ORIGINAL: CGRetired
I had all sorts of issues with the Evo series. I had a .46, a 61, and a 100 NX. The .46 ran well at first, but it too began to eat plugs, then it would not run more than a few minutes and would dead-stick on me. No one could figure out what was wrong with it. I eventually sold them all.
However, one key thing that I learned about them was that they really needed the correct mixture at both ends (high speed and idle) to run right. To lean, and they would burn up plugs. To rich and the engines would not run worth a darn. It takes time and patients, and determination because you are working at both ends.. mixture AND glow plug issues.
CGr
I hate to hear you unloaded your Evo's.... You are right though. They are rather picky about the tuning, but once I learned the engine, I become a huge Evo fan instantly!
We don't have alot of details, but my guesses are:
You're running too much current into the plug from your glow driver
You're running too rich and fouling the plug
You're running too lean and overheating / burning the plug
You should be getting a season out of the plug. Do some reading on RCU for tuning the motor. Especially using the "pinch" method on the low end. Tune the low end first, then the high end. Play with it until you learn. It took me about six months to nail it down. Not sure what that's saying for me though.
A buddy at the field has a .46 Evo that runs smooth as glass. He uses an A3 plug and 15% Cool Power.
I run a Evo .61NT that'll sit and idle for minutes on the flight line, gas it and purr all the way up. I use a H9 Super plug and 15% Omega
Both have rediculous power for their size.
If you haven't noticed, I'm an Evo fan
