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View Full Version : 2002 Maristar Trim Tab


gregg
08-22-2005, 01:14 PM
After many conversations with Jeff at Lenco and Cotton at Mastercraft (Both were very helpful I might add), I ordered, received and installed a trim tab late last week. I ended up using the Mastercraft kit (same as the new 230's). The kits appear to be in the $800.00 range and Mike at MC of Charlotte or any dealer should be able to order them. Two modifications had to be done, and just took a little time and detail work. First, the cut out for the transom drain had to be cut all the way down to the pin for the hinge. This would allow the plate to be mounted high enough on the transom to leave 1/4 inch in the center and 1/8 inch at each end of the hinge clearance to the bottom of the transom. I also ground a little off the bottom of my transom drain. Next, a very slight bend of the plate had to be made on each side from the end of the hinge at an angle to the trailing edge of the plate. This would allow the leading edge of the plate to follow the contour of the hull and keep about a 1/4 inch clearance. With the plate mounted to the transom, actuator and upper mount attached to the plate, I mounted the actuator as far up as possible. With a straightedge on the bottom of the hull this left me with 3/4 inch clearance to the trailing edge of the plate with the actuator retracted. The wire runs thru the upper mount and I chose to use the reversing switch (just like the ballast pumps use) because it mounted in my shift console without any modification or cutting. I did not use the control box or indicator gauge either. Will try to post pics also.

RESULTS: Porpoising gone with a slight tab lowering (yahoo!!!), did not get to test the results for choppy water as the lake was like glass yesterday ( no complaints here), did not ski behind it yet, but appears to flatten out the wake with bow down also. All in all, very happy with results over adding hook, as I can adjust my ride around my passengers and not adjust my passengers. All that is left is to make some slight adjustments to the plate as the prop torque to the starboard side seems to get a little worse the farther the plate is lowered.

gregg
08-22-2005, 01:23 PM
More pics of tab install

NeilM
08-22-2005, 01:46 PM
Gregg, that's fantastic. I've been seriously considering putting a tab on my 2002 MariStar as well, for the same reasons..

Keep us up to date..

Neil

BigBarney
08-22-2005, 01:55 PM
That looks really snazy G. What did you use to bend the edges. Looks a little difficult with the sides turned up. Also, is the screen on your drain plug your idea? If so, what provoked you to add it? Now I am really wanting to get the trim tab for my x30.

Tom023
08-22-2005, 01:59 PM
Looks great, I am glad it solved your issue. I would be interested in knowing if you feel it makes the skiing wake significantly smaller. BTW, what is that screen around your transom drain? I have those for my ballast fill inlets, but not on the drain.

gregg
08-22-2005, 02:04 PM
BB. I just used a vise and a 2x4 to bend the corners. I thought about cutting a v in the lip on the trailing edge and bending straight back from the end of the hinge, but decided to bend at an angle from the end of the hinge to the trailing corner which keeps the leading edge up. the trailing edge is at a neg. angle untill lowered anyway. I put the screen on because I use that for my water intake and exhaust for a tube sac in my port side rear storage compartment.

bigmac
08-22-2005, 02:14 PM
Really great post, Gregg. Thank you very much for the effort. I don't have a porpoising problem on my '04 230VRS, but I wouldn't mind getting the bow down a little and flattening the wake a little. Plus, it looks like it would be kind of an interesting project.

I'll be very interested in your opinion of the wake changes for slalom, as well as your opinion on the effect it might have on top speed. I assume that the max speed doesn't change if the tab is fully retracted.

One question about the install...anything particularly tricky about drilling through the transom for the wiring? What size and length drill bit?

gregg
08-22-2005, 02:39 PM
Pretty cut and dry, instructions are a little generic in my opinion. I believe it was 3/16 drill, 1 and 1/4 deep for the hinge and upper mount. Went all the way thru on all holes, so you will need to check and make sure no wires or hoses are in the way on the inside. The instructions say 3/8 drill for the wire, but I went smaller, just large enough for the wire to pass thru. A must for this install is 3M 5200 marine sealer for the screw holes and wire hole.

bigmac
08-22-2005, 02:58 PM
I believe it was 3/16 drill, 1 and 1/4 deep for the hinge and upper mount. Went all the way thru on all holes, so you will need to check and make sure no wires or hoses are in the way on the inside.

Ah...I take it then that the plate is actually bolted on rather than screwed on? Seems like that would make it a two-person operation since you'd need someone in the bilge to tighten the nuts.

I was thinking that the plate mounted with ss machine screws into the material of the transom and the only through-hole was for the wire from the actuator.

