My first build of a motor bike was with the Solex motor. It is French designed friction drive motor used on the front wheel of a bike built also by Solex. It is perhaps a 60 year old design. I purchased the Solex on ebay from a vendor located in Canada. The motors he was selling were new and made in China. It came as a kit with brackets and controls for mounting to the front fork. The motor kit cost me about $230 delivered to my home. I purchased a new cruiser type "NEXT" bike from WM for about $100, mounted the motor in the front and began riding my first motor bike. It was love at first ride. There were a couple of things I did not like about the motor in front. Exhaust and black oil splatter from the from the muffler connection, hit the rider. The weight of the motor on the front wheel made the searing strange. I decided to try mounting the motor on the rear wheel. The mounting was quite easy and clean. It also got rid of the big ugly steel fork mounting clamps, it was more quiet and the stearing was much better. See the second photo. I love to ride this bike. It is very quiet, smooth and has enough power to go 20 mph on the level. I will tell more about my second build in a another post.