now and intend to get the “crowd funding video” completed this month. You can’t rush into this project. It takes some time to develop and through trial and error the perfect set-up is achievable. I have been working with cad design guys I found on ODesk. That site is a lifesaver!
ken haan 