[Public-List] Mast beam almost finished!

[John Boor]

When I did #380 it was fastened with 1/4" X 6" bolts.  When I removed them
there was a distinct bend in shear where the bolt exited the bulkhead.

John Boor
previous owner #380 MAHSEER

> I had the same problem when I replaced my beam.  SS 1/4" bolts only come
> in 4" or 5" lengths. Anything longer is either 5/16 or 3/8, so they had
> to,drill half way to put nuts on.  Cant remember for sure but I think I
> had to go with 5/16" to reach the bottom of the beam, or maybe special
> order 1/4 x 6" bolts...
>
> Gpb
>
> Sent from my iPad
>
> On Oct 26, 2013, at 4:57 PM, Mike Lehman <sail_505 at hotmail.com> wrote:
>
>> I believe that one of the problems with the original bolts was that
>> Whitby drilled VERY deep countersinks for the nuts on the bottom of the
>> beam. The ones I have seen were drilled about 1/2 way thru the beam and
>> the holes are on the worst possible location where the main downward
>> force is applied. The main contributing factor to beam failure was the
>> glue failed.



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