PAW 149 in flight

My modified Brodak ’Jr. Lightning Streak’ powered by a PAW (single ball bearing) diesel. Fuel is Coopers (30% ether); prop is a 7x4 Tornado. I just put this back in service after a long storage period. I stopped after the vertical 8’s as I was not sure how much fuel I had remaining. On the last flight, I attempted the entire pattern and had to bail out of the hourglass when the engine sputtered.