1997 fountain 38 with 22% prop slip
07-23-2014 | 09:44 AM
#11
Registered
Joined: Jul 2007
Posts: 3,648
Likes: 32
From: Oneida Lake NY
I was thinking the same thing that the boat should run 10MPH faster. Drives have drive showers. I am not sure what you mean by check the haul for hook. I will do a google search to find out what that means haha!
We are rookies when it comes to boating....we are only capable of swapping motors because of our extensive drag racing back ground. If you want to talk small tire drag radial racing I wont sound so uneducated.
thanks for the help!
We are rookies when it comes to boating....we are only capable of swapping motors because of our extensive drag racing back ground. If you want to talk small tire drag radial racing I wont sound so uneducated.
thanks for the help!
Getting a straight bottom fountain down to 15 percent slip or less is very possible. I can tell you with the -2 short lowers you should be looking at 5 blade props to get that slip down. Slip is speed, but single digit slip can very hard on the drives as well. 22 percent is excessive.
IMO something is seriously off somewhere if you are truly making 750hp. The 38 fever straight bottom is not the most efficient hull made, but 750hp a side is a lot of ponies.
Example. I spin my 32 4 blades at 5750 summer and right to 5850 rev limit (and would go more) in the cool, 14.5 slip, 98-100 mph, around 700 crank HP. Standard length lowers on a twin big step 38 lightning side by side.
07-23-2014 | 10:12 AM
#12
Thread Starter
Registered
Joined: Jul 2010
Posts: 25
Likes: 0
From: Osage Beach, MO
What they are asking you to check for is large depressions in the bottom of the hull, usually not native to a performance boat....they are cause by using a trailer with bunks that fall short of the transom. Check the bottom with a straight edge, the depressions will disturb the water making it hard to hook up at higher speed. Also they are asking you to check for water pickups that could also be disturbing the water, also causing slip.
Getting a straight bottom fountain down to 15 percent slip or less is very possible. I can tell you with the -2 short lowers you should be looking at 5 blade props to get that slip down. Slip is speed, but single digit slip can very hard on the drives as well. 22 percent is excessive.
IMO something is seriously off somewhere if you are truly making 750hp. The 38 fever straight bottom is not the most efficient hull made, but 750hp a side is a lot of ponies.
Example. I spin my 32 4 blades at 5750 summer and right to 5850 rev limit (and would go more) in the cool, 14.5 slip, 98-100 mph, around 700 crank HP. Standard length lowers on a twin big step 38 lightning side by side.
Getting a straight bottom fountain down to 15 percent slip or less is very possible. I can tell you with the -2 short lowers you should be looking at 5 blade props to get that slip down. Slip is speed, but single digit slip can very hard on the drives as well. 22 percent is excessive.
IMO something is seriously off somewhere if you are truly making 750hp. The 38 fever straight bottom is not the most efficient hull made, but 750hp a side is a lot of ponies.
Example. I spin my 32 4 blades at 5750 summer and right to 5850 rev limit (and would go more) in the cool, 14.5 slip, 98-100 mph, around 700 crank HP. Standard length lowers on a twin big step 38 lightning side by side.
I will do some checking tonight and get back. I really appreciate the help.
07-23-2014 | 10:32 AM
#13
Registered
Joined: Dec 2001
Posts: 3,922
Likes: 393
From: Indianapolis, Lake Cumberland
What they are asking you to check for is large depressions in the bottom of the hull, usually not native to a performance boat....they are cause by using a trailer with bunks that fall short of the transom. Check the bottom with a straight edge, the depressions will disturb the water making it hard to hook up at higher speed. Also they are asking you to check for water pickups that could also be disturbing the water, also causing slip.
Getting a straight bottom fountain down to 15 percent slip or less is very possible. I can tell you with the -2 short lowers you should be looking at 5 blade props to get that slip down. Slip is speed, but single digit slip can very hard on the drives as well. 22 percent is excessive.
IMO something is seriously off somewhere if you are truly making 750hp. The 38 fever straight bottom is not the most efficient hull made, but 750hp a side is a lot of ponies.
