[Public-List] To Gord, Mike, Joe B and the rest of the smart guys
Gordon Laco
mainstay at csolve.net
Sat Sep 1 14:47:16 PDT 2018
150’ of chain allows us to anchor with security in up to 30’ of water; that’s 5:1 scope.… that’s not very deep, all things considered. When using mostly rope for an anchor cable, the recommended ratio is 7:1
When considering ground tackle… more is always better.
Gordon Laco
www.gordonlaco.com
> On Sep 1, 2018, at 5:41 PM, Joseph Balderson via Public-List <public-list at lists.alberg30.org> wrote:
>
> 150' of 1/4" chain. Thats a lot of wt fwd. Why so much chain?
>
> On Mon, Aug 27, 2018, 4:48 PM Gordon Laco via Public-List <
> public-list at lists.alberg30.org> wrote:
>
>> Hi there -
>>
>> I need to offer a correction to the descriptions… the length of the chain
>> is 150’, not 200’ as I wrote…
>>
>> Gordon Laco
>> www.gordonlaco.com
>>
>>
>>
>>
>>> On Aug 27, 2018, at 3:12 PM, George Dinwiddie via Public-List <
>> public-list at lists.alberg30.org> wrote:
>>>
>>> Gord, your new photographs are now added to
>> http://www.alberg30.org/maintenance/DeckGear/BowrollerOnSurprise/
>>>
>>> - George
>>>
>>> On 8/27/18 8:26 AM, Gordon Laco via Public-List wrote:
>>>> Good morning friends -
>>>> I’ve sent George a couple of photographs of SURPRISE’s anchor roller
>> set up with the Bruce anchor we currently use in place. I took the photos
>> last evening after supper.
>>>> Anticipating questions about the actual piece of kit I installed… here
>> is a detailed description.
>>>> The roller assembly is an obsolete Ronstan fitting which I found in the
>> sale bin of one of the boatyards I supply. That’s the bad news. The good
>> news is that there are others currently made which I am sure would serve
>> equally well - perhaps better - because I had to modify the one I’ve got in
>> order to make it work.
>>>> I had the base extended by four inches by means of a 1/4” thick
>> stainless steel plate welded to the base. My intention was to give the
>> fitting deeper reach aft so that I could secure it with five studs, which I
>> drove into drilled and tapped holes in my bow casting.
>>>> As I’ve written earlier, I wish I had made the extension one or two
>> inches longer, so that there was no possibility of the anchor contacting
>> the bow when it’s being hoisted that last bit onto the roller for stowage.
>> As things stand, it rarely touches, but from the marks on the bow I see
>> it has indeed touched three times over the years; and that’s not bad.
>>>> I value the way the setup stand mainly because it is very short, so
>> maximizes the strength of the whole deal. I like how it holds the anchor
>> very securely when we’re sailing, and I also like how unobtrusive it is
>> with regard to aesthetics.
>>>> The roller itself is aluminium… in the 18 years it has had our chain
>> running back and forth over it, the chain has worn the softer metal. I’m
>> thinking of looking for a delrin roller to replace the aluminium one… I
>> expect that will be on this winter’s list. If I can’t find one off the
>> shelf, I’ll have one made at our local machine shop.
>>>> Gordon Laco
>>>> Surprise 426
>>>>> On Aug 26, 2018, at 11:10 AM, Marcelo D. Gentinetta via Public-List <
>> public-list at lists.alberg30.org> wrote:
>>>>>
>>>>> Good morning,
>>>>> My boat’s bow roller and anchor set up is pictured on the A30 website
>> under her previous name Sally B. I felt that the bow platform as built by
>> the previous owner was too long and hence weaker than I would like to be. I
>> ended up cutting 8 inches off the end and remounting the bow roller closer
>> inboard. It has gained much more strength this way. I have a 10kg Rocna on
>> it now.
