Re: [OMC-Boats] 67 Explorer Foam

From: lks@...
Date: Thu, 30 Oct 2008 08:25:18 -0600

The other slight concern in the area of the enginge compartment floor is the
structural integrity.

The name "Stringer" comes from the fact that the engine uses four floor
mounts. The mounts are tied into the underfloor two stringers that run the
length of the boat offset approximately a foot either side of the keel. The
integrated topdeck motor compartment does make getting at this very
difficult, as opposed to the earlier (64-67 model year) Sportsmans which had
the removeable engine compartment bulkhead.

Your "Cab Forward" Explorer is either a 1969 or 1970 model year, (these were
the last designs offered by OMC). You boat uses the 4-inch deeper deadrise
hull which was introduced on all 1969 16-footers. It IS a great design by
Ralph Lambrecht, who was chief engineer in charge of boat manufacturing and
later was in charge of sterndrive manufacturing in the seventies.

Lee Shuster

----- Original Message -----
From: "Thomas Klauber" <tklauber@...>
To: <omc-boats@...>
Sent: Thursday, October 30, 2008 6:34 AM
Subject: [OMC-Boats] 67 Explorer Foam

> The foam is "closed cell foam" meaning it should not take water into the
> little bubbles of foam (for lack of a better explanation) and become
> waterlogged. The question arises how much water is logged into the floor
> of your boat and no one can answer that without removal of the foam. I
> would GUESS that there are a couple gallons of water in there which
> translates into added weight. That probably is no problem except when you
> close that all up will you get rot to the undersurface or your wood?
> Probably not in your lifetime. I had similar condition with my Rogue and
> refoamed the floor with a two part foam that is like the original foam and
> is easy to get - the process is tedious and I am not sure worth all the
> effort. The foam under the engine compartment can't realistically be
> reached without taking the 2 boat halves apart The foam is necessary for
> floatation in case of catastrophy and also provides hull stabiltiy and
> deadens sound. My hull also had longitudinal stringers embedded in the
> foam - these had some rot at their forward ends. You can dig around in the
> foam and tell somewhat how much water is in there. I think the center
> locker is a good idea. I have always liked that helm forward design.
> TK----- Original Message -----
> From: <omc-boats-request@...>
> To: <omc-boats@...>
> Sent: Wednesday, October 29, 2008 12:00 PM
> Subject: OMC-Boats Digest, Vol 18, Issue 6
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>> Today's Topics:
>> 1. '67 Evinrude Explorer (forward helm) (BLDFW)
>> ----------------------------------------------------------------------
>> Message: 1
>> Date: Tue, 28 Oct 2008 17:18:08 -0700 (PDT)
>> From: BLDFW <bldfw@...>
>> Subject: [OMC-Boats] '67 Evinrude Explorer (forward helm)
>> To: omc-boats@...
>> Message-ID: <257332.65775.qm@...>
>> Content-Type: text/plain; charset="iso-8859-1"
>> I recently came into posession of a '67 Evinrude Explorer.? I saw one one
>> time as a kid and through I could not remember the name or make, I
>> distinctly remember the far forward helm.? This one has the V6 and OMC
>> outdrive.?
>> ?
>> Anyway, I am replacing the rear flooring deck.? The flooring was rotted
>> out at the rear in front of the engine compartment so I opted to remove
>> the entire rear deck from the plastic helm riser to the engine
>> compartment (about 76") and replace it with fresh resined decking.? I've
>> redesigned it use the center below deck space and have?installed?a center
>> below floor storage locker.?
>> ?
>> Question:? Aside from the decking and the upper rear most?vertical
>> corners of the 1/2 plywood containing?the styrofoam on each side, the
>> boat is seems pretty solid.? I'm not sure how long it's been out of the
>> elements but the foam feels slightly damp in various places.? I think the
>> plywood further rear of the decking?on both?the port and starboard side
>> of the engine might be damp and somewhat degraded but it is under the
>> rear seats and engine compartment cover so do I need to be concerned???I
>> can't really do much about it without removing the entire top of the
>> boat.? Will the foam eventually dry out?
>> ?
>> Thanks.
>> ?
>> Bill
>> Dallas, TX
>> --- On Mon, 10/27/08, omc-boats-request@...
>> <omc-boats-request@...> wrote:
>> Today's Topics:
>> 1. Sport Fisherman (Thomas Klauber)
>> The boats have a lot of styrofoam under the deck and this can get
>> waterlogged if left out in the elements. The
>> wooden components of the hull will rot allowing this water to get under
>> the
>> deck into the foam.
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Received on Thursday, 30 October 2008

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