So much of the time these arguments go on without much factual information. It is nice to see to people(Kris and Diablo) have a good discussion about the differences with these two engines. I have learned a wealth of knowledge from both of you. I own both zdz and 3w engines. The are both wonderful powerplants. Mike Dooley at rcshowcase is wonderful along with Andrea his secretary. Gerhardt at Aircraft International is fantastic. I have purchased engines from both of these reputable dealers. They have both provided me with ample information about their engines. I just recently bought a 33%Staudacher which I am putting a 3w 100b2 on. I will try the new zdz 100 on something. I am back ordered on it. It's funny now how you buy the engine before the plane. There is something really wrong with that statement.

Anyway, I am just a supporter of a nice intelligent discussion between knowledgeable RC'ers.

Barts