Example. I spin my 32 4 blades at 5750 summer and right to 5850 rev limit (and would go more) in the cool, 14.5 slip, 98-100 mph, around 700 crank HP. Standard length lowers on a twin big step 38 lightning side by side.
Getting a straight bottom fountain down to 15 percent slip or less is very possible. I can tell you with the -2 short lowers you should be looking at 5 blade props to get that slip down. Slip is speed, but single digit slip can very hard on the drives as well. 22 percent is excessive.
IMO something is seriously off somewhere if you are truly making 750hp. The 38 fever straight bottom is not the most efficient hull made, but 750hp a side is a lot of ponies.
Example. I spin my 32 4 blades at 5750 summer and right to 5850 rev limit (and would go more) in the cool, 14.5 slip, 98-100 mph, around 700 crank HP. Standard length lowers on a twin big step 38 lightning side by side.
07-23-2014 | 10:53 AM
#14
Registered
Joined: Aug 2012
Posts: 2,301
Likes: 405
From: Collierville, TN and Pickwick Lake
I was thinking the same thing that the boat should run 10MPH faster. Drives have drive showers. I am not sure what you mean by check the haul for hook. I will do a google search to find out what that means haha!
We are rookies when it comes to boating....we are only capable of swapping motors because of our extensive drag racing back ground. If you want to talk small tire drag radial racing I wont sound so uneducated.
thanks for the help!
We are rookies when it comes to boating....we are only capable of swapping motors because of our extensive drag racing back ground. If you want to talk small tire drag radial racing I wont sound so uneducated.
thanks for the help!
07-23-2014 | 11:00 AM
#15
Thread Starter
Registered
Joined: Jul 2010
Posts: 25
Likes: 0
From: Osage Beach, MO
Ask away because I'm hoping we have something stupid going on.
07-23-2014 | 11:03 AM
#16
Thread Starter
Registered
Joined: Jul 2010
Posts: 25
Likes: 0
From: Osage Beach, MO
What they are asking you to check for is large depressions in the bottom of the hull, usually not native to a performance boat....they are cause by using a trailer with bunks that fall short of the transom. Check the bottom with a straight edge, the depressions will disturb the water making it hard to hook up at higher speed. Also they are asking you to check for water pickups that could also be disturbing the water, also causing slip.
Getting a straight bottom fountain down to 15 percent slip or less is very possible. I can tell you with the -2 short lowers you should be looking at 5 blade props to get that slip down. Slip is speed, but single digit slip can very hard on the drives as well. 22 percent is excessive.
IMO something is seriously off somewhere if you are truly making 750hp. The 38 fever straight bottom is not the most efficient hull made, but 750hp a side is a lot of ponies.
Example. I spin my 32 4 blades at 5750 summer and right to 5850 rev limit (and would go more) in the cool, 14.5 slip, 98-100 mph, around 700 crank HP. Standard length lowers on a twin big step 38 lightning side by side.
Getting a straight bottom fountain down to 15 percent slip or less is very possible. I can tell you with the -2 short lowers you should be looking at 5 blade props to get that slip down. Slip is speed, but single digit slip can very hard on the drives as well. 22 percent is excessive.
IMO something is seriously off somewhere if you are truly making 750hp. The 38 fever straight bottom is not the most efficient hull made, but 750hp a side is a lot of ponies.
Example. I spin my 32 4 blades at 5750 summer and right to 5850 rev limit (and would go more) in the cool, 14.5 slip, 98-100 mph, around 700 crank HP. Standard length lowers on a twin big step 38 lightning side by side.
Water pick ups are about 6inches either side of drain plug. Stick down even with bottom of boat
07-23-2014 | 12:42 PM
#18
Registered User
Joined: Apr 2007
Posts: 1,474
Likes: 0
From: prince george,va
07-23-2014 | 01:23 PM
#20
Registered
Joined: Aug 2012
Posts: 2,301
Likes: 405
From: Collierville, TN and Pickwick Lake
What about your tabs? Were they up or at least neutral?
