Simple Electric bike idea?

Yep, and the chain goes in serpentine around the CCW motor sprocket to catch enough teeth.

Note the important part...

Kit Specifications:
Included Parts:
360W Motor w/ Controller, Gearbox & 14T Freewheel Sprocket
Motor Mounting Bracket w/ Spacers & Bolts
44 Tooth Freewheeling Chainwheel
Bottom Bracket Spindle
Left & Right Crank Arms - 170mm

Twist Grip Throttle
2ea. Handlebar Grips
2ea. Brake Handles w/ Motor Cutoff Switch
Note that batteries are sold separately.
Battery Connecting Harness
$450.

A freewheel chainring/pedals combo to isolate motor power from your feet.
If you value your feet and ankles at all DO NOT apply power directly to your pedals because you will eventually be paying hundreds if not thousands of dollars more than you saved in medical bills.

I use motors with the same planetary gear box on it, the motors are just a bit longer, use an external programmable controller, and will take 24-48+V up to 1.8KW.
The kicker is, these kits are $50 less
http://www.sickbikeparts.com/catalog/index.php?cPath=26&osCsid=446egcvkao99ltvijlj4k4cca3

To hub or not to hub?, that is the question.

Is this too cheap?

http://www.ebay.com/itm/48V1000W-26-Rear-Wheel-Electric-Bicycle-LCD-Display-Motor-Kit-E-Bike-Conversion-/191497230021?pt=LH_DefaultDomain_0&hash=item2c961fd6c5

All the best!
 
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