Not afraid profile owner
10-02-2007, 10:16 AM
#32
Registered
Join Date: Jan 2004
Posts: 2
Likes: 0
Received 0 Likes
on
0 Posts
I ordered a 299 mid cabin in 2004 525hp xr drive and had to run the port tab way down to keep the boat up right,talked to randy sent the boat back to dealer they never did get it right,and by the wat RANDY said the boat would run in the low 80s it never saw 70 on the GPS dont belive them.....
10-02-2007, 10:55 AM
#33
Registered
Join Date: Jan 2007
Location: SW Ohio
Posts: 272
Likes: 0
Received 0 Likes
on
0 Posts
There was a thread I think in the Fountain or prop forum on the same subject. I think it was with regards to some of the smaller single engine fountains running LH rotation on the props to counter-act engine torque. If a strake was built up to compensate and right the boat w/o using trim tabs, it would definitely scrub off speed. LH prop would be a better option if available.
12-27-2007, 04:17 PM
#34
Registered
Join Date: Nov 2005
Location: Olympia, WA
Posts: 6
Likes: 0
Received 0 Likes
on
0 Posts
I have played with this a little... I think it all depends on drive gears, prop, horse power, and fat people vs skinny people . I own a 27' Profile. When I bought the boat it had a 502 with a B&M 250 spinning 1.36 gears and no prop. I borrowed a 26p Bravo 1 and took a mile long runway to get up on plane, once on plane the boat reached 76 mph on GPS easy with only a little bit of chine walk and no lean. I then purchased a 1.5 Bravo out drive with a labbed 28p left hand prop to see if I could cure the chine walk at 76 mph but the boat leaned to the starboard side at 50mph. I then switched back to a 28p right hand prop and the boat ran again an easy 75 78 mph but had chine walk. I do not run tabs at all on this hull. The previous owner had mounted the dual batteries over in the far starboard side of the motor compartment. I have moved them back to under the rear seat on the port side. the boat sits more level on the water at the dock now but has not changed the chine walk. The 27 Profile has a notched transom. So far with my set up the only time the boat leans is if I let fat people aboard or I pack up the ice chest to full..
The hull does take a lot of positive trim to get air under them and they definitely don"t like flat water. I have ridden in boats over 30' that don't ride as nice as my Profile.
The hull does take a lot of positive trim to get air under them and they definitely don"t like flat water. I have ridden in boats over 30' that don't ride as nice as my Profile.
01-28-2008, 06:35 AM
#35
Registered
I have a 94 Profile and am seeing the same problem of trying to get bow lift. Running a blown 540, dyno 800hp (ATECO). Talked to Randy about the boat running uneven, port side low. I have to keep the trim tab down about 2" to keep the boat level. He said to run the lower unit lefthanded. Called and talked to Max Machine and they did not recomend reversing the rotation, therefor at a loss of what to do. Anyone have this problem
03-27-2009, 12:30 PM
#39
Registered
Join Date: Jul 2005
Location: kirkland wa
Posts: 32
Likes: 0
Received 0 Likes
on
0 Posts
for paradigm shift , I ran 798hp at 84-86 gps on flat water I had a prop done we extended the blade s 1/4 " now I get the bow out of the water but no extra speed ,it will run 84 through about any thing ,
