RE: Bob Cat Copy Falcon 120 Jet
During a start sequence recently, my ECU saw the accu voltage drop below a set level, (rpm was around 6,000 rpm and EGT rising, so the ECU aborted the start sequence. There must have been a small pooling of fuel in the chamber, so the flame continued to burn as the engine was running down. The ECU obviously didnt want to re-engage the starter motor, until the rpm was down to about 1000 rpm for a cool down cycle, so what to do, just wait? Give it a blast with my industrial fire extinguisher?
I was going to make up a seperate starter motor and wand assembly to engage on the side of the spinner to turn the engine over to blow out any residual flame and help cool the engine, should this happen again. Too complex and another battery to carry around.
Well had a thought and went to my local cycle shop, bought a tyre inflator, with precise trigger operation. These devises are good for inflating cycle, motor bike or car tyres with CO2 disposable cyclinders. Cost was 14 pounds.
Gave it a test today, had the same thing happen at around 6000 rpm, (bit cold here tonight), gave the intake a 1/2 second blip on the trigger, flame extinguished immediatly. This tool is easy to use, has a safety lock on the trigger and can take threded or non threaded CO2 cylinders, and more convenient to use than the large industrial bottles. I bought a set of adaptors, for footballs and different types of valves, for Â£3.50 and used the plastic adaptor (orange nozzel). Might be usefull in your field box.