Not that there's anything wrong with that...just planning my job schedule for the install ;)

prostar205
08-22-2005, 03:28 PM
Gregg -

Very nice job. I, too, am very interested in seeing the results while slalom skiing behind your boat. My X30 does not the porpoising issue (knock on wood) but the ski wake is less than desireable.

Did you screw directly into the transome material or are all the fasteners thru bolted?

gregg
08-22-2005, 03:29 PM
I did use the SS screws supplied with the kit. My point was that the transom is less that an inch and a quarter thick so the bit will go all the way thru. Up where the actuator mounts the transom is a little thicker, so for the wire you will have to drill deeper.

bigmac
08-22-2005, 03:33 PM
I did use the SS screws supplied with the kit. My point was that the transom is less that an inch and a quarter thick so the bit will go all the way thru. Up where the actuator mounts the transom is a little thicker, so for the wire you will have to drill deeper.

OK...I get it now. Thanks.

sully
08-22-2005, 06:39 PM
I see a winter project on my horizon.

Thanks

buy_txn
08-28-2005, 03:03 PM
Gregg,

Nice work! I'm having a simliar issue with porpoising on my Maristar 210. When it is all said and done, can you adjust the wake for slalom ski and then dial it up for Wakeboarding too? I'd really like to solve my porpoise problem and be able to adjust the wake "on the fly" like the TAPS system is marketed to do.

gregg
08-29-2005, 09:41 AM
Here are some of my observations using the tab so far. Have not done much in the way of sking or boarding as my 19 year old is a frat boy here at KSU now and has not been out with us yet since the install. At 30 mph with a slight deployment of the plate the wake appears to improve some. Remember these Maristars are not slalom friendly so any improvement would be a bonus. The main driving force for this install was the porpoising issue. At any speed, regardless of where the passengers are a small amount of tab takes care of it. I did not have time to surf Saturday, but playing around with it, much to my surprise at 10 mph it appeared to make the surf wake taller and cleaner with the tab deployed all the way. Hope to have a more detailed report after next weekend.

NeilM
08-29-2005, 10:36 AM
I see a winter project on my horizon.

Thanks

Me too... :(

sully
09-15-2005, 11:57 PM
Gregg
Can you update on your observations on the ski wake with the tab?

Sully

gregg
09-16-2005, 07:41 AM
To be honest, with my daughters wedding happening tomorrow and the last couple of weekends looking like a cat. 1 hurricane on the lake, I have not even had my ski in the water. I will tell you looking back while running at 30 to 34 mph the wake does appear to get much shorter and softer. Keep in mind I am only a rec. slalom skier, so not an expert on this subject. For everything else I love this tab. Better ride in chop, porpoising gone, planes much better, and have not got to surf it yet, but apprears to be a lot of changes in the wake at 10 mph.

prostar205
09-25-2005, 12:04 PM
Gregg -

Any updates on the ski-ablity with the new trim tab? I took my X30 out yesterday on some very smooth water. With 6 people in the boat, the front did porpoiuos (spelling???). We had to put one of the guys in the front and that seemed to help out a little. I think the trim tab will be going on the boat over the winter.

I have some questions on the install.
1) on a scale of 1-10, how hard was the install?? I am a mechanical engineer and fairly well versed with general DIY projects on my truck and boat.
2) Did you contact Lenco direct for your trim tab?
3) What type of a switch did you use? I want to use a switch that looks stock (similar to the ballast switches). I plan on removing my tower light switch, which I do not use, and install the trim tab switch in this location, next to the 3 ballast switches.

Thanks for your help.

gregg
09-26-2005, 06:59 PM
Gregg -

Any updates on the ski-ablity with the new trim tab? I took my X30 out yesterday on some very smooth water. With 6 people in the boat, the front did porpoiuos (spelling???). We had to put one of the guys in the front and that seemed to help out a little. I think the trim tab will be going on the boat over the winter.

I have some questions on the install.
1) on a scale of 1-10, how hard was the install?? I am a mechanical engineer and fairly well versed with general DIY projects on my truck and boat.
2) Did you contact Lenco direct for your trim tab?
3) What type of a switch did you use? I want to use a switch that looks stock (similar to the ballast switches). I plan on removing my tower light switch, which I do not use, and install the trim tab switch in this location, next to the 3 ballast switches.

Thanks for your help.
As a matter of fact I did slalom yesterday. Wake is much softer with the tab down only a small amount. Keep in mind I am not a course skier, but even I could tell a pleasant difference.

