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Bus Discussion => Bus Topics ( click here for quick start! ) => Topic started by: gus on February 16, 2014, 04:31:28 PM

Title: Matte Paint Finish?
Post by: gus on February 16, 2014, 04:31:28 PM
I just read in MH magazine that a new Winnebago has a matte paint finish which is "unique" and doesn't show ripples like a gloss finish?? It even goes onto the glass. Winnebago is very excited about this!

Unless it is different than my understanding of matte it is indeed a weird thing.

It only costs $8-10,000 more!

Anyone know anything about this?
Title: Re: Matte Paint Finish?
Post by: Jeremy on February 16, 2014, 04:59:22 PM
Gloss paint will certainly show surface imperfections much more readily than matt paint - nothing new in that, but if I were buying an expensive new motorhome I think I'd be asking why the bodywork wasn't straight to start with, rather than considering paying extra for paint that would help hide the ripples.

The ability of the paint to stick to glass isn't a function of it's glossiness or mattness I don't think - paint for use on glass and ceramic tile is typically gloss in my experience.

Jeremy

PS - For my own curiosity I Googled whether 'matte' was a correct variation of 'matt' - turns out that 'matte' and 'mat' are the French masculine and feminine versions of the word (like 'naive' and 'naif', or 'blonde' and 'blond')
Title: Re: Matte Paint Finish?
Post by: trucktramp on February 16, 2014, 07:00:47 PM
Isn't this also known as primer? ;D
Title: Re: Matte Paint Finish?
Post by: Dave5Cs on February 16, 2014, 08:44:50 PM
Its like the cars people are painting with that weird black paint. It looks like a matte finish and it is finish paint not primer. Almost has a shin but not quite. Looks to me like they forgot to finish it.

Dave5Cs
Title: Re: Matte Paint Finish?
Post by: Jeremy on February 16, 2014, 10:07:37 PM
Quote from: Dave5Cs on February 16, 2014, 08:44:50 PM
Its like the cars people are painting with that weird black paint. It looks like a matte finish and it is finish paint not primer. Almost has a shin but not quite. Looks to me like they forgot to finish it.

Dave5Cs

Those cars are actually probably vinyl wrapped rather than painted - having a matt black wrap is very fashionable at the moment amongst those with more money than taste.

'Satin' finishes sit between matt and gloss by the way ("almost a shine but not quite"). True matt finishes tend to mark very easily, just as a matt black blackboard does

Jeremy
Title: Re: Matte Paint Finish?
Post by: Iceni John on February 16, 2014, 10:38:59 PM
Any vehicle painted this way will get hotter in direct sunlight than one with a glossy finish, and thus will take more energy to keep cool inside.   Let's hope the roof is white.

Ah, what price vanity?

John   
Title: Re: Matte Paint Finish?
Post by: TomC on February 17, 2014, 08:30:39 AM
I like shiny!
Title: Re: Matte Paint Finish?
Post by: Lin on February 17, 2014, 10:23:04 AM
Well, if flat finishes became standard, I would be able to brush paint the bus and not have to deal with shinning expectations.
Title: Re: Matte Paint Finish?
Post by: LowTide on February 17, 2014, 11:44:17 AM
Quote from: Jeremy on February 16, 2014, 10:07:37 PM
Those cars are actually probably vinyl wrapped rather than painted - having a matt black wrap is very fashionable at the moment amongst those with more money than taste.

'Satin' finishes sit between matt and gloss by the way ("almost a shine but not quite"). True matt finishes tend to mark very easily, just as a matt black blackboard does

Jeremy

Jeremy,

You are right, the new cars with this matte or satin finish is a 3M wrap. I was looking into this as we were going to use some black in our color scheme for the coach. One concern I had was the gloss showing the ripples, but I think with the colors we are going to use, it won't be as bad as painting the bus all gloss black....with the exception of the roof, which will be white.


Cheers
Mike
Title: Re: Matte Paint Finish?
Post by: gus on February 17, 2014, 02:34:06 PM
Back in the '50s it was cool for rodders and customizers to use black primer as the top coat, only problem was it would allow rust!

This paint is not primer, it is a top coat. Interior house paint has had this finish for years but I can't think of even one advantage for exterior matte. I thought maybe it was some kind of deep finish that took on different looks from different angles? I haven't seen any of the new BMWs or Mercedes so I don't know what they look like.

