Need help

[Rnorton]

Need some help just put 19p tempest plus prop on my boat it’s a Crestliner pt18 with 150 mercury. Now spinning 5700-5800 rpms but never gained and speed still running 48-49. Which is what I was running with a 21p solas lexor prop but only gettin 5200-5300 rpms

[PolarKraft195]

Pitching down will do that sometimes. You will gain rpms, but not necessarily speed. Using 2 different makes/models of prop adds to that.

[tcesni]

Your hole shot should be better, is it?

[T-Mac]

Holeshot should have improved ..and now the engine is running closer to the rpms it is supposed to....which is better for the equipment.

[Casslaw]

Have you compared your numbers with the Mercury performance bulletin for your rig? Tin rigs can react odd to a prop change but as has been said, your holeshot should have improved and your RPMs are in the right area now. Motor height maybe?

[Rnorton]

yeah hole shot is better even handles better now. i got jack plate and have messed with that no changes. glad rpms are where they need to be now just wish i could get the performace some of the guys on here are gettin out of the same rig i got