Hello All:

I attempted to fly one of my ST G20/.15D engines yesterday and I found that the compression adjustment was very critical! It was difficult to adjust the needle valve and compression to obtain a good setting.

I made no adjustments to the engine or fuel since the last time that the engine had been flown. What gives? I am running an 7x6 wooden prop. Perhaps I need to place a larger load on the engine?

Tia,

Frank McCune