Re: RE: [omc-boats] venting the cowling

I am at the same point and hull is "empty" I have some good photos as well. I did it early this summer then well you know ....time flies.... Anyway I am thinking 4 lb as well. I just want to be sure as my 14' has no structural stringers only the foam and floor. It is an outboard so that may make a difference in the original design and the need for floor stringers.

Tom
>
> From: Greg Van Vliet <gvanvliet@...>
> Date: 2006/09/13 Wed PM 12:35:12 EDT
> To: "'omc-boats@...'" <omc-boats@...>
> Subject: RE: [omc-boats] venting the cowling
>
> Tom,
>
> I've just done the same thing. I separated the top deck from the hull and
> then stripped everything off. My floor was absolutely rotten to the point
> of crumbling into little bits when I tried pulling it up. I ended up using
> a flat shovel for most of it. The foam underneath was cracked in many
> places. It wasn't heavily saturated with water, but it had "layers" of
> water in areas and "spots" where there had been fasteners in the floor. I
> even ended up cutting open the top of the stringers to remove the foam
> because they had some water inside as well. There was a layer about 1/2"
> thick on most of the sides and bottom.
>
> Right now my hull is completely empty of any foam. It's very flexible in
> this state and I can see how the foam is integral to it's structural
> design. I'm researching in my area for foam product and technique options
> as well as plywood. There's a fibreglass shop next door to my work so I'm
> going to go and pay them a visit. I might be lucky and get a deal for them
> to do the foaming and glassing work. At the least I should get some good
> advice.
>
> Here's a link to the foam that David Hanson used for his project. We need
> the 4lb foam due to the structural requirements.
> http://www.shopmaninc.com/foam.html
>
> BTW - I have taken a lot of pictures of the work so far. When it's all
> done I might have a good collection to send to Phil for a "Floor and foam
> replacement gallery".
>
> Regards,
> Greg
>
> -----Original Message-----
> From: Tom Paquette [SMTP:tpaquette@...]
> Sent: Tuesday, September 12, 2006 5:10 PM
> To: omc-boats@...
> Subject: RE: [omc-boats] venting the cowling
>
> David,
>
>
>
> I do have a question then that you maybe able to answer.
>
>
>
> Do you know what density of foam was used/should be used. Under the floor?
>
>
>
> I have stripped the hull clean and am trying to figure out if I need 4 lb
> foam or what.
>
>
>
> Thanks!!
>
>
>
> Tom
>
> Charlotte, NC
>
>
>
> _____
>
> From: owner-omc-boats@... [mailto:owner-omc-boats@...] On
> Behalf Of David
> Sent: Tuesday, September 12, 2006 2:46 PM
> To: omc-boats@...
> Subject: Re: [omc-boats] venting the cowling
>
>
>
> No, I was not an engineer - I assembled prototypes, worked on molds to
> build
> prototype hulls etc. then took them out for testing etc. very interesting
> job but I was there for only a year - then got married and moved away - but
> at least I got all the training etc. - even have my Certified OMC
> Mechanic's
> certificate. Dave
>
> jdood wrote:
>
>
>
> Wow - so you were an engineer at OMC back in the day?! I love this list!
> (I have so many questions about my boat.....in time).
>
>
>
> -----Original Message-----
> From: owner-omc-boats@... [mailto:owner-omc-boats@...] On
> Behalf Of David
> Sent: Tuesday, September 12, 2006 8:57 AM
> To: omc-boats@...
> Subject: Re: [omc-boats] venting the cowling
>
>
>
> Probably never noticed it - during my stint in engineering at OMC I ran a
> lot of hours testing on Lake Michigan - there were several other OMC's out
> on endurance that ran everyday - I do not recall ever seeing anyone run
> with
> the engine cover off - so it is likely no one ever had the chance to notice
> the difference - Dave
>
> jdood wrote:
>
>
>
> So if the engine runs better with vents, now I am wondering why they
> didn't put them in originally? Noise? Or is there some special
> marine/safety issue with venting it?
>
> -----Original Message-----
> From: owner-omc-boats@... [mailto:owner-omc-boats@...]
> On Behalf Of David
> Sent: Tuesday, September 12, 2006 6:21 AM
> To: omc-boats@...
> Subject: Re: [omc-boats] venting the cowling
>
> It wouldn't hurt anything to put a vent in - but I think I would put it
> on the port side of the cowling - where the carb is located since you
> wouldn't see it there - Dave
>
> jdood wrote:
>
>
>
> I have a 65 omc deluxe i/o that I know little about. I have been
> finding that it seems to be running better without the cowling on the
> engine. Perhaps my imagination, but I don't think so. So did those
> cowlings ever have vents in that nice flat section of the front that
> seems perfect for a vent grill? Would I be screwing anything up to put
> one in there? Those little grills in the back seem kind of useless.
>
> Thanks for any comments!
>
> jeff
>
>
>
>
>
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Received on Wednesday, 13 September 2006