[C38] Fwd: why the footblock?
Don Strong
drstrong at ucdavis.edu
Mon Jan 16 14:16:34 EST 2006
>
>
>List: Why the footblock? Don
>
>At 10:24 AM 01/16/2006, you wrote:
>>Hi Don,
>>Thanks for the photo. What's the main advantage of using this foot blocks
>>instead of leading the line straight from the lead car to the winch???
>>
>>
>>>From: Don Strong <drstrong at ucdavis.edu>
>>>To: maxsoto at hotmail.com
>>>Subject: jibsheet footblocks
>>>Date: Mon, 16 Jan 2006 09:20:39 -0800
>>>
>>>Max: For all headsails. The sheet does a 180 degree turn and goes
>>>forward to the big winch.
>>>don
>>>
>>>
>>>59988dd.jpg
>>>
>>>At 07:23 AM 01/16/2006, you wrote:
>>>>Hi guys,
>>>>
>>>>I didn't know that this boats came with footblocks. At least mine doesn't,
>>>>unless they have been removed by PO. What are they used for, with the
>>>>spinnaker or large genoa?????
>>>>Where exactly are they located??
>>>>
>>>>thanks
>>>>
>>>>Maxs Soto
>>>>C38 #198 ESTANCIA
>>>>Puntarenas, Costa Rica
>>>>
>>>> >From: Don Strong <drstrong at ucdavis.edu>
>>>> >Reply-To: Catalina 38 Listserve <Listserve at catalina38.org>
>>>> >To: Catalina 38 Listserve <Listserve at catalina38.org>
>>>> >Subject: Re: [C38] repair or replace jibsheet footblocks?
>>>> >Date: Mon, 16 Jan 2006 06:56:29 -0800
>>>> >
>>>> >Tom: Very interesting. I had not thought that a replacement sheave
>>>> would be
>>>> >available. I would still have the issue of having to go below to turn the
>>>> >nuts, holding the bolts from above. The footblock bolts through; no
>>>> sheave
>>>> >or top removal w/out removing the whole tamale. I wonder about
>>>> >reengineering the block, fix the bolts from below so no wrench required
>>>> >down there, bolts perfect lengths, nuts above (opposite of what came with
>>>> >the boat, nuts down). Rich West reminded me that Garhauer engineers stuff
>>>> >for close to their stock cost, and I'm going to call them to see if I
>>>> could
>>>> >get new blocks with my bolt pattern. Don
>>>> >
>>>> >
>>>> >At 05:28 PM 01/15/2006, you wrote:
>>>> > >Hello Don,
>>>> > >
>>>> > >I'm not sure I'm understanding your problem with the sheaves. I
>>>> rebuilt
>>>> >my
>>>> > >mainsheet blocks by drilling out the stainless rivets and replacing the
>>>> > >sheaves with Harkin sheaves I ordered through West Marine via the
>>>> Harkin
>>>> > >catalog. I don't know if your jib sheet blocks are similar.
>>>> > >
>>>> > >Instead of replacing the original rivets that held the bushings and
>>>> >sheaves
>>>> > >I just used a 1/4" stainless bolt and a nylock nut to secure the
>>>> sheaves.
>>>> > >Since the new sheaves have a center race, there is no need for
>>>> perfection
>>>> > >on the bolt surface.
>>>> > >
>>>> > >I can now dismantle the blocks to clean, lubricate or replace the
>>>> roller
>>>> > >sheaves. There is no comparison to the effort on the sheets using the
>>>> >new
>>>> > >roller sheaves. When Schaefer made our blocks, using bushings was the
>>>> >norm
>>>> > >but today there are many companies using roller sheaves and some
>>>> >companies
>>>> > >like Harken make the new sheaves available as rebuild replacements.
