[Public-List] [EXTERNAL] Public-List Digest, Vol 3916, Issue 2

Thu Sep 12 13:40:42 PDT 2019

Folks,

The engine runs at about 180 F so radiates light at a wavelength of about 8 micrometers. This wavelength is in the infrared portion of the spectrum. Your eyes cannot see this light but your skin can feel it.

The color of a painted surface as seen in the visible portion of the spectrum (0.5 micrometers) is completely unrelated to the way it appears in the infrared. For example, window glass is completely opaque and black at 8 micrometers. Paint that appears white in the visible is not white in the infrared. 

If one were to paint the engine with coating that was truly black (i.e., high emissivity) at 8 micrometers, the result would simply be a much hotter engine compartment and cockpit floor. The engine temperature would not change, as it is maintained at a value that is determined by the thermostat.

Bottom line: Paint it whatever color you like. As with any paint job, if you don't change the color from the original, you will have an easier time getting a good looking outcome.

Cheers,
Matt Greenhouse
Friendship 295

-----Original Message-----
From: Public-List <public-list-bounces at lists.alberg30.org> On Behalf Of public-list-request at lists.alberg30.org
Sent: Thursday, September 12, 2019 4:05 PM
To: public-list at lists.alberg30.org
Subject: [EXTERNAL] Public-List Digest, Vol 3916, Issue 2

Send Public-List mailing list submissions to
	public-list at lists.alberg30.org

To subscribe or unsubscribe via the World Wide Web, visit
	https://urldefense.proofpoint.com/v2/url?u=http-3A__lists.alberg30.org_listinfo.cgi_public-2Dlist-2Dalberg30.org&d=DwICAg&c=ApwzowJNAKKw3xye91w7BE1XMRKi2LN9kiMk5Csz9Zk&r=E8am16u4UMclZ2k1VCTqTFySgI54UVmSspvx_dDyxSVZNVy2G1wppYfOSwOF0blO&m=EWQQk3MpVHJc0RRLWTuTSIiPopN3MgMZMkFDEVBbDls&s=N8Ud8LJMvrflWn73Rj-CihVx1LnhElc8i1OQf4awsYY&e=
or, via email, send a message with subject or body 'help' to
	public-list-request at lists.alberg30.org

You can reach the person managing the list at
	public-list-owner at lists.alberg30.org

When replying, please edit your Subject line so it is more specific than "Re: Contents of Public-List digest..."

Please do NOT include the entire digest in your reply!
======================================================

Today's Topics:

   1. Re: Engine Paint Color (Andrew Johns)

----------------------------------------------------------------------

Message: 1
Date: Thu, 12 Sep 2019 12:22:51 -0400
From: Andrew Johns <johnsab9 at gmail.com>
To: Alberg 30 Public List -- open to all
	<public-list at lists.alberg30.org>
Subject: Re: [Public-List] Engine Paint Color
Message-ID:
	<CAM5xwU6VyQWRQXqWKzbK1gpSR9nO0zC6sxCOcoq1fsOt+kGpMg at mail.gmail.com>
Content-Type: text/plain; charset="UTF-8"

The emissivity difference between white and black paint is small.

https://urldefense.proofpoint.com/v2/url?u=https-3A__www.infrared-2Dthermography.com_material-2D1.htm&d=DwICAg&c=ApwzowJNAKKw3xye91w7BE1XMRKi2LN9kiMk5Csz9Zk&r=E8am16u4UMclZ2k1VCTqTFySgI54UVmSspvx_dDyxSVZNVy2G1wppYfOSwOF0blO&m=EWQQk3MpVHJc0RRLWTuTSIiPopN3MgMZMkFDEVBbDls&s=7Et7JUwKe9novIUjEmLWI5r9_CJfuNLeiJIEd6l6LYs&e= 

The color would be negligible when you consider what portion of the heat is absorbed by the cooling system (convection) vs radiated through the engine block.