If you read my first post question 3 is answered, there is a pic. of the switch also. #2 Talked to Bennett, Lenco, and Mastercraft, ended up with the Lenco tab that is used on the 2006 X-30\230s. Finally, I would give the install about a 2. Not very difficult at all, just and little time and patience. Tried to give as much detail as possible.

Keep in mind my install was on a Maristar 210. On a 230 you may have more room below the transom drain, some of the modifications may not have to be done.

BigBarney
10-11-2005, 05:35 PM
Gregg,

Did you have any discussions with Mastercraft and/or your dealer in regards to stress on the hull as a result of the trim tab? I am seriously thinking about adding this to my boat, but am wondering about long term negative issues?

gregg
10-13-2005, 12:11 PM
Gregg,

Did you have any discussions with Mastercraft and/or your dealer in regards to stress on the hull as a result of the trim tab? I am seriously thinking about adding this to my boat, but am wondering about long term negative issues?

Cotton at Mastercraft had no concerns about hull or transom stress. These Mastercrafts are pretty solid and plenty thick back there. Oddly enough on my 210 the transom is actually thicker in the area where the top of the actuator mounts. I would guess that to be where most of the stress would be. Have seen no problems or concerns yet, and absolutely love the results.

BigBarney
10-13-2005, 04:01 PM
Thanks Gregg. One other thing, did you have very little room between the bottom of your rear drain plug housing and the bottom of the hull? After looking at mine, I probably have less than 1/2 inch. I know you had to grind some of your housing and cut out the trim plate to make it fit. I would probably have to do the same. But I wonder if my year/model has even less space than yours.

gregg
10-13-2005, 04:30 PM
Thanks Gregg. One other thing, did you have very little room between the bottom of your rear drain plug housing and the bottom of the hull? After looking at mine, I probably have less than 1/2 inch. I know you had to grind some of your housing and cut out the trim plate to make it fit. I would probably have to do the same. But I wonder if my year/model has even less space than yours.

That is about what I had to work with also. That's the reason for the cutting and grinding. Also, it makes it necessary to bend up the outside leading edge of the tab to conform with the hull. The 2006's have much more distance from the transom drain to the bottom of the hull. If you need anything else, let me know.

prostar205
10-13-2005, 04:46 PM
Gregg -

After reviewing your original pictures in this thread, I have a question.

Do the 10 screws that hold the lip of the trim tab to the hull go all the way thru the hull and have a nut on the other side or do they simply screw into the hull material and do not poke thru to the inside of the boat?

gregg
10-13-2005, 05:06 PM
Gregg -

After reviewing your original pictures in this thread, I have a question.

Do the 10 screws that hold the lip of the trim tab to the hull go all the way thru the hull and have a nut on the other side or do they simply screw into the hull material and do not poke thru to the inside of the boat?

Stainless Steel sheetmetal screws supplied with the kit. The transom is about an inch thick, so they do protrude inside just a little. Remember to include 3m 5200 sealer\adheasive on your materials needed list.

prostar205
10-15-2005, 12:53 PM
Interesting news regarding the Cotton at MasterCraft told you. I asked the question regarding stress at the transome to my local dealer. Here is what I got.

Service Department - they stated no problems and would be happy to install the unit on my X30 if I did not feel up to it.

Sales Department - NO WAY, NO HOW would there dealership install a trim tab on my boat. They stated the boat is not designed to take the stress imposed by the trim tab. Also, the issue of product liability came up and what happens if the trim tab is ripped off the boat leaving a big hole. If the boat sinks it was this persons belief that MC would be responsible.

Anyone have any thoughts???????

I still want to add this tab and probably will do it.

bigmac
10-16-2005, 08:36 AM
Sales Department - NO WAY, NO HOW would there dealership install a trim tab on my boat. They stated the boat is not designed to take the stress imposed by the trim tab. Also, the issue of product liability came up and what happens if the trim tab is ripped off the boat leaving a big hole. If the boat sinks it was this persons belief that MC would be responsible.

Anyone have any thoughts???????



My thoughts for the sales department..... :moon:

Seriously, I can't fart loud enough to adequately express my opinion of that salesperson's statement. I'll bet he's going to law school...

prostar205
10-16-2005, 12:27 PM
Bigmac -

Nicely stated. I could not have stated any better.

Trim Tab here I come!!!!!!!!!!!!!!!!!!!!!!

prostar205
09-22-2006, 12:59 PM
Gregg -

With winter approaching I was wondering if you could give us a report on how you are liking (or not liking) the Lenco trim tab on your X10? I was thinking of adding this during the winter. How is the ski wake, surf wake and wakeboard wake? Did is decrease your porpoising issue?