[Public-List] Tiller Head

Mon Oct 12 10:23:30 PDT 2009

You may be right on that.
John boor
MAHSEER #380

> John,
>
> I'm about to order a replacement head from Edson Marine - is your shaft
> 3/4"?  I thought they were 1".
>
> Thanks,
>
> Jon
>
> -----Original Message-----
> From: public-list-bounces at lists.alberg30.org
> [mailto:public-list-bounces at lists.alberg30.org] On Behalf Of
> mahseer at kos.net
> Sent: Monday, October 12, 2009 9:48 AM
> To: Alberg 30 Public List -- open to all
> Subject: Re: [Public-List] Tiller Head
>
> I also drilled a hole through the rudder post and used a sheer pin instead
> of a bolt.  However over time I think this is a mistake because I now have
> a 1/4" hole in my 3/4" shaft that must weaken the bronze shaft.
>
> John Boor
> MAHSEER #380
>
>
>
>> The reason that shafts are made with keyways is so that if you hit
>> something with enough force to shear the key, you shear the key
>> instead of breaking the shaft.
>>
>> Go to a boat show and look at rudder stocks, and I challenge you to
>> find one that is through-bolted. Nobody makes them this way and there
>> is a reason for that. They always have keys and the reason is so that
>> if you hit something you shear the key instead of breaking the shaft.
>>
>> Engine shaft couplings and propellers are made this way for the same
>> reason. Keys are easier and WAY cheaper to replace than shafts,
>> propellers, rudders, or other machinery.
>>
>> Bottom line: it is much cheaper to replace a key than to replace a
>> shaft. In the case of our rudder stock, you can take the head off with
>> a wrench in the cockpit. Imagine how much work it would be to replace
>> a bent or broken rudder shaft. It would require a haul-out for
>> starters. Not to mention the fact that the rudder stock is an integral
>> part of the rudder itself, so it would be a real pain to get it
>> separated from the rudder blade, have a new one made, and re-install
>> it.
>>
>> Do what you want, but for my money, I would see if you can fix the key
>> and/or head fitting. It's regrettable that you had a hard time getting
>> a new head from Edson, but that's nothing compared to what it would
>> take to replace a rudder stock.
>>
>> A key will not guarantee you won't bend or break a shaft, but it
>> certainly is a cheap insurance policy.
>>
>> That's my $0.02.
>>
>> Kind regards,
>>
>> J Bergquist
>>
>> On Sun, Oct 11, 2009 at 10:50 AM, Jonathan Budington
>> <jon at globalprinting.com> wrote:
>>> Ed,
>>>
>>> This sounds like my problem  Did you have any trouble getting the head
>>> off after the key slipped?  Any advice on drilling that hole?  Sounds
>>> like a permanent fix.
>>>
>>> Thanks,
>>>
>>> Jon
>>>
>>> -----Original Message-----
>>> From: public-list-bounces at lists.alberg30.org
>>> [mailto:public-list-bounces at lists.alberg30.org] On Behalf Of edward
>>> schroeder
>>> Sent: Sunday, October 11, 2009 10:26 AM
>>> To: Alberg 30 Public List -- open to all
>>> Subject: Re: [Public-List] Tiller Head
>>>
>>> On Emotional Rescue #303, I replaced the tiller head as it was also
>>> slipping. I discovered that the bronze key was not engaged
>>> sufficiently,
>>> or had abraded from a once-sufficient size, so that it did not engage
>>> the groove to take the shearing force.Also, the clamp on the aft side
>>> of
>>> the head did not grip sufficiently.
>>>
>>> However, when I purchased a new head from Edson, it too had the groove
>>> cut, not on center, so that it forced the tiller to be off-center. I
>>> sent two back to Edson before I received a straight head. Edson told me
>>> that they were cutting the grooves by hand and that "some could be
>>> slighly crooked". I was disappointed with there answer.
>>>
>>> I subsequently drilled a hole athwartship through the entire head and
>>> rudder post and inserted a 1/8 inch bolt and nut to take the shear
>>> force. Since then (5 years) we have had no trouble.
>>>
>>> Ed Schroeder
>>>
>>> --- On Sun, 10/11/09, Jonathan Budington <jon at globalprinting.com>
>>> wrote:
>>>
>>>
>>> From: Jonathan Budington <jon at globalprinting.com>
>>> Subject: [Public-List] Tiller Head
>>> To: "Alberg 30 Public List -- open to all"
>>> <public-list at lists.alberg30.org>
>>> Date: Sunday, October 11, 2009, 8:18 AM
>>>
>>>
>>> I was sailing last night - beautiful evening with about 12 knots of
>>> breeze.  We passed under the Bay Bridge, and we were hit by a 25 knot
>>> gust.  The boat wanted to head up, so I pushed down hard on the tiller.
>>> We reduced sail, but I noticed I was fighting to keep the boat on
>>> track.
>>> I realized that the to keep the boat on a straight course, I had to
>>> keep
>>> the tiller almost all the way over to the starboard side.  I made it
>>> back to Annapolis, but the last left turn into the slip was a real
>>> challenge.  I played with the tiller after we tied up; it seems to be
>>> in
>>> full control of the rudder, but way off center.  Could the head have
>>> slipped on the post?  Doesn't the post have a keyway to prevent this?
>>> Could it be something worse?
>>>
>>> Jon Budington
>>>
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