On Thu, Sep 12, 2019 at 12:17 PM Marcelo D. Gentinetta via Public-List < public-list at lists.alberg30.org> wrote:

> How do you prep the engine for painting?
> Marcelo
> #441
>
> > On Sep 12, 2019, at 11:14 AM, Mike Meinhold via Public-List <
> public-list at lists.alberg30.org> wrote:
> >
> > It is a pretty small effect so if it looks better it fine.
> >
> >
> > On Thu, Sep 12, 2019 at 10:33 Wes Gardner via Public-List < 
> > public-list at lists.alberg30.org> wrote:
> >
> >> Just about every super yacht and large cruiser I've been on the 
> >> engines, gensets, etc, etc are painted white and are so clean you 
> >> can eat off of them...just saying...
> >>
> >>
> >> On Thu, Sep 12, 2019 at 10:04 AM Jonathan Bresler via Public-List < 
> >> public-list at lists.alberg30.org> wrote:
> >>
> >>> Might silver/aluminum color be a good choice?
> >>> From Mike's post sounds like white (light colors?) do not radiate 
> >>> heat well, while dark colors do.  Dont know how silver/aluminum 
> >>> would do in that regard.
> >>>
> >>> Would be easy to see leaks, oil, coolant, rust, and dirt on
> >> silver/aluminum
> >>>
> >>> On Wed, Sep 11, 2019 at 4:36 PM Glenn Brooks via Public-List < 
> >>> public-list at lists.alberg30.org> wrote:
> >>>
> >>>> White will really show off any accumulation of dirt and grime.  I
> >> painted
> >>>> Dolce?s engine with a couple of spray cans of Volvo green, a
> moderately
> >>>> dark forest green, few years ago.  Looked real good and still 
> >>>> enabled
> >> me
> >>> to
> >>>> see tell tale leaks and rust spots.
> >>>>
> >>>> Sent from my iPad
> >>>>
> >>>>> On Sep 11, 2019, at 11:56 AM, Mike Meinhold via Public-List <
> >>>> public-list at lists.alberg30.org> wrote:
> >>>>>
> >>>>> A small downside to painting engines white is that they will not
> >>> radiate
> >>>>> heat as effectively as a dark color
> >>>>>
> >>>>> On Wed, Sep 11, 2019 at 14:03 Ryan via Public-List < 
> >>>>> public-list at lists.alberg30.org> wrote:
> >>>>>
> >>>>>> Hello All!
> >>>>>>
> >>>>>> I'm painting my engine soon and I'd like to change it from the
> >>> original
> >>>>>> reddish/copper to white, where I can see rust or leaks better 
> >>>>>> and
> >> the
> >>>>>> engine looks brighter and cleaner. Is there any downside to 
> >>>>>> doing
> >> this
> >>>> to
> >>>>>> the original Atomic 4?
> >>>>>>
> >>>>>> Thanks!
> >>>>>>
> >>>>>> --
> >>>>>> -Ryan Kiefer
> >>>>>> _______________________________________________
> >>>>>> These businesses support your Association:
> >>>>>> https://urldefense.proofpoint.com/v2/url?u=http-3A__www.alberg3
> >>>>>> 0.org_store_A30supporters.html&d=DwICAg&c=ApwzowJNAKKw3xye91w7B
> >>>>>> E1XMRKi2LN9kiMk5Csz9Zk&r=E8am16u4UMclZ2k1VCTqTFySgI54UVmSspvx_d
> >>>>>> DyxSVZNVy2G1wppYfOSwOF0blO&m=EWQQk3MpVHJc0RRLWTuTSIiPopN3MgMZMk
> >>>>>> FDEVBbDls&s=B3rwfJaHOGqJ05Hpqzgtq4W6gv1hmJNxnINW0nlZmRQ&e=
> >>>>>> Please support them.
> >>>>>> _______________________________________________
> >>>>>> Public-List mailing list
> >>>>>> Public-List at lists.alberg30.org
> >>>>>> https://urldefense.proofpoint.com/v2/url?u=http-3A__lists.alber
