Author Topic: Are 9x9 Lencos big enough for a 16SC?  (Read 2227 times)

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Online Fisherdv

Are 9x9 Lencos big enough for a 16SC?
« on: January 23, 2018, 07:30:28 AM »
I’m looking into trim tabs for my 16SC. Are 9x9’s Lenco big enough? I know most people do 9x12 on larger Arimas, and a few have 9x12 on a 16. 9x12 would be my first choice but as you guys know on a 16 the space is very limited. I already anticipated adding tabs when I mounted my transducer (I mounted it twords the center) and may barely have room for 9x12, with 12 being the width. I’m concerned that if I ever get a larger transducer like a total scan, that’s 10 in long that it may hit my motor lower end when at full turn being so close to the center. With the 9x9 I would have much more room to work with/add accessories if needed. Anybody run the 9x9’s? Are 9x9 enough to hold the nose down in a good wind chop?
2018, Sea Chaser 16, Honda 60HP

Offline Chief of the Boat

1994 Sea Explorer 1511 loves whitecaps 2010 Yamaha F-70 2012 Yamaha F-8 with a  Fixed SaltBoss Bracket Lowrance HDS-5 & 7 Gen 2 Standard Horizon Fixed VHF 2150 with AIS

Online Fisherdv

Re: Are 9x9 Lencos big enough for a 16SC?
« Reply #2 on: January 23, 2018, 07:54:53 AM »
My ducer now is real close to the motor like yours. I got lucky that even in that location I’m able to hold bottom at WOT.      COB, what size are your tabs? Looks like 9in wide?
2018, Sea Chaser 16, Honda 60HP

Offline Chief of the Boat

Re: Are 9x9 Lencos big enough for a 16SC?
« Reply #3 on: January 23, 2018, 08:07:55 AM »
12' wide 9' deep
1994 Sea Explorer 1511 loves whitecaps 2010 Yamaha F-70 2012 Yamaha F-8 with a  Fixed SaltBoss Bracket Lowrance HDS-5 & 7 Gen 2 Standard Horizon Fixed VHF 2150 with AIS

Offline J Chaser

Re: Are 9x9 Lencos big enough for a 16SC?
« Reply #4 on: January 23, 2018, 09:11:30 AM »
The 9 x 12 will be fine on your boat.

J.
Sea Chaser 1511, Yamaha F70, Yamaha F6 kicker

Online Fisherdv

Re: Are 9x9 Lencos big enough for a 16SC?
« Reply #5 on: January 23, 2018, 09:24:53 AM »
The problem I’m seeing is twords the right side of the transom where the tab bracket goes the transom starts to curve up a bit. See picture with the red circle. In order for a 12 inch wide tab bracket to fit flat on the transom, I would run into my transducer pad. If I move the tab bracket more to the right side it won’t lay perfectly flat. I thought I moved my transducer enough.
2018, Sea Chaser 16, Honda 60HP

Offline Croaker Stroker

Re: Are 9x9 Lencos big enough for a 16SC?
« Reply #6 on: January 23, 2018, 11:03:44 AM »


I use the trim on my motor. My trim tabs are only used to balance the boat side to side. I don’t see any reason that 9x9 wouldn’t work. That said, I went with the factory recommended 9 x 12. 

I do get a bit too much splashing because I mounted them too close to the motor to make room for my transducer.
1987 - 17' Sea Pacer - 2004 Evinrude 90 E-tec
15' Sea Sprinter - **SOLD**

"If a fish will, he will… if he won't, he won't… and that's about it… except… he may take this when he won't take that."

Online Fisherdv

Re: Are 9x9 Lencos big enough for a 16SC?
« Reply #7 on: January 23, 2018, 11:18:57 AM »
In ocean swells I would probably only use for listing. I’d mostly use them in the bay and river wind chop. Just not sure if the 9x9 would be enough. I used to have a 17 ft boat with a fin on the motor and it made a big difference in the chop. Even with only 9x9 tabs, that would still be much more surface area than that motor fin :shrug9: The 9x12 would basically take up my whole transom and I’d be very limited in my transducer choices
2018, Sea Chaser 16, Honda 60HP

Offline Croaker Stroker

Re: Are 9x9 Lencos big enough for a 16SC?
« Reply #8 on: January 23, 2018, 01:08:14 PM »

I have had a couple of boats with the fin. They do come up on plane faster with those. However, they drag a lot. You loose top end.

I am in no hurry to come up on plane.

