What are the basic settings for the YS-63FZs? I have run this engine a number of times, flown it once but I can not get it up to max RPM (wide open throttle). It stalls out and dies just above 8,000 to 8,700 RPM. It will run at 4,000 RPM consistently for long periods of time. But if one tries to accelerate, it will die. It will die at idle too. So I am thinking I need to start from scratch adjustment wise, from basic regulator setting, HSN setting and LSN settings. What are they. Currently the LSN is one and one eight turn out, regulator seems be below flush setting and the HSN is around 2 turns out, movement a quarter turn either way makes no difference, so I keep it rich. Nice smoke from muffler indicating oil is going throgh the engine.

When it stalls out, it is near if not detonating. When running around 4,000 RPM cyclinder head temperature is around 140 degrees, hotter in some places but nothing exceeds 160 degrees F including the muffler. I note even the intake manifold is hot (pre heating fuel and thus can lead to detonation), running around 130 degrees F temperature. On initial run there was a leak on the split line with carb, tighten that up, no more leak. Checked the valves and they were a little loose but not above the max, reset them to 0.04MM (cold).

Running a OS Type F glow plug, and Power Master 20/20 fuel. Using a 12 X 6 Master Airscrew Prop.

Anybody's thoughts?????

Cheers,

Chip