> >>>>>> g30.org_listinfo.cgi_public-2Dlist-2Dalberg30.org&d=DwICAg&c=Ap
> >>>>>> wzowJNAKKw3xye91w7BE1XMRKi2LN9kiMk5Csz9Zk&r=E8am16u4UMclZ2k1VCT
> >>>>>> qTFySgI54UVmSspvx_dDyxSVZNVy2G1wppYfOSwOF0blO&m=EWQQk3MpVHJc0RR
> >>>>>> LWTuTSIiPopN3MgMZMkFDEVBbDls&s=N8Ud8LJMvrflWn73Rj-CihVx1LnhElc8
> >>>>>> i1OQf4awsYY&e=
> >>>>>>
> >>>>> _______________________________________________
> >>>>> These businesses support your Association:
> >>>>> https://urldefense.proofpoint.com/v2/url?u=http-3A__www.alberg30
> >>>>> .org_store_A30supporters.html&d=DwICAg&c=ApwzowJNAKKw3xye91w7BE1
> >>>>> XMRKi2LN9kiMk5Csz9Zk&r=E8am16u4UMclZ2k1VCTqTFySgI54UVmSspvx_dDyx
> >>>>> SVZNVy2G1wppYfOSwOF0blO&m=EWQQk3MpVHJc0RRLWTuTSIiPopN3MgMZMkFDEV
> >>>>> BbDls&s=B3rwfJaHOGqJ05Hpqzgtq4W6gv1hmJNxnINW0nlZmRQ&e=
> >>>>> Please support them.
> >>>>> _______________________________________________
> >>>>> Public-List mailing list
> >>>>> Public-List at lists.alberg30.org
> >>>>> https://urldefense.proofpoint.com/v2/url?u=http-3A__lists.alberg
> >>>>> 30.org_listinfo.cgi_public-2Dlist-2Dalberg30.org&d=DwICAg&c=Apwz
> >>>>> owJNAKKw3xye91w7BE1XMRKi2LN9kiMk5Csz9Zk&r=E8am16u4UMclZ2k1VCTqTF
> >>>>> ySgI54UVmSspvx_dDyxSVZNVy2G1wppYfOSwOF0blO&m=EWQQk3MpVHJc0RRLWTu
> >>>>> TSIiPopN3MgMZMkFDEVBbDls&s=N8Ud8LJMvrflWn73Rj-CihVx1LnhElc8i1OQf
> >>>>> 4awsYY&e=
> >>>>
> >>>> _______________________________________________
> >>>> These businesses support your Association:
> >>>> https://urldefense.proofpoint.com/v2/url?u=http-3A__www.alberg30.
> >>>> org_store_A30supporters.html&d=DwICAg&c=ApwzowJNAKKw3xye91w7BE1XM
> >>>> RKi2LN9kiMk5Csz9Zk&r=E8am16u4UMclZ2k1VCTqTFySgI54UVmSspvx_dDyxSVZ
> >>>> NVy2G1wppYfOSwOF0blO&m=EWQQk3MpVHJc0RRLWTuTSIiPopN3MgMZMkFDEVBbDl
> >>>> s&s=B3rwfJaHOGqJ05Hpqzgtq4W6gv1hmJNxnINW0nlZmRQ&e=
> >>>> Please support them.
> >>>> _______________________________________________
> >>>> Public-List mailing list
> >>>> Public-List at lists.alberg30.org
> >>>> https://urldefense.proofpoint.com/v2/url?u=http-3A__lists.alberg3
> >>>> 0.org_listinfo.cgi_public-2Dlist-2Dalberg30.org&d=DwICAg&c=Apwzow
> >>>> JNAKKw3xye91w7BE1XMRKi2LN9kiMk5Csz9Zk&r=E8am16u4UMclZ2k1VCTqTFySg
> >>>> I54UVmSspvx_dDyxSVZNVy2G1wppYfOSwOF0blO&m=EWQQk3MpVHJc0RRLWTuTSIi
> >>>> PopN3MgMZMkFDEVBbDls&s=N8Ud8LJMvrflWn73Rj-CihVx1LnhElc8i1OQf4awsY
> >>>> Y&e=
> >>>>
> >>>
> >>>
> >>> --
> >>> Jonathan M Bresler
> >>> S/V Constance Alberg 30 #262
> >>> Annapolis/Eastport MD
> >>> _______________________________________________
> >>> These businesses support your Association:
> >>> https://urldefense.proofpoint.com/v2/url?u=http-3A__www.alberg30.o
> >>> rg_store_A30supporters.html&d=DwICAg&c=ApwzowJNAKKw3xye91w7BE1XMRK
> >>> i2LN9kiMk5Csz9Zk&r=E8am16u4UMclZ2k1VCTqTFySgI54UVmSspvx_dDyxSVZNVy
> >>> 2G1wppYfOSwOF0blO&m=EWQQk3MpVHJc0RRLWTuTSIiPopN3MgMZMkFDEVBbDls&s=
> >>> B3rwfJaHOGqJ05Hpqzgtq4W6gv1hmJNxnINW0nlZmRQ&e=
> >>> Please support them.
> >>> _______________________________________________
> >>> Public-List mailing list
> >>> Public-List at lists.alberg30.org
> >>> https://urldefense.proofpoint.com/v2/url?u=http-3A__lists.alberg30
