Mix Probs with OS-50 hyper and Jason Kraus (?) pipe...

[blue_collar2]

Running 30% magnum heli fuel, in a caliber 5.

Where is your needle set?

If the needle is below 2 1/2 turns out, it will hover for about a minute then abruptly die. At 2 1/2 turns, it hovers OK with tons of smoke and my driveway is full of little oil/fuel droplets. Seems like this is too rich. It was running fine with the stock (Kyosho) muffler before the "upgrade". Then the needle was at 1 1/4 turns out. Have others had to richen the needle with this pipe?

Any advice much app :arggg: reciated.

[mudbogger2]

What headspeed are you running? What glow plug are you using? Where is the low end set at?

[SteveL]

An abrubt shut off usually means the engine is rich. If they are lean they will ussually give you a warning.
Replace the glow plug and go back to 1 3/8 and give it a try.
I actually had to lean mine for the same condition when I went from the zimmerman to the Hatori.

[blue_collar2]

Thanks for the suggestions. I'm running at 1600 headspeed, which I think is 16,000 rpm for the engine. The low end is untouched from the factory, and I get the same results with new OS #8's and ENYA #3's. I've been "inching" it down a few clicks each flight, and I'm down to about 2 turns out, which is leaner than when it used to die. Very strange.