Originally Posted by cooper_361 (Post 4216296)

I will try to post some pics soon, its a merc racing scorpion so it is 377 hp at crankshaft, i wont have alot of testing left since my boat is almost the only one still in the water over here in belgium.
the enertia props are by far the best i have tested but they only make them to 22p.
another problem i have is that all the other props are very hard on steering its a single ram full hydraulic system.
with the apollo i cant turn the steering wheel at all at full speed.

appollo 4 blade 22p: 55mph at 5350 rpm bad holeshot cruising a bit faster
Mirage plus 23: 55.5 at 4950 bad holeshot and cavitating on turns
Ballistic 22xl: 56 at 5100 acceptable holeshot and cruising but still hard on steering
Enertia 21: 57 at 5350 good holeshot and cruising and best topspeed but still 150 rpm over redline

strange thing is here my prop slip on the previous engine 6.2 mpi was 8 percent with a enertia 17p and now with the 21 it has 19 percent so thats a big difference.
i was told to try an powertech ofs3 23p so i will try that next i think
Cavitation plate is mounted 1.5 inch above the bottom of the hull