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HOW do you zero trim tabs ???

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Old 04-29-2005, 12:44 AM
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Default HOW do you zero trim tabs ???

I have heard 2 ways .

One.. With a straight edge on the bottom of the boat make the tab level with the bottom of the boat.[Same angle]

Two.. Use the straight edge and adjust the tab where the tip of the tab touches the straight edge [seems like this would make it pointed down rather than flat with the bottom]


Also the water will be rolling off the back edge going up.I would think at zero that it would be touching the water pretty good unless that area is out of the water Like when your running close to 100mph.I know the speedo tube is out of the water at that speed ..

Thanks for you imput

Chinmewalker Rob
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Old 04-29-2005, 05:37 AM
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Default Re: HOW do you zero trim tabs ???

I've always heard the first rule Rob. that way in effect its an extension of the hull. Lower your speedo tube, lol. did you get the steering fixed?
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Old 04-29-2005, 06:19 AM
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Default Re: HOW do you zero trim tabs ???

ditto
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Old 04-29-2005, 06:25 AM
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Thumbs up Re: HOW do you zero trim tabs ???

I have always gone by having them parallel to the bottom of the boat. You can just use a long strait edge. Pick a number to adjust them up both the same on the indicator gage and then mark the indicator gage. I marked them by taking 2 pieces of masking tape acoss the indicator leaving a thin opening over the number for neutral position and then painting the line across. Remove the tape and it looks like it was done at the factory!
I found that having a mark on the indicators for reference when we are racing is so much easier than trying read the numbers!

Last edited by TomR; 04-29-2005 at 06:29 AM.
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Old 04-29-2005, 08:14 AM
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Default Re: HOW do you zero trim tabs ???

Yea the steering is fixed and is better than it has ever been

I guess I need a GPS in the dash .I don't think I can lower the tube enough.Yea Bill it is getting pretty far out of the water.My Buddy's rather hold on than hold the handheld GPS

I adjusted the tab like #1 with them flush with the bottom of the boat with in of a 1/16. With it the same as the bottom of the boat I zeroed the gage . Hustler told me to do it the 2nd way.I guess its just a reference point anyway as long as they are exactly the same .

Anybody else have any suggestions????

Thanks

Rob
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Old 04-29-2005, 08:09 PM
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Default Re: HOW do you zero trim tabs ???

What about props? if you have too much stern lift, you may be pushing out too far with the new horsepower. from what Julie told me, round tips give stern lift, cleavers give bow lift...Rob
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Old 04-30-2005, 02:23 AM
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Default Re: HOW do you zero trim tabs ???

Originally Posted by Strip Poker 388

Anybody else have any suggestions????

Thanks

Rob

don't buy rope from the little old man at the corner
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Old 04-30-2005, 03:17 AM
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Default Re: HOW do you zero trim tabs ???

Rob-Good talking to you yesterday. About lowering the speedometer Pitot tube, my Slingshot has the standard 7" pitot tube that I have to replace every season (get bent) from Livorsi (p/n GCT1, $17). Catalog shows a 5" and a 10" tube. CT1L is p/n for longer tube. Don't know about latest prices because I order 2-3 at a time. Even with the Northstar, I like to see the speedometer. Lou
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Old 04-30-2005, 08:41 AM
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Default Re: HOW do you zero trim tabs ???

Originally Posted by open72
don't buy rope from the little old man at the corner
eric Rope or dope

Lou I guess I need a gps speedo anyway Thsy tube is prob slowing down some a 10th od a mph anyway


rob
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Old 04-30-2005, 10:34 AM
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Default Re: HOW do you zero trim tabs ???

Rob- You're just looking for another excuse to turn yourself into Gumby under the dash! I thought you would have learned your lesson after changing the K-Plane cables and messing with the power steering/helm! Just kidding. Lou
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