600/OS55 Cutting Inverted

[waveydavey]

As the title suggests, anyone any ideas why the engine would cut whilst inverted. It's done it 3 times now, once it coughed and I got it back upright and the engine kicked in, the next 2 times were both inverted and cut, back upright and got it down. I've changed the clunks and I've checked the fuel lines/swopped them, checked the tank for leaks. There are none. The 3rd time I was pushing out of an inverted pass down the flightline into an outside loop and it cut as I started pushing up, the 2nd was inverted towards me, rolled out and auto'd it.

Not sure what to try next.

[squeaky pete]

hav u got a header tank?? silly question i know, did u check the lines in there? also cld be tuning???

[millerman]

Is it leaning out or flooding when inverted prior to cuting out ?


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[chris jones2.4]

what bout the pressure pipe to the exhaust, you checked that?

[squeaky pete]

what bout the pressure pipe to the exhaust, you checked that?

beat me to it

[chris jones2.4]

i read your mind squeaky

[squeaky pete]

please dont, u dont know what your find in there lol

[brin]

check for a small split in the clunk line?

[squeaky pete]

or...... u could try refueling instead of running the tank dry

[chris jones2.4]

please dont, u dont know what your find in there lol

there wasnt alot actually, there was a little speech box saying, "mmmmm! Vision"

[Nick B]

Have you held the heli upside down and checked what the clunk does?

Is it random anytime during a tank?

[waveydavey]

Is it leaning out or flooding when inverted prior to cuting out ?


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Leaned out just prior to cutting

[waveydavey]

what bout the pressure pipe to the exhaust, you checked that?

It seems to be fine, I'll replace it anyway. I'm running the same combo as Pete with the highflow pipe, have you had any odd misfires so to speak Pete

[waveydavey]

or...... u could try refueling instead of running the tank dry

Now thats my normal trick since fitting the Beast I don't even notice the cold.

[chris jones2.4]

i have seen a problem with the 600 before where the fuel gets down to the top of the rubber on the clunk grommet and it misfires