Success criteria and discussion: The overall values passed our requirements (08 minutes < 10 mins), and 3 out of five actual experiments were succeed at the TEST #2. Also the distances of full-battery trip were 3.5, 6.8 and 7.7 miles without the support of pedaling force. This result could be improved by adding a second battery to the system, which would only cost $8.99 more in the budget. One of the reasons these experiments turned out to be successful might because they were performed by the designer. If a costumer do not know any information about the mechanism, the installation may take few minutes extra.
Therefore, including a users’ manual for instructions would be recommended to obtain satisfying results.
( TEST #2 ) a pure motor-drive ride was fast as pedaling