[Ducati] oil cooler relocate

Mon May 1 06:26:56 EDT 2006

DIrk, I think you will find in alot of cases none of the OEMs leave raw aluminum alone, almost all is anodized or clear coated to prevent just the oxidation you mention.  Some of the heat rejection paint is very good.

"Wright, Dirk" <Dirk.Wright at USPTO.GOV> wrote:  Raw aluminum is better than painted aluminum as far as heat transfer goes, based on my understanding of that subject. The least "stuff" in the way between the oil and the air, the better. Aluminum always has a thin oxide coating on it unless it's been etched for painting. This oxidation takes place very fast and is very thin so it's really best to just leave it raw aluminum and then just replace the cooler if it gets really crusty from exposure to salt and other chemicals. 

-----Original Message-----
From: ducati-bounces at ducati.net on behalf of Rich Roberts
Sent: Sun 4/30/2006 8:26 AM
To: Ducati Owners Group
Cc: 
Subject: RE: [Ducati] oil cooler relocate
Except black paint. Factories often paint radiators black, pipes black etc to help with heat rejection. If a company like Honda thinks it a good idea I would bet they spent alot of time thinking about the reasons why. Of course the problem always is how do you paint and how well do you paint, too think would obviously be a problem.

"Wright, Dirk" wrote: I wouldn't paint it. I think convection is the main heat transfer mode, since paint is an insulator the cooler would be less effective. 

-----Original Message-----
From: ducati-bounces at ducati.net [mailto:ducati-bounces at ducati.net]On
Behalf Of Scott Cloninger
Sent: Friday, April 28, 2006 1:17 PM
To: Ducati Owners Group
Subject: RE: [Ducati] oil cooler relocate

Since we're on the subject.....

The paint on my oil cooler is flaking off. I've considered repainting it and I've considered taking off all the paint with a solvent and leaving it nude. I know that removing the paint would lower the units emissivity (black is the most emissive color, white, which is pretty close to silver, the least), but I don't think the cooler loses much heat via radiation anyway.

Does anyone on the list have an opinion regarding this subject?

If I want to paint it, what paint should I use? I suppose something that stands up well to heat and will lay on thin to maximize heat transfer. How about brand names of paints or whatever you recommend?

Thanks, in advance.

Cloner

-----Original Message-----
From: Antonio Nolasco [mailto:anolasco at wanadoo.es]
Sent: Thursday, April 27, 2006 1:45 PM
To: Ducati Owners Group
Subject: Re: [Ducati] oil cooler relocate

Very fine comments Alex. I will take care of air ducting in the near futur.
Regards/ Antonio
95' 900SS

----- Original Message ----- 
From: "Alex Ortner" 
To: "'Ducati Owners Group'" 
Sent: Wednesday, April 26, 2006 5:08 PM
Subject: RE: [Ducati] oil cooler relocate

> Hi Guys
> The problem with the effectiveness of the Ducati oil cooler is that air
> always travels in a path of least resistance. It is way easier for the
> air to spillover the edge of the cooler then to go through the cooler.
> Any proper installation of any radiator or cooler will have a dam
> surrounding the cooler which forces the air though the cooler instead of
> letting it spill off the sides. Look at the installation of the cooler
> on any of the Superbikes the cooler is in a depressed area. On the 900ss
> they failed to include this piece and the efficiency of the cooler
> suffers because of it. Anything screen or filter material you put in
> front of the cooler makes maters worse. Putting the cooler in front of
> the carbs, manifolds and rear cylinder isn't an improvement in cooling
> it will help with rock damage. Putting the cooler in the nose behind the
> ducts in an old 900sssp or CR and blocking the coolers edges so that any
> air entering the nose has to exist through the cooler is really the best
> solution to both issues. 
> 
> On one irritation of my GP Due I ran a cooler in the nose behind a large
> duct and this worked very well on a 100hp two valver. On a later
> irritation I ran two coolers in the normal radiator and low cooler
> position but with ducting around them this worked and as well and was a
> better install with the Moto Gp body work I used.
> Alex Ortner
> 1036CS
> 908SSP
> 966Gp Due
> Audi allroad
> Mailto:aortner at comcast.net
> www.alexortner.com
> www.cyclecat.com
> 
> 
> 
> Ducati On Line thanks its sponsor and friend, Cycle Cat, maker of 
> some of the most beautiful products ever for Ducati's.
> Visit http://www.cyclecat.com/
> 
> _______________________________________________
> Ducati mailing list
> Ducati at ducati.net
> http://list.ducati.net/cgi-bin/mailman/listinfo/ducati
> Mailto: anolasco at wanadoo.es
>

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Visit http://www.cyclecat.com/

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