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 Post subject: Cannot Keep Straight
PostPosted: Wed Jul 31, 2013 3:53 pm 
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Minnow

Joined: Wed Aug 01, 2012 1:12 pm
Posts: 15
We bought our first boat last summer, a 2004 Funship 214 and have always had difficulty maneuvering at slow speeds - the boat will not stay straight. I had always assumed the problem was with us being new to boats and we would eventually learn how. After several hours of boating and observing other boats, I am now convinced there is a problem with this boat and/or this is natural for the Funship.

Any input?


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 Post subject: Re: Cannot Keep Straight
PostPosted: Wed Jul 31, 2013 8:42 pm 
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Joined: Sun Dec 07, 2008 11:07 am
Posts: 815
Location: Freeland, MI
Well... How slow is slow. Are you in any current or out on a lake? Wind or no wind?

There are numerous factors. I find every time I let someone drive my boat that they constantly over correct. Which gets you swinging back and forth. Small corrections a little at a time help with this. This is 6 mph goin down a river with about 2 mph current. It's worse goin upstream than downstream.

Not to be elementary, but if you are fairly new to boating it takes awhile to get the hang of it. Defiantly different than driving a car where the response is immediate when a correction is made

Wind is more of a factor for a cruiser with most the canvas up than a fun ship, but its still a factor.

Hope that helps

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 Post subject: Re: Cannot Keep Straight
PostPosted: Wed Jul 31, 2013 9:17 pm 
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Joined: Sun Nov 20, 2011 8:14 am
Posts: 376
Location: Columbus ,Ohio
How do you have your boat loaded? Is it leaning to one side. I notice our horizon will curve off if not balanced. Add this with wind and trim practice and this could be the culprit.

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 Post subject: Re: Cannot Keep Straight
PostPosted: Thu Aug 01, 2013 4:12 am 
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Joined: Fri Jul 27, 2012 11:17 pm
Posts: 1303
Location: Melbourne, Australia
Boats will always torque steer slightly, due to the rotation of the prop'.
IIRC, prop's with more blades have less tendancy to torque steer the boat.

Easy fix = Go faster! 8)

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 Post subject: Re: Cannot Keep Straight
PostPosted: Thu Aug 01, 2013 7:08 am 
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Joined: Sun Nov 20, 2011 8:14 am
Posts: 376
Location: Columbus ,Ohio
deafwish wrote:
Boats will always torque steer slightly, due to the rotation of the prop'.
IIRC, prop's with more blades have less tendancy to torque steer the boat.

Easy fix = Go faster! 8)

Ya What he says, Go Faster . :lol:
There are so many variables when boating, you also have to remember waves hitting the bow, are you straight on or taking them at an angle.

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2018 Ford F-150 super crew 4x4


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 Post subject: Re: Cannot Keep Straight
PostPosted: Thu Aug 01, 2013 8:26 am 
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Joined: Sun Jul 22, 2012 5:10 pm
Posts: 2032
Location: West Palm Beach, FL
My previous boat (Chaparal 19' cuddy) would wander left & right a great deal at "no-wake" speed or at idle speed. Back and forth about once every 5-10 seconds. Just a characteristic of the hull (particularly a short-wide hull with an I/O). It would take more than 1/4 turn of the steering wheel to counteract, and I had to turn the wheel in anticipation of the movement. The admiral wouldn't even try to drive that boat. It was rock steady at cruising speed, and there were no issues with the steering...just a characteristic of the hull.

I don't know if the load makes much difference, but I suspect that a bow-heavy load would make it worse.

Now my FW Horizon 240 hardly has any of this back and forth. You can only see it if you are looking for it. The admiral is fine with driving the Horizon. :D

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 Post subject: Re: Cannot Keep Straight
PostPosted: Thu Aug 01, 2013 9:58 am 
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Joined: Fri Apr 24, 2009 7:22 am
Posts: 461
Location: Chicago
Set of smart tabs will not only help with bow rise but they also help eliminate low speed wander.


