[Public-list] Masthead Sheave

[Mike Lehman]

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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