I built this late 70s allpro a few summers ago and it proceeded to flip over if you pedaled too hard. I eventually tore it apart to steal the banana seat and sissy bar for my mbbo bike. Me and @Tyler Renner have been buying alot of cheap bikes because it's that time of year so I'm going to build this thing again. the last photo is the current state of the bike. It was fun but 220+ lb guys aren't a good fit on a bike this small. So my kids will get the finished product this time around in a much different style.