Is there a secret to this? I used heat on the nut and a 4ft breaker bar. The bike starts to lift before the nut breaks loose. Do I need to use an impact driver?
If you haven't already, try moving your socket so you are pushing down instead of lifting. Try an extension and step on it.
How much heat? I have a 24V impact wrench arriving tomorrow. My air one is worn out. I tried heating with a propane torch, but was concerned it wasn't hot enough.