21 Hull #136...Restoration...Started

thehermit · #1 05-25-2011, 05:11 PM

Did they calibrate? They are great on the boats

Islandtrader · #2 05-26-2011, 08:07 AM

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Did they calibrate? They are great on the boats

Yep! On the first try.

thehermit · #3 05-26-2011, 08:24 AM

NICE

I had one sticking at first. I love them. They level the boat with ease. They hook up the bow of the 23 in chop too. All that and the indicator switch too....enjoy.

heynow2203 · #4 05-26-2011, 08:30 AM

what did those run you?

Islandtrader · #5 05-27-2011, 12:36 PM

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what did those run you?

I bought them from fore and aft marine.

$619.00

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they work great on my 27, they must really be sensitive on a 23 or a 21, i paid about 600 bucks for mine.

I will post more on them later but let me tell you this, when I tried them yesterday and I was just seeing how they worked, I hit the port side down at speed and almost threw my buddy out of the boat. YOU DON'T NEED MUCH ON A 21

cdavisdb · #6 05-27-2011, 01:45 PM

Ditto on Floorboys comment. I know there must be a good answer, but I can't see how these tabs get around creating excess drag and and drag inducing turbulence . Anybody know?

todosier · #7 05-27-2011, 02:11 PM

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Ditto on Floorboys comment. I know there must be a good answer, but I can't see how these tabs get around creating excess drag and and drag inducing turbulence . Anybody know?

I haven't installed the ql tabs, but I did a bunch of research into the concept of an interceptor plate (which is what they are) and have installed static interceptor plates on a hull I built. From what I have read, plates are in theory more efficient than a tab because they don't have the drag associated with the surface of the tab and for the amount to projection there isn't "turbulance". If they aren't more efficient they sure aren't much less. They don't actually need to engage the water all that much and the amount of throw compared to a tab is small. On my boat the water comes off the edge nice and clean.

People sure don't ever complain about the performance and they sure are a nice clean look on a classic like the 21.

pfbateman · #8 06-02-2011, 10:15 PM

Terry,
Added fore and aft to my favorites list. Thanks again for the education. Still, vertical protrusions from the transom resulting in less drag seems counterintuitive. Never saw that right angle mount for a drill before. Volvo says the QL is good to 50 knots. Is that fast enough for the 21? Sounds like you've been running it. The transom enclosure looks good.

DonV · #9 06-03-2011, 09:27 AM

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Volvo says the QL is good to 50 knots. Is that fast enough for the 21?

I'm thinking that's fast enough for any SeaCraft......jeeeeez.

kerneltugboat · #10 05-26-2011, 12:35 PM

They will stick if the surface they are mounted on is not PERFECT (I actaully had fiberglass backing plates made for mine) , and they should be tightened doen from the center-out. I calibrate mine at the beginning of each season just to be sure. I think you hold down the up and down arrow, apply power and keep the buttons down for ten seconds? then they extend all the way out, and all the way back in automatically and you are ready to go. I am going on three years with no issues after the inital install. they work great on my 27, they must really be sensitive on a 23 or a 21, i paid about 600 bucks for mine.