On Sun, 19 Mar 2017 00:17:56 -0000 (UTC), John Doe
wrote:

Took so long to make.

This might be the easiest to build electric bike there is,
versus power and reliability.

https://www.flickr.com/photos/27532210@N04/

Front 18" wheel direct drive, using DeWalt's DCD961 brushless
drill.

The fork is standard, so it can be put on any small bicycle
frame. Functionally not much different than a hub motor, but
there are probably significant differences in performance
(what exactly, I do not know).

The speed switch is intact, so I can play around with that.
It is meant to be on the lowest speed setting, should be fast
enough.

This design has been tested, but the prior version was not
nearly as efficient. Then, it drove a chain that drove the
rear wheel. All that is unnecessary given a drift trike front
wheel with a pedal hub (without the pedals) and a low-geared
cordless drill at no more than about 450 RPM (no load).

The drill kit cost about $280. Depending on your application,
extra batteries might be required. The drift trike front
wheel (an adult "Big Wheel") costs about $150-$200. Seems
overpriced, but oh well. Difficult to find many replacement
parts for drift trikes. Seems they enjoy it in Australia. Mad
Max on a Big Wheel.

For that price you can buy 2 wheels with hub motors that will fit
standard forks - and not have the fuggly and heavy drill-motor hanging
off the side - and it will actually RUN.

When you say it has been tested, how does it handle 200 lbs on a 5%
grade? How fast does it go? (and how far?) And you can NOT coast
with it. Totally useless setup in my opinion. (and I ride an electric
bike and have built one - neither of which uses a hub motor)