Testing props for Stinger 260 - what do you use?
 

Just wondering what props / pitch etc people are using. Using mercury's prop program to try and get best fit. So far I've tried Bravo 22 pitch 4 blade - cavitates a little bit when getting out of hole 3500 rpm at 40 mph, 5084rpm at max 57 mph. The new Enertia Eco 23 pitch - cavitates a lot causing overreving engines / almost unable to get onto plane but once up goes fine 3200rpm at 40mph, 4000rpm at 50mph, 4354rpm at 59mph - these props are obviously too high pitch. Rev 4 19 pitch (my old props), no cavitation and 4050rpm at 40mph, 5200rpm at 54mph - so assuming pitch is too low.

Engines/Drives are new Bravo 1 300hp x 2, max revs around 5200.

I'm thinking to try Enertia Eco 21 and Rev 4 21. But has anybody got any other suggestions? One thing I'm surprised about is the props cavitating if the pitch is too high? - is this usual? Drives are full way down at this point...

Hey I have a 86 stinger 260 with 300+hp mercruiser tempest smallblocks with alphas that break the surface with higher x dimension nearly 2inches higher then other stingers I've seen. I run 23p mirage plus props. I have some troubles getting out of the hole with cavitation. 40mph @3000rpm and seen 63mph @ 4800rpm top end. I also have 21p mirage plus props loose some cruise speed around 35mph @3000rpm holeshot is still the same with cavitation. Top speed about the same maybe 2-3mph faster. But spinning 5500rpm. Have 23p cleavers hole shot is terrible some time takes a couple tries to get hooked up and going. Can't remember rpms and speed. But do think I had my best top end with the cleavers in a good chop on the lake. Speeds are recorded with handheld GPS and factory tachs.

Any porpoising with shorties?