RCU Forums - YS61 ST-2...tuning issue?

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hheck

07-16-2003 04:54 PM

YS61 ST-2...tuning issue?

This heli engine has an unusual midrange issue
At the hover range it has a miss once every 2-3 seconds no matter how rich or lean I tune it in the midrange.
But throttle further up and it gets dead smooth no matter how lean or rich the high end needle is set.

Fuel: 20% Nitro, 20% synthetic oil it's a well known fuel brand and fuel is fresh

Plug: Enya 3 also tried a new OS 8 with the same symptoms.

Any idea ?

quist

07-17-2003 12:27 AM

YS61 ST-2...tuning issue?

What pipe/muffler?

hheck

07-19-2003 02:28 PM

YS61 ST-2...tuning issue?

The engine uses a Hatory SB-10 muffler.

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