There is usually a trim pin on the outboard trim mechanism. On my little 50hp Yamaha, I removed it (after the dealer suggesting), and got a little more down trim.  All locations are different but, in wind chop, I generally run with my bow trimmed up, not down. Personal preference I guess.  :beerchug:
1987 - 17' Sea Pacer - 2004 Evinrude 90 E-tec
15' Sea Sprinter - **SOLD**

"If a fish will, he will… if he won't, he won't… and that's about it… except… he may take this when he won't take that."

Offline beancounter

Re: Are 9x9 Lencos big enough for a 16SC?
« Reply #9 on: January 23, 2018, 01:37:23 PM »
I have Bennett M-80 tabs on my 19 Chaser and they work great. I believe they are 8x10 and gives you more room for your transducer.

Offline dbhazjack

Re: Are 9x9 Lencos big enough for a 16SC?
« Reply #10 on: January 23, 2018, 01:39:34 PM »
Here is a pic of the 9X12 Lenco’s on my 17’ SC next to a P66 ducer. As you can see it is fairly tight to the sponson and the ducer is closer to the motor than I could wish but really no complaints with either.

 


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2013 17' Sea Chaser, 90 hp Honda, 8 hp Honda Kicker.

Online Fisherdv

Re: Are 9x9 Lencos big enough for a 16SC?
« Reply #11 on: January 23, 2018, 01:50:06 PM »
Here is a pic of the 9X12 Lenco’s on my 17’ SC next to a P66 ducer. As you can see it is fairly tight to the sponson and the ducer is closer to the motor than I could wish but really no complaints with either.

 


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I wouldn’t be able to mount it that far to the right as my transom looks like it curves where it meets the sponsons more than yours
2018, Sea Chaser 16, Honda 60HP

Offline Tj805

Re: Are 9x9 Lencos big enough for a 16SC?
« Reply #12 on: January 23, 2018, 02:30:45 PM »
I have just a whale tail on my 17 ranger
Works fine.
Thought about getting tabs to level the boat but it doesn't really list .
So I figured why bother .
The previous owner said don't take the whale take off .
Said the boat handles a lot better with it.
If it's not broke don't fix it !
2000 sea chaser 19
Honda 130
2014 yamaha f8

Offline Threeweight

Re: Are 9x9 Lencos big enough for a 16SC?
« Reply #13 on: January 23, 2018, 03:03:15 PM »
IMO, just buy a set of Smart Tabs or the new Bennett tabs that work on the same principle.  You won't be able to adjust for side to side list on the fly, but you will get slower planing speeds, better fuel economy, and a better ride.

The 60# resistance Smart Tabs should work for your application (I had them on my 17' Arima), and they are 9.5" wide by 10" long.

The new Bennett tabs in 6"x8" are even smaller, and should work fine (this is their recommended size on up to a 17' boat).

I have electric tabs with trim indicators on the tin can... had Smart Tabs on the Arima.  I love my $750 set up on Wild Card, but the $100 Smart Tabs did great for everything I used the Arima for (including regular ocean use 10-30 miles offshore).
Former Sea Chaser 17 owner
Wild Card, Hewescraft Ocean Pro 220, Honda 225 and 9.9

“Never turn your back on fear. It should always be in front of you, like a thing that might have to be killed.”
       --- Hunter S. Thompson

Online Fisherdv

Re: Are 9x9 Lencos big enough for a 16SC?
« Reply #14 on: January 23, 2018, 03:18:52 PM »
I’ve considered smart tabs also but would really like to be able to retract them. I’d hate to make all those holes for smart tabs and then want to switch to Lencos. (I’m sure the holes wouldn’t match up). In your opinion, if I go with the Lenco 9x9 is that enough surface area to be effective on my hull? They would fit very nicely in there. My garage would limit my 2-footitis so I’ll probably have this boat for a while
« Last Edit: January 23, 2018, 04:21:01 PM by Fisherdv »
2018, Sea Chaser 16, Honda 60HP

Offline First Cabin

Re: Are 9x9 Lencos big enough for a 16SC?
« Reply #15 on: January 23, 2018, 04:20:03 PM »
Here is a pic of the 9X12 Lenco’s on my 17’ SC next to a P66 ducer. As you can see it is fairly tight to the sponson and the ducer is closer to the motor than I could wish but really no complaints with either.