> >>> .org_listinfo.cgi_public-2Dlist-2Dalberg30.org&d=DwICAg&c=ApwzowJN
> >>> AKKw3xye91w7BE1XMRKi2LN9kiMk5Csz9Zk&r=E8am16u4UMclZ2k1VCTqTFySgI54
> >>> UVmSspvx_dDyxSVZNVy2G1wppYfOSwOF0blO&m=EWQQk3MpVHJc0RRLWTuTSIiPopN
> >>> 3MgMZMkFDEVBbDls&s=N8Ud8LJMvrflWn73Rj-CihVx1LnhElc8i1OQf4awsYY&e=
> >>>
> >> _______________________________________________
> >> These businesses support your Association:
> >> https://urldefense.proofpoint.com/v2/url?u=http-3A__www.alberg30.or
> >> g_store_A30supporters.html&d=DwICAg&c=ApwzowJNAKKw3xye91w7BE1XMRKi2
> >> LN9kiMk5Csz9Zk&r=E8am16u4UMclZ2k1VCTqTFySgI54UVmSspvx_dDyxSVZNVy2G1
> >> wppYfOSwOF0blO&m=EWQQk3MpVHJc0RRLWTuTSIiPopN3MgMZMkFDEVBbDls&s=B3rw
> >> fJaHOGqJ05Hpqzgtq4W6gv1hmJNxnINW0nlZmRQ&e=
> >> Please support them.
> >> _______________________________________________
> >> Public-List mailing list
> >> Public-List at lists.alberg30.org
> >> https://urldefense.proofpoint.com/v2/url?u=http-3A__lists.alberg30.
> >> org_listinfo.cgi_public-2Dlist-2Dalberg30.org&d=DwICAg&c=ApwzowJNAK
> >> Kw3xye91w7BE1XMRKi2LN9kiMk5Csz9Zk&r=E8am16u4UMclZ2k1VCTqTFySgI54UVm
> >> Sspvx_dDyxSVZNVy2G1wppYfOSwOF0blO&m=EWQQk3MpVHJc0RRLWTuTSIiPopN3MgM
> >> ZMkFDEVBbDls&s=N8Ud8LJMvrflWn73Rj-CihVx1LnhElc8i1OQf4awsYY&e=
> >>
> > _______________________________________________
> > These businesses support your Association:
> > https://urldefense.proofpoint.com/v2/url?u=http-3A__www.alberg30.org
> > _store_A30supporters.html&d=DwICAg&c=ApwzowJNAKKw3xye91w7BE1XMRKi2LN
> > 9kiMk5Csz9Zk&r=E8am16u4UMclZ2k1VCTqTFySgI54UVmSspvx_dDyxSVZNVy2G1wpp
> > YfOSwOF0blO&m=EWQQk3MpVHJc0RRLWTuTSIiPopN3MgMZMkFDEVBbDls&s=B3rwfJaH
> > OGqJ05Hpqzgtq4W6gv1hmJNxnINW0nlZmRQ&e=
> > Please support them.
> > _______________________________________________
> > Public-List mailing list
> > Public-List at lists.alberg30.org
> > https://urldefense.proofpoint.com/v2/url?u=http-3A__lists.alberg30.o
> > rg_listinfo.cgi_public-2Dlist-2Dalberg30.org&d=DwICAg&c=ApwzowJNAKKw
> > 3xye91w7BE1XMRKi2LN9kiMk5Csz9Zk&r=E8am16u4UMclZ2k1VCTqTFySgI54UVmSsp
> > vx_dDyxSVZNVy2G1wppYfOSwOF0blO&m=EWQQk3MpVHJc0RRLWTuTSIiPopN3MgMZMkF
> > DEVBbDls&s=N8Ud8LJMvrflWn73Rj-CihVx1LnhElc8i1OQf4awsYY&e=
>
> _______________________________________________
> These businesses support your Association:
> https://urldefense.proofpoint.com/v2/url?u=http-3A__www.alberg30.org_s
> tore_A30supporters.html&d=DwICAg&c=ApwzowJNAKKw3xye91w7BE1XMRKi2LN9kiM
> k5Csz9Zk&r=E8am16u4UMclZ2k1VCTqTFySgI54UVmSspvx_dDyxSVZNVy2G1wppYfOSwO
> F0blO&m=EWQQk3MpVHJc0RRLWTuTSIiPopN3MgMZMkFDEVBbDls&s=B3rwfJaHOGqJ05Hp
> qzgtq4W6gv1hmJNxnINW0nlZmRQ&e=
> Please support them.
> _______________________________________________
> Public-List mailing list
> Public-List at lists.alberg30.org
> https://urldefense.proofpoint.com/v2/url?u=http-3A__lists.alberg30.org
> _listinfo.cgi_public-2Dlist-2Dalberg30.org&d=DwICAg&c=ApwzowJNAKKw3xye
> 91w7BE1XMRKi2LN9kiMk5Csz9Zk&r=E8am16u4UMclZ2k1VCTqTFySgI54UVmSspvx_dDy
> xSVZNVy2G1wppYfOSwOF0blO&m=EWQQk3MpVHJc0RRLWTuTSIiPopN3MgMZMkFDEVBbDls
> &s=N8Ud8LJMvrflWn73Rj-CihVx1LnhElc8i1OQf4awsYY&e=
>

