LipschitzWrath
Cadet
- Joined
- May 31, 2016
- Messages
- 17
Took my new deck boat out this weekend for the first time. 2015 Tahoe 215 XI with 260hp 5.0 Mercury. Was VERY disappointed with the performance all around. With just my GF and I on the boat, probably took us 15-20 seconds to get up on plane. With 7 of us on the boat, probably somewhere between 30-60 seconds. On top of that, top end speed sucks, only getting about 40-42 MPH at 3900 RPM. Also worthy to mention this boat will spend the majority of its time on Flaming Gorge reservoir in southwest WY, elevation 6500'. Here are the details, according to the sticky:
1) Issue - Very slow to get on plane. Top speed also nowhere near advertised and RPM's seem very low for WOT.
2) Current prop - Mercury Black Max aluminum 3 blade, aluminum.
3) Current dia/pitch - 14.5 x 19
4) WOT RPM/Speed - 40-42 MPH @ 3900 RPM (4 people on boat)
5) Engine - 2015 Mercury 5.0 EFI 260hp; Drive - 2015 Mercury Alpha One 1.47 ratio
6) Boat - 2015 Tahoe 2015 XI, 21'6" long, I estimate the weight somewhere in the 2200-2300 lb range
I am not a top speed fanatic and don't mind giving up some top end. I want an awesome hole shot as this boat will spend a lot of its time pulling a wake/knee boarder or tube.
What is making this worse is that before we bought the boat, we read a boattest.com review and they said the boat got up on plane in 3.2 seconds and had a top speed around 51 MPH. I know the altitude has a negative effect, but we are NOWHERE NEAR those figures.
I called the boat dealer and he agrees the prop is wrong (then why did he put it on?), and is leaning towards something in the 16-17 range. I have been reading and am kinda leaning towards the HighFive propeller, but read somewhere that the 17 pitch model H5 is different construction and should be avoided?
Who can shed some light?
1) Issue - Very slow to get on plane. Top speed also nowhere near advertised and RPM's seem very low for WOT.
2) Current prop - Mercury Black Max aluminum 3 blade, aluminum.
3) Current dia/pitch - 14.5 x 19
4) WOT RPM/Speed - 40-42 MPH @ 3900 RPM (4 people on boat)
5) Engine - 2015 Mercury 5.0 EFI 260hp; Drive - 2015 Mercury Alpha One 1.47 ratio
6) Boat - 2015 Tahoe 2015 XI, 21'6" long, I estimate the weight somewhere in the 2200-2300 lb range
I am not a top speed fanatic and don't mind giving up some top end. I want an awesome hole shot as this boat will spend a lot of its time pulling a wake/knee boarder or tube.
What is making this worse is that before we bought the boat, we read a boattest.com review and they said the boat got up on plane in 3.2 seconds and had a top speed around 51 MPH. I know the altitude has a negative effect, but we are NOWHERE NEAR those figures.
I called the boat dealer and he agrees the prop is wrong (then why did he put it on?), and is leaning towards something in the 16-17 range. I have been reading and am kinda leaning towards the HighFive propeller, but read somewhere that the 17 pitch model H5 is different construction and should be avoided?
Who can shed some light?