Those props may work...You need to keep the RPM in the right range. About 8400-8800rpm is best for the 140's. Regardless of generation. The 140DZ is the direct injection engine and will be more powerful than the 140 Sport.

In a pattern application usually we tend to run 10 pitch to 12 pitch props. The models will groove better and have better energy through the manuevers. The flat pitch props like 6's and 8's are better suited to 3D type applications as they will be more stop and go....The models don't groove well on these props because as soon as you cut power the model stops like a parachute is dragging out the back...and as soon as you throttle up the model leaps. Result can be jerky throttling transitions and the flow of a sequence is tough to maintain.


In a pattern sequence the model is not stopping so there is not the need to have the wide range of speeds available and overall the 3D maneuvers get a slower speed range overall.

You will just have to play with prop sizes based on your fuel choice and you conditions...run the engines at 8400-8800 rpm and they will be happy. So larger diameters will require low pitch to maintain the load range.

Troy Newman
Team YS