------------------------------

Subject: Digest Footer

_______________________________________________
These businesses support your Association:
https://urldefense.proofpoint.com/v2/url?u=http-3A__www.alberg30.org_store_A30supporters.html&d=DwICAg&c=ApwzowJNAKKw3xye91w7BE1XMRKi2LN9kiMk5Csz9Zk&r=E8am16u4UMclZ2k1VCTqTFySgI54UVmSspvx_dDyxSVZNVy2G1wppYfOSwOF0blO&m=EWQQk3MpVHJc0RRLWTuTSIiPopN3MgMZMkFDEVBbDls&s=B3rwfJaHOGqJ05Hpqzgtq4W6gv1hmJNxnINW0nlZmRQ&e=
Please support them.
_______________________________________________
Public-List mailing list
Public-List at lists.alberg30.org
https://urldefense.proofpoint.com/v2/url?u=http-3A__lists.alberg30.org_listinfo.cgi_public-2Dlist-2Dalberg30.org&d=DwICAg&c=ApwzowJNAKKw3xye91w7BE1XMRKi2LN9kiMk5Csz9Zk&r=E8am16u4UMclZ2k1VCTqTFySgI54UVmSspvx_dDyxSVZNVy2G1wppYfOSwOF0blO&m=EWQQk3MpVHJc0RRLWTuTSIiPopN3MgMZMkFDEVBbDls&s=N8Ud8LJMvrflWn73Rj-CihVx1LnhElc8i1OQf4awsYY&e= 

------------------------------

End of Public-List Digest, Vol 3916, Issue 2
********************************************