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 Post subject: Re: Cannot Keep Straight
PostPosted: Thu Aug 01, 2013 10:28 am 
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Joined: Sun Nov 21, 2010 8:03 am
Posts: 2238
Location: Winthrop, Ma.
baileyjd1 wrote:
We bought our first boat last summer, a 2004 Funship 214 and have always had difficulty maneuvering at slow speeds - the boat will not stay straight. I had always assumed the problem was with us being new to boats and we would eventually learn how. After several hours of boating and observing other boats, I am now convinced there is a problem with this boat and/or this is natural for the Funship.

Any input?


What kind of drive do you have? That alone will make a big difference.


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 Post subject: Re: Cannot Keep Straight
PostPosted: Thu Aug 01, 2013 12:03 pm 
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Joined: Fri Apr 24, 2009 7:22 am
Posts: 461
Location: Chicago
Paul I. wrote:
baileyjd1 wrote:
We bought our first boat last summer, a 2004 Funship 214 and have always had difficulty maneuvering at slow speeds - the boat will not stay straight. I had always assumed the problem was with us being new to boats and we would eventually learn how. After several hours of boating and observing other boats, I am now convinced there is a problem with this boat and/or this is natural for the Funship.

Any input?


What kind of drive do you have? That alone will make a big difference.


Would have to guess single prop - if he had a dual prop there would be no wander


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 Post subject: Re: Cannot Keep Straight
PostPosted: Thu Aug 01, 2013 12:14 pm 
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Joined: Sun Nov 21, 2010 8:03 am
Posts: 2238
Location: Winthrop, Ma.
captkevin wrote:
Paul I. wrote:
baileyjd1 wrote:
We bought our first boat last summer, a 2004 Funship 214 and have always had difficulty maneuvering at slow speeds - the boat will not stay straight. I had always assumed the problem was with us being new to boats and we would eventually learn how. After several hours of boating and observing other boats, I am now convinced there is a problem with this boat and/or this is natural for the Funship.

Any input?


What kind of drive do you have? That alone will make a big difference.


Would have to guess single prop - if he had a dual prop there would be no wander


I asked because it was not mentioned. But he could of ordered it with a dual prop?


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 Post subject: Re: Cannot Keep Straight
PostPosted: Thu Aug 01, 2013 7:10 pm 
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Joined: Sat Sep 11, 2010 11:24 am
Posts: 179
Location: Salt Lake City, Utah
Does your drive have a alignment tab on it. May need to be adjusted. Is the skeg bent.

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 Post subject: Re: Cannot Keep Straight
PostPosted: Fri Aug 02, 2013 7:27 am 
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Joined: Sun Nov 20, 2011 8:14 am
Posts: 376
Location: Columbus ,Ohio
Fiz ya beat me to the question. Is the skeg bent at all. twisted ?

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5.7 GL Volvo Penta /SX drive. (1.60)
2018 Ford F-150 super crew 4x4


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 Post subject: Re: Cannot Keep Straight
PostPosted: Fri Aug 02, 2013 10:28 am 
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Minnow

Joined: Wed Aug 01, 2012 1:12 pm
Posts: 15
I will now try to answer:

I would define slow as "no wake" speed
Wind, load, etc... does not make a difference
Bravo 1 drive
Skeg is fine

What is a trim tab?

I guess it is just a characteristic of the boat and more practice will help.


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 Post subject: Re: Cannot Keep Straight
PostPosted: Fri Aug 02, 2013 12:26 pm 
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Joined: Fri Apr 24, 2009 7:22 am
Posts: 461
Location: Chicago
This would be your cheapest way to add tabs

http://www.nauticusinc.com/

Everyone i know that added them loves them


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 Post subject: Re: Cannot Keep Straight
PostPosted: Fri Aug 02, 2013 6:53 pm 
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Joined: Sat Sep 11, 2010 11:24 am
Posts: 179
Location: Salt Lake City, Utah
I apologize for the miscommunication the tab I was talking about is on the drive that acts like a rudder that you can make small adjustments either direction to straighten out any wander. My old OMC drive had one but my SX does not so it may not be any help to you anyway. I'm sure LouC has one on his drive so maybe he can explain it better than I can.

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