I thought this was interesting because we're always debating whether Walmart bikes are good for building a motor bicycle. A lot of us believe they're ok, myself included, but there's many that believe they're the worst choice possible. I was looking at a website specializing in eBike conversions. They made the claim that Walmart style bikes are actually good candidates, because they're usually heavier, and therefore stronger. They recommended not using more expensive lighter weight bikes, because their frames are made of thinner metal. I tend to agree with that assessment as long as it's understood that almost everything besides the frame will probably have to be replaced.