It for sure is one way for SS mfg to push something new and make huge $$$ in the process. The nutty dark swirly paint jobs today make absolutely no sense except they mask the really ugly flat boxes with wheels.
Title: Re: Matte Paint Finish?
Post by: TomC on February 17, 2014, 09:19:53 PM
If you want kool-paint your bus Mystic. Good Luck, TomC
Title: Re: Matte Paint Finish?
Post by: Hobie on February 18, 2014, 05:56:12 AM
    You could have a lot of fun with a flat black bus.  " Urban Assault Vehicle" ,   NSA mobile listening unit,  Seal Team bus, shh.,   Girls gone wild bus,   I say go for it!!!! Have fun.
Title: Re: Matte Paint Finish?
Post by: LowTide on February 18, 2014, 01:48:51 PM
Quote from: Hobie on February 18, 2014, 05:56:12 AM
   You could have a lot of fun with a flat black bus.  " Urban Assault Vehicle" ,   NSA mobile listening unit,  Seal Team bus, shh.,   Girls gone wild bus,   I say go for it!!!! Have fun.

Girls gone wild.....LOL
Title: Re: Matte Paint Finish?
Post by: gus on February 18, 2014, 04:21:36 PM
What the heck is Mystic??

Since it was $8-10,000 extra for that paint I can only imagine what a complete repaint would cost!
Title: Re: Matte Paint Finish?
Post by: lvmci on February 18, 2014, 05:16:43 PM
Hi All, I always thought a hi gloss finish was to create a smoother surface, creating a lower drag coefficient, glide thru the air with less resistance or drag, why would anyone want to cause more drag, get less power from drag, create a bigger surface area, each bump creates more surface up and down the bump, not much more until you add up every bump, I wonder if the airlines would paint a matte or matt, jet?, lvmci...
Title: Re: Matte Paint Finish?
Post by: Van on February 18, 2014, 05:42:20 PM
 ;D
Title: Re: Matte Paint Finish?
Post by: Jeremy on February 18, 2014, 06:04:10 PM
Quote from: lvmci on February 18, 2014, 05:16:43 PM
Hi All, I always thought a hi gloss finish was to create a smoother surface, creating a lower drag coefficient, glide thru the air with less resistance or drag, why would anyone want to cause more drag, get less power from drag, create a bigger surface area, each bump creates more surface up and down the bump, not much more until you add up every bump, I wonder if the airlines would paint a matte or matt, jet?, lvmci...

The thinking has changed completely on this in the relatively recent past - but in fact it was thought to be the other way round to what you suggest - ie, the belief was that that rougher surfaces had less drag.

Hulls of racing yachts (so we're talking hydrodynamics rather than aerodynamics, but the principles are identical) used to be deliberately roughened slightly because it was thought to reduce drag. It's very easy to observe how water apparently seems to flow better over a rough surface - on a glossy surface the water forms into droplets which 'stick' to the surface, but if the same surface is slightly roughened with wet'n'dry sandpaper that slight roughness is enough to break the surface tension of the droplets, and the water flows easily away. This was thought to mean that they'd be less drag on a boat with a slightly roughened hull as it moved through the water - but this belief has now been completely reversed and everyone now tries to get their hulls as shiney as possible

But another twist to this comes from investigations into the properties of sharkskin:- sharks (apparently) move through the water with much less drag than they should do, and they have particularly rough skins. In fact the surface of shark skin is 'grooved' front to back - so a shark's body is covered in thousands of tiny grooves which run along the length of their body from nose to tail, and it's been proven that these grooves reduce the surface friction and hence drag of the shark because water prefers being directed down a channel to flowing over a smooth surface. 3M now produce a stick-on film featuring these microscopic channels, which is applied to the blades of wind turbines and the hulls of racing yachts and so on (and could theoretically be used to reduce the fuel consumption of a bus)

Jeremy
Title: Re: Matte Paint Finish?
Post by: Hobie on February 19, 2014, 06:29:57 AM
+1 Jeremy 

Can't imagion paint will result in any significant mpg improvement.  After all its a 40,000lb brick!!  :)   
Title: Re: Matte Paint Finish?
Post by: gus on February 21, 2014, 04:43:41 PM
There is no possible way paint finish can have any measurable effect on the airflow around a big rectangular blob!! It would be measured in micro-thousands!!