[Public-list] Masthead Sheave
Mike Lehman
sail_505 at hotmail.com
Tue Aug 1 09:58:02 PDT 2006
Direct measurements are always the best. I think the bolts should be 5/8"
and if anyone has a 1/2" hole they should 'upgrade' to a larger bolt. I will
take 2, confirmed.
Mike Lehman
~~~_/)_/)~~_/)~~~
----Original Message Follows----
From: "Cole, Andrew L" <andrew.cole at llff.com>
Reply-To: Alberg 30 Public List -- open to all <public-list at alberg30.org>
To: <public-list at alberg30.org>
Subject: [Public-list] Masthead Sheave
Date: Tue, 1 Aug 2006 12:07:09 -0400
Mike,
Good point. I pulled the measurements of a blueprint on the website
that shows a 1/2" hole. There is another set of measurements in the
maintenance section that shows photos of an aluminum sheave with a
5/8ths hole, which is confirmed by your measurements.
Unless there is outcry, I will change the spec to 5/8 holes (this seems
to be the more-correct spec). If there are any 1/2 inch bolts out
there, they could be retrofitted by just drilling out the hole 1/8
larger and replacing the bolt.
Andrew
>>Andrew,
>>I have 2 sheaves at home. 1. really old, phenolic, from and older A30,
and
>>2. an aluminum sheave from hull #567. Both are original A30 sheaves.
Both
>>are in reasonable condition. Both have 5/8" center holes without
showing any
>>elongation from wear. Your specs are for .5" center holes. Given this,
I
>>believe the center axel is 5/8". I still want 2 of the new ones, but
how did
>>you come up with the .5" center hole? Can you double check that? All
of the
>>other dimensions are good.
>>Mike Lehman
>>~~~_/)_/)~~_/)~~~
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