e-bike?

My Office is around 15 kilometres from my residence.
And I am fed up with the traffic jams here in Bangalore, the periodicity of buses.

So I said, lemme try going to the office on a bicycle.
I tried it on the weekend.. and guess what it just took me 10 more mins than what the bus takes! [8:25 AM to 9:25 AM]..
But I was too tired and coming back from the office at night [10 PM] was miserable..

Bicycle is good.. but I need a power assist added.. Pedal whenever you can.. and if you dont feel like it, just turn on the motor and there you go!

It is not difficult to add a motor to the bicycle.. just a few hand calculations, few trips to the workshop and a few instructions to the workman.

Google is my friend:
This is a read good website:
http://www.peltzer.net/ebike/
www.estelle.de

The commercial e-bikes
http://www.electric-bikes.com/

I had seen a person use a 0.5 HP DC motor, 24V batteries.. the guy above uses a 1HP [746 Watt],3000 rpm motor.
btw, TXU Turbines are 1000000000 Watt [:)].. A thousand Megawatt

Say I want to go at a speed of 20 kmph and the wheel diameter is..
I need to do the calc and come out with the spec for the

motor,
batteries,
charger,
the speed reducer,
the motor speed controller,
dimensions of the supporting structure,
etc

Motor would be a major cost here I believe, Need to ask is some shop here or look for some flea market in case a new motor is too costly [A motor from a washing machine would do]

btw a new e-bike costs 16000 INR (The pamphlet said that it costs only 80? paise per km)
Will do some more research and come up with the design..

I want to be at the office tomorrow morning at 6:00 am.

Hope that such wishes get fulfilled in the near future :)

Update 1:
I bought a second hand DC motor[1200 INR], 0.5 inch [thickness] 18 and 38 teeth sprockets, a chain [all three costed me 768 INR] and two small metal sheets for housing the motor.. Will upload the photos of my endeavour later.
I need to go to the workshop to bore the sprockets and to drill them metal sheets and assemble all of them and get my bike ready [:)]
getting work done at the workshop is tiring.. so I would do this manufacturing/assembly thing the week after next..

My friends are excited about the effort!..
Will keep you updated