Sheilding on/off

[Retrofan]

Hi:
Just a simple question, the sheilding off is better to cool the motherboard or on the contrary?
I've heard to comment that with it off it will be cooler, but I was thinking if you are going to put a fan blowing air from outside to inside the sheilding won't it be cooler with the sheilding?
I was thinking just in how a Beetle engine (yes, the car, and it isn't water cooled) gets refrigerated, and it's only a fan moved by the engine making the air cool it. The engine compartment is sealed with metal plaques and if you remove any it will get hotter.
 
And I was thinking too that the metal sheilding will warm the hottest parts of the mb that will be near to it with the coldest ones.
 
What do you say?

[Retrofan]

Not a good comparison. The "Beetle" sheet metal that keeps the heated air around the exhaust system from entering the engine compartment is not filled with ventilation holes like the shielding inside the A500/A600/A1200, or any other computer models.
 
The shielding inside the above referenced Amiga computers is there only for electronic interference, not heat control.

Yes, I've considered both things. First about the holes, yes, but compared with the Beetle, it gets hotter with each plate you take off, but not so much as it had none. In the Amiga it only would mean that the better solution would be to close all the holes in the sheilding with aluminium tape and to let only one in the other side of the fan. I agree with Rockape, but surely would be better with the sheilding.
 
About the heat control I haven't say a word that it was for that, I know it isn't, but there wasn't a fan when they did it.
 
What I'm meaning is that a fan would have better cooling with a sheilding than without it, and the better would be what I've said: to close all holes and leave one on the other side of where the fan is installed.
 
Any car engineer there?
 
Ah, and for the better cooling, the sheilding should be painted BLACK.
Why? I'll tell you: I had a Beetle engine painted black. I changed all the metal plates to Chromed ones. The temperature rised up by 20ºC.

[Retrofan]

On my 1200, I have to remove the shielding, otherwise things like my CF disk and Indivision won't fit in there. .

Aaah the Indivision! I need one, and in fact I've opened this thread just for that while was talking to @phipscube. This post:
 
Question:

I don't have still an Indivision, but I have the internal Cd and the subway with the sheilding on. Do you know or believe it can be installed with the sheilding?
(well, I know the new Indivisions will be smaller, but can't wait so much)

Answer:

I never actually tried with the sheilding on and I wouldn't recommend it as it gets quite warm. But I *Think* its supposed to work ok with the sheilding on but a small modification is needed to the sheild itself from what I remember.

.....................
But the Indivision will fit or not with the sheilding?

[Retrofan]

2) being silver it actually reflects a lot of the heat back onto the chips...

Yes, that's true, that's why it musn't be removed, but painted BLACK inside and outside...
 
Am I not convincing anybody?

[Retrofan]

Nope...

... Somebody that tries this before I do?:laughing:

[Retrofan]

Any german VW entusiast there?
 
I could put an sticker on the Amiga...
 

[Retrofan]

I've said I know it, but it wasn't designed with a fan on it, and I said it could be used to cool the motherboard the same way the Beetle does.
Germans know something about how to cool an engine only with air, see that Beetles in the desert in WW2... I heard there you could change two Jeeps for a Beetle...
 
Any proud German there?
 
About the photo, I'll tell you my father had one in white, although it's very very difficult to see one of those, at least here. I haven't seen one in 20 years , is there any in the Moon?

[Retrofan]

Hmm... wondered why I was picking up radio 1 on my internal hard disk drive...

Try moving the Amiga, perhaps you can tune up some Tv program...
 
No germans at all here?

[Retrofan]

Only one broken down moon buggy. Somebody left it here.
:lol:

It must be difficult to run an Amiga there, with temperatures between 387º Fahrenheit (-233 ºC) by night, and 253º Fahrenheit (123ºC) by day...

[Retrofan]

@retrofan,
 
I can see what you're getting at.

At least one convinced !!!

@retrofan,
 
Apparently the radiators would no longer be asthetically pleasing to the eye. So as long as it looks good, right? :lol:
 
In practice though I'm not sure by how much the heating system efficiency would be improved by painting the radiators black. I would like to try it, and generally my partner is very patient with my crazy experiments, but she draws the line there I'm afraid!!!
 
AH

I was thinking that if I don't modify it all putting tape and painting all black, the next time I will open the sheilding at least I will paint it black inside the sheilding...
 

I have a Beetle and I have Amigas, they are unrelated!
 
Remove the shielding and throw it away, it's useless.

When you'll have the engine mounted piece by piece by you we can begin to talk. Air cooled refrigeration is related to any Amiga with a fan on it and PC's although you can't see it. Even water cooling is related to PC's... didn't you think where do they taked the idea? YES, they were cars ! This is my Beetle (Big photo, isn't it?... change your screen size:roflmao:)
 

[Retrofan]

You're delusional.

Even Darwing  is hearing that now :furious:(Tea Party)

[Retrofan]

Well, Ok, that's an opinion..., I've never said I'm against heatsink/internal fans... and the heat out can be conduced by the sealed sheilding with the proper output for it.
 
I'm working hard to convince people... :hammer:. By now I've one on the list. Any other, ple:)se?

[Retrofan]

Get yourself a nice '040@40mhz and trust it to your draft-tunnel experiment without its own fan and let me know how long it lasts.

Why do you believe I'm taking so much effort to convince someone to try it before :roflmao:?
 
And the fan is the main thing: you can leave as many fans over any components as you want from outside the sheilding, sealing the rest of it and leaving an output for the air.
 
BTW the last time I saw your Amiga it had the accelerator outside the sheilding, have you changed something? I was thinking in things inside it like the Indivision...

[Retrofan]

Judging by your car, you seem to enjoy attaching unnecessary things.

Some people call things as unnecessary, others have Amigas and Showroom Beetles... but I like rusty Beetles too :lol:
 
Any other to join the list :rtfm:  ?

[Retrofan]

if you have hot componets you could try somekind of link to the sheilding,using it as a heatsink which iv seen one user here on this site has already done.

Are you saying this Thread? http://eab.abime.net/showthread.php?t=37417 Now the photos are gone, but I remember he made an aluminium trapdoor that was touching the cpu of the accelerator, and he joined a car battery cable or something similar between the trapdoor and the sheilding or the keyboard, didn't he?
 

if you ground the heatsink image seems a little bit sharper as lease here on my system.
 
the same appiles here too on my test sound card,background noise is reduced.
 

Perhaps't that's why I listen AmigaAmp so well....