 


Sent from my iPhone using Tapatalk
I wouldn’t be able to mount it that far to the right as my transom looks like it curves where it meets the sponsons more than yours

Yours is the same.  He just ignored the curve and you can’t see it here.  I’d do the same.
First:  1982 15' SeaHunter, Yamaha 70 2-stroke, Yamaha F6
Second:  1987 17' SeaRanger, Merc 90 2-stroke, Yamaha F8
Current:  2002 17' SeaChaser, Yamaha F100, Yamaha T8

Online Fisherdv

Re: Are 9x9 Lencos big enough for a 16SC?
« Reply #16 on: January 23, 2018, 04:23:57 PM »
If I go that far to the right, the right side of the tab bracket starts to lift off the transom and has about a 1/16 in gap
2018, Sea Chaser 16, Honda 60HP

Offline dbhazjack

Re: Are 9x9 Lencos big enough for a 16SC?
« Reply #17 on: January 23, 2018, 04:24:20 PM »
Looks pretty much the same to me Fisher. Maybe this is a better angle?




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2013 17' Sea Chaser, 90 hp Honda, 8 hp Honda Kicker.

Online Fisherdv

Re: Are 9x9 Lencos big enough for a 16SC?
« Reply #18 on: January 23, 2018, 04:34:35 PM »
It’s the flat part where the bracket lays, not the bottom. If you follow under the bracket from left to right, the transom starts to curve twords the sponson. The further to the right I move the bracket, the more it raises up. It’s hard to explain I guess. I’ll post a picture of what I mean when I get home
2018, Sea Chaser 16, Honda 60HP

Offline dbhazjack

Re: Are 9x9 Lencos big enough for a 16SC?
« Reply #19 on: January 23, 2018, 04:45:06 PM »
It’s the flat part where the bracket lays, not the bottom. If you follow under the bracket from left to right, the transom starts to curve twords the sponson. It’s hard to explain I guess. I’ll post a picture of what I mean when I get home

That is different. Mine is flat across the transom. Perhaps a shim would be possible but you definitely want a nice secure fit since you are drilling into the transom.

One thing to mention when tapping and screwing into gel coat/fiberglass that you probably already know, but I wish I had BEFORE I did any mounting is, after drilling the initial hole appropriate for the size of the screw, use a chamfer bit to relieve the gel coat to the full screw width or you will crack the #%*@ out of it! Why do I know this?  :hoboy:
2013 17' Sea Chaser, 90 hp Honda, 8 hp Honda Kicker.

Online Fisherdv

Re: Are 9x9 Lencos big enough for a 16SC?
« Reply #20 on: January 23, 2018, 04:45:33 PM »
It’s the curve here where the transom meets the sponson. The corner vertically, is curved. I have to go about 2 or 3 inches to the left to make the bracket sit flat
« Last Edit: January 23, 2018, 05:31:01 PM by Fisherdv »
2018, Sea Chaser 16, Honda 60HP

Online Fisherdv

Re: Are 9x9 Lencos big enough for a 16SC?
« Reply #21 on: January 23, 2018, 05:35:20 PM »
I hear ya on the drilling, that fiberglass has no give. I use a bradpoint bit in reverse first, then drill forward. Seems to work pretty well
2018, Sea Chaser 16, Honda 60HP

Online Fisherdv

Re: Are 9x9 Lencos big enough for a 16SC?
« Reply #22 on: January 23, 2018, 07:48:01 PM »
Here’s some pics of what I’m talking about. Because of the curve on the transom the straight edge, or tab bracket will not lay flat unless moved way over to the left. Look at the ruler at the “10 in area”, there is about 1/8 or 1/16 inch gap. My transom has a very gradual curve to it

« Last Edit: January 23, 2018, 07:52:00 PM by Fisherdv »
2018, Sea Chaser 16, Honda 60HP

Offline cohosalmon

Re: Are 9x9 Lencos big enough for a 16SC?
« Reply #23 on: January 23, 2018, 09:00:12 PM »
Use the 9x9 tabs, they will work absolutely fine for you! There is no reason why they wouldn't work. Compared to the larger ones you will have to trim a bit more for the same gain but so what!?

Offline Croaker Stroker

Re: Are 9x9 Lencos big enough for a 16SC?
« Reply #24 on: January 23, 2018, 09:37:06 PM »


Mine does not have a big radius like that.  :shrug9:

1987 - 17' Sea Pacer - 2004 Evinrude 90 E-tec
15' Sea Sprinter - **SOLD**

"If a fish will, he will… if he won't, he won't… and that's about it… except… he may take this when he won't take that."