>>>>>
>>>>> Marcelo
>>>>> #441
>>>>>
>>>>>> On Aug 25, 2018, at 4:31 PM, George Dinwiddie via Public-List <
>> public-list at lists.alberg30.org> wrote:
>>>>>>
>>>>>> Gord,
>>>>>>
>>>>>> Are these the photos you mean?
>> http://www.alberg30.org/maintenance/DeckGear/BowrollerOnSurprise/
>>>>>>
>>>>>> - George
>>>>>>
>>>>>> On 8/25/18 4:50 PM, Gordon Laco via Public-List wrote:
>>>>>>> Hello Gents - ‘
>>>>>>> I am of the tribe that believes that the anchor roller needs to be
>> as small and short as possible… for reasons of strength, utility and
>> aesthetics.
>>>>>>> The shorter the lever arm you build into the fitting, the stronger
>> it will be where it interfaces with your bow and deck. We should always
>> bear in mind that when our boats were designed and built, nobody imagined
>> that long sprit-like anchor davits would be cantilevered out there.
>>>>>>> With all that in mind, I fitted one to SURPRISEs bow… I wish I had
>> made it one inch longer, which would have made it impossible for the tip of
>> the Bruce we currently carry up there to contact the stem, but no matter…
>> the bow fitting we have is immensely strong and quite inconspicuous… and in
>> 9 anchors aweigh out of 10, the tip of the fluke doesn’t touch the bow.
>>>>>>> John, I’ll send photos to you…and anyone else who asks.
>>>>>>> Cheers -
>>>>>>> Gordon Laco
>>>>>>> #426 Surprise
>>>>>>> PS - my sons and I are convening a meeting of the
>> Midland-Penetanguishene Cultural Appreciation Society in order to view the
>> remake of ‘Papillon’, reputed by reviewers to be more brutally violent than
>> the original starring Steve McQueen. Mom is staying home.
>>>>>>>> On Aug 25, 2018, at 4:43 PM, John Johnston via Public-List <
>> public-list at lists.alberg30.org> wrote:
>>>>>>>>
>>>>>>>> I am in the process of mounting a new self-deploying bowroller on
>> # 69, and what I have come up with is a 1/2” aluminum fabricated piece that
>> rests on the existing bronze bow fitting, with a 316 bowroller atop of
>> that, the aluminum extending aft far enough to attach through a “ bridge”
>> that can be throughbolted through the deck with a mounting plate beneath.
>> At the bow the aluminum will be drilled and then the bowroller will be
>> fastened through the aluminum and into tapped holes in the bronze. There is
>> room for one through bolt to gain purchase. It will certainly be strong
>> enough on Day 1, but am I building a sandwich of dissimilar metals that is
>> doomed to fail? I suspect that the bolts strapping it together would be
>> bronze, because that would be the material I am threading into, but I have
>> a growing sense that the design might be ill-considered. Perhaps the
>> sandwiched piece between bronze and stainless would better be wood? Advice
>> would be very welcome, not the least because the aluminum piece is due to
>> be fabricated from a template I made, and the cost of that is not at all
>> negligible. Especially if it don’t work. I look forward to hearing from the
>> Alberg Brain Trust. Thanks!
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>>>>>> --
>>>>>> ----------------------------------------------------------------------
>>>>>> When I remember bygone days George Dinwiddie
>>>>>> I think how evening follows morn; gdinwiddie at alberg30.org
>>>>>> So many I loved were not yet dead, http://www.Alberg30.org
>>>>>> So many I love were not yet born. also see:
>>>>>> 'The Middle' by Ogden Nash http://idiacomputing.com
>>>>>> ----------------------------------------------------------------------
>>>>>>
>>>>>>
>>>>>>
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>>>>>
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>>> --
>>> ----------------------------------------------------------------------
>>> When I remember bygone days George Dinwiddie
>>> I think how evening follows morn; gdinwiddie at alberg30.org
>>> So many I loved were not yet dead, http://www.Alberg30.org
>>> So many I love were not yet born. also see:
>>> 'The Middle' by Ogden Nash http://idiacomputing.com
>>> ----------------------------------------------------------------------
>>>
>>>
>>>
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>>
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