Phlorida
New Member
- Sep 15, 2010
- 867
- Boat Info
- 1995 250 Sundancer
- Engines
- 5.7L Mercruiser w/Bravo II
The wind finally died down and I got to try out my winter upgrades today. Here are the early comments.
4 blade propeller - I replaced a PowerTech SS 17.25 x 23p 3-blade propeller with a Hill Marine SS 18.25 x 22p 4-blade propeller. This is an awesome upgrade that I am really impressed with. The first thing that it is noticeable is the decrease in vibration compared to the 3-blade; this was even evident even at no wake speeds. The hole shot is much different and I can put the boat on plane at much lower RPM's than before. The cruise speed to get 2.2 mpg at 25 knots dropped from 3900 RPM to 3650 RPM. I get 4750 RPM at WOT and the top end speed dropped about 1.5 knots.
Bennett Automatic Tab Control - The 250DA has always seemed sensitive to weight shifts and I find myself adjusting the tabs quite a bit. The ATC virtually eliminates that at cruising speed. The install is very easy and using the keypad is intuitive.
4 blade propeller - I replaced a PowerTech SS 17.25 x 23p 3-blade propeller with a Hill Marine SS 18.25 x 22p 4-blade propeller. This is an awesome upgrade that I am really impressed with. The first thing that it is noticeable is the decrease in vibration compared to the 3-blade; this was even evident even at no wake speeds. The hole shot is much different and I can put the boat on plane at much lower RPM's than before. The cruise speed to get 2.2 mpg at 25 knots dropped from 3900 RPM to 3650 RPM. I get 4750 RPM at WOT and the top end speed dropped about 1.5 knots.
Bennett Automatic Tab Control - The 250DA has always seemed sensitive to weight shifts and I find myself adjusting the tabs quite a bit. The ATC virtually eliminates that at cruising speed. The install is very easy and using the keypad is intuitive.
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