1995 22' Scarab 260MERC Planing Issues? Trim tabs?
#21
Registered
Join Date: Apr 2009
Location: Denmark and hopefully some place nice
Posts: 1,852
Likes: 0
Received 1 Like
on
1 Post
Here is a quick explanation of prop slip. http://www.brianrogers.net/boatpropslip.doc
The other thing I mentioned was simply the gear ratio of the drive. Usually your engine package came with the 1:1.47 gear ratio, but the 1:1.62 ratio is pretty common as well. Should be written on the left decal on the upper part of your drive.
#22
Registered
Thread Starter
Join Date: Mar 2011
Location: Phoenix, AZ
Posts: 28
Likes: 0
Received 0 Likes
on
0 Posts
Sorry. Not trying to be.
Here is a quick explanation of prop slip. http://www.brianrogers.net/boatpropslip.doc
The other thing I mentioned was simply the gear ratio of the drive. Usually your engine package came with the 1:1.47 gear ratio, but the 1:1.62 ratio is pretty common as well. Should be written on the left decal on the upper part of your drive.
Here is a quick explanation of prop slip. http://www.brianrogers.net/boatpropslip.doc
The other thing I mentioned was simply the gear ratio of the drive. Usually your engine package came with the 1:1.47 gear ratio, but the 1:1.62 ratio is pretty common as well. Should be written on the left decal on the upper part of your drive.
#23
Registered
Join Date: May 2006
Location: Jackson, Mississippi
Posts: 448
Likes: 0
Received 0 Likes
on
0 Posts
1997 scarab 22 with 300hp 7.4 25 mirage plus prop 63 mph with 2 people and fuel. Put five people in boat and barely get up on plane. Fast boat hull, slowest on speed plane was about 22-23 mph. Hard to keep on plane with a skier behind or pop a skier up on plane. Looking back, wish I would have added tabs.
#25
Registered
Thread Starter
Join Date: Mar 2011
Location: Phoenix, AZ
Posts: 28
Likes: 0
Received 0 Likes
on
0 Posts
1997 scarab 22 with 300hp 7.4 25 mirage plus prop 63 mph with 2 people and fuel. Put five people in boat and barely get up on plane. Fast boat hull, slowest on speed plane was about 22-23 mph. Hard to keep on plane with a skier behind or pop a skier up on plane. Looking back, wish I would have added tabs.
#26
Registered
Join Date: Mar 2011
Posts: 5
Likes: 0
Received 0 Likes
on
0 Posts
I have the same boat with the 7.4 and the 23P 3 blade Same problem, 2-3 people on bard and all is great but when I get more than that it is a dog to get on plane. I hope to go to a 4 blade to help out.
I don't want to hijack your thread, but how is your windshield done? Is it painted or gone Great looking boat.
I don't want to hijack your thread, but how is your windshield done? Is it painted or gone Great looking boat.
#27
Registered
Thread Starter
Join Date: Mar 2011
Location: Phoenix, AZ
Posts: 28
Likes: 0
Received 0 Likes
on
0 Posts
I have the same boat with the 7.4 and the 23P 3 blade Same problem, 2-3 people on bard and all is great but when I get more than that it is a dog to get on plane. I hope to go to a 4 blade to help out.
I don't want to hijack your thread, but how is your windshield done? Is it painted or gone Great looking boat.
I don't want to hijack your thread, but how is your windshield done? Is it painted or gone Great looking boat.
Curious... What are your speeds with the 454? Are you running a Alpha or Bravo Drive? After getting on here and chatting with people, I have decided to do the following:
#1 - Trim Tabs
#2 - Prop
#3 - Interior Upohstery (wasn't discussed, but adding it in here)
#4 - In a year or two.... 350 with forged internals with twin turbos running 5-6psi boost and run the Alpha Drive easy til it pukes and then get a Bravo 1 drive.
We shall see what really happens.
I need to get rid of my turbo sandrail before I do anything major.
#28
Registered
Join Date: Dec 2006
Location: morton, il
Posts: 180
Likes: 0
Received 0 Likes
on
0 Posts
Sounds like you're on the right track. You're not going to believe the difference the tabs make. Reality of that size boat is even minor changes in weight makes a big difference........that was like a Mr Obvious thing. Seriously though, make one change at a time so you can document the results.
#29
Registered
1997 scarab 22 with 300hp 7.4 25 mirage plus prop 63 mph with 2 people and fuel. Put five people in boat and barely get up on plane. Fast boat hull, slowest on speed plane was about 22-23 mph. Hard to keep on plane with a skier behind or pop a skier up on plane. Looking back, wish I would have added tabs.
#30
Registered
Join Date: Mar 2011
Posts: 5
Likes: 0
Received 0 Likes
on
0 Posts
I get low 60s on the GPS. I love the boat, it is the perfect size for the lakes I run in and will hang with some of the bigger boats, plus the 454 with open pipes (silent choice) gets lots of attention . I am very happy with mine, it is my first boat like this. I want to do single hydro steering and planes, but I have some other issues to fix first. Like you, my upholstery is out right now getting a once over. I plan to upgrade some components, carb, intake, cam, exhaust to get a little more out of it, but I don't want to sacrifice low end, reliability or economy (with a snicker) in the process.