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Old     (Laker1234)      Join Date: Mar 2010       07-27-2015, 3:16 PM Reply   
Anyone have any experience with the Bennett Trim Tab? Seems as though these would work as a wake enhancement. http://www.overtons.com/modperl/prod...view&from=grid
Old     (2500HD)      Join Date: Jul 2015       07-28-2015, 6:53 PM Reply   
They would work but i would go with an electric tab like a lenco or the bennet bolt.
Old     (boardjnky4)      Join Date: Dec 2011       07-28-2015, 7:25 PM Reply   
They don't work well because of 2 things.

1. The mount angle is fixed which limits your flexibility on optimizing the amount that the tab is able to move.

2. They are not "long throw" actuators so your losing even more movement.

The long throw Lenco actuators are used for good reason and they are mounted at an aggressive angle to give the largest range of motion possible.
Old     (2500HD)      Join Date: Jul 2015       07-29-2015, 5:45 AM Reply   
you don't need to use long throw but they would give a better range of motion.
Old     (boardjnky4)      Join Date: Dec 2011       07-29-2015, 6:34 AM Reply   
Many people have ventured down this path and realized that without a LARGE range of motion, "surf tabs" are a waste of money.

Look at the picture in the banner of this page, http://www.wakemakers.com/wavecontro...FdMWHwodT7gMww

Lenco actuators mounted VERY close to the pivot point of the tab to provide optimal range of motion for the tab.

I actually previously bought a Bennett setup to put a surfgate on my old centurion. When I did the math on the triangle, I realized the fixed mounting angle limited my ability to mount the actuator in the correct spot to extend and retract the gate far enough to make it work. The same concept holds true for surf tabs. They need to deploy pretty far in order to work.

Last edited by boardjnky4; 07-29-2015 at 6:39 AM.
Old     (2500HD)      Join Date: Jul 2015       07-29-2015, 9:07 AM Reply   
Granted everyboats hull will react differently but this is my boat with standard 2 1/4 inch lenco actuators. It works great
Attached Images
   
Old     (boardjnky4)      Join Date: Dec 2011       07-29-2015, 9:44 AM Reply   
It would probably work even better with a longer tab and with the lenco mounted lower. I commend you for putting that together but I don't like how the actuators are above the platform like that.

The wakemakers setup uses standard Lenco's too. I was surprised by that.
Old     (2500HD)      Join Date: Jul 2015       07-29-2015, 10:06 AM Reply   
Lots of people won't like seeing actuators but I love it. I'm a contractor by trade and anytime I see an actuator or hydraulic cylinder I know I don't have to lift something. I have thought about making a slightly larger tab but it works well the way it is and haven't had time to fab one up yet. I might just adjust the fins for now and get a little crab action.
Old     (Laker1234)      Join Date: Mar 2010       07-30-2015, 2:21 PM Reply   
Jeff, does the tab, since it cannot be raised above the waterline, effect the wake of the side you are surfing?
Old     (Aurex)      Join Date: Aug 2014       07-30-2015, 2:31 PM Reply   
Jeff, Do you have pictures of the resulting wake? I am in the process of designing a surf system for my boat and am curious to see the result.

FYI, I like the black ABS fresh air exhaust. $40 FTW!
Old     (2500HD)      Join Date: Jul 2015       07-30-2015, 7:35 PM Reply   
The tabs have no effect on the surfside when they are not deployed. I have them set 5/8 above bottom of hull and when retracted they are about 1 1/2 above bottom of hull. When deployed the trailing edge is 2 inches below hull. The fins are set straight for now, but i may adjust the starboard fins to help the port side wake.
Old     (2500HD)      Join Date: Jul 2015       07-30-2015, 7:40 PM Reply   
This is a quick video of the wake transfer. I have yet to be out with a load of people and no chop. The chop as always was killing the wake. This was 2 people in the boat and both 750's 3/4 full. Also since this video i reproped the boat with an acme 1615.
https://www.youtube.com/watch?v=s8yfkC56Qjg

Last edited by 2500HD; 07-30-2015 at 7:43 PM.
Old     (lashburn1)      Join Date: Oct 2014       07-30-2015, 9:10 PM Reply   
Quote:
Originally Posted by 2500HD View Post
This is a quick video of the wake transfer. I have yet to be out with a load of people and no chop. The chop as always was killing the wake. This was 2 people in the boat and both 750's 3/4 full. Also since this video i reproped the boat with an acme 1615.
https://www.youtube.com/watch?v=s8yfkC56Qjg
Cool....
A little bow weight or Speed (Re-Prop) might clean that up the last lil bit....
Old     (Laker1234)      Join Date: Mar 2010       07-31-2015, 5:12 AM Reply   
Was that a kit? And would I need to look at heavy duty, something like this? http://www.wholesalemarine.com/lenco...no-switch.html
Old     (2500HD)      Join Date: Jul 2015       07-31-2015, 10:18 AM Reply   
No kit, I just bought the actuators tabs and switch. Then fabricated some fins for the bottom. I think I have about 450 in the system.
Old     (Laker1234)      Join Date: Mar 2010       07-31-2015, 12:28 PM Reply   
Did you bolt the tab plates or are they screwed into the transom?
Old     (audionly101)      Join Date: Jan 2010       07-31-2015, 2:56 PM Reply   
Quote:
Originally Posted by Aurex View Post

FYI, I like the black ABS fresh air exhaust. $40 FTW!
How is the PVC holding up? Can we see some more pics of the exhaust system?
Old     (2500HD)      Join Date: Jul 2015       07-31-2015, 6:16 PM Reply   
Quote:
Originally Posted by Laker1234 View Post
Did you bolt the tab plates or are they screwed into the transom?
I screwed them to the transom per the manufacturers instructions.
Old     (2500HD)      Join Date: Jul 2015       07-31-2015, 6:24 PM Reply   
Quote:
Originally Posted by audionly101 View Post
How is the PVC holding up? Can we see some more pics of the exhaust system?
This is the second boat i have made this for and this boats second year with it on it. So far it works great. I don't have any more pics of it right now but i'll try to take some.
Old     (Aurex)      Join Date: Aug 2014       08-03-2015, 8:26 PM Reply   
The abs pipe will hold up fine.

I just did a stringer in my boat in the spring. The exhaust was most definitely a mix of abs pipe and fiberglass. The fiberglass was mostly for the fittings.

The thought never crossed my mind to use the abs for the fresh air exhaust. How easily did it bolt to the through hull fittings?
Old     (2500HD)      Join Date: Jul 2015       08-04-2015, 6:35 PM Reply   
No bolts, just hose clamps. All of the attachment is to the swimdeck.
Old     (Giddyup)      Join Date: Aug 2011       08-06-2015, 6:49 AM Reply   
Great job on the surf tabs, I just don't know if I'm ready to drill in to. My boat. Do you have any other pictures of the exhaust That's a great idea, what is the spray like at high speed.
Old     (2500HD)      Join Date: Jul 2015       08-06-2015, 5:40 PM Reply   
I justified putting the tabs on by being able to tune the wake for water skiing. Lol I'll try to get another pic of the exhaust this weekend.
Old     (Giddyup)      Join Date: Aug 2011       08-06-2015, 7:47 PM Reply   
thanks
i was wondering how the spay is at speed, we do use our boat to ski and barefoot with as well, glad to hear the tabs don't affect the wake a speed
I'm looking forward to the exhaust pics
Old     (Giddyup)      Join Date: Aug 2011       08-18-2015, 11:01 AM Reply   
Any more pics on the exhaust or feed back on spray at ski speed

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