Hi All,
I was out tinkering some with my DA 100 today just seeing what would happen. I'm one of those people that like to play with things a little to see what effect they have and alot of times I stumble on things that work better doing that. With aerobatic planes I've found that tinkering with things can really improve performance and the way the airplane flies.

Anyhow, what I did today was loosen the timing sensor and advance it all the way and run it a little to see what the effect was, and then I retarded it all the way to see what the effect was. It didn't change much, but with it retarded all the way, the engine seemed much happier. It took the throttle a *little* better. I say a *little* because the DA engines are known for great throttle transition and it was fine before...it's just it seems to be a little better now with it retarded. It also seemed to have more pull and run stronger even though the rpms were the same on the top end. I also noticed that it idles lower and smoother...it idles so slow you can count blades now...I mean ***really*** low. It will hold that idle and take the throttle too even after idling it for extended periods which normally would not be done. Can anyone explain to me why this is so? I'm not sure I understand why on a 2 stroke engine. I assume that it's because it is firing later thus it is firing at a higher compression and is also allowing more fuel air mixture to be compressed more which causes more power. Is this so? Or is my thinking not quite right? I would appreciate hearing from anyone who understands this as I'm not sure my thinking is right on this.