[alberg30] More Bow Chocks- but newer

[Tom Sutherland]

From: Tom Sutherland <tomsu at uky.campuscw.net>

Joe,
    As you may know, my boat #412 (1970) had this same arrangement. When I
got the boat the chocks had already been moved back to the toe rail to allow
for the "bow roller". I would suggest that you try a good penetrating product
and let it set overnight. I would then employ the use of an "Impact Driver".
This device , when struck with a hammer , will produce both a downward and
twisting force at the same time. Be patient and try to determine if the screw
is moving even the slightest amount,  apply a bit more penetrant and let soak
a bit more. If at this point ,  you  detect *no*  movement , a bit of heat
might be beneficial. In that the SS and Alum. should expand and contract at
different rates this could help .... I do not think you will apply enough
heat by playing the frame of a propane torch to be a problem ... be prudent.

    If this fails you could drill off the screw heads , pry off the chocks
and try to grip the protruding screws with "vice grips" ... as a last result
you could cut off flush with the stem peace.

    For what it is worth , the holes which remain in my stem fitting look to
be about a 1/4-20 SAE thread.

Tom S




alberg30 wrote:

> From: "alberg30" <alberg30 at planet.net>
>
>
>
> Question: How do I unscrew these bow chocks from the nose piece?---they're
> stuck. I expect the screws are stainless steel and have "bonded" with the
> aluminum. I am pretty sure they are not thru bolted through the nose piece
> and into the deck. I expect they are similar to the machine screws/bolts
> used to seat the mast the in the mast step.
>
> Should I try a penetrating oil? Or maybe a little heat? Will I melt the
> aluminum around the screws?
>
>
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