Best motor and controller combo for fast ebike

[ic3wall]

Hi,

I just joined the forum because I have many questions to ask!

I'm currently working on building a battery pack from Li-ion cells coming from electrical tools (drills...).  My plan is to build an 26" ebike than can easily cruise at 30mph (50km/h), don't worry the battery pack will be designed consequently.  My questions are as follow:

-Is the Magic Pie II with external controller the best choice ?
-Which controller should I go with ? (something not limited too much in current I guess...)
-Is Cycle analyst the best choice for monitoring?

Setup will be mounted on a light mountain bike.

Thanks for your advice.

[Andrew]

the Magic Pie motor will make 30mph but not with the GM controller which generally restrict current to about 750w, you'll get about 22-24 mph on a 26" 

cycle analyst not necessary

Check that your mountain bike drop outs(rear) are deep to hold onto the torque of a pie. My specialized Stump jumper frame has caused me many problems in this respect as it is designed for quick release spindles which don't require much depth.

[ic3wall]

so which controller would you suggest?