[C320-list] Keel Bolts

[Jim Dorsch]

Art is correct. If memory serves, the keel bolts are 1"-8 stainless steel. The 235 ft-lb value is about right for clean, dry threads. With a good antiseize grease like Loctite Moly 50, the torque is reduced to 100 ft lbs.  since stainless tends to gall. 

Don't torque lubricated bolts to 235 ft-Lb as you could actually break them!

If my memory is not correct let me know and I can provide revised values. 

Regards,
Jim Dorsch PE
Formerly Wind Goddess #840
Sent from my iPhone

> On Mar 28, 2017, at 4:37 PM, Art Harden <artstree at aol.com> wrote:
> 
> There is a torque recommendation based on the diameter and metal grade of the bolt. I have not looked at the chart in years but will see what I can find. It is based on the breaking strength of the bolt and varies based on thread size as well. As someone mentioned a lot goes into determining the torque value. 
> 
> Art Harden
> Tortuga Catalina 320
> 937-477-5544 (m)
> 
>> On Mar 28, 2017, at 6:42 PM, Allan S Field <allan.field at verizon.net> wrote:
>> 
>> The Association at a CA Rendezvous did a factory tour in August 2004 with Gerry.  I wrote an article following the tour and then ran it by Gerry to proofread before I put it out to the membership.  My memory is that at the factory tour, Gerry told us something less than 235 pounds but corrected the article to say 235.  
>> 
>> In March 2009 I sent Gerry an e-mail asking about lube to the threads but got no reply to that, at least that I can find.  Another member at that time (Lamar Desmond) had asked about the lube so I suggested he also call Catalina and then let me know what was said.  I don't think there was follow-up on that as I would have noted that with the toolbox loaner program literature.
>> 
>> -----Original Message-----
>> From: C320-list [mailto:c320-list-bounces at lists.catalina320.com] On Behalf Of Allan S. Field
>> Sent: Tuesday, March 28, 2017 6:24 PM
>> To: C320-List at Catalina320.com
>> Subject: Re: [C320-list] Keel Bolts
>> 
>>  That is not something Gerry went into with me...
>> 
>> 
>>  On 03/28/17, Chris Burti<clburti at gmail.com> wrote:
>> 
>>  There is a different schedule for torquing dry threads and dressed
>>  threads- higher torque for dry. This might be the reason for multiple
>>  numbers - different answers for different questions.
>>  Best Regards,
>>  Chris Burti
>>> On Mar 28, 2017, at 4:19 PM, Jeff Hare <[1]Catalina at thehares.com>
>>  wrote:
>>> 
>>> You might want to investigate the technique you'll use just a bit.
>>  You may not get an accurate torque on the keel nuts unless you are
>>  dealing with clean threads and a nut that turns freely against a clean
>>  surface. Be sure it isn't frozen by loosening the target nut first and
>>  inspecting the threads and giving the threads a shot of drylube or
>>  Moly-kote or other anti-galling grease before going for the actual
>>  torque value. Then move on to the next. You don't want to risk galling
>>  the threads, so some lubrication might be important. BUT I DON'T KNOW
>>  for sure.
>>> 
>>> These are my opinions, double check with someone who has a clue.
>>  ��
>>> -Jeff Hare
>>> 
>>> -----Original Message-----
>>> From: C320-list [[2]mailto:c320-list-bounces at lists.catalina320.com]
>>  On Behalf Of Bryan Morton
>>> Sent: Tuesday, March 28, 2017 1:43 PM
>>> To: [3]c320-list at lists.catalina320.com
>>> Subject: [C320-list] Keel Bolts
>>> 
>>> I had a follow up the keel bolt information from Allan Field from
>>  March 24th. I contacted Catalina directly on the Keel Bolt torque.
>>  Catalina told me the bolts should be torqued to 100 ft lbs. I was
>>  wondering where the 235 ft lbs number came from?
>>> 
>>> Best regards
>>> 
>>> Bryan 1994#32
>>> 
>>> "> Art - The Association, of which you are a member, has the torque
>>> wrench (250 pounds), appropriately sized keel bolt socket (1.5-inch,
>>> 6-point) and extension pieces available for loan through the toolbox
>>> program. The boat needs to be on the hard with at least 75% of the
>>> weight of the boat supported by the keel. The bolts get torqued to
>>  235
>>> foot pounds. To access the program, log-on to the website and submit
>>  a
>>> request. You only pay the outbound and return shipping charges! -
>>  Allan
>>> Field"
>>> 
>> 
>> References
>> 
>>  1. mailto:Catalina at thehares.com
>>  2. mailto:c320-list-bounces at lists.catalina320.com
>>  3. mailto:c320-list at lists.catalina320.com
>> 
>