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-   -   Center Trim Tab vs Bow Sac (http://www.mastercraft.com/teamtalk/showthread.php?t=51748)

Memo 11-20-2012 03:32 PM

Center Trim Tab vs Bow Sac
 
This is something I have been contemplating for a winter project. I have a 2007 X1. It has 2x 700lbs bags in the back, 370lbs bag in the center locker and lots of shot weight in bow locker. Family enjoys all 3 activities, ski, board and surf. So I am thinking about installing a center trim tab as an alternative to bow sac. My though is that I can use the tab halfway to, clean up the ski wake, and all the way down to provide stern lift while boarding or surfing. For those of you with center tabs, have you used the center tab instead of taking on water for front ballast? When the tab is all the way down, how much stern lift does it provide? Does the tab provide enough stern lift to replace the bow sac? Appreciate any input.
Memo

willyt 11-20-2012 04:39 PM

i dont think the center tab is meant to replace ballast, if anything i think in the down position it would be detrimental to the wakeboard/surf wake.

i've seen it destroy a surf wake in about 2 seconds. it actually was pretty funny because the surfer wasnt expecting it *cough*mattscraft*cough*

jafo9 11-20-2012 05:57 PM

not an x1, but my experience with our trim tab is that it is extremely useful for helping the boat not porpoise in chop when cruising. it is somewhat useful to "dial down" the wakeboard wake when the kids are behind the boat. it also seems useful to make a better slalom wake as well. i really haven't found a whole lot of use for it when surfing. ours is an 02 X30. the estimate i remember from a previous thread was around $1600 in parts with the owner doing the install.

prostar205 11-20-2012 11:38 PM

I installed the 2011 Attitude Adjustment plate on my '02 X30 and absolutely LOVE it. However, as jafo9 states, it really is only to help decrease porpoising at speeds over 20 mph, in my case. I use it in the all the way up position when boarding or surfing. It will cost you about $1,600 if you install the factory position guage.

wheelerd 11-21-2012 12:10 AM

I just purchased a brand new Bennett X18 (18 x 12) wake plate unit from a guy on Craigslist. It arrived yesterday. Got it for $250 plus shipping. Everything came in the original box. I just need to purchase the TX1000 trim gauge that goes with it -- retail should be around $100 for that.

I got it for my 05 X2 the reasons stated above -- clean up the slalom wake and reduce porpoising.

GoneBoatN 11-21-2012 11:50 AM

I use it for my 12 year old daughter who wakeboards at a rather slow speed, 16 mph, with no ballast. Dropping it about 35% helps clean up the wake a little farther back at this speed. Also for the reasons mentioned above, mainly to make taking heavy chop a little easier when cruising. This is on a 2010 X-15. If the center tab is down even the slightest when my son is boarding he says it ruins the wake; I have not made that mistake while I'm boarding. :D

Memo 11-21-2012 12:45 PM

Thank you for your input. :wavey:

MattsCraft 11-21-2012 07:44 PM

Quote:

Originally Posted by willyt (Post 891601)
i dont think the center tab is meant to replace ballast, if anything i think in the down position it would be detrimental to the wakeboard/surf wake.

i've seen it destroy a surf wake in about 2 seconds. it actually was pretty funny because the surfer wasnt expecting it *cough*mattscraft*cough*

Did I do that, never:D Why, why why would you mess up your Son's expert surf set... Because I can:D

Late, but agree with all the comments, Tab only pushes the bow down, does not sink the boat, which is important to create a bigger nice shaped wake, boarding or surfing, does help with porpoise, lengthen the surf wave (used in small increments) or flatten for ski.

Funny how Tige calls it TAPS to shape the wake, well yes to a point. Personally, outside of the Xstar debate on it's value (TBD on that one), can't imagine not having it on most inboards, combined with outside tabs (Surf Tabs), so you don't have to move people around to level the boat.

Holman J.B.F 11-22-2012 02:35 AM

Better holeshot... that is the major benefit from a Center trimtab.

mccobmd 11-22-2012 08:29 AM

I've looked at this in detail but just haven't pulled the trigger. I have a 06 x1. There are 2 advantages you MAY get. 1. Smaller slalom wake at slower speeds. It won't likely help alot over 32mph but at 26 to 32 I think it will. 2) The wakeboard wake is huge for people for learning to ski, wakeboard and kneeboard at slower speeds. Will help this a lot. There is limited space below the drain plug so you'll have to customize the mounting plate for the tab itself. I have tried to find flow diagrams for that hull to make sure it would be worth the money. I still may add it this summer. I you do let me know. PS it won't help the surf or wakeboard wakes other than smaller. I my X1 I run 400 in the middle bow, 150 port bow seat, 850 port locker KGB full and 400 on back seat port side. Really nice long wake for this hull.


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