Hi I have a 1972 flh Electra Glide Shovelhead and after about 10-20 mins. of running just sitting in my driveway she just stalls with a little back fire anyone have an idea of what is causing this to happen.

 

Yea...In 20 or so minutes it's hot as a half ****ed Fox and gives up on ya ever riding?
Maybe

 

It's an air cooled motor you probably overheated it.