>>>> > >
>>>> > >Good luck,
>>>> > >Tom Troncalli
>>>> > >The Renata #95
>>>> > >St. Pete, FL
>>>> > >
>>>> > >
>>>> > >
>>>> > >
>>>> > > > [Original Message]
>>>> > > > From: Don Strong <drstrong at ucdavis.edu>
>>>> > > > To: <Listserve at catalina38.org>
>>>> > > > Date: 1/15/2006 12:44:48 PM
>>>> > > > Subject: [C38] repair or replace jib sheet footblocks?
>>>> > > >
>>>> > > > Dear C38list:
>>>> > > > The Schaefer jibsheet footblocks on Discreet charm are hurtin'.
>>>> >The
>>>> > > > bushings have deformed, which causes the sheave to bind and
>>>> freeze on
>>>> >the
>>>> > > > heavy SS axle.
>>>> > > > I have had them apart and see that one course would be to
>>>> >find a
>>>> > > > machine shop that would push out and replace the bushings. This
>>>> would
>>>> > >take
>>>> > > > a day or so of messing about to find the right machine shop; Ill bet
>>>> >it
>>>> > > > would cost $50 bucks or more per block.
>>>> > > > An alternative seems to be Garhauer's FB-04SB, length 8"
>>>> >width 3
>>>> > > > 3/4", bolt diameter 3/8", height 1 1/8", cost $104.79
>>>> > > > Ill be that I would have to redrill the bolt holes with this option.
>>>> >Not
>>>> > > > fun on the port side where the refrigerator compressor has been
>>>> >mounted
>>>> > > > right under the rail and the foot block. Ill probably have to
>>>> drop the
>>>> > > > compressor to redrill the footblock bolt pattern.
>>>> > > > Ive emailed Catalina but no response yet. The Schaefer
>>>> > > > replacements cost lots more than the Garhauer ones.
>>>> > > >
>>>> > > > Any suggestions appreciated.
>>>> > > >
>>>> > > > Don
>>>> > > >
>>>> > > >
>>>> > > >
>>>> > > >
>>>> > >....................................................................
>>>> ... .....
>>>> > >..........................................
>>>> > > > Donald R. Strong
>>>> > > > Catalina 38 #50 1980
>>>> > > > Discreet Charm
>>>> > > > Davis, Ca
>>>> > > > Phone, 530 752-7886
>>>> > > >
>>>> > > >
>>>> > > >
>>>> > > > _______________________________________________
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>>>> > > > Listserve at catalina38.org
>>>> > > > http://catalina38.org/mailman/listinfo/listserve_catalina38.org
>>>> > > >
>>>> > > >
>>>> > > > --
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>>>> > >
>>>> > >
>>>> > >
>>>> > >_______________________________________________
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>>>> >
>>>> >......................................................................
>>>> ... .............................................
>>>> >Donald R. Strong
>>>> >Professor
>>>> >Section of Ecology and Evolution
>>>> > and
>>>> >Bodega Marine Laboratory
>>>> >Division of Biological Sciences
>>>> >University of California, Davis 95616
>>>> >Phone, 530 752-7886
>>>> >Fax , 530 752-1449
>>>> >
>>>> >
>>>> >_______________________________________________
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>>>>
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>>>
>>>......................................................................................................................
>>>Donald R. Strong
>>>Professor
>>>Section of Ecology and Evolution
>>> and
>>>Bodega Marine Laboratory
>>>Division of Biological Sciences
>>>University of California, Davis 95616
>>>Phone, 530 752-7886
>>>Fax , 530 752-1449
>>><< 59988dd.jpg >>
>>
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>
>......................................................................................................................
>Donald R. Strong
>Professor
>Section of Ecology and Evolution
> and
>Bodega Marine Laboratory
>Division of Biological Sciences
>University of California, Davis 95616
>Phone, 530 752-7886
>Fax , 530 752-1449
......................................................................................................................
Donald R. Strong
Professor
Section of Ecology and Evolution
and
Bodega Marine Laboratory
Division of Biological Sciences
University of California, Davis 95616
Phone, 530 752-7886
Fax , 530 752-1449
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