Fastest, most energy efficient bike I've ridden at the park. The 73* HA was perfect for 24" wheels. I suspect it has to do with fork offset and trail but all I can say for sure is that I much prefer it over 74.5*. It feels similar to a 74* HA on the 22" wheels. I don't recommend these Alienation rims for heavy dudes, as they are a bit flexy. I'll probably switch to a Hazard rear rim soon.