Is this possible and if so, what size spokes do i need?

[tomtom123]

could i get this http://www.ebay.com/itm/Rear-Wheel-Electric-Bicycle-Conversion-Kit-24V-36V-48V-250W-500W-700W-800W-1000W-/290754592384?pt=LH_DefaultDomain_0&var=&hash=item43b252fe80

take out the motor and then install the motor on a 29er mountain bike wheel? i should right? if so, what size spokes do i need to get to hook the 29inch wheel to the motor?

 

[MadRhino]

You will need to have the motor, bike and rim in hand, or to know their exact dimensions, to calculate precise spoke length. Then, it is better to use a slow motor to fit in a 29er wheel. If the motor is fast it will have poor performance and efficiency in a large wheel.