Vintage Irvine 40, and "Pop Goes The Weasel"!

This is the Irvine 40, a vintage (1980-1990's) British made nitro engine that John gave me on the Goldberg Falcon 40. It hasn't been run in ages, but started on the first try! Adjusted the high, and then had to adjust the low needles. There is a mechanical issue I will need to adjust later: the barrel on the carb doesn't close all the way, so I can't lower the idle and I have to choke the engine to stop it. But wow, as advertised, this motor runs so beautifully! This is my first nitro and first exhaust pressured carb, 

This was a interesting... I installed a fresh OS8 glow plug. On the second run I heard a pop and the engine quit. Turns out it failed! The top popped off and the base remained attached to the engine. This was a top shelf glow plug by OS. Fortunately had some N3 plugs and replaced it.

The top that popped off.

The base still attached to the engine 

I learned what happens when you fill the tank and fuel spills into the muffler and the carb floods.... Once I stopped filling to the top of the tank it's not a problem.

I am liking nitro. Simple no electronic ignition, seems to just run sweet.

Tomorrow weather conditions are expected to be awesome, so after an appointment I plan on flying the Alpha Sport 450, as many times as I can, then, gulp, I want to maiden the Ultrastick 10cc!