Originally Posted by
Volo
My propeller is 16 x 8. I bought my engine from China with a Walbro and the new ignition system taking 8 volts with 2 LiPo in series. I opened the high speed set screw by 3/8 turn and the engine is running well on the full carb travel, except I do not gain speed from 3/4 to full stick. Thanks all for your generous informations!
You sound normal now. As stated before, very little change above 3/4 throttle is normal ..... for the DLE engine and any other kind of engine that uses a butterfly throttle valve. Just the nature of the beast. Enjoy the engine. The 20 is one of my favorites.