[frers-list]to Art Kelley
Courtney Thomas
frers-list@lists.frers33.com
Fri, 26 Apr 2013 09:39:45 -0400
On 4/25/2013 5:55 PM, Arthur Kelley wrote:
> Courtney,
>
> Apologies for the delay on this. Had not located the final paperwork,
> and wanted to write more about it than I could on my phone.
>
> For mine, I used a 4" lower bearing and a 2.5" upper bearing.
>
> I would consider doing the upper bearing differently.
>
> The lower bearing was simply press-fit into the tube. The old one
> slid out very easily (too easily). Using the dry ice press fit method
> for the lower bearing worked like a charm. Provide the vendor a very
> carefully measured inside diameter of the tube and outside of the
> shaft and they will calculate the size to machine to to press fit. My
> measurements were:
> Housing: 3.025"
> Shaft: 2.490"
> Bearing ID: 2.511" +/- 0.0025"
> Bearing OD: 3.033" +/- 0.003"
> Bearing Length: 4"
> Digital verniers for measurement are really simple to use and
> inexpensive these days if you've never worked with a vernier or dial
> calipers. You need to measure to thousandths of an inch.
>
> On my boat the upper bearing was a thin coating of green teflon type
> material inside a fiberglass tube, which was glassed directly into the
> deck. I used a hole saw to cut out the old tube then secured the upper
> as best as I could with resin. Messy job that involved scoring the
> outside of the bearing to give the resin something to grip. The upper
> was therefore, not press fit, but basically glued in place. I used
> the same diameters for the upper as I had the lower which was not
> optimal since I ended up not press fitting it.
>
> I probably should have gotten a piece of fiberglass rudder tube (Tides
> Marine) of the diameter of the lower one, press fit the bearing into
> that, then glassed the whole assembly in place using the rudder shaft
> (or some substitute) to ensure alignment.
>
> Today, I would also consider one of the Tides Marine URB units, but I
> have no experience with these. Maybe someone else here does.
>
> I also had 2 washers made at the same time because I had an oddball
> tiller head arrangement at the time. My boat was originally shipped
> with a wheel, converted to a tiller, and then I refit to a wheel.
>
> Shipping on the vesconite bearings from South Africa was just about
> the same cost as the product itself. My total cost in 2003 including
> DHL shipping, was $122.
>
> Art
>
>
> ----- Original Message ----- From: "Courtney Thomas"
> <courtneycthomas@bellsouth.net>
> To: <frers-list@lists.frers33.com>
> Sent: Tuesday, April 23, 2013 10:20 AM
> Subject: [frers-list]to Art Kelley
>
>
>> Art,
>>
>> Just read your rudder bearing replacement summary (thank you) and
>> have a couple questions:
>>
>> what was the bearing length of the upper, please ? You give the lower
>> as 2.5" but no length
>> on the upper, and since mine is entirely missing.....
>>
>> and.... for diameters did you simply give Vesconite the ID of the
>> tube(s), the OD of the rudder stock, or what ?
>>
>> I'm obviously tryin' to order and want to avoid custom fabrication or
>> wrong ordering, etc..... :-)
>>
>> Appreciatively,
>>
>> Courtney
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Art,
Thank you so much ! Certainly no need for apologies :-)
Cordially,
Courtney