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Author Topic:   Weather Helm
Powergroove803 posted 05-05-2014 09:33 AM ET (US)   Profile for Powergroove803   Send Email to Powergroove803  
New engine on boat so [the engine is] in the break-in period and finally getting to where [the engine] can run at high RPM. I have noticed at lower speeds I have a pretty firm pull to the right but this eases off to almost neutral at higher speeds. Adjust the trim tab? Adjust motor position at lower speeds? What is the answer here?
ConB posted 05-05-2014 02:24 PM ET (US)     Profile for ConB  Send Email to ConB     
Reef sooner.
Teak Oil posted 05-05-2014 06:40 PM ET (US)     Profile for Teak Oil  Send Email to Teak Oil     
The motor is probably mounted too low, enhancing the effect called torque steer.

You can adjust the tab behind the prop and see if it helps. It can't hurt

tedious posted 05-06-2014 09:22 AM ET (US)     Profile for tedious  Send Email to tedious     
Tighten the forestay, slack the mainstay.


jimh posted 05-06-2014 01:09 PM ET (US)     Profile for jimh  Send Email to jimh     
Yes, take a reef in the mainsail. You know the old saying: the best time to reef is when you first think about a reef.
Powergroove803 posted 05-07-2014 02:29 PM ET (US)     Profile for Powergroove803  Send Email to Powergroove803     
I guess I opened myself open to that one...

Torque Steer

Got it!

jimh posted 05-07-2014 03:08 PM ET (US)     Profile for jimh  Send Email to jimh     
Re Boston Whaler boats and their behavior in wind:

I have noticed that my Boston Whaler boat tends to lean into the wind if there is a cross wind. I was rather surprised by this, but then an explanation was provided, which I have found to be plausible: the Whaler hull lists into the direction of a cross wind because you are giving the helm some turn into the wind to keep the boat tracking straight.

To be clear, if the wind is blowing from the West, and I am traveling North in a Boston Whaler, the hull tends to list to Port. This is believed to be a result of having a bit of left turn applied to the helm to compensate for the windage on the boat blowing it to leeward (or EAST in the example above).

As for steering torque, see the owner's manual: html#trimTab

and reference/ manual9-17/ operations.html#trimTab

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