The only thing I had close to 1-13/16 was 1-7/8 which seemed to fit the #5
bolt and it was only best measured as a 1-1/4" stud.
#1 and #7 match, measuring 1" and fit 1-1/2 socket.
Here's the latest chart (* denotes unchecked)
Keel bolts (fwd to aft):
Nut stud
1 - 1 1/2 (38mm) 1 (25mm)
2 - 2 3/16 (56mm) 1 1/2 (38mm)
*3 - 2 1/4 (57mm) 1 1/2 (38mm)
4 - 2 3/16 (56mm) 1 1/2 (38mm)
5 - 1 7/8 (47.5mm)1 1/4 (32mm)
*6 - 2 1/4 (57mm) 1 1/2 (38mm)
7 - 1 1/2 (38mm) 1 (25mm)
*8 - 3/4 (19.5mm) 1/2 (13mm)
Josh
On Jan 13, 2018 7:36 PM, "Ken Heaton via CnC-List" <[email protected]>
wrote:
Hi Josh,
So what size was bolt #7 on Sea Hawk? Mine (I think) is actually
a 1-13/16" nut, 1-1/8" stud, torqued to 400 lbs.
Curious minds...
Ken H.
On 13 January 2018 at 20:00, Josh Muckley via CnC-List <
[email protected]> wrote:
> So two (#2&4) of the largest bolts fit the 2-3/16ths socket (tight) and
> two (#3&6) don't. I remeasured and sure enough the ones I can reach are
> 56mm and 57mm. Looks like I'll be buying an additional socket... 2-1/4! I
> should have heeded Ken's advice more closely.
>
> What are the chances they used different size studs/nuts verses the
> chances that the tolerances on the nuts simply allows a 2-3/16 socket to
> fit a 2-1/4 nut?
>
> Josh Muckley
> S/V Sea Hawk
> 1989 C&C 37+
> Solomons, MD
>
>
>
> On Jan 2, 2018 3:40 PM, "Ken Heaton" <[email protected]> wrote:
>
>> Hi Josh,
>>
>> I've continued to use 600 lbs for the 1.5" bolts as I've re-torqued them
>> occasionally. I've used a 2-1/4" socket for those but the 2-3/16" you
>> listed may be a better fit, I'm not sure.
>>
>> I think bolt #7 is actually a 1-13/16" nut, 1-1/8" stud, torqued to 400
>> lbs. Perhaps you should double check that one to be sure?
>>
>> I've needed to use a 1-1/2" Deep Socket on # 1 as it is a longer stud to
>> allow two nuts to sandwich a washer with a stud welded on for a grounding
>> cable from the mast step.
>>
>> The other values you've listed (and the tef-gel) are what I've used
>> before.
>>
>> Ken H.
>>
>> On 2 January 2018 at 16:18, Josh Muckley via CnC-List <
>> [email protected]> wrote:
>>
>>> Ok Guys,
>>> Since I have the mast out, this provides the rare opportunity to access
>>> ALL of the keel bolts. I've measured each of the bolt and nut diameters
>>> and checked the archives for torque specs. I intend to buy a toque
>>> multiplier and the appropriate sized sockets. I think I can do it for less
>>> than the yard is going to charge and I'll come out of it with some tools.
>>> I'll also be able to tell myself that it was done correctly.
>>>
>>> That being said it sounds like the best practices are are follows:
>>> - be on the hard
>>> - loosen the bolts one at a time, clean, and lubricate with tef-gel
>>> - reinstall and torque at progressively higher levels.
>>>
>>> I was unable to find the torque spec for my 1.5" bolt in the website but
>>> Ken Heaton cited 600lbs in one of his past responses.
>>>
>>> Keel bolts (fwd to aft):
>>> Nut stud torque
>>> 1 - 1 1/2 (38mm) 1 (25mm) 350
>>> 2 - 2 3/16 (56mm) 1 1/2 (38mm) 600?
>>> 3 - 2 3/16 (56mm) 1 1/2 (38mm) 600?
>>> 4 - 2 3/16 (56mm) 1 1/2 (38mm) 600?
>>> 5 - 1 7/8 (47.5mm)1 1/4 (32mm) 450
>>> 6 - 2 3/16 (56mm) 1 1/2 (38mm) 600?
>>> 7 - 1 1/2 (38mm) 1 (25mm) 350
>>> 8 - 3/4 (19.5mm) 1/2 (13mm) 80
>>>
>>>
>>> *Anything I'm missing?*
>>>
>>>
>>> Thanks,
>>>
>>> Josh Muckley
>>> S/V Sea Hawk
>>> 1989 C&C 37+
>>> Solomons, MD
>>>
>>> _______________________________________________
>>>
>>> Thanks everyone for supporting this list with your contributions. Each
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>>>
>>>
>>
> _______________________________________________
>
> Thanks everyone for supporting this list with your contributions. Each
> and every one is greatly appreciated. If you want to support the list -
> use PayPal to send contribution -- https://www.paypal.me/stumurray
>
>
>
_______________________________________________
Thanks everyone for supporting this list with your contributions. Each and
every one is greatly appreciated. If you want to support the list - use
PayPal to send contribution -- https://www.paypal.me/stumurray
_______________________________________________
Thanks everyone for supporting this list with your contributions. Each and
every one is greatly appreciated. If you want to support the list - use PayPal
to send contribution -- https://www.paypal.me/stumurray
