Upcoming 30 size four stroke comparison

I am waiting for the final engine to arrive before beginning this in earnest. I will be conducting a 30 size 4 stroke engine shoot out. Basically comparing RPM figures with various props and various fuels. The engines to be included are: Saito FA-30S Magnum XL30RFS OS FS-30S OS FS-26 Surpass This request was originally an idea from a YouTube subscriber in Germany who is trying to decide on a power plant for his WWI Air Combat airframe. he is building a Nieuport 28. Following the rules in the attached document. It sounds like a really cool competition. I already have the 26 Surpass and the Magnum XL30, but the Saito FA-30S just arrived today. I immediately began the break in of this engine in preparation for the shoot out. The OS FS-30 should arrive on Monday. Since I cannot enter a table here I just made a screen shot of the test matrix. Basically I plan on running each engine using at minimum a 10x4 prop, as dictated by the WWI combat rules, and probably a few others for Min/Max RPM. I will run this test on several different fuels as well focusing on the FAI as that is easily available in Germany. Omega 10% Omega 5% Omega Control Line 10% Omega FAI 0% In preparation for the shoot out I tested out a multiple tachometer setup today too. I have been less than impressed with the GloBee tach I have been using lately. The Tower Hobbies one I have is equally crappy. I have since ordered a Hobby King unit and hope it performs a bit better. That little Saito is one sweet engine for sure!