sundaypaper
Cadet
- Joined
- Jul 30, 2009
- Messages
- 8
Hi Boaters,
This has been going on since I bought my boat in 2012. Switch to a 4 blade prop and performance got better but it still happens.With the trim fully down, I can hit full throttle from a stop and it hangs in there as long as I don't turn coming out of the hole. At higher speeds, 4000+ rpm, it seems reasonable. Think about taking the kids tubing, this is the situation where it can show up, the rpm go up, boat is slowing down, I hear the engine revving up but it normally won't reach redline, part of that is me pulling back, but it doesn't "shoot up" fast. I'm not hearing popping sounds and I have confirmed the prop is in the water. It acts like my motor is spinning its tires. Typical loading is 2-4 people, 30 gals of fuel. Just an opinion, this Mercury outboard has big torque. I think the prop is too small in diameter.
Props:
Solas Amita Rubics 4 blade, 19 pitch x 14.25
stock black diamond 3 blade, 19 pitch x 14.75
top speed for both props (fresh water) is about the same, 5900-6000 rpms, 50-51 mph, fully trimmed out, clean bottom, full tank, 1 person, think first spring run on a calm lake
2012 Mercury 150hp FourStroke, inline 4 cylinder, 3 liter, fuel injected, EFI
2012 Starcraft 19ft deck boat (tri-hull), 2750 lbs with outboard + people and gear
Thanks for your help,
Neil
This has been going on since I bought my boat in 2012. Switch to a 4 blade prop and performance got better but it still happens.With the trim fully down, I can hit full throttle from a stop and it hangs in there as long as I don't turn coming out of the hole. At higher speeds, 4000+ rpm, it seems reasonable. Think about taking the kids tubing, this is the situation where it can show up, the rpm go up, boat is slowing down, I hear the engine revving up but it normally won't reach redline, part of that is me pulling back, but it doesn't "shoot up" fast. I'm not hearing popping sounds and I have confirmed the prop is in the water. It acts like my motor is spinning its tires. Typical loading is 2-4 people, 30 gals of fuel. Just an opinion, this Mercury outboard has big torque. I think the prop is too small in diameter.
Props:
Solas Amita Rubics 4 blade, 19 pitch x 14.25
stock black diamond 3 blade, 19 pitch x 14.75
top speed for both props (fresh water) is about the same, 5900-6000 rpms, 50-51 mph, fully trimmed out, clean bottom, full tank, 1 person, think first spring run on a calm lake
2012 Mercury 150hp FourStroke, inline 4 cylinder, 3 liter, fuel injected, EFI
2012 Starcraft 19ft deck boat (tri-hull), 2750 lbs with outboard + people and gear
Thanks for your help,
Neil